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Gomes DS, Miranda FR, Fernandes KM, Farder-Gomes CF, Bastos DSS, Bernardes RC, Serrão JE. Acute exposure to fungicide fluazinam induces cell death in the midgut, oxidative stress and alters behavior of the stingless bee Partamona helleri (Hymenoptera: Apidae). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 282:116677. [PMID: 38971098 DOI: 10.1016/j.ecoenv.2024.116677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 06/26/2024] [Accepted: 06/30/2024] [Indexed: 07/08/2024]
Abstract
Stingless bees (Hymenoptera: Meliponini) are pollinators of both cultivated and wild crop plants in the Neotropical region. However, they are susceptible to pesticide exposure during foraging activities. The fungicide fluazinam is commonly applied in bean and sunflower cultivation during the flowering period, posing a potential risk to the stingless bee Partamona helleri, which serves as a pollinator for these crops. In this study, we investigated the impact of acute oral exposure (24 h) fluazinam on the survival, morphology and cell death signaling pathways in the midgut, oxidative stress and behavior of P. helleri worker bees. Worker bees were exposed for 24 h to fluazinam (field concentrations 0.5, 1.5 and 2.5 mg a.i. mL-1), diluted in 50 % honey aqueous solution. After oral exposure, fluazinam did not harm the survival of worker bees. However, sublethal effects were revealed using the highest concentration of fluazinam (2.5 mg a.i. mL-1), particularly a reduction in food consumption, damage in the midgut epithelium, characterized by degeneration of the brush border, an increase in the number and size of cytoplasm vacuoles, condensation of nuclear chromatin, and an increase in the release of cell fragments into the gut lumen. Bees exposed to fluazinam exhibited an increase in cells undergoing autophagy and apoptosis, indicating cell death in the midgut epithelium. Furthermore, the fungicide induced oxidative stress as evidenced by an increase in total antioxidant and catalase enzyme activities, along with a decrease in glutathione S-transferase activity. And finally, fluazinam altered the walking behavior of bees, which could potentially impede their foraging activities. In conclusion, our findings indicate that fluazinam at field concentrations is not lethal for workers P. helleri. Nevertheless, it has side effects on midgut integrity, oxidative stress and worker bee behavior, pointing to potential risks for this pollinator.
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Affiliation(s)
- Davy Soares Gomes
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Franciane Rosa Miranda
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Kenner Morais Fernandes
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Cliver Fernandes Farder-Gomes
- Departamento de Ciências Naturais, Matemática e Educação, Universidade Federal de São Carlos, Campus Araras, Araras, São Paulo 13.600-970, Brazil
| | - Daniel Silva Sena Bastos
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | | | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
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Laurent M, Bougeard S, Caradec L, Ghestem F, Albrecht M, Brown MJF, DE Miranda J, Karise R, Knapp J, Serrano J, Potts SG, Rundlöf M, Schwarz J, Attridge E, Babin A, Bottero I, Cini E, DE LA Rúa P, DI Prisco G, Dominik C, Dzul D, García Reina A, Hodge S, Klein AM, Knauer A, Mand M, Martínez López V, Serra G, Pereira-Peixoto H, Raimets R, Schweiger O, Senapathi D, Stout JC, Tamburini G, Costa C, Kiljanek T, Martel AC, LE S, Chauzat MP. Novel indices reveal that pollinator exposure to pesticides varies across biological compartments and crop surroundings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172118. [PMID: 38569959 DOI: 10.1016/j.scitotenv.2024.172118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/05/2024]
Abstract
Declines in insect pollinators have been linked to a range of causative factors such as disease, loss of habitats, the quality and availability of food, and exposure to pesticides. Here, we analysed an extensive dataset generated from pesticide screening of foraging insects, pollen-nectar stores/beebread, pollen and ingested nectar across three species of bees collected at 128 European sites set in two types of crop. In this paper, we aimed to (i) derive a new index to summarise key aspects of complex pesticide exposure data and (ii) understand the links between pesticide exposures depicted by the different matrices, bee species and apple orchards versus oilseed rape crops. We found that summary indices were highly correlated with the number of pesticides detected in the related matrix but not with which pesticides were present. Matrices collected from apple orchards generally contained a higher number of pesticides (7.6 pesticides per site) than matrices from sites collected from oilseed rape crops (3.5 pesticides), with fungicides being highly represented in apple crops. A greater number of pesticides were found in pollen-nectar stores/beebread and pollen matrices compared with nectar and bee body matrices. Our results show that for a complete assessment of pollinator pesticide exposure, it is necessary to consider several different exposure routes and multiple species of bees across different agricultural systems.
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Affiliation(s)
- Marion Laurent
- Anses, Sophia Antipolis laboratory, Unit of Honeybee Pathology, France
| | - Stéphanie Bougeard
- Anses, Ploufragan-Plouzané-Niort Laboratory, Epidemiology and welfare of pork, France
| | - Lucile Caradec
- CNRS, Statistics and Computer Science Department, L'Institut Agro Rennes-Angers, UMR 6625 IRMAR CNRS, 35042 Rennes Cedex, France
| | - Florence Ghestem
- CNRS, Statistics and Computer Science Department, L'Institut Agro Rennes-Angers, UMR 6625 IRMAR CNRS, 35042 Rennes Cedex, France
| | - Matthias Albrecht
- Agroscope, Agroecology and Environment, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Mark J F Brown
- Department of Biological Sciences, School of Life Sciences and the Environment, Royal Holloway University of London, Egham, UK
| | | | - Reet Karise
- Chair of Plant Health, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Fr. R. Kreutzwaldi 1a, 51006 Tartu, Estonia
| | - Jessica Knapp
- Department of Biology, Lund University, Lund, Sweden; Department of Botany, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - José Serrano
- Department of Zoology and Physical Anthropology, Faculty of Veterinary, University of Murcia, 30100 Murcia, Spain
| | - Simon G Potts
- School of Agriculture, Policy and Development, Reading University, RG6 6AR, UK
| | - Maj Rundlöf
- Department of Biology, Lund University, Lund, Sweden
| | - Janine Schwarz
- Agroscope, Agroecology and Environment, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | | | - Aurélie Babin
- Anses, Sophia Antipolis laboratory, Unit of Honeybee Pathology, France
| | - Irene Bottero
- Department of Botany, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Elena Cini
- School of Agriculture, Policy and Development, Reading University, RG6 6AR, UK
| | - Pilar DE LA Rúa
- Department of Zoology and Physical Anthropology, Faculty of Veterinary, University of Murcia, 30100 Murcia, Spain
| | - Gennaro DI Prisco
- CREA - Research Centre for Agriculture and Environment, Bologna, Italy; Institute for Sustainable Plant Protection, The Italian National Research Council, Napoli, Italy
| | - Christophe Dominik
- Helmholtz Centre for Environmental Research - UFZ, Dep. Community Ecology, Theodor-Lieser-Strasse 4, 06120 Halle, Germany
| | - Daniel Dzul
- Department of Zoology and Physical Anthropology, Faculty of Veterinary, University of Murcia, 30100 Murcia, Spain
| | - Andrés García Reina
- Department of Zoology and Physical Anthropology, Faculty of Veterinary, University of Murcia, 30100 Murcia, Spain
| | - Simon Hodge
- Department of Botany, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Alexandra M Klein
- Nature Conservation and Landscape Ecology, University of Freiburg, Germany
| | - Anina Knauer
- Agroscope, Agroecology and Environment, Reckenholzstrasse 191, 8046 Zurich, Switzerland
| | - Marika Mand
- Chair of Plant Health, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Fr. R. Kreutzwaldi 1a, 51006 Tartu, Estonia
| | - Vicente Martínez López
- Department of Zoology and Physical Anthropology, Faculty of Veterinary, University of Murcia, 30100 Murcia, Spain
| | - Giorgia Serra
- CREA - Research Centre for Agriculture and Environment, Bologna, Italy
| | | | - Risto Raimets
- Chair of Plant Health, Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Fr. R. Kreutzwaldi 1a, 51006 Tartu, Estonia
| | - Oliver Schweiger
- Helmholtz Centre for Environmental Research - UFZ, Dep. Community Ecology, Theodor-Lieser-Strasse 4, 06120 Halle, Germany
| | - Deepa Senapathi
- School of Agriculture, Policy and Development, Reading University, RG6 6AR, UK
| | - Jane C Stout
- Department of Botany, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland
| | - Giovanni Tamburini
- Nature Conservation and Landscape Ecology, University of Freiburg, Germany
| | - Cecilia Costa
- CREA - Research Centre for Agriculture and Environment, Bologna, Italy
| | - Tomasz Kiljanek
- PIWET, Department of Pharmacology and Toxicology, National Veterinary Research Institute, Puławy, Poland
| | | | - Sébastien LE
- CNRS, Statistics and Computer Science Department, L'Institut Agro Rennes-Angers, UMR 6625 IRMAR CNRS, 35042 Rennes Cedex, France
| | - Marie-Pierre Chauzat
- Anses, Sophia Antipolis laboratory, Unit of Honeybee Pathology, France; Paris-Est University, Anses, Laboratory for Animal Health, Maisons-Alfort, France.
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Bava R, Castagna F, Ruga S, Caminiti R, Nucera S, Bulotta RM, Naccari C, Britti D, Mollace V, Palma E. Protective Role of Bergamot Polyphenolic Fraction (BPF) against Deltamethrin Toxicity in Honeybees ( Apis mellifera). Animals (Basel) 2023; 13:3764. [PMID: 38136801 PMCID: PMC10741048 DOI: 10.3390/ani13243764] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/03/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Pesticide-induced poisoning phenomena are a serious problem for beekeeping and can cause large losses of honeybee populations due to acute and sub-acute poisoning. The reduced responsiveness of honeybees to the damage caused by pesticides used in agriculture can be traced back to a general qualitative and quantitative impoverishment of the nectar resources of terrestrial ecosystems. Malnutrition is associated with a decline in the functionality of the immune system and the systems that are delegated to the detoxification of the organism. This research aimed to verify whether bergamot polyphenolic extract (BPF) could have protective effects against poisoning by the pyrethroid pesticide deltamethrin. The studies were conducted with caged honeybees under controlled conditions. Sub-lethal doses of pesticides and related treatments for BPF were administered. At a dose of 21.6 mg/L, deltamethrin caused mortality in all treated subjects (20 caged honeybees) after one day of administration. The groups where BPF (1 mg/kg) was added to the toxic solution recorded the survival of honeybees by up to three days. Comparing the honeybees of the groups in which the BPF-deltamethrin association was added to the normal diet (sugar solution) with those in which deltamethrin alone was added to the normal diet, the BPF group had a statistically significant reduction in the honeybee mortality rate (p ≤ 0.05) and a greater consumption of food. Therefore, it can be argued that the inclusion of BPF and its constituent antioxidants in the honeybee diet reduces toxicity and oxidative stress caused by oral intake of deltamethrin. Furthermore, it can be argued that BPF administration could compensate for metabolic energy deficits often induced by the effects of malnutrition caused by environmental degradation and standard beekeeping practices.
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Affiliation(s)
- Roberto Bava
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Fabio Castagna
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
- Mediterranean Ethnobotanical Conservatory, Sersale (CZ), 88054 Catanzaro, Italy
| | - Stefano Ruga
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Rosamaria Caminiti
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Saverio Nucera
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Rosa Maria Bulotta
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Clara Naccari
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Domenico Britti
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
| | - Vincenzo Mollace
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
- Department of Health Sciences, Institute of Research for Food Safety & Health (IRC-FSH), University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy
- Nutramed S.c.a.r.l., Complesso Ninì Barbieri, Roccelletta di Borgia, 88021 Catanzaro, Italy
| | - Ernesto Palma
- Department of Health Sciences, University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy; (R.B.); (F.C.); (S.R.); (R.C.); (S.N.); (R.M.B.); (C.N.); (D.B.); (V.M.)
- Department of Health Sciences, Institute of Research for Food Safety & Health (IRC-FSH), University of Catanzaro Magna Graecia, 88100 Catanzaro, Italy
- Nutramed S.c.a.r.l., Complesso Ninì Barbieri, Roccelletta di Borgia, 88021 Catanzaro, Italy
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He Q, Zhang S, Yin F, Liu Q, Gao Q, Xiao J, Huang Y, Yu L, Cao H. Risk assessment of honeybee larvae exposure to pyrethroid insecticides in beebread and honey. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 267:115591. [PMID: 37890252 DOI: 10.1016/j.ecoenv.2023.115591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/20/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023]
Abstract
Honeybee is an essential pollinator to crops, evaluation to the risk assessment of honeybee larvae exposure to pesticides residue in the bee bread and honey is an important strategy to protect the bee colony due to the mixture of these two matrices is main food for 3-day-old honeybee larvae. In this study, a continuous survey to the residue of five pyrethroid insecticides in bee bread and honey between 2018 and 2020 from 17 major cultivation provinces which can be determined as Northeast, Northwest, Eastern, Central, Southwest, and Southern of China, there was at least one type II pyrethroid insecticide was detected in 54.7 % of the bee bread samples and 43.4 % of the honey. Then, we assayed the acute toxicity of type II pyrethroid insecticides based on the detection results, the LD50 value was 0.2201 μg/larva (beta-cyhalothrin), 0.4507 μg/larva (bifenthrin), 2.0840 μg/larva (fenvalerate), 0.0530 μg/larva (deltamethrin), and 0.1640 μg/larva (beta-cypermethrin), respectively. Finally, the hazard quotient was calculated as larval oral ranged from 0.046 × 10-3 to 2.128 × 10-3. Together, these empirical findings provide further insight into the accurate contamination of honey bee colonies caused by chemical pesticides, which can be used as a valuable guidance for the beekeeping industry and pesticide regulation.
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Affiliation(s)
- Qibao He
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Shiyu Zhang
- College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Fang Yin
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Qiongqiong Liu
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Quan Gao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Jinjing Xiao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Yong Huang
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Linsheng Yu
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Haiqun Cao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China; Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China.
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5
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Bischoff K, Moiseff J. The role of the veterinary diagnostic toxicologist in apiary health. J Vet Diagn Invest 2023; 35:597-616. [PMID: 37815239 PMCID: PMC10621547 DOI: 10.1177/10406387231203965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023] Open
Abstract
Susceptibility of individuals and groups to toxicants depends on complex interactions involving the host, environment, and other exposures. Apiary diagnostic investigation and honey bee health are truly population medicine: the colony is the patient. Here we provide basic information on the application of toxicology to the testing of domestic honey bees, and, in light of recent research, expand on some of the challenges of interpreting analytical chemistry findings as they pertain to hive health. The hive is an efficiently organized system of wax cells used to store brood, honey, and bee bread, and is protected by the bee-procured antimicrobial compound propolis. Toxicants can affect individual workers outside or inside the hive, with disease processes that range from acute to chronic and subclinical to lethal. Toxicants can impact brood and contaminate honey, bee bread, and structural wax. We provide an overview of important natural and synthetic toxicants to which honey bees are exposed; behavioral, husbandry, and external environmental factors influencing exposure; short- and long-term impacts of toxicant exposure on individual bee and colony health; and the convergent impacts of stress, nutrition, infectious disease, and toxicant exposures on colony health. Current and potential future toxicology testing options are included. Common contaminants in apiary products consumed or used by humans (honey, wax, pollen), their sources, and the potential need for product testing are also noted.
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Affiliation(s)
- Karyn Bischoff
- New York State Animal Health Diagnostic Laboratory, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Jennifer Moiseff
- New York State Animal Health Diagnostic Laboratory, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
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Schuhmann A, Scheiner R. A combination of the frequent fungicides boscalid and dimoxystrobin with the neonicotinoid acetamiprid in field-realistic concentrations does not affect sucrose responsiveness and learning behavior of honeybees. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 256:114850. [PMID: 37018858 DOI: 10.1016/j.ecoenv.2023.114850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/06/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
The increasing loss of pollinators over the last decades has become more and more evident. Intensive use of plant protection products is one key factor contributing to this decline. Especially the mixture of different plant protection products can pose an increased risk for pollinators as synergistic effects may occur. In this study we investigated the effect of the fungicide Cantus® Gold (boscalid/dimoxystrobin), the neonicotinoid insecticide Mospilan® (acetamiprid) and their mixture on honeybees. Since both plant protection products are frequently applied sequentially to the same plants (e.g. oilseed rape), their combination is a realistic scenario for honeybees. We investigated the mortality, the sucrose responsiveness and the differential olfactory learning performance of honeybees under controlled conditions in the laboratory to reduce environmental noise. Intact sucrose responsiveness and learning performance are of pivotal importance for the survival of individual honeybees as well as for the functioning of the entire colony. Treatment with two sublethal and field relevant concentrations of each plant protection product did not lead to any significant effects on these behaviors but affected the mortality rate. However, our study cannot exclude possible negative sublethal effects of these substances in higher concentrations. In addition, the honeybee seems to be quite robust when it comes to effects of plant protection products, while wild bees might be more sensitive.
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Affiliation(s)
- Antonia Schuhmann
- University of Würzburg, Behavioral Physiology and Sociobiology (Zoology II), Am Hubland, 97074 Würzburg, Germany.
| | - Ricarda Scheiner
- University of Würzburg, Behavioral Physiology and Sociobiology (Zoology II), Am Hubland, 97074 Würzburg, Germany.
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7
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Decourtye A, Rollin O, Requier F, Allier F, Rüger C, Vidau C, Henry M. Decision-making criteria for pesticide spraying considering the bees’ presence on crops to reduce their exposure risk. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1062441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
The risk of poisoning bees by sprayed pesticides depends on the attractiveness of plants and environmental and climatic factors. Thus, to protect bees from pesticide intoxication, an usual exemption to pesticide regulations allows for spraying on blooming flowers with insecticides or acaricides when no bees are foraging on crops. Nevertheless, decision-making criteria for farmers to assess the absence of bees on their crops remain under debate. To fill this gap, we present here a review of the literature and an analysis of weather conditions and environmental factors that affect the presence of bees on flowering crops that may be treated with pesticides, with the objective of proposing to farmers a series of decision-making criteria on how and when to treat. We conclude that the criteria commonly considered, such as ambient temperature, crop attractiveness, or distance from field edges, cannot guarantee the absence of forager exposure during pesticide sprays. Nocturnal sprays of pesticides on crops would be the most effective action to help farmers avoid unintentional acute poisoning of bees.
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8
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Nagloo N, Rigosi E, O'Carroll DC. Acute and chronic toxicity of imidacloprid in the pollinator fly, Eristalis tenax L., assessed using a novel oral bioassay. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 251:114505. [PMID: 36646007 DOI: 10.1016/j.ecoenv.2023.114505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 11/09/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Imidacloprid is a neonicotinoid neurotoxin that remains widely used worldwide and persists in the environment, resulting in chronic exposure to non-target insects. To accurately map dose-dependent effects of such exposure across taxa, toxicological assays need to assess relevant modes of exposure across indicator species. However, due to the difficulty of these experiments, contact bioassays are most frequently used to quantify dose. Here, we developed a novel naturalistic feeding bioassay to precisely measure imidacloprid ingestion and its toxicity for acute and chronic exposure in a dipteran, Eristalis tenax L., an important member of an under-represented pollinator group. Flies which ingested imidacloprid dosages lower than 12.1 ng/mg all showed consistent intake volumes and learned improved feeding efficiency over successive feeding sessions. In contrast, at doses of 12.1 ng/mg and higher flies showed a rapid onset of severe locomotive impairment which prevented them from completing the feeding task. Neither probability of survival nor severe locomotive impairment were significantly higher than the control group until doses of 1.43 ng/mg or higher were reached. We were unable to measure a median lethal dose for acute exposure (72 h) due to flies possessing a relatively high tolerance for imidacloprid. However, with chronic exposure (18 days), mortality went up and an LD50 of 0.41 ng/mg was estimated. Severe locomotive impairment (immobilisation) tended to occur earlier and at lower dosages than lethality, with ED50s of 7.82 ng/mg and 0.17 ng/mg for acute and chronic exposure, respectively. We conclude that adult Eristalis possess a much higher tolerance to this toxin than the honeybees that they mimic. The similarity of the LD50 to other dipterans such as the fruitfly and the housefly suggests that there may be a phylogenetic component to pesticide tolerance that merits further investigation. The absence of obvious adverse effects at sublethal dosages also underscores a need to develop better tools for quantifying animal behaviour to evaluate the impact of insecticides on foraging efficiency in economically important species.
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Affiliation(s)
| | - Elisa Rigosi
- Department of Biology Lund University, Lund, Sweden
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Martins CAH, Caliani I, D'Agostino A, Di Noi A, Casini S, Parrilli M, Azpiazu C, Bosch J, Sgolastra F. Biochemical responses, feeding and survival in the solitary bee Osmia bicornis following exposure to an insecticide and a fungicide alone and in combination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:27636-27649. [PMID: 36383317 PMCID: PMC9995414 DOI: 10.1007/s11356-022-24061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
In agricultural ecosystems, bees are exposed to combinations of pesticides that may have been applied at different times. For example, bees visiting a flowering crop may be chronically exposed to low concentrations of systemic insecticides applied before bloom and then to a pulse of fungicide, considered safe for bees, applied during bloom. In this study, we simulate this scenario under laboratory conditions with females of the solitary bee, Osmia bicornis L. We studied the effects of chronic exposure to the neonicotinoid insecticide, Confidor® (imidacloprid) at a realistic concentration, and of a pulse (1 day) exposure of the fungicide Folicur® SE (tebuconazole) at field application rate. Syrup consumption, survival, and four biomarkers: acetylcholinesterase (AChE), carboxylesterase (CaE), glutathione S-transferase (GST), and alkaline phosphatase (ALP) were evaluated at two different time points. An integrated biological response (IBRv2) index was elaborated with the biomarker results. The fungicide pulse had no impact on survival but temporarily reduced syrup consumption and increased the IBRv2 index, indicating potential molecular alterations. The neonicotinoid significantly reduced syrup consumption, survival, and the neurological activity of the enzymes. The co-exposure neonicotinoid-fungicide did not increase toxicity at the tested concentrations. AChE proved to be an efficient biomarker for the detection of early effects for both the insecticide and the fungicide. Our results highlight the importance of assessing individual and sub-individual endpoints to better understand pesticide effects on bees.
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Affiliation(s)
- Cátia Ariana Henriques Martins
- Department of Agricultural and Food Sciences, Alma Mater Studiorum Università Di Bologna, Viale Fanin 42, 40127, Bologna, Italy
| | - Ilaria Caliani
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100, Siena, Italy
| | - Antonella D'Agostino
- Department of Management and Quantitative Studies, University of Naples Parthenope, Naples, Italy
| | - Agata Di Noi
- Department of Life Sciences, University of Siena, Via Mattioli, 4, 53100, Siena, Italy.
| | - Silvia Casini
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli 4, 53100, Siena, Italy
| | - Martina Parrilli
- Department of Agricultural and Food Sciences, Alma Mater Studiorum Università Di Bologna, Viale Fanin 42, 40127, Bologna, Italy
| | - Celeste Azpiazu
- Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim de La Barceloneta 37, 08003, Barcelona, Spain
- Universidad Politécnica de Madrid, 28040, Madrid, Spain
| | - Jordi Bosch
- CREAF, Universitat Autònoma de Barcelona, 08193, Barcelona, Bellaterra, Spain
| | - Fabio Sgolastra
- Department of Agricultural and Food Sciences, Alma Mater Studiorum Università Di Bologna, Viale Fanin 42, 40127, Bologna, Italy
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Collins JK, Jackson JM. Application of a Screening-Level Pollinator Risk Assessment Framework to Trisiloxane Polyether Surfactants. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2022; 41:3084-3094. [PMID: 36104093 PMCID: PMC9828746 DOI: 10.1002/etc.5479] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/14/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
Regulatory requirements exist to assess the potential impacts of pesticides on insect pollinators, but "inert," coformulants to pesticide formulations are not included in standard regulatory risk assessments. Some publications in the open literature have suggested that the agricultural uses of "inert" ingredients, including trisiloxane polyether surfactants, may result in adverse effects on pollinators. We conducted a screening-level risk assessment to evaluate the potential risk to insect pollinators, using honey bees (Apis mellifera) as a surrogate, from exposure to three trisiloxane polyether surfactants based on agricultural application scenarios following the current US Environmental Protection Agency (USEPA) guidance. The exposure assessment included data from two sources: (1) use data reported in California's (USA) Pesticide Use Registry (PUR) database for all crops, and (2) an almond orchard residue study conducted using the three trisiloxane polyether surfactants. Honey bee laboratory studies with each of the trisiloxane polyether surfactants reported 50% lethal doses (LD50s) or no adverse effect levels, which were used as the effects inputs to BeeREX. The exposure and toxicity data were combined to estimate potential honey bee risk based on the determination of acute and chronic risk quotients (RQs) for larval and adult life stages. The RQs calculated using both the PUR use rates as well as the application rates and peak measured residues from the almond orchard residue study were below the USEPA acute and chronic levels of concern (acute, 0.4; chronic, 1.0). Based on these results, the use of these three trisiloxane polyether surfactants in agricultural use settings can be considered minimal risk to insect pollinators, and higher tier assessment is unnecessary for the characterization of risk. Environ Toxicol Chem 2022;41:3084-3094. © 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
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11
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Tosi S, Sfeir C, Carnesecchi E, vanEngelsdorp D, Chauzat MP. Lethal, sublethal, and combined effects of pesticides on bees: A meta-analysis and new risk assessment tools. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:156857. [PMID: 35760183 DOI: 10.1016/j.scitotenv.2022.156857] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 06/06/2022] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Multiple stressors threaten bee health, a major one being pesticides. Bees are simultaneously exposed to multiple pesticides that can cause both lethal and sublethal effects. Risk assessment and most research on bee health, however, focus on lethal individual effects. Here, we performed a systematic literature review and meta-analysis that summarizes and re-interprets the available qualitative and quantitative information on the lethal, sublethal, and combined toxicity of a comprehensive range of pesticides on bees. We provide results (1970-2019) for multiple bee species (Bombus, Osmia, Megachile, Melipona, Partamona, Scaptotrigona), although most works focused on Apis mellifera L. (78 %). Our harmonised results document the lethal toxicity of pesticides in bees (n = 377 pesticides) and the types of sublethal testing methods and related effects that cause a sublethal effect (n = 375 sublethal experiments). We identified the most common combinations of pesticides and mode of actions tested, and summarize the experimental methods, magnitude of the interactions, and robustness of available data (n = 361 experiments). We provide open access searchable, comprehensive, and integrated list of pesticides and their levels causing lethal, sublethal, and combined effects. We report major data gaps related to pesticide's sublethal (71 %) and combined (e.g., ~99 %) toxicity. We identified pesticides and mode of actions of greatest concern in terms of sublethal (chlorothalonil, pymetrozine, glyphosate; neonicotinoids) and combined (tau-fluvalinate combinations; acetylcholinesterase inhibitors and neonicotinoids) effects. Although certain pesticides have faced regulatory restrictions in specific countries (chlorothalonil, pymetrozine, neonicotinoids), most are still widely used worldwide (e.g., glyphosate). This work aims at facilitating the implementation of more comprehensive and harmonised research and risk assessments, considering sublethal and combined effects. To ensure safeguarding pollinators and the environment, we advocate for a more refined and holistic assessment that do not only focus on lethality but uses harmonised methods to test sublethal and relevant combinations.
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Affiliation(s)
- Simone Tosi
- Paris-Est University, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Animal Health, Maisons-Alfort, France; Department of Agricultural, Forest, and Food Sciences, University of Turin, Italy.
| | - Cynthia Sfeir
- Paris-Est University, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Animal Health, Maisons-Alfort, France
| | - Edoardo Carnesecchi
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508, TD, Utrecht, the Netherlands
| | - Dennis vanEngelsdorp
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD, 20742-4454, USA
| | - Marie-Pierre Chauzat
- Paris-Est University, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Animal Health, Maisons-Alfort, France; ANSES, Sophia Antipolis laboratory, Unit of Honey bee Pathology, European Reference Laboratory for Honeybee health, F-06902 Sophia Antipolis, France
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12
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da Costa Domingues CE, Sarmento AMP, Capela NXJ, Costa JM, Mina RMR, da Silva AA, Reis AR, Valente C, Malaspina O, Azevedo-Pereira HMVS, Sousa JP. Monitoring the effects of field exposure of acetamiprid to honey bee colonies in Eucalyptus monoculture plantations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:157030. [PMID: 35777572 DOI: 10.1016/j.scitotenv.2022.157030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/24/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Eucalyptus plantations occupy 26 % of Portuguese forested areas. Its flowers constitute important sources for bees and beekeepers take advantage of this and keep their honey bee colonies within or near the plantations for honey production. Nonetheless, these plantations are susceptible to pests, such as the eucalyptus weevil Gonipterus platensis. To control this weevil, some plantations must be treated with pesticides, which might harm non-target organisms. This study aimed to perform a multifactorial assessment of the health status and development of Apis mellifera iberiensis colonies in two similar landscape windows dominated by Eucalyptus globulus plantations - one used as control and the other with insecticide treatment. In each of the two selected areas, an apiary with five hives was installed and monitored before and after a single application of the insecticide acetamiprid (40 g a.i./ha). Colony health and development, resources use, and pesticide residues accumulation were measured. The results showed that the application of acetamiprid in this area did not alter the health status and development of the colonies. This can be explained by the low levels of residues of acetamiprid detected only in pollen and bee bread samples, ~52 fold lower than the sublethal effect threshold. This could be attributed to the low offer of resources during and after the application event and within the application area, with the consequent foraging outside the sprayed area during that period. Since exposure to pesticides in such complex landscapes seems to be dependent on the spatial and temporal distribution of resources, we highlight some key monitoring parameters and tools that are able to provide reliable information on colony development and use of resources. These tools can be easily applied and can provide a better decision-taking of pesticide application in intensive production systems to decrease the risk of exposure for honey bees.
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Affiliation(s)
- Caio Eduardo da Costa Domingues
- University of Maribor, Faculty of Agriculture and Life Sciences, Pivola 10, 2311 Hoče, Slovenia; Centro de Estudos de Insetos Sociais (CEIS), Departamento de Biologia, Instituto de Biociências (IB), Universidade Estadual Paulista (UNESP) - "Júlio de Mesquita Filho", Rio Claro, Brazil; Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal.
| | - Artur Miguel Paiva Sarmento
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Nuno Xavier Jesus Capela
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - José Miguel Costa
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Rúben Miguel Rodrigues Mina
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - António Alves da Silva
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Ana Raquel Reis
- Altri Florestal, SA, Quinta do Furadouro, 2510-582 Olho Marinho, Portugal
| | - Carlos Valente
- RAIZ - Instituto de Investigação da Floresta e Papel, Quinta de São Francisco, Apartado 15, 3801-501 Aveiro, Portugal
| | - Osmar Malaspina
- Centro de Estudos de Insetos Sociais (CEIS), Departamento de Biologia, Instituto de Biociências (IB), Universidade Estadual Paulista (UNESP) - "Júlio de Mesquita Filho", Rio Claro, Brazil
| | - Henrique M V S Azevedo-Pereira
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal; ForestWISE - Collaborative Laboratory for Integrated Forest & Fire Management, Quinta de Prados, 5001-801 Vila Real, Portugal
| | - José Paulo Sousa
- Centre for Functional Ecology, Associated Laboratory TERRA, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
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Capela N, Sarmento A, Simões S, Azevedo-Pereira HMVS, Sousa JP. Sub-lethal doses of sulfoxaflor impair honey bee homing ability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155710. [PMID: 35526620 DOI: 10.1016/j.scitotenv.2022.155710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Agricultural intensification has increased the number of stressors that pollinators are exposed to. Besides increasing landscape fragmentation that limit the supply of flower resources, intensive agricultural practices relying on the use of pesticides to control agricultural pests also affect non-target organisms like honey bees. The use of most pesticides containing neonicotinoids has been severely restricted in the European Union, leaving pesticides containing acetamiprid as the only ones that are still authorized. In the meantime, new substances like sulfoxaflor, that have a similar mode of action acting on the insect's nicotinic acetylcholine receptors (nAChR), have been approved for agricultural use. In Europe and USA, the use of pesticides containing this active ingredient is limited due to toxic effects already reported on bees, but no restrictions regarding this matter were applied in other countries (e.g., Brazil). In this study, homing ability tests with acetamiprid and sulfoxaflor were performed, in which honey bees were fed with three sub-lethal doses from each substance. After exposure, each honey bee was equipped with an RFID chip and released 1 km away from the colony to evaluate their homing ability. No significant effects were detected in honey bees fed with 32, 48 and 61 ng of acetamiprid while a poor performance on their homing ability, with only 28% of them reaching the colony instead of 75%, was detected at a 26 ng/a.s./bee dose of sulfoxaflor. Although, both pesticides act on the nAChR, the higher sulfoxaflor toxicity might be related with the honey bees detoxifying mechanisms, which are more effective on cyano-based neonicotinoids (i.e., acetamiprid) than sulfoximines. With this study we encourage the use of homing ability tests to be a suitable candidate to integrate the future risk assessment scheme, providing valuable data to models predicting effects on colony health that emerge from the individual actions of each bee.
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Affiliation(s)
- Nuno Capela
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal.
| | - Artur Sarmento
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
| | - Sandra Simões
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
| | - Henrique M V S Azevedo-Pereira
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal; ForestWISE - Collaborative Laboratory for Integrated Forest & Fire Management, Quinta de Prados, 5001-801 Vila Real, Portugal
| | - José Paulo Sousa
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
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14
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Benchaâbane S, Ayad AS, Loucif-Ayad W, Soltani N. Multibiomarker responses after exposure to a sublethal concentration of thiamethoxam in the African honeybee (Apis mellifera intermissa). Comp Biochem Physiol C Toxicol Pharmacol 2022; 257:109334. [PMID: 35351619 DOI: 10.1016/j.cbpc.2022.109334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/15/2022] [Accepted: 03/23/2022] [Indexed: 11/03/2022]
Abstract
Thiamethoxam is an insecticide mainly used in agriculture to control insect pests. However, non-target insect species, such as honeybees, may also be impacted. In this study, adults of Apis mellifera intermissa were orally exposed under laboratory conditions to a sublethal concentration of thiamethoxam (CL25= 0.17 ng/μl) for 9 days and the effects were evaluated at the biochemical level, by monitoring specific oxidative stress and neuronal biomarkers. Results showed an increase in the antioxidant enzymes, glutatione-S-transferase (GST), catalase (CAT) and glutathione peroxidase (GPx) and in content of malondialdehyde (MDA). The activity of acetylcholinesterase (AChE) was downregulated as evidence of a neurotoxic action and no significant change was observed in glutathione (GSH). Exposure to the insecticide thiamethoxam induced oxidative stress and defense mechanisms affecting honeybee physiology.
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Affiliation(s)
- S Benchaâbane
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria.
| | - A S Ayad
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria
| | - W Loucif-Ayad
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria; Faculty of Medicine, Badji Mokhtar University, Annaba 23000, Algeria
| | - N Soltani
- Laboratory of Applied Animal Biology, Department of Biology, Faculty of Sciences, Badji Mokhtar University, Annaba 23000, Algeria
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15
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Rundlöf M, Stuligross C, Lindh A, Malfi RL, Burns K, Mola JM, Cibotti S, Williams NM. Flower plantings support wild bee reproduction and may also mitigate pesticide exposure effects. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maj Rundlöf
- Department of Biology, Landscape Ecotoxicology Lund University Lund Sweden
- Department of Entomology and Nematology University of California Davis CA USA
| | - Clara Stuligross
- Department of Entomology and Nematology University of California Davis CA USA
- Graduate Group in Ecology University of California Davis CA USA
| | - Arvid Lindh
- Department of Biology, Landscape Ecotoxicology Lund University Lund Sweden
- Department of Entomology and Nematology University of California Davis CA USA
| | - Rosemary L. Malfi
- Department of Entomology and Nematology University of California Davis CA USA
| | - Katherine Burns
- Department of Entomology and Nematology University of California Davis CA USA
| | - John M. Mola
- Department of Entomology and Nematology University of California Davis CA USA
- Graduate Group in Ecology University of California Davis CA USA
- U.S. Geological Survey, Fort Collins Science Center Fort Collins CO USA
| | - Staci Cibotti
- Department of Entomology and Nematology University of California Davis CA USA
| | - Neal M. Williams
- Department of Entomology and Nematology University of California Davis CA USA
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Sabella G, Mulè R, Robba L, Agrò A, Manachini B. Could Europe Apply a Suitable Control Method for the Small Hive Beetle (Coleoptera: Nitidulidae)? JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:401-411. [PMID: 35217874 DOI: 10.1093/jee/toac001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Indexed: 06/14/2023]
Abstract
The European bee, Apis mellifera L. (Hymenoptera: Apidae), is a fundamental resource for the pollination of a great variety of botanical species used by humans for sustenance. Over the last few decades, bee colonies have become vulnerable to a new pest that has advanced beyond its native sub-Saharan territory: the small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae). This currently presents a pressing problem in the United States and Australia, but it has also been recorded in Portugal and Italy and it is likely to spread in the rest of Europe too. This study represents a systematic review, based on EFSA guidelines, of the various control treatments for small hive beetles in order to identify the most effective methods as well as, those with no effects on bee colonies. The results show that the bulk of these studies were performed in the United States and that a number of treatments are suitable for the control of A. tumida, though some have negative effects on bees while others have low effectiveness or are ineffective. The best results are those with the entomopathogenic nematodes of the genus Steinernema and Heterorhabditis, but also with formic acid or diatomaceous earth. Various products containing insecticides have been effective, for example, Perizin (Bayer), GardStar (Y-Tex), CheckMite+ strips (Bayer), but Apithor (Apithor ) cannot be used in Europe because it contains Fipronil, which has been banned since 2013. Some common products like bleach and detergent have also been effective.
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Affiliation(s)
- Giorgio Sabella
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, viale delle Scienze N. 13., Palermo, Italy
| | - Rosaria Mulè
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, viale delle Scienze N. 13., Palermo, Italy
| | - Lavinia Robba
- International School Palermo (ISP), 38/42, Via Piersanti Mattarella Palermo, Italy
| | - Alfonso Agrò
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, viale delle Scienze N. 13., Palermo, Italy
| | - Barbara Manachini
- Department of Agricultural, Food and Forest Sciences (SAAF), University of Palermo, viale delle Scienze N. 13., Palermo, Italy
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Sensitivity of Buff-Tailed Bumblebee (Bombus terrestris L.) to Insecticides with Different Mode of Action. INSECTS 2022; 13:insects13020184. [PMID: 35206757 PMCID: PMC8879041 DOI: 10.3390/insects13020184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/26/2022] [Accepted: 02/06/2022] [Indexed: 12/10/2022]
Abstract
Simple Summary Several neonicotinoid insecticides that were once widely used for pest control are currently banned for outdoor use in the European Union (EU) because they pose a risk to bees. This restriction meant that farmers had to look for alternatives for pest management and use known insecticides or new substances with supposedly more bee-friendly characteristics. We evaluated the toxicity of six insecticides on buff-tailed bumblebee workers (Bombus terrestris): two banned neonicotinoids (imidacloprid, thiacloprid), two pyrethroids (deltamethrin, esfenvalerate), one sulfoximine (sulfoxaflor) and a microbial insecticide based on Bacillus thuringiensis toxins, which are present in genetically modified (Bt) maize. The results obtained show that certain insecticides in use have higher acute toxicity to B. terrestris than some of the banned neonicotinoids. Abstract Systemic insecticides are recognized as one of the drivers of the worldwide bee decline as they are exposed to them through multiple pathways. Specifically, neonicotinoids, some of which are banned for outdoor use in the European Union (EU), have been pointed out as a major cause of bee collapse. Thus, farmers have had to look for alternatives for pest control and use known insecticides or new substances reportedly less harmful to bees. We evaluated the oral acute toxicity of six insecticides (three of them systemic: imidacloprid, thiacloprid and sulfoxaflor) with four different modes of action on buff-tailed bumblebee workers (Bombus terrestris): two banned neonicotinoids (imidacloprid, thiacloprid), two pyrethroids (deltamethrin, esfenvalerate), one sulfoximine (sulfoxaflor) and a microbial insecticide based on Bacillus thuringiensis toxins, present in genetically modified (Bt) maize. The microbial insecticide only caused mortality to bumblebee workers at extremely high concentrations, so it is expected that Bt maize does not pose a risk to them. The toxicity of the other five insecticides on bumblebees was, from highest to lowest: imidacloprid, sulfoxaflor, deltamethrin, esfenvalerate and thiacloprid. This outcome suggests that certain insecticides in use are more toxic to B. terrestris than some banned neonicotinoids. Further chronic toxicity studies, under realistic conditions, are necessary for a proper risk assessment.
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Roberts AJ, Thizy D. Articulating ethical principles guiding Target Malaria's engagement strategy. Malar J 2022; 21:35. [PMID: 35123487 PMCID: PMC8818152 DOI: 10.1186/s12936-022-04062-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 01/26/2022] [Indexed: 12/31/2022] Open
Abstract
Progress in gene drive research has engendered a lively discussion about community engagement and the ethical standards the work hinges on. While there is broad agreement regarding ethical principles and established best practices for conducting clinical public health research, projects developing area-wide vector control technologies and initiating ambitious engagement strategies raise specific questions: who to engage, when to engage, and how? When responding to these fundamental questions, with few best practices available for guidance, projects need to reflect on and articulate the ethical principles that motivate and justify their approach. Target Malaria is a not-for-profit research consortium that aims to develop and share malaria control and elimination technology. The consortium is currently investigating the potential of a genetic technique called gene drive to control populations of malaria vectoring mosquito species Anopheles gambiae. Due to the potentially broad geographical, environmental impact of gene drive technology, Target Malaria has committed to a robust form of tailored engagement with the local communities in Burkina Faso, Mali, and Uganda, where research activities are currently taking place. This paper presents the principles guiding Target Malaria's engagement strategy. Herein the authors (i) articulate the principles; (ii) explain the rationale for selecting them; (iii) share early lessons about the application of the principles. Since gene drive technology is an emerging technology, with few best practices available for guidance, the authors hope by sharing these lessons, to add to the growing literature regarding engagement strategies and practices for area-wide vector control, and more specifically, for gene drive research.
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Affiliation(s)
- Aaron J Roberts
- Institute On Ethics and Policy for Innovation, McMaster University, Hamilton, Canada
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19
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Castle D, Alkassab AT, Bischoff G, Steffan-Dewenter I, Pistorius J. High nutritional status promotes vitality of honey bees and mitigates negative effects of pesticides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151280. [PMID: 34755614 DOI: 10.1016/j.scitotenv.2021.151280] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Honey bee health is affected by multiple stressors, such as the exposure to plant protection products (PPPs), dietary limitation, monofloral diets and pressure of diseases and pathogens and their interactions. Here, we analysed the interacting effects of plant protection products and low nutritional pollen source on honey bee health under semi-field conditions. We established a healthy honey bee colony in each of 24 tents, planted either with monofloral maize, maize with a diverse flower strip or with monofloral Phacelia tanacetifolia. To evaluate the interaction between exposure to PPPs and nutritional status, a mixture of the insecticide thiacloprid and the fungicide prochloraz was applied. For each colony, we investigated brood capping rate as well as adult longevity, body and head weight, and enzyme activity of acetylcholinesterase and P450 reductase of newly hatched worker bees. We found a significant reduced capping rate in treated maize compared to flowering strips and Phacelia, but no interaction effect between pesticide treatment and nutritional status on capping rate. The response to treatment on the longevity of adults differed significantly between maize and Phacelia, with flower strips being intermediate, indicating interaction effects of PPP treatment and low pollen quality in maize compared to Phacelia and flowering strip treatments. Head weight of newly hatched worker bees showed significant interaction of nutritional status and treatment of PPPs. PPPs slightly increased body weight in all nutritional statuses, except for Phacelia. Enzyme activity of acetylcholinesterase and P450 reductase showed significant different responses between maize and Phacelia to PPP exposure, but not between maize and flowering strip. Our results support the hypothesis that higher pollen quality promotes development of larvae and pupae, longevity of adults and detoxification of PPPs.
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Affiliation(s)
- Denise Castle
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Bee Protection, Messeweg 11/12, Braunschweig, Germany; University of Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, Würzburg, Germany.
| | - Abdulrahim T Alkassab
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Bee Protection, Messeweg 11/12, Braunschweig, Germany
| | - Gabriela Bischoff
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Bee Protection, Königin-Luise-Straße 19, Berlin, Germany
| | - Ingolf Steffan-Dewenter
- University of Würzburg, Department of Animal Ecology and Tropical Biology, Biocenter, Am Hubland, Würzburg, Germany
| | - Jens Pistorius
- Julius Kühn Institute (JKI), Federal Research Centre for Cultivated Plants, Institute for Bee Protection, Messeweg 11/12, Braunschweig, Germany
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20
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Schuhmann A, Schmid AP, Manzer S, Schulte J, Scheiner R. Interaction of Insecticides and Fungicides in Bees. FRONTIERS IN INSECT SCIENCE 2022; 1:808335. [PMID: 38468891 PMCID: PMC10926390 DOI: 10.3389/finsc.2021.808335] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 12/29/2021] [Indexed: 03/13/2024]
Abstract
Honeybees and wild bees are among the most important pollinators of both wild and cultivated landscapes. In recent years, however, a significant decline in these pollinators has been recorded. This decrease can have many causes including the heavy use of biocidal plant protection products in agriculture. The most frequent residues in bee products originate from fungicides, while neonicotinoids and, to a lesser extent, pyrethroids are among the most popular insecticides detected in bee products. There is abundant evidence of toxic side effects on honeybees and wild bees produced by neonicotinoids, but only few studies have investigated side effects of fungicides, because they are generally regarded as not being harmful for bees. In the field, a variety of substances are taken up by bees including mixtures of insecticides and fungicides, and their combinations can be lethal for these pollinators, depending on the specific group of insecticide or fungicide. This review discusses the different combinations of major insecticide and fungicide classes and their effects on honeybees and wild bees. Fungicides inhibiting the sterol biosynthesis pathway can strongly increase the toxicity of neonicotinoids and pyrethroids. Other fungicides, in contrast, do not appear to enhance toxicity when combined with neonicotinoid or pyrethroid insecticides. But the knowledge on possible interactions of fungicides not inhibiting the sterol biosynthesis pathway and insecticides is poor, particularly in wild bees, emphasizing the need for further studies on possible effects of insecticide-fungicide interactions in bees.
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Affiliation(s)
- Antonia Schuhmann
- Behavioral Physiology and Sociobiology, University of Würzburg, Würzburg, Germany
| | - Anna Paulina Schmid
- Behavioral Physiology and Sociobiology, University of Würzburg, Würzburg, Germany
| | - Sarah Manzer
- Behavioral Physiology and Sociobiology, University of Würzburg, Würzburg, Germany
| | - Janna Schulte
- Behavioral Physiology and Sociobiology, University of Würzburg, Würzburg, Germany
- Institute of Biology and Environmental Sciences, University of Oldenburg, Oldenburg, Germany
| | - Ricarda Scheiner
- Behavioral Physiology and Sociobiology, University of Würzburg, Würzburg, Germany
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21
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Xiao J, He Q, Liu Q, Wang Z, Yin F, Chai Y, Yang Q, Jiang X, Liao M, Yu L, Jiang W, Cao H. Analysis of honey bee exposure to multiple pesticide residues in the hive environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 805:150292. [PMID: 34536857 DOI: 10.1016/j.scitotenv.2021.150292] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/07/2021] [Accepted: 09/07/2021] [Indexed: 06/13/2023]
Abstract
Since the loss of honeybees in hives could have a greater impact on colony health than those of their foraging bees, it is imperative to know beehives' pesticide exposure via oral ingestion of contaminated in-hive matrices. Here, a 4-year monitoring survey of 64 pesticide residues in pollen, nectar and related beehive matrices (beebread and honey) from China's main honey producing areas was carried out using a modified version of the QuEChERS multi-residue method. The results showed that 93.6% of pollen, 81.5% of nectar, 96.6% of beebread, and 49.3% of honey containing at least one target pesticide were detected either at or above the method detection limits (MDLs), respectively, with up to 19 pesticides found per sample. Carbendazim was the most frequently detected pesticide (present in >85% of the samples), and pyrethroids were also abundant (median concentration = 134.3-279.0 μg/kg). The transfer of pesticides from the environment into the beehive was shown, but the pesticide transference ratio may be affected by complex factors. Although the overall risk to colony health from pesticides appears to be at an acceptable level, the hazard quotient/hazard index (HQ/HI) value revealed that pyrethroids were clearly the most influential contributor, accounting for up to 45% of HI. Collectively, these empirical findings provide further insights into the extent of contamination caused by agricultural pesticide use on honeybee colonies.
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Affiliation(s)
- Jinjing Xiao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Qibao He
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Qiongqiong Liu
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Zhiyuan Wang
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Fang Yin
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Yuhao Chai
- Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Qing Yang
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Xingchuan Jiang
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Min Liao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Linsheng Yu
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China
| | - Wayne Jiang
- Department of Entomology, Michigan State University, 48824 East Lansing, MI, USA
| | - Haiqun Cao
- School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Anhui Province Key Laboratory of Integrated Pest Management on Crops, Hefei, Anhui Province 230036, China.
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22
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Astuto MC, Di Nicola MR, Tarazona JV, Rortais A, Devos Y, Liem AKD, Kass GEN, Bastaki M, Schoonjans R, Maggiore A, Charles S, Ratier A, Lopes C, Gestin O, Robinson T, Williams A, Kramer N, Carnesecchi E, Dorne JLCM. In Silico Methods for Environmental Risk Assessment: Principles, Tiered Approaches, Applications, and Future Perspectives. Methods Mol Biol 2022; 2425:589-636. [PMID: 35188648 DOI: 10.1007/978-1-0716-1960-5_23] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This chapter aims to introduce the reader to the basic principles of environmental risk assessment of chemicals and highlights the usefulness of tiered approaches within weight of evidence approaches in relation to problem formulation i.e., data availability, time and resource availability. In silico models are then introduced and include quantitative structure-activity relationship (QSAR) models, which support filling data gaps when no chemical property or ecotoxicological data are available. In addition, biologically-based models can be applied in more data rich situations and these include generic or species-specific models such as toxicokinetic-toxicodynamic models, dynamic energy budget models, physiologically based models, and models for ecosystem hazard assessment i.e. species sensitivity distributions and ultimately for landscape assessment i.e. landscape-based modeling approaches. Throughout this chapter, particular attention is given to provide practical examples supporting the application of such in silico models in real-world settings. Future perspectives are discussed to address environmental risk assessment in a more holistic manner particularly for relevant complex questions, such as the risk assessment of multiple stressors and the development of harmonized approaches to ultimately quantify the relative contribution and impact of single chemicals, multiple chemicals and multiple stressors on living organisms.
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Affiliation(s)
| | | | | | - A Rortais
- European Food Safety Authority, Parma, Italy
| | - Yann Devos
- European Food Safety Authority, Parma, Italy
| | | | | | | | | | | | | | | | | | | | | | - Antony Williams
- Center for Computational Toxicology and Exposure, Office of Research and Development, U.S. Environmental Protection Agency (U.S. EPA), Research Triangle Park, NC, USA
| | - Nynke Kramer
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
| | - Edoardo Carnesecchi
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
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23
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Kiljanek T, Niewiadowska A, Małysiak M, Posyniak A. Miniaturized multiresidue method for determination of 267 pesticides, their metabolites and polychlorinated biphenyls in low mass beebread samples by liquid and gas chromatography coupled with tandem mass spectrometry. Talanta 2021; 235:122721. [PMID: 34517589 DOI: 10.1016/j.talanta.2021.122721] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 11/16/2022]
Abstract
Current work presents developed and validated miniaturized method for residue analysis of 261 pesticides and their metabolites as well as 6 congeners of non-dioxin like polychlorinated biphenyls (ndl-PCB) in a very low mass beebread sample. Sample preparation is based on modified QuEChERS protocol with all steps miniaturized to enable multiresidue analysis of sample with extremely low weight. Sample of beebread (0.3 g) was extracted with 1 mL of acetonitrile containing 5% formic acid and ammonium formate salt were added, then extract was subjected to clean-up by freezing and two-step dispersive solid phase extraction (dSPE) with a Supel QuE Verde sorbents (Supelclean ENVI-Carb Y; Supelclean PSA; Z-Sep+; magnesium sulfate). After 1st step dSPE a portion of extract was analyzed by liquid chromatography tandem mass spectrometry (LC-MS/MS) for 200 pesticide residues. Remaining extract was subjected to 2nd step dSPE clean-up by another Supel QuE Verde and then after concentration and solvent exchange it was analyzed by gas chromatography tandem mass spectrometry (GC-MS/MS) for another 61 pesticide and 6 ndl-PCB residues. Method enables determination of residues of 101 insecticides, 72 herbicides, 67 fungicides, 10 acaricides, 6 growth regulators, 5 veterinary drugs and 6 ndl-PCB's. Particular attention was paid to the pesticides being active substances of plant protection products recommended for the protection of winter oilseed rape and apple orchards which during their blooming periods are one of the most attractive sources of food for pollinators and could serve as representatives of other economically important crops. Method was validated according to the Guidance document SANTE/12682/2019 at six concentration levels from 0.001 to 0.5 mg kg-1. The analysis of beebread samples spiked at the level of 0.01 mg kg-1showed mean recovery (trueness) value of about 98% and RSDr (precision) below 20%. The small weight of the sample did not adversely affect the limits of quantification and 75% of analytes could be quantified at least at concentration of 0.005 mg kg-1. Developed mini-method was tested in the analysis of beebread samples, each extracted from individual cell of honeycomb. It is the first time when analyses at single comb cell level were possible.
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Affiliation(s)
- Tomasz Kiljanek
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100, Puławy, Poland.
| | - Alicja Niewiadowska
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100, Puławy, Poland
| | - Marta Małysiak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100, Puławy, Poland
| | - Andrzej Posyniak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100, Puławy, Poland
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24
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Minucci JM, Curry R, DeGrandi‐Hoffman G, Douglass C, Garber K, Purucker ST. Inferring pesticide toxicity to honey bees from a field-based feeding study using a colony model and Bayesian inference. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2021; 31:e02442. [PMID: 34374161 PMCID: PMC8928141 DOI: 10.1002/eap.2442] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 02/19/2021] [Accepted: 04/16/2021] [Indexed: 05/16/2023]
Abstract
Honey bees are crucial pollinators for agricultural crops but are threatened by a multitude of stressors including exposure to pesticides. Linking our understanding of how pesticides affect individual bees to colony-level responses is challenging because colonies show emergent properties based on complex internal processes and interactions among individual bees. Agent-based models that simulate honey bee colony dynamics may be a tool for scaling between individual and colony effects of a pesticide. The U.S. Environmental Protection Agency (USEPA) and U.S. Department of Agriculture (USDA) are developing the VarroaPop + Pesticide model, which simulates the dynamics of honey bee colonies and how they respond to multiple stressors, including weather, Varroa mites, and pesticides. To evaluate this model, we used Approximate Bayesian Computation to fit field data from an empirical study where honey bee colonies were fed the insecticide clothianidin. This allowed us to reproduce colony feeding study data by simulating colony demography and mortality from ingestion of contaminated food. We found that VarroaPop + Pesticide was able to fit general trends in colony population size and structure and reproduce colony declines from increasing clothianidin exposure. The model underestimated adverse effects at low exposure (36 µg/kg), however, and overestimated recovery at the highest exposure level (140 µg/kg), for the adult and pupa endpoints, suggesting that mechanisms besides oral toxicity-induced mortality may have played a role in colony declines. The VarroaPop + Pesticide model estimates an adult oral LD50 of 18.9 ng/bee (95% CI 10.1-32.6) based on the simulated feeding study data, which falls just above the 95% confidence intervals of values observed in laboratory toxicology studies on individual bees. Overall, our results demonstrate a novel method for analyzing colony-level data on pesticide effects on bees and making inferences on pesticide toxicity to individual bees.
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Affiliation(s)
- Jeffrey M. Minucci
- Office of Research and DevelopmentCenter for Public Health and Environmental AssessmentU.S. Environmental Protection Agency109 TW Alexander DriveDurhamNorth Carolina27709USA
| | - Robert Curry
- Crystal River Consulting LLC1909 Stonecastle DriveKellerTexas76262USA
| | | | - Cameron Douglass
- USDA‐Office of Pest Management Policy1400 Independence Avenue SWWashingtonD.C.20250USA
| | - Kris Garber
- Office of Pesticide ProgramsU.S. Environmental Protection Agency1200 Pennsylvania Avenue NWWashingtonD.C.20460USA
| | - S. Thomas Purucker
- Office of Research and DevelopmentCenter for Computational Toxicology and ExposureU.S. Environmental Protection Agency109 TW Alexander DriveDurhamNorth Carolina27709USA
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25
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Decio P, Miotelo L, Pereira FDC, Roat TC, Marin-Morales MA, Malaspina O. Enzymatic responses in the head and midgut of Africanized Apis mellifera contaminated with a sublethal concentration of thiamethoxam. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 223:112581. [PMID: 34352576 DOI: 10.1016/j.ecoenv.2021.112581] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/08/2021] [Accepted: 07/28/2021] [Indexed: 06/13/2023]
Abstract
The increasing use of insecticides, promoted by the intensification of agriculture, has raised concerns about their influence on the decline of bee colonies, which play a fundamental role in pollination. Thus, it is fundamental to elucidate the effects of insecticides on bees. This study investigated the damage caused by a sublethal concentration of thiamethoxam - TMX (0.0227 ng/μL of feed) in the head and midgut of Africanized Apis mellifera, by analyzing the enzymatic biomarkers, oxidative stress, and occurrence of lipid peroxidation. The data showed that the insecticide increased acetylcholinesterase activity (AChE) and glutathione-S-transferase (GST), whereas carboxylesterase (CaE3) activity decreased in the heads. Our results indicate that the antioxidant enzymes were less active in the head because only glutathione peroxidase (GPX) showed alterations. In the midgut, there were no alkaline phosphatase (ALP) or superoxide dismutase (SOD) responses and a decrease in the activity of CaE was observed. Otherwise, there was an increase in GPX, and the TBARS (thiobarbituric acid reactive substances) assay also showed differences in the midgut. The TBARS (thiobarbituric acid reactive substances) assay also showed differences in the midgut. The results showed enzymes such as CaE3, GST, AChE, ALP, SOD, and GPX, as well as the TBARS assay, are useful biomarkers on bees. They may be used in combination as a promising tool for characterizing bee exposure to insecticides.
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Affiliation(s)
- Pâmela Decio
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil.
| | - Lucas Miotelo
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil
| | - Franco Dani Campos Pereira
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil; NUPEFEN - Núcleo de pesquisas em Educação Física, Estética e Nutrição, Claretiano University Center, Avenida Santo Antônio Maria Claret, 1724. CEP: 13503-257, Rio Claro, São Paulo, Brazil
| | - Thaisa Cristina Roat
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil
| | - Maria Aparecida Marin-Morales
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil
| | - Osmar Malaspina
- São Paulo State University (Unesp), Institute of Biosciences, Av. 24A, 1515. CEP: 13506-900, Rio Claro, São Paulo, Brazil
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26
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Caliani I, Campani T, Conti B, Cosci F, Bedini S, D'Agostino A, Giovanetti L, Di Noi A, Casini S. First application of an Integrated Biological Response index to assess the ecotoxicological status of honeybees from rural and urban areas. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:47418-47428. [PMID: 33891238 PMCID: PMC8384815 DOI: 10.1007/s11356-021-14037-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/16/2021] [Indexed: 05/05/2023]
Abstract
Understanding the effects of environmental contaminants on honeybees is essential to minimize their impacts on these important pollinating insects. The aim of this study was to assess the ecotoxicological status of honeybees in environments undergoing different anthropic pressure: a wood (reference site), an orchard, an agricultural area, and an urban site, using a multi-biomarker approach. To synthetically represent the ecotoxicological status of the honeybees, the responses of the single biomarkers were integrated by the Integrated Biological Response (IBRv2) index. Overall, the strongest alteration of the ecotoxicological status (IBRv2 = 7.52) was detected in the bees from the orchard due to the alteration of metabolic and genotoxicity biomarkers indicating the presence of pesticides, metals, and lipophilic compounds. Honeybees from the cultivated area (IBRv2 = 7.18) revealed an alteration especially in neurotoxicity, metabolic, and genotoxicity biomarkers probably related to the presence of pesticides, especially fungicides. Finally, in the urban area (IBRv2 = 6.60), the biomarker results (GST, lysozyme, and hemocytes) indicated immunosuppression in the honeybees and the effects of the presence of lipophilic compounds and metals in the environment.
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Affiliation(s)
- Ilaria Caliani
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli, 4, 53100, Siena, Italy
| | - Tommaso Campani
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli, 4, 53100, Siena, Italy.
| | - Barbara Conti
- Department of Agriculture, Food and Environment Entomology, University of Pisa, via del Borghetto, 80, 56124, Pisa, Italy
| | - Francesca Cosci
- Department of Agriculture, Food and Environment Entomology, University of Pisa, via del Borghetto, 80, 56124, Pisa, Italy
| | - Stefano Bedini
- Department of Agriculture, Food and Environment Entomology, University of Pisa, via del Borghetto, 80, 56124, Pisa, Italy
| | - Antonella D'Agostino
- Department of Management and Quantitative Studies, University of Naples "Parthenope", via Generale Parisi, 13, 80132, Napoli, Italy
| | - Laura Giovanetti
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli, 4, 53100, Siena, Italy
| | - Agata Di Noi
- Department of Life Sciences, University of Siena, via Mattioli, 4, 53100, Siena, Italy
| | - Silvia Casini
- Department of Physical, Earth and Environmental Sciences, University of Siena, via Mattioli, 4, 53100, Siena, Italy
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27
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Straub L, Villamar‐Bouza L, Bruckner S, Chantawannakul P, Kolari E, Maitip J, Vidondo B, Neumann P, Williams GR. Negative effects of neonicotinoids on male honeybee survival, behaviour and physiology in the field. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14000] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lars Straub
- Institute of Bee Health Vetsuisse Faculty University of Bern Bern Switzerland
- Swiss Bee Research CentreAgroscope Bern Switzerland
| | | | - Selina Bruckner
- Institute of Bee Health Vetsuisse Faculty University of Bern Bern Switzerland
- Department of Entomology and Plant Pathology Auburn University Auburn AL USA
| | - Panuwan Chantawannakul
- Bee Protection Laboratory Department of Biology Faculty of Science Chiang Mai University Chiang Mai Thailand
- Environmental Science Research Center Faculty of Science Chiang Mai University Chiang Mai Thailand
| | - Eleonora Kolari
- Institute of Bee Health Vetsuisse Faculty University of Bern Bern Switzerland
| | - Jakkrawut Maitip
- Bee Protection Laboratory Department of Biology Faculty of Science Chiang Mai University Chiang Mai Thailand
- Faculty of Science, Energy and Environment King Mongkut’s University of Technology North Bangkok Rayong Thailand
| | - Beatriz Vidondo
- Veterinary Public Health Institute Vetsuisse Faculty University of Bern Bern Switzerland
| | - Peter Neumann
- Institute of Bee Health Vetsuisse Faculty University of Bern Bern Switzerland
- Swiss Bee Research CentreAgroscope Bern Switzerland
| | - Geoffrey R. Williams
- Institute of Bee Health Vetsuisse Faculty University of Bern Bern Switzerland
- Swiss Bee Research CentreAgroscope Bern Switzerland
- Bee Protection Laboratory Department of Biology Faculty of Science Chiang Mai University Chiang Mai Thailand
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28
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Almasri H, Tavares DA, Tchamitchian S, Pélissier M, Sené D, Cousin M, Brunet JL, Belzunces LP. Toxicological status changes the susceptibility of the honey bee Apis mellifera to a single fungicidal spray application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:42807-42820. [PMID: 33822299 DOI: 10.1007/s11356-021-13747-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
During all their life stages, bees are exposed to residual concentrations of pesticides, such as insecticides, herbicides, and fungicides, stored in beehive matrices. Fungicides are authorized for use during crop blooms because of their low acute toxicity to honey bees. Thus, a bee that might have been previously exposed to pesticides through contaminated food may be subjected to fungicide spraying when it initiates its first flight outside the hive. In this study, we assessed the effects of acute exposure to the fungicide in bees with different toxicological statuses. Three days after emergence, bees were subjected to chronic exposure to the insecticide imidacloprid and the herbicide glyphosate, either individually or in a binary mixture, at environmental concentrations of 0.01 and 0.1 μg/L in food (0.0083 and 0.083 μg/kg) for 30 days. Seven days after the beginning of chronic exposure to the pesticides (10 days after emergence), the bees were subjected to spraying with the fungicide difenoconazole at the registered field dosage. The results showed a delayed significant decrease in survival when honey bees were treated with the fungicide. Fungicide toxicity increased when honey bees were chronically exposed to glyphosate at the lowest concentration, decreased when they were exposed to imidacloprid, and did not significantly change when they were exposed to the binary mixture regardless of the concentration. Bees exposed to all of these pesticide combinations showed physiological disruptions, revealed by the modulation of several life history traits related mainly to metabolism, even when no effect of the other pesticides on fungicide toxicity was observed. These results show that the toxicity of active substances may be misestimated in the pesticide registration procedure, especially for fungicides.
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Affiliation(s)
- Hanine Almasri
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Daiana Antonia Tavares
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Sylvie Tchamitchian
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Michel Pélissier
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Déborah Sené
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Marianne Cousin
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Jean-Luc Brunet
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France
| | - Luc P Belzunces
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, F-84000, Avignon, France.
- INRAE, UR 406 A&E, Laboratoire de Toxicologie Environnementale, CS 40509, 84914, Avignon Cedex 9, France.
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Overview of Bee Pollination and Its Economic Value for Crop Production. INSECTS 2021; 12:insects12080688. [PMID: 34442255 PMCID: PMC8396518 DOI: 10.3390/insects12080688] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/13/2021] [Accepted: 07/23/2021] [Indexed: 02/06/2023]
Abstract
Simple Summary There is a rising demand for food security in the face of threats posed by a growing human population. Bees as an insect play a crucial role in crop pollination alongside other animal pollinators such as bats, birds, beetles, moths, hoverflies, wasps, thrips, and butterflies and other vectors such as wind and water. Bees contribute to the global food supply via pollinating a wide range of crops, including fruits, vegetables, oilseeds, legumes, etc. The economic benefit of bees to food production per year was reported including the cash crops, i.e., coffee, cocoa, almond and soybean, compared to self-pollination. Bee pollination improves the quality and quantity of fruits, nuts, and oils. Bee colonies are faced with many challenges that influence their growth, reproduction, and sustainability, particularly climate change, pesticides, land use, and management strength, so it is important to highlight these factors for the sake of gainful pollination. Abstract Pollination plays a significant role in the agriculture sector and serves as a basic pillar for crop production. Plants depend on vectors to move pollen, which can include water, wind, and animal pollinators like bats, moths, hoverflies, birds, bees, butterflies, wasps, thrips, and beetles. Cultivated plants are typically pollinated by animals. Animal-based pollination contributes to 30% of global food production, and bee-pollinated crops contribute to approximately one-third of the total human dietary supply. Bees are considered significant pollinators due to their effectiveness and wide availability. Bee pollination provides excellent value to crop quality and quantity, improving global economic and dietary outcomes. This review highlights the role played by bee pollination, which influences the economy, and enlists the different types of bees and other insects associated with pollination.
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Tosi S, Nieh JC, Brandt A, Colli M, Fourrier J, Giffard H, Hernández-López J, Malagnini V, Williams GR, Simon-Delso N. Long-term field-realistic exposure to a next-generation pesticide, flupyradifurone, impairs honey bee behaviour and survival. Commun Biol 2021; 4:805. [PMID: 34183763 PMCID: PMC8238954 DOI: 10.1038/s42003-021-02336-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 05/11/2021] [Indexed: 02/06/2023] Open
Abstract
The assessment of pesticide risks to insect pollinators have typically focused on short-term, lethal impacts. The environmental ramifications of many of the world's most commonly employed pesticides, such as those exhibiting systemic properties that can result in long-lasting exposure to insects, may thus be severely underestimated. Here, seven laboratories from Europe and North America performed a standardised experiment (a ring-test) to study the long-term lethal and sublethal impacts of the relatively recently approved 'bee safe' butenolide pesticide flupyradifurone (FPF, active ingredient in Sivanto®) on honey bees. The emerging contaminant, FPF, impaired bee survival and behaviour at field-realistic doses (down to 11 ng/bee/day, corresponding to 400 µg/kg) that were up to 101-fold lower than those reported by risk assessments (1110 ng/bee/day), despite an absence of time-reinforced toxicity. Our findings raise concerns about the chronic impact of pesticides on pollinators at a global scale and support a novel methodology for a refined risk assessment.
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Affiliation(s)
- Simone Tosi
- Department of Agricultural, Forest, and Food Sciences, University of Torino, Grugliasco (TO), Italy.
- Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California San Diego, San Diego, CA, USA.
| | - James C Nieh
- Division of Biological Sciences, Section of Ecology, Behavior, and Evolution, University of California San Diego, San Diego, CA, USA
| | | | - Monica Colli
- Ecotoxicological Unit, Biotecnologie BT S.r.l., Todi, Italy
| | | | | | | | - Valeria Malagnini
- Center for Technology Transfer, Edmund Mach Foundation, San Michele all'Adige, Italy
| | - Geoffrey R Williams
- Institute of Bee Health, University of Bern, Bern, Switzerland
- Department of Entomology & Plant Pathology, Auburn University, Auburn, AL, USA
| | - Noa Simon-Delso
- BeeLife European Beekeeping Coordination, Louvain la Neuve, Belgium
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Zhang Y, Chen D, Du M, Ma L, Li P, Qin R, Yang J, Yin Z, Wu X, Xu H. Insights into the degradation and toxicity difference mechanism of neonicotinoid pesticides in honeybees by mass spectrometry imaging. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 774:145170. [PMID: 33607427 DOI: 10.1016/j.scitotenv.2021.145170] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Honeybees are essential for the pollination of a wide variety of crops and flowering plants, whereas they are confronting decline around the world due to the overuse of pesticides, especially neonicotinoids. The mechanism behind the negative impacts of neonicotinoids on honeybees has attracted considerable interest, yet it remains unknown due to the limited insights into the spatiotemporal distribution of pesticides in honeybees. Herein, we demonstrated the use of matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) for the spatiotemporal visualization of neonicotinoids, such as N-nitroguanidine (dinotefuran) and N-cyanoamidine (acetamiprid) compounds, administered by oral application or direct contact, in the whole-body section of honeybees. The MSI results revealed that both dinotefuran and acetamiprid can quickly penetrate various biological barriers and distribute within the whole-body section of honeybees, but acetamiprid can be degraded much faster than dinotefuran. The degradation rate of acetamiprid is significantly decreased when piperonyl butoxide (PBO) is applied, whereas that of dinotefuran remains almost unchanged. These two factors might contribute to the fact that dinotefuran affords a higher toxicity to honeybees than acetamiprid. Moreover, the toxicity and degradation rate of acetamiprid can be affected by co-application with tebuconazole. Taken together, the results presented here indicate that the discrepant toxicity between dinotefuran and acetamiprid does not lie in the difference in their penetration of various biological barriers of honeybees, but in the degradation rate of neonicotinoid pesticides within honeybee tissues. Moreover, new perspectives are given to better understand the causes of the current decline in honeybee populations posed by insecticides, providing guidelines for the precise use of conventional agrochemicals and the rational design of novel pesticide candidates.
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Affiliation(s)
- Yue Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Bio-Pesticide Creation and Application, Guangzhou 510642, China
| | - Dong Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Mingyi Du
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Lianlian Ma
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Ping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Run Qin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Bio-Pesticide Creation and Application, Guangzhou 510642, China
| | - Jiaru Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China
| | - Zhibin Yin
- Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
| | - Xinzhou Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China.
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources and Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education, South China Agricultural University, Guangzhou 510642, China.
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Wilmart O, Legrève A, Scippo ML, Reybroeck W, Urbain B, de Graaf DC, Spanoghe P, Delahaut P, Saegerman C. Honey bee exposure scenarios to selected residues through contaminated beeswax. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145533. [PMID: 33770874 DOI: 10.1016/j.scitotenv.2021.145533] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 01/25/2021] [Accepted: 01/26/2021] [Indexed: 05/11/2023]
Abstract
Twenty-two pesticides and veterinary drugs of which residues were detected in beeswax in Europe were selected according to different criteria. The risk to honey bee health posed by the presence of these residues in wax was assessed based on three exposure scenarios. The first one corresponds to the exposure of larvae following their close contact with wax constituting the cells in which they develop. The second one corresponds to the exposure of larvae following consumption of the larval food that was contaminated from contact with contaminated wax. The third one corresponds to the exposure of adult honey bees following wax chewing when building cells and based on a theoretical worst-case scenario (= intake of contaminants from wax). Following these three scenarios, maximum concentrations which should not be exceeded in beeswax in order to protect honey bee health were calculated for each selected substance. Based on these values, provisional action limits were proposed. Beeswax exceeding these limits should not be put on the market.
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Affiliation(s)
- Olivier Wilmart
- Federal Agency for the Safety of the Food Chain (FASFC), Directorate Control Policy, Staff Direction for Risk Assessment, 55 Boulevard du Jardin Botanique, B-1000 Brussels, Belgium.
| | - Anne Legrève
- Université catholique de Louvain (UCL), Faculty of Bioscience Engineering, Earth & Life Institute (ELI), 2 bte L7.05.03 Croix du Sud, B-1348 Louvain-la-Neuve, Belgium
| | - Marie-Louise Scippo
- Scientific Committee, Federal Agency for the Safety of the Food Chain, 55 Boulevard du Jardin Botanique, B-1000 Brussels, Belgium; University of Liège (ULiège), Faculty of Veterinary Medicine, Department of Food Sciences - Laboratory of Food Analysis, Fundamental and Applied Research for Animals & Health (FARAH) Center, 10 Avenue de Cureghem, B43bis, B-4000 Liège, Sart-Tilman, Belgium
| | - Wim Reybroeck
- Research Institute for Agriculture, Fisheries and Food (ILVO), Technology and Food Science Unit, 370 Brusselsesteenweg, B-9090 Melle, Belgium
| | - Bruno Urbain
- Federal Agency for Medicines and Health Products (FAMHP), Eurostation II, 40/40 Place Victor Horta, B-1060 Brussels, Belgium
| | - Dirk C de Graaf
- Ghent University (UGent), Faculty of Sciences, Laboratory of Molecular Entomology and Bee Pathology, 281 S2 Krijgslaan, B-9000 Ghent, Belgium
| | - Pieter Spanoghe
- Scientific Committee, Federal Agency for the Safety of the Food Chain, 55 Boulevard du Jardin Botanique, B-1000 Brussels, Belgium; Ghent University (UGent), Faculty of Bioscience Engineering, Department of Plants and Crops, 653 Coupure links, B-9000 Ghent, Belgium
| | - Philippe Delahaut
- Scientific Committee, Federal Agency for the Safety of the Food Chain, 55 Boulevard du Jardin Botanique, B-1000 Brussels, Belgium; Centre d'Economie Rurale (CER), Département Santé, 8 Rue de la Science, B-6900 Aye, Belgium
| | - Claude Saegerman
- Scientific Committee, Federal Agency for the Safety of the Food Chain, 55 Boulevard du Jardin Botanique, B-1000 Brussels, Belgium; University of Liège (ULiège), Faculty of Veterinary Medicine, Research Unit of Epidemiology and Risk analysis applied to Veterinary sciences (UREAR-ULiège), Fundamental and Applied Research for Animal and Health (FARAH) Center, Quartier Vallée 2, 7A Avenue de Cureghem, B42, B-4000 Liège, Sart-Tilman, Belgium
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Arpaia S, Smagghe G, Sweet JB. Biosafety of bee pollinators in genetically modified agro-ecosystems: Current approach and further development in the EU. PEST MANAGEMENT SCIENCE 2021; 77:2659-2666. [PMID: 33470515 PMCID: PMC8247894 DOI: 10.1002/ps.6287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/12/2021] [Accepted: 01/20/2021] [Indexed: 05/08/2023]
Abstract
Bee pollinators are an important guild delivering a fundamental input to European agriculture due to the ecological service they provide to crops in addition to the direct economic revenues from apiculture. Bee populations are declining in Europe as a result of the effects of several environmental stressors, both natural and of anthropic origin. Efforts are ongoing in the European Union (EU) to improve monitoring and management of pollinator populations to arrest further declines. Genetically modified (GM) crops are currently cultivated in a limited area in Europe, and an environmental risk assessment (ERA) is required prior to their authorization for cultivation. The possible impacts of GM crops on pollinators are deemed relevant for the ERA. Existing ecotoxicological studies indicate that traits currently expressed in insect-resistant GM plants are unlikely to represent a risk for pollinators. However, new mechanisms of insect resistance are being introduced into GM plants, including novel combinations of Cry toxins and double strand RNA (dsRNA), and an ERA is required to consider lethal and sublethal effects of these new products on nontarget species, including insect pollinators. The evaluation of indirect effects linked to the changes in management practices (e.g. for herbicide-tolerant GM crops) is an important component of EU regulations and a requirement for ERA. This paper reviews current approaches used to test the sensitivity of pollinators to GM plants and their products to determine whether sufficient data are being provided on novel GM plants to satisfy EU risk assessment requirements. © 2021 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Salvatore Arpaia
- TERIN‐BBCENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic DevelopmentRotondellaItaly
| | - Guy Smagghe
- Department of Plants and CropsGhent UniversityGhentBelgium
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Araújo RDS, Bernardes RC, Martins GF. A mixture containing the herbicides Mesotrione and Atrazine imposes toxicological risks on workers of Partamona helleri. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:142980. [PMID: 33121769 DOI: 10.1016/j.scitotenv.2020.142980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/30/2020] [Accepted: 10/04/2020] [Indexed: 06/11/2023]
Abstract
A mixture of Mesotrione and Atrazine (Calaris®) has been reported as an improvement of the atrazine herbicides, which are agrochemicals used for weed control. However, its possible harmful effects on non-target organisms, including pollinators, needs to be better understood. In this work, the effects of the mix of herbicides on food consumption, behaviour (walking distance, and meandering), and the morphology of the midgut of the stingless bee Partamona helleri were studied. Foragers were orally exposed to different concentrations of the mix. The concentrations leading to 10% and 50% mortality (LC10 and LC50, respectively) were estimated and used in the analysis of behaviour and morphology. The ingestion of contaminated diets (50% aqueous sucrose solution + mix) led to a reduction in food consumption by the bees when compared to the control, bees fed a non-contaminated diet (sucrose solution). Ingestion of the LC50 diet reduced locomotor activity, increased meandering, induced the degradation of the epithelium and peritrophic matrix, and also changed the number of cells positive for signalling-pathway proteins in the midgut. These results show the potential toxicological effects and environmental impacts of the mix of herbicides in beneficial insects, including a native bee.
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Review on Sublethal Effects of Environmental Contaminants in Honey Bees ( Apis mellifera), Knowledge Gaps and Future Perspectives. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18041863. [PMID: 33672936 PMCID: PMC7918799 DOI: 10.3390/ijerph18041863] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/03/2021] [Accepted: 02/10/2021] [Indexed: 12/22/2022]
Abstract
Honey bees and the pollination services they provide are fundamental for agriculture and biodiversity. Agrochemical products and other classes of contaminants, such as trace elements and polycyclic aromatic hydrocarbons, contribute to the general decline of bees' populations. For this reason, effects, and particularly sublethal effects of contaminants need to be investigated. We conducted a review of the existing literature regarding the type of effects evaluated in Apis mellifera, collecting information about regions, methodological approaches, the type of contaminants, and honey bees' life stages. Europe and North America are the regions in which A. mellifera biological responses were mostly studied and the most investigated compounds are insecticides. A. mellifera was studied more in the laboratory than in field conditions. Through the observation of the different responses examined, we found that there were several knowledge gaps that should be addressed, particularly within enzymatic and molecular responses, such as those regarding the immune system and genotoxicity. The importance of developing an integrated approach that combines responses at different levels, from molecular to organism and population, needs to be highlighted in order to evaluate the impact of anthropogenic contamination on this pollinator species.
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Honeybee colonies compensate for pesticide-induced effects on royal jelly composition and brood survival with increased brood production. Sci Rep 2021; 11:62. [PMID: 33420177 PMCID: PMC7794607 DOI: 10.1038/s41598-020-79660-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 12/07/2020] [Indexed: 12/20/2022] Open
Abstract
Sublethal doses of pesticides affect individual honeybees, but colony-level effects are less well understood and it is unclear how the two levels integrate. We studied the effect of the neonicotinoid pesticide clothianidin at field realistic concentrations on small colonies. We found that exposure to clothianidin affected worker jelly production of individual workers and created a strong dose-dependent increase in mortality of individual larvae, but strikingly the population size of capped brood remained stable. Thus, hives exhibited short-term resilience. Using a demographic matrix model, we found that the basis of resilience in dosed colonies was a substantive increase in brood initiation rate to compensate for increased brood mortality. However, computer simulation of full size colonies revealed that the increase in brood initiation led to severe reductions in colony reproduction (swarming) and long-term survival. This experiment reveals social regulatory mechanisms on colony-level that enable honeybees to partly compensate for effects on individual level.
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Miotelo L, Mendes Dos Reis AL, Malaquias JB, Malaspina O, Roat TC. Apis mellifera and Melipona scutellaris exhibit differential sensitivity to thiamethoxam. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115770. [PMID: 33045589 DOI: 10.1016/j.envpol.2020.115770] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/28/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
Apis mellifera is a pollinator insect model in pesticide risk assessment tests for bees. However, given the economic and ecological importance of stingless bees such as Melipona scutellaris in the Neotropical region, as well as the lack of studies on the effect of insecticides on these bees, toxicity tests for stingless bees should be carried out to understand whether insecticides affect both species of bees in the same manner. Thus, the present study quantified the differential sensitivity of the bees M. scutellaris and A. mellifera to the oral ingestion of the insecticide thiamethoxam by determining the mean lethal concentration (LC50), mean lethal time (LT50), and their effect on the insecticide target organ, the brain. The results showed that the stingless bee is more sensitive to the insecticide than A. mellifera, with a lower LC50 of 0.0543 ng active ingredient (a.i.)/μL for the stingless bee compared to 0.227 ng a.i./μL for A. mellifera. When exposed to a sublethal concentration, morphological and ultrastructural analyses were performed and evidenced a significant increase in spaces between nerve cells of both species. Thus, A. mellifera is not the most appropriate or unique model to determine the toxicity of insecticides to stingless bees.
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Affiliation(s)
- Lucas Miotelo
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Campus Rio Claro, São Paulo, Brazil.
| | - Ana Luiza Mendes Dos Reis
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Campus Rio Claro, São Paulo, Brazil.
| | - José Bruno Malaquias
- Department of Biostatistics, Institute of Biosciences - IBB, São Paulo State University (UNESP), Botucatu, SP, 18618-693, Brazil.
| | - Osmar Malaspina
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Campus Rio Claro, São Paulo, Brazil.
| | - Thaisa Cristina Roat
- Universidade Estadual Paulista (UNESP), Instituto de Biociências, Campus Rio Claro, São Paulo, Brazil.
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Bulson L, Becher MA, McKinley TJ, Wilfert L. Long-term effects of antibiotic treatments on honeybee colony fitness: A modelling approach. J Appl Ecol 2021; 58:70-79. [PMID: 33542585 PMCID: PMC7839786 DOI: 10.1111/1365-2664.13786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/11/2020] [Indexed: 11/30/2022]
Abstract
Gut microbiome disequilibrium is increasingly implicated in host fitness reductions, including for the economically important and disease-challenged western honey bee Apis mellifera. In laboratory experiments, the antibiotic tetracycline, which is used to prevent American Foulbrood Disease in countries including the US, elevates honey bee mortality by disturbing the microbiome. It is unclear, however, how elevated individual mortality affects colony-level fitness.We used an agent-based model (BEEHAVE) and empirical data to assess colony-level effects of antibiotic-induced worker bee mortality, by measuring colony size. We investigated the relationship between the duration that the antibiotic-induced mortality probability is imposed for and colony size.We found that when simulating antibiotic-induced mortality of worker bees from just 60 days per year, up to a permanent effect, the colony is reduced such that tetracycline treatment would not meet the European Food Safety Authority's (EFSA) honey bee protection goals. When antibiotic mortality was imposed for the hypothetical minimal exposure time, which assumes that antibiotics only impact the bee's fitness during the recommended treatment period of 15 days in both spring and autumn, the colony fitness reduction was only marginally under the EFSA's threshold. Synthesis and Applications. Modelling colony-level impacts of antibiotic treatment shows that individual honey bee worker mortality can lead to colony mortality. To assess the full impact, the persistence of antibiotic-induced mortality in honey bees must be determined experimentally, in vivo. We caution that as the domestication of new insect species increases, maintaining healthy gut microbiomes is of paramount importance to insect health and commercial productivity. The recommendation from this work is to limit prophylactic use of antibiotics and to not exceed recommended treatment strategies for domesticated insects. This is especially important for highly social insects as excess antibiotic use will likely decrease colony growth and an increase in colony mortality.
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Affiliation(s)
- Laura Bulson
- College of Life and Environment SciencesTremough CampusUniversity of ExeterPenrynUK
| | - Matthias A. Becher
- College of Life and Environment SciencesTremough CampusUniversity of ExeterPenrynUK
| | | | - Lena Wilfert
- College of Life and Environment SciencesTremough CampusUniversity of ExeterPenrynUK
- Institute of Evolutionary Ecology and Conservation GenomicsUniversity of UlmUlmGermany
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Prado A, Requier F, Crauser D, Le Conte Y, Bretagnolle V, Alaux C. Honeybee lifespan: the critical role of pre-foraging stage. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200998. [PMID: 33391795 PMCID: PMC7735337 DOI: 10.1098/rsos.200998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 10/14/2020] [Indexed: 05/25/2023]
Abstract
Assessing the various anthropogenic pressures imposed on honeybees requires characterizing the patterns and drivers of natural mortality. Using automated lifelong individual monitoring devices, we monitored worker bees in different geographical, seasonal and colony contexts creating a broad range of hive conditions. We measured their life-history traits and notably assessed whether lifespan is influenced by pre-foraging flight experience. Our results show that the age at the first flight and onset of foraging are critical factors that determine, to a large extent, lifespan. Most importantly, our results indicate that a large proportion (40%) of the bees die during pre-foraging stage, and for those surviving, the elapsed time and flight experience between the first flight and the onset of foraging is of paramount importance to maximize the number of days spent foraging. Once in the foraging stage, individuals experience a constant mortality risk of 9% and 36% per hour of foraging and per foraging day, respectively. In conclusion, the pre-foraging stage during which bees perform orientation flights is a critical driver of bee lifespan. We believe these data on the natural mortality risks in honeybee workers will help assess the impact of anthropogenic pressures on bees.
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Affiliation(s)
- Alberto Prado
- Escuela Nacional de Estudios Superiores, Unidad Juriquilla, UNAM Querétaro, Querétaro, Mexico
| | - Fabrice Requier
- Université Paris-Saclay, CNRS, IRD, UMR Évolution, Génomes, Comportement et Écologie, 91198 Gif-sur-Yvette, France
| | - Didier Crauser
- INRAE, Abeilles and Environnement, 84914 Avignon, France
| | - Yves Le Conte
- INRAE, Abeilles and Environnement, 84914 Avignon, France
| | - Vincent Bretagnolle
- Centre d'Etudes Biologiques de Chizé, CNRS and La Rochelle University, UMR 7372, 79360 Beauvoir sur Niort, France
- LTSER Zone Atelier “Plaine & Val de Sèvre”, CNRS, F-79360 Villiers-en-Bois, France
| | - Cédric Alaux
- INRAE, Abeilles and Environnement, 84914 Avignon, France
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Toselli G, Sgolastra F. Seek and you shall find: An assessment of the influence of the analytical methodologies on pesticide occurrences in honey bee-collected pollen with a systematic review. CHEMOSPHERE 2020; 258:127358. [PMID: 32563069 DOI: 10.1016/j.chemosphere.2020.127358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Honey bee mortality and colony losses have been reported worldwide. Although this phenomenon is caused by a combination of factors, agrochemicals have received special attention due to their potential effects on bees. In agricultural and urban environments bees are exposed to several compounds that may interact in unexpected ways, but information on the extent of pesticide exposure remains unclear. Several monitoring studies have been conducted to evaluate the field-realistic exposure of bees to pesticides after their release on the market. However, their outputs are difficult to compare and harmonize due to differences in the analytical methodologies and the sampling protocols (e.g. number of screened compounds and analysed samples, and detection limits (LODs)). Here, we hypothesize that the analytical methodologies used in the monitoring studies may strongly affect the pesticide occurrences in pollen underestimating the real pesticide exposure. By mean of a systematic literature review, we have collected relevant information on pesticide contaminations in the honey bee-collected pollen. Our findings showed that the pesticide occurrences were associated with the analytical methodologies and the real pesticide exposure has likely been underestimated in some monitoring studies. For four highly toxic compounds, the LOD used in these monitoring studies exceeded the doses that cause toxic effects on honey bees. We recommend that, especially for the highly toxic compounds, the LODs used in the monitoring studies should be low enough to exclude lethal or sublethal effects on bees and avoid "false negative" samples.
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Affiliation(s)
- Gioele Toselli
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Alma Mater Studiorum Università di Bologna, Italy
| | - Fabio Sgolastra
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Alma Mater Studiorum Università di Bologna, Italy.
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41
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Carnesecchi E, Toma C, Roncaglioni A, Kramer N, Benfenati E, Dorne JLCM. Integrating QSAR models predicting acute contact toxicity and mode of action profiling in honey bees (A. mellifera): Data curation using open source databases, performance testing and validation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 735:139243. [PMID: 32480144 DOI: 10.1016/j.scitotenv.2020.139243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Honey bees (Apis mellifera) provide key ecosystem services as pollinators bridging agriculture, the food chain and ecological communities, thereby ensuring food production and security. Ecological risk assessment of single Plant Protection Products (PPPs) requires an understanding of the exposure and toxicity. In silico tools such as QSAR models can play a major role for the prediction of structural, physico-chemical and pharmacokinetic properties of chemicals as well as toxicity of single and multiple chemicals. Here, the first integrative honey bee QSAR model has been developed for PPPs using EFSA's OpenFoodTox, US-EPA ECOTOX and Pesticide Properties DataBase i) to predict acute contact toxicity (LD50) and ii) to profile the Mode of Action (MoA) of pesticides active substances. Three different classification-based and four regression-based models were developed and tested for their performance, thus identifying two models providing the most reliable predictions based on k-NN algorithm. The two-category QSAR model (toxic/non-toxic; n = 411) was validated using sensitivity (=0.93), specificity (=0.85), balanced accuracy (=0.90), and Matthews correlation coefficient (MCC = 0.78) as statistical parameters. The regression-based model (n = 113) was validated for its reliability and robustness (R2 = 0.74; MAE = 0.52). Current study proposes the MoA profiling for 113 pesticides active substances and the first harmonised MoA classification scheme for acute contact toxicity in honey bees, including LD50s data points from three different databases. The classification allows to further define MoAs and the target site of PPPs active substances, thus enabling regulators and scientists to refine chemical grouping and toxicity extrapolations for single chemicals and component-based mixture risk assessment of multiple chemicals. Relevant future perspectives are briefly addressed to integrate MoA, adverse outcome pathways (AOPs) and toxicokinetic information for the refinement of single-chemical/combined toxicity predictions and risk estimates at different levels of biological organization in the bee health context.
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Affiliation(s)
- Edoardo Carnesecchi
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508 TD Utrecht, the Netherlands; Laboratory of Chemistry and Environmental Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy.
| | - Cosimo Toma
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508 TD Utrecht, the Netherlands; Laboratory of Chemistry and Environmental Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Alessandra Roncaglioni
- Laboratory of Chemistry and Environmental Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Nynke Kramer
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508 TD Utrecht, the Netherlands
| | - Emilio Benfenati
- Laboratory of Chemistry and Environmental Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Jean Lou C M Dorne
- European Food Safety Authority (EFSA), Scientific Committee and Emerging Risks Unit, Via Carlo Magno 1A, 43126 Parma, Italy
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42
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Szczurek A, Maciejewska M, Bąk B, Wilk J, Wilde J, Siuda M. Detecting varroosis using a gas sensor system as a way to face the environmental threat. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137866. [PMID: 32197164 DOI: 10.1016/j.scitotenv.2020.137866] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/21/2020] [Accepted: 03/10/2020] [Indexed: 06/10/2023]
Abstract
Colony Collapse Disorder (CCD) is an environmental threat on a global scale due to the irreplaceable role of bees in crop pollination. Varroa destructor (V.d.), a parasite that attacks honeybee colonies, is one of the primary causes of honey bee population decline and the most serious threat to the beekeeping sector. This work demonstrates the possibility of quantitatively determining bee colony infestation by V.d. using gas sensing. The results are based on analysing the experimental data acquired for eighteen bee colonies in field conditions. Their infestation rate was in the 0 to 24.76% range. The experimental data consisted of measurements of beehive air with a semiconductor gas sensor array and the results of bee colony V.d. infestation assessment using a flotation method. The two kinds of data were collected in parallel. Partial Least Square regression was applied to identify the relationship between the highly multivariate measurement data provided by the gas sensor array and the V.d. infestation rate. The quality of the developed quantitative models was very high, as demonstrated by the coefficient of determination exceeding R2 = 0.99. Moreover, the prediction error was <0.6% for V.d. infestation rate predictions based on the measurement data that was unknown to the model. The presented work has considerable novelty. To our knowledge, the ability to determine the V.d. infestation rate of bee colony quantitatively based on beehive air measurements using a semiconductor gas sensor array has not been previously demonstrated.
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Affiliation(s)
- Andrzej Szczurek
- Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Monika Maciejewska
- Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Beata Bąk
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Jakub Wilk
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Jerzy Wilde
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Maciej Siuda
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
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43
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Crenna E, Jolliet O, Collina E, Sala S, Fantke P. Characterizing honey bee exposure and effects from pesticides for chemical prioritization and life cycle assessment. ENVIRONMENT INTERNATIONAL 2020; 138:105642. [PMID: 32179322 DOI: 10.1016/j.envint.2020.105642] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 03/03/2020] [Accepted: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Agricultural pesticides are key contributors to pollinator decline worldwide. However, methods for quantifying impacts associated with pollinator exposure to pesticides are currently missing in comparative risk screening, chemical substitution and prioritization, and life cycle impact assessment methods. To address this gap, we developed a method for quantifying pesticide field exposure and ecotoxicity effects of honey bees as most economically important pollinator species worldwide. We defined bee intake and dermal contact fractions representing respectively oral and dermal exposure per unit mass applied, and tested our model on two pesticides applied to oilseed rape. Our results show that exposure varies between types of forager bees, with highest dermal contact fraction of 59 ppm in nectar foragers for lambda-cyhalothrin (insecticide), and highest oral intake fractions of 32 and 190 ppm in nectar foragers for boscalid (fungicide) and lambda-cyhalothrin, respectively. Hive oral exposure is up to 115 times higher than forager oral exposure. Combining exposure with effect estimates yields impacts, which are three orders of magnitude higher for the insecticide. Overall, nectar foragers are the most affected forager type for both pesticides, dominated by oral exposure. Our framework constitutes an important step toward integrating pollinator impacts in chemical substitution and life cycle impact assessment, and should be expanded to cover all relevant pesticide-crop combinations.
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Affiliation(s)
- Eleonora Crenna
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Olivier Jolliet
- Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, USA
| | - Elena Collina
- Department of Earth and Environmental Sciences, University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Serenella Sala
- European Commission, Joint Research Centre, Via Enrico Fermi 2749, 21027 Ispra (VA), Italy
| | - Peter Fantke
- Quantitative Sustainability Assessment, Department of Technology, Management and Economics, Technical University of Denmark, Produktionstorvet 424, 2800 Kgs. Lyngby, Denmark.
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44
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Barbet-Massin M, Salles JM, Courchamp F. The economic cost of control of the invasive yellow-legged Asian hornet. NEOBIOTA 2020. [DOI: 10.3897/neobiota.55.38550] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Since its accidental introduction in 2003 in France, the yellow-legged Asian hornet Vespa velutina nigrithorax is rapidly spreading through France and Europe. Economic assessments regarding the costs of invasive species often reveal important costs from required control measures or damages. Despite the rapid invasion of the Asian yellow-legged hornet in Europe and potential damage to apiculture and pollination services, the costs of its invasion have not been evaluated yet. Here we aimed at studying the costs arising from the Asian yellow-legged hornet invasion by providing the first estimate of the control cost. Today, the invasion of the Asian yellow-legged hornet is mostly controlled by nest destruction. We estimated that nest destruction cost €23 million between 2006 and 2015 in France. The yearly cost is increasing as the species keeps spreading and could reach €11.9 million in France, €9.0 million in Italy and €8.6 million in the United Kingdom if the species fills its current climatically suitable distribution. Although more work will be needed to estimate the cost of the Asian yellow-legged hornet on apiculture and pollination services, they likely exceed the current costs of control with nest destruction. It could thus be worth increasing control efforts by aiming at destroying a higher percentage of nests.
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45
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Wang Y, Zhu YC, Li W. Comparative examination on synergistic toxicities of chlorpyrifos, acephate, or tetraconazole mixed with pyrethroid insecticides to honey bees (Apis mellifera L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:6971-6980. [PMID: 31879892 DOI: 10.1007/s11356-019-07214-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
Potential synergistic toxicity of pesticide mixtures has increasingly become a concern to the health of crop pollinators. The toxicities of individual and mixture of chlorpyrifos (CHL), acephate (ACE), or tetraconazole (TET) with nine pyrethroid insecticides to honey bees (Apis mellifera L.) were evaluated to reveal any aggregated interaction between pesticides. Results from feeding toxicity tests of individual pesticides indicated that organophosphate insecticides CHL and ACE had higher toxicities to honey bees compared to nine pyrethroids. Moreover, different pyrethroids exhibited considerable variation in toxicity with LC50 values ranging from 10.05 (8.60-11.69) to 1125 (922.4-1442) mg a.i. L-1 after exposure for 7 days. Among the 12 examined pesticides, a relatively low toxicity to A. mellifera was detected from the fungicide TET. All the binary mixtures of ACE or TET in combination with pyrethroids exhibited synergistic effects. However, TET in combination with pyrethroids showed greater synergistic toxicity to A. mellifera than ACE in combination with pyrethroids. Approximately 50% binary mixtures of CHL in combination with pyrethroids also showed synergistic responses in honey bees. In particular, CHL, ACE, or TET in combination with either lambda-cyhalothrin (LCY) or bifenthrin (BIF) showed the strongest synergy in A. mellifera, followed by CHL, ACE, or TET in combination with either zeta-cypermethrin (ZCY) or cypermethrin (CYP). The findings indicated that the co-exposure of various pesticides in natural settings might lead to severe injury to crop pollinators. Therefore, pesticide mixtures should be applied carefully in order to minimize negative effects on honey bees while maintaining effective management against crop pests.
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Affiliation(s)
- Yanhua Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products/Key Laboratory for Pesticide Residue Detection of Ministry of Agriculture, Institute of Quality and Standard for Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, Zhejiang, People's Republic of China
- Southern Insect Management Research Unit, United States Department of Agriculture, Agricultural Research Service (USDA-ARS)USDA-ARS-JWDSRC, 141 Experiment Station Road /PO Box 346, Stoneville, MS, 38776, USA
| | - Yu Cheng Zhu
- Southern Insect Management Research Unit, United States Department of Agriculture, Agricultural Research Service (USDA-ARS)USDA-ARS-JWDSRC, 141 Experiment Station Road /PO Box 346, Stoneville, MS, 38776, USA.
| | - Wenhong Li
- Guizhou Institute of Plant Protection, Guizhou Academy of Agricultural Sciences, Guiyang, 550006, Guizhou, People's Republic of China
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46
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Carnesecchi E, Toropov AA, Toropova AP, Kramer N, Svendsen C, Dorne JL, Benfenati E. Predicting acute contact toxicity of organic binary mixtures in honey bees (A. mellifera) through innovative QSAR models. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 704:135302. [PMID: 31810690 DOI: 10.1016/j.scitotenv.2019.135302] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
Pollinators such as honey bees are of considerable importance, because of the crucial pollination services they provide for food crops and wild plants. Since bees are exposed to a wide range of multiple chemicals "mixtures" both of anthropogenic (e.g. plant protection products) and natural origin (e.g. plant toxins), understanding their combined toxicity is critical. Although honey bees are employed worldwide as surrogate species for Apis and non-Apis bees in toxicity tests, it is practically unfeasible to perform in vivo tests for all mixtures of chemicals. Therefore, Quantitative Structure-Activity Relationships (QSAR) models can be developed using available data and can provide useful tools to predict such combined toxicity. Here, three different QSAR models within the CORAL software have been calibrated and validated for honey bees (A. mellifera) to predict the acute contact mixtures potency (LD50-mix), in two regression based-models, and the nature of combined toxicity (synergism / non-synergism) in a classification-based model. Experimental data on binary mixtures (n = 123) (LD50-mix) including dose response data (n = 97) and corresponding Toxic Unit values were retrieved from EFSA databases. The models were built using the principle of extraction of attributes from SMILES (or quasi-SMILES) while calculating so-called correlation weights for these attributes using Monte Carlo techniques. The two regression models were validated for their reliability and robustness (R2 = 0.89, CCC = 0.92, Q2 = 0.81; R2 = 0.87, CCC = 0.89, Q2 = 0.75). The classification model was validated using sensitivity (=0.86), specificity (=1), accuracy (=0.96), and Matthews correlation coefficient (MCC = 0.90) as qualitative statistical validation parameters. Results indicate that these QSAR models successfully predict acute contact toxicity of binary mixtures in honey bees and can support prioritisation of multiple chemicals of concerns. Data gaps and further development of QSAR models for honey bees are highlighted particularly for chronic and sub-lethal effects.
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Affiliation(s)
- Edoardo Carnesecchi
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via la Masa 19, 20156 Milan, Italy; Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508 TD Utrecht, The Netherlands.
| | - Andrey A Toropov
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via la Masa 19, 20156 Milan, Italy
| | - Alla P Toropova
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via la Masa 19, 20156 Milan, Italy
| | - Nynke Kramer
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, PO Box 80177, 3508 TD Utrecht, The Netherlands
| | - Claus Svendsen
- Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford, Oxfordshire OX10 8BB, UK
| | - Jean Lou Dorne
- European Food Safety Authority (EFSA), Scientific Committee and Emerging Risks Unit, Via Carlo Magno 1A, 43126 Parma, Italy
| | - Emilio Benfenati
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via la Masa 19, 20156 Milan, Italy
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47
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Camp AA, Batres M, Williams W, Lehmann DM. Impact of Diflubenzuron on Bombus impatiens (Hymenoptera: Apidae) Microcolony Development. ENVIRONMENTAL ENTOMOLOGY 2020; 49:203-210. [PMID: 31858127 PMCID: PMC7400686 DOI: 10.1093/ee/nvz150] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Indexed: 05/07/2023]
Abstract
Reliance on the honey bee as a surrogate organism for risk assessment performed on other bees is widely challenged due to differences in phenology, life history, and sensitivity to pesticides between bee species. Consequently, there is a need to develop validated methods for assessing toxicity in non-Apis bees including bumble bees. The usefulness of small-scale, queenless colonies, termed microcolonies, has not been fully investigated for hazard assessment. Using the insect growth regulator diflubenzuron as a reference toxicant, we monitored microcolony development from egg laying to drone emergence using the Eastern bumble bee Bombus impatiens (C.), a non-Apis species native to North America. Microcolonies were monitored following dietary exposure to diflubenzuron (nominal concentrations: 0.1, 1, 10, 100, and 1,000 µg/liter). Microcolony syrup and pollen consumption was significantly reduced by diflubenzuron exposure. Pupal cell production was also significantly decreased at the highest diflubenzuron concentration assessed. Ultimately, diflubenzuron inhibited drone production in a concentration-dependent manner and a 42-d 50% inhibitory concentration (IC50) was determined. None of the dietary concentrations of diflubenzuron tested affected adult worker survival, or average drone weight. These data strengthen the foundation for use of this methodology, and provide valuable information for B. impatiens; however, more work is required to better understand the utility of the bumble bee microcolony model for pesticide hazard assessment.
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Affiliation(s)
- A. A. Camp
- ORISE Researcher, Oak Ridge Associated Universities, Research Triangle Park, NC 27711, USA
| | - M.A. Batres
- Oak Ridge Associated Universities, Research Triangle Park, NC 27711, USA
| | - W.C. Williams
- Center for Public Health and Environmental Assessment (CPHEA), US - Environmental Protection Agency, Research Triangle Park, NC, 27711, USA
| | - D. M. Lehmann
- Center for Public Health and Environmental Assessment (CPHEA), US - Environmental Protection Agency, Research Triangle Park, NC, 27711, USA
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48
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Tomé HVV, Schmehl DR, Wedde AE, Godoy RSM, Ravaiano SV, Guedes RNC, Martins GF, Ellis JD. Frequently encountered pesticides can cause multiple disorders in developing worker honey bees. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 256:113420. [PMID: 31813703 DOI: 10.1016/j.envpol.2019.113420] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/11/2019] [Accepted: 10/14/2019] [Indexed: 05/21/2023]
Abstract
Pesticide exposure is regarded as a contributing factor to the high gross loss rates of managed colonies of Apis mellifera. Pesticides enter the hive through contaminated nectar and pollen carried by returning forager honey bees or placed in the hive by beekeepers when managing hive pests. We used an in vitro rearing method to characterize the effects of seven pesticides on developing brood subjected dietary exposure at worse-case environmental concentrations detected in wax and pollen. The pesticides tested included acaricides (amitraz, coumaphos, fluvalinate), insecticides (chlorpyrifos, imidacloprid), one fungicide (chlorothalonil), and one herbicide (glyphosate). The larvae were exposed chronically for six days of mimicking exposure during the entire larval feeding period, which is the worst possible scenario of larval exposure. Survival, duration of immature development, the weight of newly emerged adult, morphologies of the antenna and the hypopharyngeal gland, and gene expression were recorded. Survival of bees exposed to amitraz, coumaphos, fluvalinate, chlorpyrifos, and chlorothalonil was the most sensitive endpoint despite observed changes in many developmental and physiological parameters across the seven pesticides. Our findings suggest that pesticide exposure during larvae development may affect the survival and health of immature honey bees, thus contributing to overall colony stress or loss. Additionally, pesticide exposure altered gene expression of detoxification enzymes. However, the tested exposure scenario is unlikely to be representative of real-world conditions but emphasizes the importance of proper hive management to minimize pesticide contamination of the hive environment or simulates a future scenario of increased contamination.
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Affiliation(s)
- Hudson V V Tomé
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil; Entomology and Nematology Department, University of Florida, Steinmetz Hall, 970 Natural Area Drive, Gainesville, FL, 32611, USA.
| | - Daniel R Schmehl
- Entomology and Nematology Department, University of Florida, Steinmetz Hall, 970 Natural Area Drive, Gainesville, FL, 32611, USA
| | - Ashlyn E Wedde
- Entomology and Nematology Department, University of Florida, Steinmetz Hall, 970 Natural Area Drive, Gainesville, FL, 32611, USA
| | - Raquel S M Godoy
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Samira V Ravaiano
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Raul N C Guedes
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Gustavo F Martins
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - James D Ellis
- Entomology and Nematology Department, University of Florida, Steinmetz Hall, 970 Natural Area Drive, Gainesville, FL, 32611, USA
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49
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Alonso-Prados E, Muñoz I, De la Rúa P, Serrano J, Fernández-Alba AR, García-Valcárcel AI, Hernando MD, Alonso Á, Alonso-Prados JL, Bartolomé C, Maside X, Barrios L, Martín-Hernández R, Higes M. The toxic unit approach as a risk indicator in honey bees surveillance programmes: A case of study in Apis mellifera iberiensis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 698:134208. [PMID: 31505351 DOI: 10.1016/j.scitotenv.2019.134208] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 06/10/2023]
Abstract
The influence of genetic diversity and exposure to xenobiotics on the prevalence of pathogens was studied within the context of a voluntary epidemiological study in Spanish apiaries of Apis mellifera iberiensis, carried out during the spring season of years 2014 and 2015. As such, the evolutionary lineages of the honey bee colonies were identified, a multiresidue analysis of xenobiotics was carried out in beebread and worker bee samples, and the Toxic Unit (TUm) was estimated for each sampled apiary. The relationship between lineages and the most prevalent pathogens (Nosema ceranae, Varroa destructor, trypanosomatids, Black Queen Cell Virus; and Deformed Wing Virus) was analysed with contingency tables, and the possible relationships between TUm and the prevalence of these pathogens were studied by using a factor analysis. The statistical analysis supported the associations between V. destructor and Deformed Wing Virus (DWV), and between N. ceranae and Black Queen Cell Virus (BQCV), but the association between these pathogens and trypanosomatids was not observed. TUm values varied between 5.5 × 10-6 and 3.65 × 10-1. When TUm < 3.35 × 10-4, it was mainly determined by coumaphos, tau-fluvalinate and/or chlorfenvinphos. At higher values, other insecticides also contributed to TUm, although a clear predominance was not seen up to TUm ≥ 1.83 × 10-2, when it was mainly defined by acrinathrin, spinosad and/or imidacloprid. The possible cumulative effect from the joint action of xenobiotics was >10% in the 63% of the cases. The prevalence of pathogens did not appear to be influenced by the distribution of evolutionary lineages and, while the prevalence of V. destructor was not found to be determined by TUm, there was a trend towards an increasing prevalence of N. ceranae when TUm ≥ 23 10-4. This study is an example of using TUm approach beyond the field of the ecotoxicology.
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Affiliation(s)
- Elena Alonso-Prados
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, INIA, 28040 Madrid, Spain.
| | - Irene Muñoz
- Área de Biología Animal, Dpto. Zoología y Antropología Física, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain
| | - Pilar De la Rúa
- Área de Biología Animal, Dpto. Zoología y Antropología Física, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain
| | - José Serrano
- Área de Biología Animal, Dpto. Zoología y Antropología Física, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain
| | - Amadeo R Fernández-Alba
- Agrifood Campus of International Excellence (ceiA3), Department of Chemistry and Physics, University of Almería, European Union Reference Laboratory for Pesticide Residues in Fruit & Vegetables, 04120 Almería, Spain
| | | | - María Dolores Hernando
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, INIA, 28040 Madrid, Spain
| | - Ángeles Alonso
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, INIA, 28040 Madrid, Spain
| | - José L Alonso-Prados
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, INIA, 28040 Madrid, Spain
| | - Carolina Bartolomé
- Grupo de Medicina Xenómica, CIMUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain; Grupo de Xenómica Comparada de Parásitos Humanos, IDIS, Santiago de Compostela, Galicia, Spain
| | - Xulio Maside
- Grupo de Medicina Xenómica, CIMUS, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain; Grupo de Xenómica Comparada de Parásitos Humanos, IDIS, Santiago de Compostela, Galicia, Spain; Departamento de Ciencias Forenses, Anatomía Patolóxica, Xinecoloxía e Obstetricia, e Pediatría, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - Laura Barrios
- Departamento de Estadística, CTI. Consejo Superior de Investigaciones Científicas (CSIC), 28006 Madrid, Spain
| | - Raquel Martín-Hernández
- Instituto de Recursos Humanos para la Ciencia y la Tecnología (INCRECYT-FEDER), Fundación Parque Científico y Tecnológico de Castilla - La Mancha, Spain; Laboratorio de Patología Apícola, Centro de Investigación Apícola y Agroambiental (CIAPA), Instituto Regional de Investigación y Desarrollo Agroalimentario y Forestal (IRIAF), Consejería de Agricultura de la Junta de Comunidades de Castilla-La Mancha, Camino de San Martín s/n, 19180 Marchamalo, Guadalajara, Spain
| | - Mariano Higes
- Instituto de Recursos Humanos para la Ciencia y la Tecnología (INCRECYT-FEDER), Fundación Parque Científico y Tecnológico de Castilla - La Mancha, Spain
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Control of Varroa destructor Mite Infestations at Experimental Apiaries Situated in Croatia. DIVERSITY 2019. [DOI: 10.3390/d12010012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Experimental varroacidal treatments of honey bee colonies were conducted on five apiaries (EA1–EA5) situated at five different geographical and climatic locations across Croatia. The aim of this study was to assess the comparative efficacy of CheckMite+ (Bayer, Germany), Apiguard (Vita Europe Ltd.; England), Bayvarol, C, (Bayer, Germany), Thymovar, (Andrma BioVet GmbH, Germany), and ApiLife Var, (Chemicals Laif SPA; Vigonza, Italy) for controlling the honey bee obligatory parasitic mite Varroa destructor in different conditions in the field during summer treatment. The relative varroa mite mortality after treatments with applied veterinary medicinal products were EA1 (59.24%), EA2 (47.31%), EA3 (36.75%), EA4 (48.33%), and EA5 (16.78%). Comparing the relative efficacy of applied varroacides, the best effect was achieved with CheckMite+, and the lowest for honey bee colonies treated with Apiguard (statistically significant difference was confirmed; p < 0.05). Considering the lower efficacy of thymol-based veterinary medicinal products observed on all EA in these study conditions, it may be concluded that their use is limited under different treatment regimes. Despite unfavourable weather and environmental conditions, with exceptions of EA5/EA5′ and EA1, the relative varroacidal efficacy of authorized veterinary medicinal product treatments in moderately infested honey bee colonies ensured normal overwintering and colony development during next spring.
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