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Gonzalez FN, Raticelli F, Ferrufino C, Fagúndez G, Rodriguez G, Miño S, Dus Santos MJ. Detection and characterization of Deformed Wing Virus (DWV) in apiaries with stationary and migratory management in the province of Entre Ríos, Argentina. Sci Rep 2024; 14:16747. [PMID: 39033233 PMCID: PMC11271310 DOI: 10.1038/s41598-024-67264-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 07/09/2024] [Indexed: 07/23/2024] Open
Abstract
In Argentina, migratory activity in search of floral diversity has become a common approach to maximizing honey production. The Entre Ríos province possesses a floral diversity that allows beekeepers to perform migratory or stationary management. Beyond the impact caused by transhumance, migratory colonies in this province start and end the season in monoculture areas. To study the effect of these practices on viral infection, we assayed for the presence, abundance and genetic characterization of the Deformed Wing Virus (DWV) in honey bees from apiaries with both types of management. In migratory apiaries, DWV was detectable in 86.2% of the colonies at the beginning of the season (September 2018), and 66% at the end of the season (March 2019). On the other hand, DWV was detected in 44.11% and 53.12% of stationary samples, at the beginning and the end of the season, respectively. Sequence analysis from migratory and stationary colonies revealed that all samples belonged to DWV-A type. The highest viral loads were detected in migratory samples collected in September. Higher DWV presence and abundance were associated with migratory management and the sampling time. Based on our findings we propose that the benefit of migration to wild flowering areas can be dissipated when the bee colonies end the season with monoculture.
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Affiliation(s)
- F N Gonzalez
- Instituto de Virología e Innovaciones Tecnológicas (IVIT), CICVyA, Instituto Nacional de Tecnología Agropecuaria. De las Cabañas y De los Reseros s/n, Hurlingham, Buenos Aires, Argentina
| | - F Raticelli
- Laboratorio de Especialidades Productivas de Maciá (LEPMA), Ecología y Medio Ambiente, Secretaría de Producción, Municipio de Gobernador Maciá, Entre Ríos, Argentina
| | - C Ferrufino
- Instituto de Virología e Innovaciones Tecnológicas (IVIT), CICVyA, Instituto Nacional de Tecnología Agropecuaria. De las Cabañas y De los Reseros s/n, Hurlingham, Buenos Aires, Argentina
| | - G Fagúndez
- Laboratorio de Actuopalinología, CICYTTP (CONICET - UADER), Diamante, Entre Ríos, Argentina
| | - G Rodriguez
- EEA Hilario Ascasubi, Instituto Nacional de Tecnología Agropecuaria, Ruta Nacional 3, Km 794, Hilario Ascasubi, Buenos Aires, Argentina
| | - S Miño
- EEA Cerro Azul, Instituto Nacional de Tecnología Agropecuaria, Ruta Nacional 14, Km 836, Cerro Azul, Misiones, Argentina
| | - M J Dus Santos
- Instituto de Virología e Innovaciones Tecnológicas (IVIT), CICVyA, Instituto Nacional de Tecnología Agropecuaria. De las Cabañas y De los Reseros s/n, Hurlingham, Buenos Aires, Argentina.
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2
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Oh J, Lee S, Kwon W, Joharchi O, Kim S, Lee S. Molecular phylogeny reveals Varroa mites are not a separate family but a subfamily of Laelapidae. Sci Rep 2024; 14:13994. [PMID: 38886408 PMCID: PMC11183080 DOI: 10.1038/s41598-024-63991-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 06/04/2024] [Indexed: 06/20/2024] Open
Abstract
Varroa mites, notorious for parasitizing honeybees, are generally classified as Varroidae. Their extremely modified morphologies and behaviors have led to debates regarding their phylogenetic position and classification as an independent family. In this study, two different datasets were employed to reconstruct the phylogenies of Varroa mites and related Laelapidae species: (1) 9257 bp from the whole 13 mitochondrial protein-coding genes of 24 taxa, (2) 3158 bp from 113 taxa using Sanger sequencing of four nuclear loci. Both mitochondrial and nuclear analyses consistently place Varroa mites within the Laelapidae. Here we propose to place Varroa mites in the subfamily Varroinae stat. nov., which represents a highly morphologically adapted group within the Laelapidae. Ancestral state reconstructions reveal that bee-associated lifestyles evolved independently at least three times within Laelapidae, with most phoretic traits originating from free-living ancestors. Our revised classification and evolutionary analyses will provide new insight into understanding the Varroa mites.
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Affiliation(s)
- Jaeseok Oh
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
| | - Seunghyun Lee
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Department of Life Sciences, Natural History Museum, London, UK
| | - Woochan Kwon
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul, South Korea
| | - Omid Joharchi
- Anatis Bioprotection Inc., Saint-Jacques-de-Mineur, Québec, J0J 1Z0, Canada
- All-Russian Institute of Plant Protections, St. Petersburg, Russia
- Agriculture Science and Technology Institute, Andong National University, Andong, Republic of Korea
| | - Sora Kim
- Lab. of Insect Phylogenetics and Evolution, Department of Plant Protection & Quarantine, Jeonbuk National University, Jeonju, 54896, Republic of Korea
- Department of Agricultural Convergence Technology, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Seunghwan Lee
- Insect Biosystematics Laboratory, Department of Agricultural Biotechnology, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.
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García-Vicente EJ, Benito-Murcia M, Martín M, Rey-Casero I, Pérez A, González M, Alonso JM, Risco D. Evaluation of the Potential Effect of Postbiotics Obtained from Honey Bees against Varroa destructor and Their Combination with Other Organic Products. INSECTS 2024; 15:67. [PMID: 38249073 PMCID: PMC10816111 DOI: 10.3390/insects15010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/12/2024] [Accepted: 01/13/2024] [Indexed: 01/23/2024]
Abstract
The Varroa destructor mite infests Apis mellifera colonies and causes significant harm. Traditional treatments have become less effective because of mite resistance development and can also generate residues inside beehives. This study aimed to gauge the efficacy of a beehive-derived postbiotic in reducing V. destructor viability and to explore its synergies with organic compounds. Four lactic acid bacteria (LAB) species, Leuconostoc mesenteroides, Lactobacillus helsingborgensis, Bacillus velezensis, and Apilactobacillus kunkeei, were isolated and tested in a postbiotic form (preparations of inanimate microorganisms and/or their components) via bioassays. L. mesenteroides, L. helsingborgensis, and B. velezensis notably reduced the mite viability compared to the control, and they were further tested together as a single postbiotic product (POS). Further bioassays were performed to assess the impact of the POS and its combinations with oxalic acid and oregano essential oil. The simple products and combinations (POS/Oregano, POS/Oxalic, Oregano/Oxalic, and POS/Oregano/Oxalic) decreased the mite viability. The most effective were the oxalic acid combinations (POS/Oregano/Oxalic, Oxalic/Oregano, POS/Oxalic), showing significant improvements compared to the individual products. These findings highlight the potential of combining organic products as a vital strategy for controlling V. destructor infection. This study suggests that these combinations could serve as essential tools for combating the impact of mites on bee colonies.
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Affiliation(s)
- Eduardo José García-Vicente
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
- Department of Animal Medicine, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10001 Cáceres, Spain;
| | - María Benito-Murcia
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
| | - María Martín
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
| | - Ismael Rey-Casero
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
| | - Ana Pérez
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
| | - María González
- Neobéitar S.L., Av. de Alemania, 6 1ºB, 10003 Cáceres, Spain; (M.B.-M.); (M.M.); (I.R.-C.); (A.P.); (M.G.)
| | - Juan Manuel Alonso
- Department of Animal Health, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10001 Cáceres, Spain;
| | - David Risco
- Department of Animal Medicine, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10001 Cáceres, Spain;
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4
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Taylor LN, Dolezal AG. The effect of Israeli acute paralysis virus infection on honey bee brood care behavior. Sci Rep 2024; 14:991. [PMID: 38200122 PMCID: PMC10781695 DOI: 10.1038/s41598-023-50585-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
To protect themselves from communicable diseases, social insects utilize social immunity-behavioral, physiological, and organizational means to combat disease transmission and severity. Within a honey bee colony, larvae are visited thousands of times by nurse bees, representing a prime environment for pathogen transmission. We investigated a potential social immune response to Israeli acute paralysis virus (IAPV) infection in brood care, testing the hypotheses that bees will respond with behaviors that result in reduced brood care, or that infection results in elevated brood care as a virus-driven mechanism to increase transmission. We tested for group-level effects by comparing three different social environments in which 0%, 50%, or 100% of nurse bees were experimentally infected with IAPV. We investigated individual-level effects by comparing exposed bees to unexposed bees within the mixed-exposure treatment group. We found no evidence for a social immune response at the group level; however, individually, exposed bees interacted with the larva more frequently than their unexposed nestmates. While this could increase virus transmission from adults to larvae, it could also represent a hygienic response to increase grooming when an infection is detected. Together, our findings underline the complexity of disease dynamics in complex social animal systems.
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Affiliation(s)
- Lincoln N Taylor
- Department of Entomology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA.
| | - Adam G Dolezal
- Department of Entomology, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
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Wu T, Gao J, Choi YS, Kim DW, Han B, Yang S, Lu Y, Kang Y, Du H, Diao Q, Dai P. Interaction of chlorothalonil and Varroa destructor on immature honey bees rearing in vitro. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 904:166302. [PMID: 37595923 DOI: 10.1016/j.scitotenv.2023.166302] [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: 06/19/2023] [Revised: 08/02/2023] [Accepted: 08/12/2023] [Indexed: 08/20/2023]
Abstract
Under realistic environmental conditions, bees are often exposed to multiple stressors, especially Varroa destructor and pesticides. In this study, the effects of exposure to NOAEC of chlorothalonil during the larval stage, in the presence or absence of V. destructor, was examined in terms of survival, morphological and transcriptional changes. The interaction between chlorothalonil and V. destructor on the survival of honey bee was additive. V. destructor are the dominant factor in the interaction for survival and transcriptome alternation. The downregulation of the genes related to tissue growth and caste differentiation may directly link to the mortality of honey bees. Either chlorothalonil or V. destructor induces the irregular morphology of trophocytes and oenocytes in the fat body. In addition to irregular shapes, oenocytes in V. destructor alone and double-stressor treatment group showed altered nuclei and vacuoles in the cytoplasm. The interaction of V. destructor and chlorothalonil at the larval stage have potential adverse effects on the subsequent adult bees, with up-regulation of genes involved in lipid metabolism and detoxification/defense in fat body tissue. Our findings provide a comprehensive understanding of combinatorial effects between biotic and abiotic stressors on one of the most important pollinators, honey bees.
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Affiliation(s)
- Tong Wu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jing Gao
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Yong Soo Choi
- Department of Agricultural Biology, National Institute of Agricultural Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Dong Won Kim
- Department of Agricultural Biology, National Institute of Agricultural Science, Rural Development Administration, Wanju-gun 55365, Republic of Korea
| | - Bo Han
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Sa Yang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ying Lu
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing 102206, China
| | - Yuxin Kang
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hanchao Du
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qingyun Diao
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Pingli Dai
- State Key Laboratory of Resource Insects, Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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Meikle WG, Corby-Harris V, Ricigliano V, Snyder L, Weiss M. Cold storage as part of a Varroa management strategy: effects on honey bee colony performance, mite levels and stress biomarkers. Sci Rep 2023; 13:11842. [PMID: 37481663 PMCID: PMC10363162 DOI: 10.1038/s41598-023-39095-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/20/2023] [Indexed: 07/24/2023] Open
Abstract
Placing honey bee colonies in cold storage has been proposed as a way to induce a pause in brood production as part of a Varroa mite treatment plan. Here, we exposed colonies to combinations of with or without an October cold storage period and with or without a subsequent miticide application. We then measured the effects of those treatments on colony-level variables (i.e. colony size, Varroa infestation level, survivorship and hive weight and temperature) and pooled individual-level variables that are associated with nutritional and stress responses. Colonies were assessed before and after cold storage, and again post winter, for a total duration of about 5 months, and the experiment was repeated. Brood levels were significantly lower after cold storage, and hive temperatures indicated that most or all brood had emerged after about two weeks in cold storage. However, Varroa levels at the end of the experiments in February were not significantly different among treatment groups. Colonies kept outside (not subjected to cold storage) and treated with a miticide had higher survivorship on average than any other treatment group, but no other group comparisons were significant, and long-term impact of cold storage on adult bee populations and on colony thermoregulation was low. The bee forage environment was also very different between the 2 years of the study, as rainfall and bee forage availability were much higher the second year. Colonies were over 2.5 times larger on average the second year compared to the first, both in terms of adult bee mass and brood area, and expression levels of nutrition and stress response genes were also significantly higher the second year. The results indicate that limited cold storage would likely have little long-term impact on most colony and individual measures of health, but for such a strategy to succeed levels of stressors, such as Varroa, may also need to be low.
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Affiliation(s)
- William G Meikle
- Carl Hayden Bee Research Center, USDA-ARS, Tucson, AZ, 85719, USA.
| | | | - Vincent Ricigliano
- Carl Hayden Bee Research Center, USDA-ARS, Tucson, AZ, 85719, USA
- Honey Bee Breeding, Genetics, and Physiology Research, USDA-ARS, Baton Rouge, LA, 70820, USA
| | - Lucy Snyder
- Carl Hayden Bee Research Center, USDA-ARS, Tucson, AZ, 85719, USA
| | - Milagra Weiss
- Carl Hayden Bee Research Center, USDA-ARS, Tucson, AZ, 85719, USA
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García-Vicente EJ, Martín M, Rey-Casero I, Pérez A, Martínez R, Bravo M, Alonso JM, Risco D. Effect of feed supplementation with probiotics and postbiotics on strength and health status of honey bee (Apis mellifera) hives during late spring. Res Vet Sci 2023; 159:237-243. [PMID: 37178627 DOI: 10.1016/j.rvsc.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023]
Abstract
Currently, beekeeping faces many risks, such as deteriorating health of honeybees in hives, which results in high mortality rates, mainly during winter. An important consequence is the emergence/re-emergence of communicable diseases such as varroosis or nosemosis. These diseases jeopardize the continuity of the sector because of the absence of effective treatments and harmful residues that they can be retained on wax or honey. This study aimed to evaluate how feed supplementation with probiotic and postbiotic products derived from lactic acid bacteria affected the strength, dynamic population, and sanitary parameters of honey bees. Three groups of 30 hives were established and fed with feed supplemented with control, probiotic, or postbiotic products, with a total of nine applications over two months in late spring. Two monitoring tests were conducted to evaluate the strength and health status of hives. Hives that consumed postbiotic products enhanced their strength, increased bee population and egg laying of the queen, and maintained their reserves of pollen, whereas these parameters decreased in hives belonging to other groups. Furthermore, although the results suggested a favorable effect of postbiotic products on the trend of N. ceranae infection levels, probiotics showed intermediate results. While awaiting long-term results regarding V. destructor infestation, which showed similar trends in all groups, feed supplementation with postbiotics could be an important tool for beekeepers to enhance the strength and health status of their hives.
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Affiliation(s)
| | - María Martín
- Neobéitar S.L. Av. Alemania 6 1°B, 10001 Cáceres, Spain
| | | | - Ana Pérez
- Neobéitar S.L. Av. Alemania 6 1°B, 10001 Cáceres, Spain
| | - Remigio Martínez
- Department of Animal Health, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain
| | - María Bravo
- Ingulados, Miguel Servet 11-13, 10004 Cáceres, Spain.
| | - Juan Manuel Alonso
- Department of Animal Health, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain.
| | - David Risco
- Department of Animal Medicine, Facultad de Veterinaria, Universidad de Extremadura, Av. de la Universidad s/n, 10003 Cáceres, Spain.
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Short communication: Varroa destructor re-invasion dynamics during autumn and winter in Apis mellifera colonies from a temperate climate. J Invertebr Pathol 2023; 197:107890. [PMID: 36708917 DOI: 10.1016/j.jip.2023.107890] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/09/2023] [Accepted: 01/16/2023] [Indexed: 01/26/2023]
Abstract
Infestation with Varroa destructor compromises the survival of Apis mellifera colonies, especially during the winter season. In order to prevent colony losses due to the presence of Varroa mites, determination of the infestation level and the application of autumn treatment is highly recommended. However, autumn reinvasion by inter-apiary and intra-apiary horizontal transmission might threaten the control strategies. Drivers like the infestation level of untreated colonies, the presence of bee brood during late autumn and the colonies disposition within the apiary might explain at least partially the re-invasion rates of treated colonies during autumn and winter. A total of six apiaries with five colonies were distributed within a 30 km radius. Colonies were arranged within each apiary following a circular or a lineal disposition. Twenty-four of the thirty colonies were treated during late summer against V. destructor and one colony per apiary remained untreated. The phoretic Varroa infestation and the adult bee population, brood area and nutritional reserves in the colonies was estimated before and after treatment and then for the next four months (late autumn and winter season). In this study, a model for the V. destructor re-invasion dynamics during autumn and winter in honey bee colonies from a temperate climate was fitted. According to these results, the re-invasion probability is higher for lineal disposition of the colonies that also present a higher amount of brood availability during late autumn and winter. Beekeeping practical implications are discussed in the context of an Integrated Pest management approach.
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Bruce Krejčí A, Votýpková K, Lukeš J, Votýpka J. Varroa destructor. Trends Parasitol 2023; 39:487-488. [PMID: 36967341 DOI: 10.1016/j.pt.2023.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023]
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