51
|
Resende-Silva GA, Turchen LM, Guedes RNC, Cutler GC. Imidacloprid Soil Drenches Affect Weight and Functional Response of Spined Soldier Bug (Hemiptera: Pentatomidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:558-564. [PMID: 30566635 DOI: 10.1093/jee/toy401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 06/09/2023]
Abstract
There are ongoing concerns of potential direct and indirect lethal and sublethal effects of insecticides on nontarget arthropod populations. The risk to natural enemies from systemic insecticides is mainly through exposure to the active ingredient by ingestion, and such risk may be elevated for omnivores that feed on treated plants, as well as herbivores that also feed on those same treated plants. Podisus maculiventris (Say), an important natural enemy in many agricultural systems, can be potentially exposed to the neonicotinoid imidacloprid when ingesting contaminated prey and feeding on plants subjected to soil-drench applications of this compound. In the current study, we examined the potential impact of imidacloprid soil drenches on some functional and morphological endpoints. Cabbage plants were treated with soil drenches of imidacloprid that corresponded to half and full recommended labels rates against whiteflies and aphids. Fourth instar diamondback moth, Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae), larvae on plants were used as prey in our experiments; P. xylostella is not a target of imidacloprid applications but may co-occur with other pests in systems where the insecticide is applied. We found that exposure to imidacloprid-treated plants did not cause significant mortality neither to P. maculiventris nor to P. xylostella, but both treatment concentrations impaired the predation, with consequences for predator weight gain during the assessment period. Our results corroborate those from other studies and demonstrate that effects from systemic insecticides can transcend trophic levels to affect natural enemies indirectly, such as through exposure from feeding on pests not targeted by the insecticide.
Collapse
Affiliation(s)
- Geverson A Resende-Silva
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Leonardo M Turchen
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | | | - G Christopher Cutler
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
| |
Collapse
|
52
|
Kunegel-Lion M, Goodsman DW, Lewis MA. When managers forage for pests: Implementing the functional response in pest management. Ecol Modell 2019. [DOI: 10.1016/j.ecolmodel.2018.10.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
53
|
Rugno GR, Zanardi OZ, Parra JRP, Yamamoto PT. Lethal and Sublethal Toxicity of Insecticides to the Lacewing Ceraeochrysa Cubana. NEOTROPICAL ENTOMOLOGY 2019; 48:162-170. [PMID: 30168012 DOI: 10.1007/s13744-018-0626-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 08/06/2018] [Indexed: 06/08/2023]
Abstract
The lethal and sublethal effects of 11 insecticides on the predator Ceraeochrysa cubana (Hagen) were assessed under laboratory conditions. First-instar larvae and adults ≤ 48 h old were sprayed with the highest insecticides doses allowed to control Diaphorina citri Kuwayama in the citrus crop. The survival and duration rates of the different development stages, sex ratio, pre-oviposition period, fecundity, and fertility of the insects were evaluated. In the larval bioassay, chlorpyrifos and malathion had lethal effect which none larvae survived. Azadirachtin, lambda-cyhalothrin + chlorantraniliprole, lambda-cyhalothrin + thiamethoxam, and thiamethoxam had lethal and sublethal effects that did not allow to estimate the life table parameters because the low number of couples formed. Esfenvalerate, imidacloprid WG and SC, phosmet, and pyriproxyfen had sublethal effects which were reflected in the net reproductive rate and in the intrinsic rate of natural increase. In bioassay using adults, none of the individuals survived in the chlorpyrifos, lambda-cyhalothrin + chlorantraniliprole, lambda-cyhalothrin + thiamethoxam, malathion, or thiamethoxam treatments, and the azadirachtin, esfenvalerate, imidacloprid WG and SC, phosmet, and pyriproxyfen treatments were significantly lower compared to the control. None of the insecticides was harmless to first-instar larvae and adults of C. cubana under laboratory conditions showing their potential to reduce the efficiency of this predator.
Collapse
Affiliation(s)
- G R Rugno
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture/Univ of São Paulo (ESALQ/USP), Av. Pádua Dias, 11 - Agronomia, Piracicaba, São Paulo, 3417-900, Brasil.
| | - O Z Zanardi
- Fundo de Defesa da Citricultura (FUNDECITRUS), Araraquara, São Paulo, Brasil
| | - J R P Parra
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture/Univ of São Paulo (ESALQ/USP), Av. Pádua Dias, 11 - Agronomia, Piracicaba, São Paulo, 3417-900, Brasil
| | - P T Yamamoto
- Dept of Entomology and Acarology, Luiz de Queiroz College of Agriculture/Univ of São Paulo (ESALQ/USP), Av. Pádua Dias, 11 - Agronomia, Piracicaba, São Paulo, 3417-900, Brasil
| |
Collapse
|
54
|
Jiang J, Zhang Z, Yu X, Yu C, Liu F, Mu W. Sublethal and transgenerational effects of thiamethoxam on the demographic fitness and predation performance of the seven-spot ladybeetle Coccinella septempunctata L. (Coleoptera: Coccinellidae). CHEMOSPHERE 2019; 216:168-178. [PMID: 30368081 DOI: 10.1016/j.chemosphere.2018.10.126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
Seven-spot ladybird beetles, Coccinella septempunctata L., are critical aphidophagous predators in the agricultural environment. Thiamethoxam, a neonicotinoid insecticide, is commonly used for controlling pests but impairs their natural enemies at the same time. To improve effective IPM (integrated pest management) strategies, we evaluated the sublethal and transgenerational effects of thiamethoxam on C. septempunctata. Our results showed that thiamethoxam at doses of 0.1 × LC10 (0.053 mg L-1) and LC10 (0.53 mg L-1) significantly reduced adult emergence, fecundity and fertility of the parental generation. In unexposed progeny (F1) of thiamethoxam-exposed parents, at the two doses 0.1 × LC10 and LC10, the larval stage was prolonged, and total longevity was decreased by 18.76 and 24.46%, respectively. The higher concentrations (0.1 × LC10 and LC10) also decreased the fecundity by 33.74 and 46.56%, respectively, and the oviposition period by 19.67 and 25.01%, respectively. In addition, demographic parameters including the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0), and mean generation time (T) were significantly reduced when exposed to LC10. Moreover, the predation activity of the F1 generation was reduced by the transgenerational effects of LC10. These results disclose negative influence of thiamethoxam at sublethal concentrations on this ladybird predator and its subsequent generation.
Collapse
Affiliation(s)
- Jiangong Jiang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Zhengqun Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China
| | - Xin Yu
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, 271018 Shandong, PR China
| | - Caihong Yu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083, Beijing, China
| | - Feng Liu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Wei Mu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| |
Collapse
|
55
|
Martínez LC, Plata-Rueda A, Gonçalves WG, Freire AFPA, Zanuncio JC, Bozdoğan H, Serrão JE. Toxicity and cytotoxicity of the insecticide imidacloprid in the midgut of the predatory bug, Podisus nigrispinus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:69-75. [PMID: 30296698 DOI: 10.1016/j.ecoenv.2018.09.124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 09/11/2018] [Accepted: 09/28/2018] [Indexed: 06/08/2023]
Abstract
The selectivity of insecticides on natural enemies in pest control are an important strategy for Integrated Pest Management. However, insecticides can have side effects on non-target organisms such as natural enemies. This study evaluated the histological and cytological changes mediated by the sublethal concentration of the imidacloprid insecticide on the midgut of non-target predator Podisus nigrispinus (Heteroptera: Pentatomidae), used in the biological control of pests. Imidacloprid was toxic for P. nigrispinus with LC50 = 3.75 mg L-1 and survival of 51.8%. This sublethal concentration of imidacloprid causes histological alterations in the midgut epithelium and cytotoxic features were irregular border epithelium, cytoplasmic vacuolation, and apocrine secretions in the first 6 h after exposure with the insecticide. Apoptosis in the digestive cells occurs after 12 h of exposure in the midgut. These results suggest that imidacloprid may affect the digestive physiology of P. nigrispinus and compromise the effective predation of this insect a biological control agent. The associated use of this insecticide with the predator in pest control should be carefully evaluated.
Collapse
Affiliation(s)
- Luis Carlos Martínez
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil.
| | - Angelica Plata-Rueda
- Instituto de Ciências Agrárias, Universidade Federal de Viçosa, 38810-000 Rio Paranaíba, Minas Gerais, Brazil.
| | - Wagner Gonzaga Gonçalves
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil.
| | | | - José Cola Zanuncio
- Departamento de Entomologia, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil.
| | | | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000 Viçosa, Minas Gerais, Brazil.
| |
Collapse
|
56
|
Martínez LC, Plata-Rueda A, Neves GDS, Gonçalves WG, Zanuncio JC, Bozdoğan H, Serrão JE. Permethrin induces histological and cytological changes in the midgut of the predatory bug, Podisus nigrispinus. CHEMOSPHERE 2018; 212:629-637. [PMID: 30173109 DOI: 10.1016/j.chemosphere.2018.08.134] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 08/24/2018] [Accepted: 08/26/2018] [Indexed: 06/08/2023]
Abstract
Insecticides used in the agriculture and forestry have side effects on non-target organisms used as natural enemies. This study evaluated the histopathology and cytotoxicity of permethrin on the midgut of the non-target predatory bug, Podisus nigrispinus (Heteroptera: Pentatomidae) used in the biological control of pest insects. The toxicity and survival of this insect were determined using six concentrations of permethrin via ingestion. Histological and ultraestutural changes of the midgut of P. nigrispinus were analyzed after exposure to permethrin. The insecticide caused toxicity in P. nigrispinus with LC50 = 0.46 μg L-1 and survival of 47% after 72 h of exposure. The histological changes in the midgut were irregularly bordered epithelium, cytoplasmic vacuolization and apocrine secretions in the lumen after 6 h following exposure to the insecticide. Cytotoxic effects such as granules and vacuoles secreted into the lumen, presence of autophagosomes, and dilatation of infolds of the basal plasma membrane were observed in the three regions of the midgut. Cells of the midgut in apoptosis occurred after 12 h of exposure. Permethrin causes toxic effects, inhibits survival, and produces changes in the histology and cytology of the midgut in P. nigrispinus, suggesting that the cell stress induced by this insecticide can disrupt physiological processes such as digestion, compromising the potential of the predator as a biological control agent of pests. The low selectivity of permethrin to a non-target organism such as the predatory bug, P. nigrispinus indicates that the associated use of this insecticide in biological control should be better evaluated.
Collapse
Affiliation(s)
- Luis Carlos Martínez
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil.
| | - Angelica Plata-Rueda
- Instituto de Ciências Agrárias, Universidade Federal de Viçosa, 38810-000, Viçosa, Minas Gerais, Brazil.
| | - Guilherme da Silva Neves
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil
| | - Wagner Gonzaga Gonçalves
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil
| | - José Cola Zanuncio
- Departamento de Entomologia, Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil.
| | - Hakan Bozdoğan
- Department of Plant and Animal Production, Kirsehir Vocational School of Technicial Sciences, Ahi Evran University, 40100, Kirsehir, Turkey.
| | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, 36570-000, Viçosa, Minas Gerais, Brazil.
| |
Collapse
|
57
|
de Castro AA, Legaspi JC, Tavares WDS, Meagher RL, Miller N, Kanga L, Haseeb M, Serrão JE, Wilcken CF, Zanuncio JC. Lethal and behavioral effects of synthetic and organic insecticides on Spodoptera exigua and its predator Podisus maculiventris. PLoS One 2018; 13:e0206789. [PMID: 30408828 PMCID: PMC6224277 DOI: 10.1371/journal.pone.0206789] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 10/19/2018] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The beet armyworm, Spodoptera exigua (Lepidoptera: Noctuidae), is a key insect pest of edible vegetables around the world and it is resistant to insecticide of different classes. Insecticides that are effective to this pest and selective to predator stinkbugs are required for the integrated management of S. exigua. METHODS The toxicity of four commercial insecticide formulations azadirachtin + pyrethrin, spinosad, pyrethrin and chlorantraniliprole was tested on the target pest and their side effect were evaluated on the spined soldier bug, Podisus maculiventris (Heteroptera: Pentatomidae) through different bioassays. RESULTS Spinosad and chlorantraniliprole were more toxic to S. exigua than to the predator P. maculiventris but opposite results were obtained for pyrethrin and azadirachtin + pyrethrin in contact toxicity bioassay. Chlorantraniliprole was the most toxic to S. exigua in oral toxicity bioassay, followed by spinosad, pyrethrin and azadirachtin + pyrethrin. Spinosad in oral toxicity bioassay was the most toxic to P. maculiventris, followed by pyrethrin, azadirachtin + pyrethrin and chlorantraniliprole. Spinosad caused irritability to the predator while pyrethrin to the pest. The insecticide repellency was not observed over the tested insect species. The synthetic insecticide chlorantraniliprole was less toxic than the natural pyrethrin, azadirachtin + pyrethrin and spinosad to the predator. CONCLUSIONS This work provides useful information on the combination of commercial insecticides with the predator P. maculiventris to controlling S. exigua in integrated pest management (IPM) programs.
Collapse
Affiliation(s)
- Ancidériton Antonio de Castro
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil
- United States Department of Agriculture—Agricultural Research Service, CMAVE/Florida A&M University—Center for Biological Control, Tallahassee, Florida, United States of America
| | - Jesusa Crisostomo Legaspi
- United States Department of Agriculture—Agricultural Research Service, CMAVE/Florida A&M University—Center for Biological Control, Tallahassee, Florida, United States of America
| | - Wagner de Souza Tavares
- United States Department of Agriculture—Agricultural Research Service, CMAVE/Florida A&M University—Center for Biological Control, Tallahassee, Florida, United States of America
- Departamento de Fitotecnia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil
| | - Robert L. Meagher
- United States Department of Agriculture—Agricultural Research Service, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, Florida, United States of America
| | - Neil Miller
- United States Department of Agriculture—Agricultural Research Service, CMAVE/Florida A&M University—Center for Biological Control, Tallahassee, Florida, United States of America
| | - Lambert Kanga
- Center for Biological Control, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, Florida, United States of America
| | - Muhammad Haseeb
- Center for Biological Control, College of Agriculture and Food Sciences, Florida A&M University, Tallahassee, Florida, United States of America
| | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil
| | - Carlos Frederico Wilcken
- Departamento de Proteção Vegetal, Faculdade de Ciências Agronômicas, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Botucatu, São Paulo, Brasil
| | - José Cola Zanuncio
- Departamento de Entomologia/BIOAGRO, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brasil
| |
Collapse
|
58
|
Nawaz M, Hafeez M, Mabubu JI, Dawar FU, Li X, Khan MM, Hua H, Cai W. Transcriptomic analysis of differentially expressed genes and related pathways in Harmonia axyridis after sulfoxaflor exposure. Int J Biol Macromol 2018; 119:157-165. [DOI: 10.1016/j.ijbiomac.2018.07.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/06/2018] [Accepted: 07/10/2018] [Indexed: 10/28/2022]
|
59
|
Jiang J, Zhang Z, Yu X, Ma D, Yu C, Liu F, Mu W. Influence of lethal and sublethal exposure to clothianidin on the seven-spotted lady beetle, Coccinella septempunctata L. (Coleoptera: Coccinellidae). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:208-213. [PMID: 29885616 DOI: 10.1016/j.ecoenv.2018.05.076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 05/22/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
The seven-spotted ladybird beetle, Coccinella septempunctata L., as a dominant predator of aphids, has played a crucial role in integrated pest management (IPM) strategies in agricultural ecosystems. To study the risk of insecticides to C. septempunctata, the neonicotinoid clothianidin was selected for evaluation of its influence on C. septempunctata at lethal and sublethal doses. The LR50 (application rate causing 50% mortality) in the exposed larvae decreased from 19.94 to 5.91 g a.i. ha-1, and the daily HQ (hazard quotient) values increased from 3.00 to 10.15, indicating potential intoxication risks. We also determined NOERs (No Observed Effect application Rates) of clothianidin on the total developmental time (10 g a.i. ha-1), survival (2.5 g a.i. ha-1) and pupation (5 g a.i. ha-1). Moreover, clothianidin at a NOER of 2.5 g a.i. ha-1 did not profoundly affect adult emergence, fecundity or egg hatchability. The total effect (E) assessment also showed that clothianidin at 2.5 g a.i. ha-1 was slightly harmful to C. septempunctata. These results suggested that clothianidin would impair C. septempunctata when applied at over 2.5 g a.i. ha-1 in the field. Conservation of this biological control agent in agricultural ecosystems thus requires further measures to decrease the applied dosages of clothianidin.
Collapse
Affiliation(s)
- Jiangong Jiang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Zhengqun Zhang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Xin Yu
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Dicheng Ma
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Caihong Yu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China
| | - Feng Liu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Wei Mu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, Shandong 271018, China.
| |
Collapse
|
60
|
Cheng S, Lin R, Zhang N, Yuan S, Zhou X, Huang J, Ren X, Wang S, Jiang H, Yu C. Toxicity of six insecticides to predatory mite Amblyseius cucumeris (Oudemans) (Acari: Phytoseiidae) in- and off-field. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:715-720. [PMID: 29940512 DOI: 10.1016/j.ecoenv.2018.06.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 06/07/2018] [Accepted: 06/09/2018] [Indexed: 06/08/2023]
Abstract
Amblyseius cucumeris (Oudemans) is a beneficial non-target arthropod (NTA) and a key predator of tetranychid mites in integrated pest management (IPM) programs across China. Evaluating the toxic effects of insecticides on such predatory mites is essential for the success and development of IPM. We tested six insecticides to determine the risk of neonicotinoid insecticide toxicity to predatory mites, using the 'open glass plate method' and adult female A. cucumeris in a "worst case laboratory exposure" scenario. A 48-h toxicity test was performed using the hazard quotient (HQ) approach to evaluate the risk of each insecticide. The LR50 values (application rate that caused 50% mortality) of acetamiprid, thiamethoxam, imidacloprid, and dinotefuran were 76.4, 104.5, 84.9, and 224.6 g active ingredient (a.i.) ha-1, respectively, with in-field HQ values of 0.40, 1.28, 0.49, and 0.82, respectively. The HQ values were lower than the trigger value of 2, and were consistent with off-field values. The risks of the four neonicotinoid insecticides to adult female A. cucumeris were acceptable in two exposure scenarios in field and off field. The 48-h LR50 values for bifenthrin and malathion were 0.008 and 0.062 g. a.i. ha-1, respectively, which were much lower than the recommended field application rates. The HQ values were much higher than the trigger values for both in- and off-field, indicating that the risks of these two insecticides were unacceptable. Bifenthrin and malathion posed an extremely high risk to the test species, and their use should be restricted to reduce risks to the field with augmentative releases of A. cucumeris.
Collapse
Affiliation(s)
- Shenhang Cheng
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China
| | - Ronghua Lin
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Nan Zhang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Shankui Yuan
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Xinxin Zhou
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Jian Huang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Xiaodong Ren
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Shoushan Wang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Hui Jiang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Caihong Yu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China.
| |
Collapse
|
61
|
Reis TC, Soares MA, Santos JBD, Santos CAD, Serrão JE, Zanuncio JC, Ferreira EA. Atrazine and nicosulfuron affect the reproductive fitness of the predator Podisus nigrispinus (Hemiptera: Pentatomidae). AN ACAD BRAS CIENC 2018; 90:3625-3633. [PMID: 30184014 DOI: 10.1590/0001-3765201820170748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 05/21/2018] [Indexed: 11/22/2022] Open
Abstract
Herbicides can impact non-target metabolic pathways in natural enemies and lead to the reduction of these populations in the field. Behavioral characteristics, morphology and histology of reproductive structures and reproduction of females of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were evaluated under the effect of the herbicides atrazine, nicosulfuron and the mixture of both. The number of mature oocytes per ovary was lower in females exposed to the herbicides atrazine, nicosulfuron and the mixture of both. Herbicides did not affect the longevity and mortality of P. nigrispinus, therefore, they are selective for this predator. On the other hand, herbicides can cause sublethal effects by affecting the reproduction of predators.
Collapse
Affiliation(s)
- Tatiane C Reis
- Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Campus JK, Rodovia MGT 367, 39100-000 Diamantina, MG, Brazil
| | - Marcus A Soares
- Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Campus JK, Rodovia MGT 367, 39100-000 Diamantina, MG, Brazil
| | - José B Dos Santos
- Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Campus JK, Rodovia MGT 367, 39100-000 Diamantina, MG, Brazil
| | - Conceição A Dos Santos
- Departamento de Ciências Biológicas e da Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Campus JK, Rodovia MGT 367, 39100-000 Diamantina, MG, Brazil
| | - Jose Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Av. PH Rolfs, s/n, Campus Universitário, 36570-000 Viçosa, MG, Brazil
| | - José C Zanuncio
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Av. PH Rolfs, s/n, Campus Universitário, 36570-000 Viçosa, MG, Brazil
| | - Evander A Ferreira
- Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri/UFVJM, Campus JK, Rodovia MGT 367, 39100-000 Diamantina, MG, Brazil
| |
Collapse
|
62
|
Jiang J, Ma D, Zhang Z, Yu C, Liu F, Mu W. Favorable compatibility of nitenpyram with the aphid predator, Coccinella septempunctata L. (Coleoptera: Coccinellidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:27393-27401. [PMID: 30039483 DOI: 10.1007/s11356-018-2785-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 07/17/2018] [Indexed: 06/08/2023]
Abstract
The increasing demand for lessening the chemical input in agricultural ecosystems requires an efficient combination of pesticides and biological controls. Thus, fully understanding the compatibility of pesticides and beneficial arthropod predators is helpful and essential. In this study, we evaluated the influence of nitenpyram on both larvae and adults of Coccinella septempunctata using exposure doses of 10, 25, 50, 100, and 150% of the maximum recommended field rate (MRFR) (3, 7.5, 15, 30, and 45 g a.i. ha-1, respectively) and a blank control based on a preliminary acute 72-h toxicity experiment. In the long-term test, the LR50 (application rate causing the mortality of 50% of the individuals) of nitenpyram for C. septempunctata decreased from 73.43 to 63.0 g a.i. ha-1, while the HQ (hazard quotient) values remained below the threshold value of 2. Nitenpyram did not significantly influence the survival rate, fecundity, pupation, or adult emergence at 150% of the label rate (lowest LR50 = 63.0 g a.i. ha-1), and its demonstrated NOER (No Observed Effect application Rates) values are all above 45 g a.i. ha-1. Likewise, the total developmental time and egg hatchability were not significantly affected at 100% of the label rate (NOER = 30 g a.i. ha-1). The assessment of the total effect (E) suggested that nitenpyram could be classified as harmless to C. septempunctata below/at a dose of 30 g a.i. ha-1. The lowest LR50 and NOER values were both above the maximum recommended field application rate for nitenpyram (30 g a.i. ha-1) for controlling aphids in China. All results indicated that the on-label use of nitenpyram is compatible with the natural enemy C. septempunctata in agricultural ecosystems.
Collapse
Affiliation(s)
- Jiangong Jiang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Dicheng Ma
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Zhengqun Zhang
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Caihong Yu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, Shandong, China
| | - Feng Liu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China
| | - Wei Mu
- College of Plant Protection, Key Laboratory of Pesticide Toxicology & Application Technique, Shandong Agricultural University, Tai'an, 271018, Shandong, People's Republic of China.
| |
Collapse
|
63
|
Luna RF, Bestete LR, Torres JB, da Silva-Torres CSA. Predation and behavioral changes in the neotropical lacewing Chrysoperla externa (Hagen) (Neuroptera: Chrysopidae) exposed to lambda-cyhalothrin. ECOTOXICOLOGY (LONDON, ENGLAND) 2018; 27:689-702. [PMID: 29797169 DOI: 10.1007/s10646-018-1949-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/08/2018] [Indexed: 06/08/2023]
Abstract
Pyrethroid insecticides are widely recommended against various defoliating pest species, but usually lack efficacy against sucking pests such as aphids, which are preferred prey of lacewing larvae. Interaction of pyrethroids and lacewings are likely to occur in fields infested by both defoliating and sap-sucking pests and should provide a complementary control. Therefore, our study aimed to estimate dose-mortality curves and behavioral changes by Chrysoperla externa exposed to lambda-cyhalothrin. We tested the susceptibility of two populations from different locations and insecticide history exposure through topical application. Based on the LD50-calculated, the population exhibiting the greater LD50 was exposed to resistance enhancement (Sel) by treating larvae once for seven successive generations. The population with lower LD50 was kept without selection (Nsel). Subsequently, walking, predation and oviposition behavioral after exposure to dried insecticide residues were investigated. After seven generations with insecticide selection, the resistance rations between Sel and Nsel populations were 5.85- and 9.37-fold higher for larvae and 3.38- and 2.75-fold higher for adults, respectively. Selected females caged in partially treated arenas laid similar eggs number on both treated and untreated surfaces, while Nsel females laid fewer eggs on treated surfaces. Insecticide repellency was not observed in either population, although irritability was observed for Nsel larvae. Selected larvae confined on fully and partially treated surfaces walked further, for a longer time, and with greater speeds compared to Nsel larvae. Furthermore, Sel and Nsel larvae had reduced predation rates when confined on treated surfaces, and Nsel larvae consumed less prey than Sel larvae. Results indicate changes in susceptibility, behavior, and predation rate of C. externa following exposure to lambda-cyhalothrin.
Collapse
Affiliation(s)
- René Fernando Luna
- Departamento de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, Recife, PE, 52171-900, Brazil
| | - Luziani Rezende Bestete
- Departamento de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, Recife, PE, 52171-900, Brazil
| | - Jorge Braz Torres
- Departamento de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Rua Dom Manoel de Medeiros, Recife, PE, 52171-900, Brazil.
| | | |
Collapse
|
64
|
D'Ávila VA, Reis LC, Barbosa WF, Cutler GC, Torres JB, Guedes RNC. Prey Foraging Under Sublethal Lambda-Cyhalothrin Exposure on Pyrethroid-Susceptible and -Resistant Lady Beetles (Eriopis connexa (Coleoptera: Coccinelidae)). JOURNAL OF ECONOMIC ENTOMOLOGY 2018; 111:1042-1047. [PMID: 29474651 DOI: 10.1093/jee/toy037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Indexed: 06/08/2023]
Abstract
Sublethal insecticide exposure may affect foraging of insects, including natural enemies, although the subject is usually neglected. The lady beetle Eriopis connexa (Germar, 1824) (Coleoptera: Coccinelidae) is an important predator of aphids with existing pyrethroid-resistant populations that are undergoing scrutiny for potential use in pest management systems characterized by frequent insecticide use. However, the potential effect of sublethal pyrethroid exposure on this predator's foraging activity has not yet been assessed and may compromise its use in biological control. Therefore, our objective was to assess the effect of sublethal lambda-cyhalothrin exposure on three components of the prey foraging activity (i.e., walking, and prey searching and handling), in both pyrethroid-susceptible and -resistant adults of E. connexa. Both lady beetle populations exhibited similar walking patterns without insecticide exposure in noncontaminated arenas, but in partially contaminated arenas walking differed between strains, such that the resistant insects exhibited greater walking activity. Behavioral avoidance expressed as repellence to lambda-cyhalothrin was not observed for either the susceptible or resistant populations of E. connexa, but the insecticide caused avoidance by means of inducing irritability in 40% of the individuals, irrespective of the strain. Insects remained in the insecticide-contaminated portion of the arena for extended periods resulting in greater exposure. Although lambda-cyhalothrin exposure did not affect prey searching by susceptible lady beetles, prey searching was extended for exposed resistant predators. In contrast, prey handling was not affected by population or by lambda-cyhalothrin exposure. Thus, sublethal exposure to the insecticide in conjunction with the insect resistance profile can affect prey foraging with pyrethroid-exposed resistant predators exhibiting longer prey searching time associated with higher walking activity reducing its predatory performance.
Collapse
Affiliation(s)
- V A D'Ávila
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - L C Reis
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - W F Barbosa
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - G C Cutler
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
| | - J B Torres
- Departamento de Agronomia, Setor de Entomologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - R N C Guedes
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| |
Collapse
|
65
|
Uiterwaal SF, DeLong JP. Multiple factors, including arena size, shape the functional responses of ladybird beetles. J Appl Ecol 2018. [DOI: 10.1111/1365-2664.13159] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stella F. Uiterwaal
- School of Biological Sciences; University of Nebraska - Lincoln; Lincoln Nebraska
| | - John P. DeLong
- School of Biological Sciences; University of Nebraska - Lincoln; Lincoln Nebraska
| |
Collapse
|
66
|
Rimoldi F, Fogel MN, Ronco AE, Schneider MI. Comparative susceptibility of two Neotropical predators, Eriopis connexa and Chrysoperla externa, to acetamiprid and pyriproxyfen: Short and long-term effects after egg exposure. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 231:1042-1050. [PMID: 28915542 DOI: 10.1016/j.envpol.2017.08.097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/09/2017] [Accepted: 08/29/2017] [Indexed: 06/07/2023]
Abstract
Compatibility assessments between selective insecticides and the natural enemies of pests are essential for integrated-pest-management programs. Chrysoperla externa and Eriopis connexa are two principal Neotropical predators of agricultural pests whose conservation in agroecosystems requires a toxicity evaluation of pesticides to minimize the impact on those beneficial insects on the environment. The objective of this work was to evaluate the toxicity of the insecticides pyriproxyfen and acetamiprid on C. externa and E. connexa eggs exposed to the maximum recommended field concentrations of each along with three successive dilutions. The survival and the immature developmental time were assessed daily until adulthood and the mean survival time calculated over a 10-day period. The cumulative survival of E. connexa was reduced at all concentrations of both insecticides, while that of C. externa was significantly decreased by ≥50 mg L-1 of acetamiprid and ≥37.6 mg L-1 of pyriproxyfen. In both species, the reductions occurred principally on the eggs and first larval instar. Survival curves, in general, differed from those of the controls, with the mean survival time of E. connexa being significantly shorter in insecticides treatments than that of the controls. Certain concentrations of each of the insecticide lengthened the egg and first-larval-instar developmental periods of E. connexa and C. externa, respectively. Also, pyriproxyfen reduced the first-larval-instar period and lengthened the fourth of E. connexa. Acetamiprid was more toxic to E. connexa than to C. externa at the two highest concentrations. Conversely, at those same concentrations of pyriproxyfen, the relative toxicity to the two species was reversed. The present work represents the first investigation on the comparative susceptibility of two relevant Neotropical biological control agents to acetamiprid and pyriproxyfen. Also, it highlights the necessity of assessing long-term effects in the compatibility studies between natural enemies of agricultural pests and insecticides.
Collapse
Affiliation(s)
- Federico Rimoldi
- Centro de Investigaciones del Medio Ambiente (CIMA), Facultad de Ciencias Exactas, CONICET, Universidad Nacional de La Plata, Calle 47 y 115, 1900 La Plata, Buenos Aires, Argentina.
| | - Marilina N Fogel
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, Universidad Nacional de La Plata), Boulevard 120 Nº 1460 entre 60 y 64, 1900 La Plata, Buenos Aires, Argentina.
| | - Alicia E Ronco
- Centro de Investigaciones del Medio Ambiente (CIMA), Facultad de Ciencias Exactas, CONICET, Universidad Nacional de La Plata, Calle 47 y 115, 1900 La Plata, Buenos Aires, Argentina
| | - Marcela I Schneider
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, Universidad Nacional de La Plata), Boulevard 120 Nº 1460 entre 60 y 64, 1900 La Plata, Buenos Aires, Argentina.
| |
Collapse
|
67
|
Zanuzo Zanardi O, Pavan Bordini G, Aparecida Franco A, Jacob CRO, Takao Yamamoto P. Sublethal effects of pyrethroid and neonicotinoid insecticides on Iphiseiodes zuluagai Denmark and Muma (Mesostigmata: Phytoseiidae). ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:1188-1198. [PMID: 28819698 DOI: 10.1007/s10646-017-1844-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/05/2017] [Indexed: 06/07/2023]
Abstract
The predator mite Iphiseiodes zuluagai Denmark & Muma is an important biological-control agent of mite pests, and it is one of the most common species found in citrus orchards. This study assessed, under laboratory conditions, the toxicity and duration of the harmful effects of five insecticides, the three pyrethroids deltamethrin, esfenvalerate and lambda-cyhalothrin, and the two neonicotinoids imidacloprid and thiamethoxam on I. zuluagai. Furthermore, we estimated the life-table parameters of the predator. Our results showed that deltamethrin and lambda-cyhalothrin caused higher mortality of larvae and adults than imidacloprid and thiamethoxam. In contrast, esfenvalerate provided larval mortality similar to imidacloprid and thiamethoxam, but it did not cause significant adult mortality of the predator. Mites that developed on pyrethroid residues showed lower survival of the immature stages, fecundity, and longevity compared to neonicotinoid residues and the control treatment. The estimated life-table parameters indicated that deltamethrin, lambda-cyhalothrin and esfenvalerate caused greater reduction in R o and r of I. zuluagai compared with imidacloprid and thiamethoxam, which were similar to the control treatment. Besides the impacts on biological and population parameters, the duration of the harmful activity of pyrethroid insecticides was longer than the neonicotinoids. Therefore, the use of pyrethroid insecticides to control pest insects may involve serious implications for integrated pest-management programs that aim to exploit the biological control by I. zuluagai in citrus orchards.
Collapse
Affiliation(s)
- Odimar Zanuzo Zanardi
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil.
| | - Gabriela Pavan Bordini
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil
| | - Aline Aparecida Franco
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil
| | - Cynthia Renata Oliveira Jacob
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil
| | - Pedro Takao Yamamoto
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil
| |
Collapse
|
68
|
Santos KFA, Zanuzo Zanardi O, de Morais MR, Jacob CRO, de Oliveira MB, Yamamoto PT. The impact of six insecticides commonly used in control of agricultural pests on the generalist predator Hippodamia convergens (Coleoptera: Coccinellidae). CHEMOSPHERE 2017; 186:218-226. [PMID: 28780449 DOI: 10.1016/j.chemosphere.2017.07.165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 06/07/2023]
Abstract
Hippodamia convergens is an important predator found in different agroecosystems. We evaluated the impacts of six insecticides on eggs, larvae and adults of this predator. For eggs, all insecticides reduced larval hatching rates, but did not affect egg duration. Chlorpyrifos and phosmet reduced larval survival; and chlorpyrifos, etofenprox and phosmet prolonged the larva development time. The survival and duration of pupae were not affected by all insecticides tested. Chlorpyrifos reduced fecundity, fertility and longevity when eggs were sprayed. For first-instar larvae, chlorpyrifos, etofenprox, phosmet and imidacloprid caused 100% mortality, while azadirachtin and thiamethoxam caused 35.0 and 52.7% mortality, respectively. However, azadirachtin and thiamethoxam did not affect the other biological parameters of the predator. In adults, chlorpyrifos, etofenprox and phosmet reduced adult survival. Chlorpyrifos, etofenprox, and phosmet reduced fecundity and longevity, but did not affect fertility. Azadirachtin, imidacloprid and thiamethoxam did not affect fecundity, fertility or longevity. Based on demographic parameters, all insecticides reduced the net reproductive rate (Ro), intrinsic rate of increase (r) and finite rate of increase (λ) of the predator when eggs were treated directly. Azadirachtin, chlorpyrifos, etofenprox and phosmet increased the mean generation time (T), while the effects of imidacloprid and thiamethoxam were similar to the control. When first-instar larvae were treated, azadirachtin and thiamethoxam reduced the Ro, r and λ. Thiamethoxam increased the T value, while the effects of the other insecticides were similar to the control. These insecticides should be used with caution, in order to reduce their harmful effects on the predator in agroecosystems.
Collapse
Affiliation(s)
- Kenia Fernanda Aguiar Santos
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil
| | - Odimar Zanuzo Zanardi
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil.
| | - Matheus Rovere de Morais
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil
| | - Cynthia Renata Oliveira Jacob
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil
| | - Monique Bárbara de Oliveira
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil
| | - Pedro Takao Yamamoto
- Department of Entomology and Acarology, "Luiz de Queiroz" College of Agriculture/University of São Paulo (ESALQ/USP), 13418-900, Piracicaba, São Paulo, Brazil
| |
Collapse
|
69
|
Yuan HB, Li JH, Liu YQ, Cui L, Lu YH, Xu XY, Li Z, Wu KM, Desneux N. Lethal, sublethal and transgenerational effects of the novel chiral neonicotinoid pesticide cycloxaprid on demographic and behavioral traits of Aphis gossypii (Hemiptera: Aphididae). INSECT SCIENCE 2017; 24:743-752. [PMID: 27168374 DOI: 10.1111/1744-7917.12357] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/27/2016] [Indexed: 06/05/2023]
Abstract
Aphis gossypii Glover (Hemiptera: Aphididae) is a key pest in cotton crops, notably owing to its increasing resistance to commonly used pesticides. Such resistance prompts for the development of integrated pest management (IPM) programs that include novel pesticides being effective against the aphid. In the present study, we assessed lethal and sublethal effects of cycloxaprid, a novel chiral neonicotinoid pesticide developed in China, on A. gossypii. The lethal concentration at 50% (LC50 ) value of cycloxaprid on A. gossypii was estimated, using the dipping method, at 7.73 mg/L. The impact of a sublethal concentration (LC10 ) and a lethal concentration (LC40 ) of cycloxaprid on A. gossypii population growth and feeding behavior (using electrical penetration graph technique [EPG]), and its transgenerational effect were further assessed. Adult longevity and fecundity significantly decreased after exposure to LC40 or LC10 of cycloxaprid. Cycloxaprid with sublethal concentrations (especially LC40 ) had negative effects on phloem ingestion by A. gossypii. Additionally, the offspring of the adults exposed to LC40 of cycloxaprid had shorter nymphal development duration and adult longevity than the control, and those from LC10 and LC40 treatments had lower adult fecundity and net productive rate. We demonstrated that cycloxaprid is a pesticide showing both lethal and sublethal activities, and transgenerational effects on A. gossypii; it may be useful for implementation in IPM programs against this aphid pest.
Collapse
Affiliation(s)
- Hai-Bin Yuan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Jin-Hua Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agronomy, Jilin Agricultural University, Changchun, China
| | - Yong-Qiang Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Cui
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yan-Hui Lu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiao-Yong Xu
- East China University of Science and Technology, Shanghai, China
| | - Zhong Li
- East China University of Science and Technology, Shanghai, China
| | - Kong-Ming Wu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Nicolas Desneux
- French National Institute for Agricultural Research (INRA), Sophia-Antipolis, France
| |
Collapse
|
70
|
Shen XQ, Zhang YN, Li T, Jiang JYQ, Zhang JP. Toxicity of Three Acaricides to the Predatory Mite, Neoseiulus bicaudus (Acari: Phytoseiidae) and Their Impact on the Functional Response to Tetranychus turkestani (Acari: Tetranychidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:2031-2038. [PMID: 28962002 DOI: 10.1093/jee/tox206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Indexed: 06/07/2023]
Abstract
The use of chemical pesticides particularly acaricides can reduce the control efficacy of natural enemies. The objectives of this study were 1) to evaluate the toxicity of three acaricides to the phytoseiid mite Neoseiulus bicaudus (Acari: Phytoseiidae) by spraying acaricides on N. bicaudus adult females and 2) to determine the effect of these acaricides on the functional response of different stages of N. bicaudus to the prey Tetranychus turkestani Ugarov & Nikolski (Acari: Tetranychidae). The results indicated that the survivability of N. bicaudus differed among the three acaricides tested. Pyridaben exhibited the highest toxicity to N. bicaudus not only because it caused higher mortality but also because it reduced the peak consumption for adults and increased the peak consumption for deutonymphs of N. bicaudus. The two other acaricides, azocyclotin and bifenazate, also slightly reduced the peak consumption, but not significantly, and the overall functional response was not different from control, untreated predatory mites. Bifenazate (143-4,300 mg a.i./liter) was relatively nontoxic to N. bicaudus (less than 10% mortality) but highly toxic to T. turkestani (more than 95% mortality). Accordingly, bifenazate is the most suitable for maintaining N. bicaudus in the field. Combining bifenazate and azocyclotin with N. bicaudus is a possible strategy for T. turkestani management.
Collapse
Affiliation(s)
- Xiu-Qin Shen
- College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Yan-Nan Zhang
- College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Ting Li
- College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Jue-Ying-Qi Jiang
- College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Jian-Ping Zhang
- College of Agriculture, Shihezi University, Shihezi, Xinjiang 832003, China
| |
Collapse
|
71
|
Nawaz M, Cai W, Jing Z, Zhou X, Mabubu JI, Hua H. Toxicity and sublethal effects of chlorantraniliprole on the development and fecundity of a non-specific predator, the multicolored Asian lady beetle, Harmonia axyridis (Pallas). CHEMOSPHERE 2017; 178:496-503. [PMID: 28347913 DOI: 10.1016/j.chemosphere.2017.03.082] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 03/17/2017] [Accepted: 03/21/2017] [Indexed: 06/06/2023]
Abstract
In order to further develop integrated pest management (IPM) approaches for controlling insect pests, it is important to estimate the effects of pesticides. In this study, the toxicity and sublethal effects of the insecticide chlorantraniliprole on a non-specific predator, the multicolored Asian lady beetle Harmonia axyridis, were evaluated and life table parameter data were analyzed statistically using the age-stage, two-sex life table procedure. The results of this study show that the development time of second and fourth instar larvae as well as pupa was significantly prolonged in populations treated with LC10 (2.42 mg (a.i.) L-1) and LC30 (12.06 mg (a.i.) L-1), while adult longevity and fecundity were both significantly reduced and the preoviposition period (POP) was significantly prolonged following treatment compared to the control. In addition, the net reproductive rate (R0), as well as the intrinsic (r) and finite rate of increase (λ) were significantly decreased in groups treated with the insecticide. These results reveal that because sublethal concentrations of chlorantraniliprole impair the population growth of H. axyridis, more attention should be paid to the use of this chemical as a component of IPM strategies.
Collapse
Affiliation(s)
- Muhammad Nawaz
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Wanlun Cai
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhao Jing
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xingmiao Zhou
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Juma Ibrahim Mabubu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongxia Hua
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| |
Collapse
|
72
|
Camargo C, Hunt TE, Giesler LJ, Siegfried BD. Thiamethoxam Toxicity and Effects on Consumption Behavior in Orius insidiosus (Hemiptera: Anthocoridae) on Soybean. ENVIRONMENTAL ENTOMOLOGY 2017; 46:693-699. [PMID: 28369319 DOI: 10.1093/ee/nvx050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Indexed: 06/07/2023]
Abstract
Neonicotinoid residues can be present in soybean vegetative tissue, prey insects, and flower tissues, possibly making them toxic to pollinators and natural enemies. Baseline information on the toxicity of neonicotinoids to beneficial insects other than pollinators through multiple routes of insecticide exposure is limited. The objectives of this study were 1) to evaluate the toxicity of thiamethoxam to the hemipteran predator, Orius insidiosus Say, exposed to residues through treated vegetative tissue and insect prey, and 2) to evaluate the effect of thiamethoxam on the abundance of this predator species in soybean fields. Predators were exposed to thiamethoxam in soybean leaves and Aphis glycines Matsumura using a systemic bioassay. Abundance of the predator was evaluated in thiamethoxam seed-treated fields during two different soybean seasons. Our results indicate that concentrations required to kill >50% of the evaluated insects were higher than the concentrations that the insects are likely to encounter in the field. Consumption of A. glycines by O. insidiosus was affected at 10 ng/ml and 5 ng/ml of thiamethoxam at 24 h of evaluation. There was significant mortality for O. insidiosus at 24 h after exposure to thiamethoxam-treated aphids at these concentrations. In soybean fields, there were no significant differences in O. insidiosus number between the plots treated with thiamethoxam and the control. Thiamethoxam may have significant effects on the predators if O. insidiosus feeds on early soybean vegetative tissue or contaminated prey. These results suggest that the compatibility of thiamethoxam with IPM programs for A. glycines needs further evaluation.
Collapse
Affiliation(s)
- Carolina Camargo
- Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611 (; )
| | - Thomas E Hunt
- Department of Entomology, University of Nebraska-Lincoln, Haskell Agricultural Laboratory, Concord, NE 68728
| | - Loren J Giesler
- Department of Plant Pathology, University of Nebraska-Lincoln, Plant Sciences hall Lincoln, NE 68583
| | - Blair D Siegfried
- Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611 (; )
| |
Collapse
|
73
|
Xiao D, Tan X, Wang W, Zhang F, Desneux N, Wang S. Modification of Flight and Locomotion Performances, Respiratory Metabolism, and Transcriptome Expression in the Lady Beetle Harmonia axyridis through Sublethal Pesticide Exposure. Front Physiol 2017; 8:33. [PMID: 28239355 PMCID: PMC5300995 DOI: 10.3389/fphys.2017.00033] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/12/2017] [Indexed: 01/20/2023] Open
Abstract
Biological control is usually used in combination with chemical control for practical agricultural applications. Thus, the influence of insecticides on the natural predators used for biological control should be investigated for integrated pest management. The ladybird Harmonia axyridis is an effective predator on aphids and coccids. Beta-cypermethrin is a broad-spectrum insecticide used worldwide for controlling insect pests. H. axyridis is becoming increasingly threatened by this insecticide. Here, we investigated the effect of a sublethal dose of beta-cypermethrin on flight, locomotion, respiration, and detoxification system of H. axyridis. After exposure to beta-cypermethrin, succinic female adults flew more times, longer distances, and during longer time periods. Exposure to a sublethal dose of beta-cypermethrin also promoted an increase in walking rate, walking distance, walking duration, and also an increase in respiratory quotient and respiratory rate. To investigate the effects of beta-cypermethrin on H. axyridis detoxification system, we analyzed the transcriptome of H. axyridis adults, focusing on genes related to detoxification systems. De novo assembly generated 65,509 unigenes with a mean length of 799 bp. From these genes, 26,020 unigenes (40.91% of all unigenes) exhibited clear homology to known genes in the NCBI non-redundant database. In addition, 10,402 unigenes were annotated in the Cluster of Orthologous Groups database, 12,088 unigenes were assigned to the Gene Ontology database and 12,269 unigenes were in the Kyoto Encyclopedia of Genes and Genome (KEGG) database. Exposure to beta-cypermethrin had significant effects on the transcriptome profile of H. axyridis adult. Based on uniquely mapped reads, 3,296 unigenes were differentially expressed, 868 unigenes were up-regulated and 2,248 unigenes were down-regulated. We identified differentially-expressed unigenes related to general detoxification systems in H. axyridis. This assembled, annotated transcriptome provides a valuable genomic resource for further understanding the molecular basis of detoxification mechanisms in H. axyridis.
Collapse
Affiliation(s)
- Da Xiao
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences Beijing, China
| | - Xiaoling Tan
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry SciencesBeijing, China; Institute of Plant Protection, Chinese Academy of Plant ProtectionBeijing, China
| | - Wenjuan Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences Beijing, China
| | - Fan Zhang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences Beijing, China
| | - Nicolas Desneux
- Institut National de la Recherche Agronomique (French National Institute for Agricultural Research), Univ. Nice Sophia Antipolis, Centre National de la Recherche Scientifique, UMR 1355-7254 Institute Sophia Agrobiotech Nice, France
| | - Su Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences Beijing, China
| |
Collapse
|
74
|
Badshah H, Ullah F, Calatayud PA, Ullah H, Ahmad B. Can toxicants used against cotton mealybug Phenacoccus solenopsis be compatible with an encyrtid parasitoid Aenasius bambawalei under laboratory conditions? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:5857-5867. [PMID: 28063085 DOI: 10.1007/s11356-016-8293-6] [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: 05/10/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
The cotton mealybug, Phenacoccus solenopsis Tinsley (Sternorrhyncha: Pseudococcidae) is a serious pest of various cultivated plants in Pakistan. Recent reports show that the parasitoid Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) is a good biocontrol agent of the pest. Compatibleness is important in any IPM programme, and the insecticide used must have little or no effects on the biological control agent. This study investigated the compatibility of neem treatments and a commercial insecticide, imidacloprid on A. bambawalei. Bioassays were laid out in a completely randomized design (CRD) under laboratory conditions. Results showed that the adult stage of the parasitoid was more susceptible to the commercial insecticide imidacloprid than the concealed pupal stage. Moreover, on the basis of the International Organization for Biological Control (IOBC) toxicity categories of the commercial insecticide, imidacloprid was moderately toxic throughout the study period (Ex >80%) while neem was slightly toxic after 24 h of use (Ex <80%). Results also suggest that A. bambawalei release should be delayed for at least 1 week after neem treatments. Because imidacloprid destroys A. bambawalei, it might cause resurgence of P. solenopsis; thus, farmers should avoid integrating the insecticide in the control of P. solenopsis.
Collapse
Affiliation(s)
- Hayat Badshah
- Entomology Section, Agricultural Research Institute Tarnab, Peshawar, Pakistan.
| | - Farman Ullah
- Department of Plant Protection, The University of Agriculture, Peshawar, Pakistan
| | - Paul Andre Calatayud
- UMR EGCE (Evolution, Génome, Comportement, Ecologie), CNRS-IRD-University. Paris-Sud, IDEEV, Université Paris-Saclay, Gif-sur-Yvette, France
- International Centre of Insect Physiology and Ecology (icipe), P.O. Box 30772-00100, Nairobi, Kenya
| | - Hidayat Ullah
- Department of Agriculture, University of Swabi, Khyber Pakhtunkhwa, Pakistan
| | - Bashir Ahmad
- Department of Plant Protection, The University of Agriculture, Peshawar, Pakistan
| |
Collapse
|
75
|
Xiao D, Zhao J, Guo X, Chen H, Qu M, Zhai W, Desneux N, Biondi A, Zhang F, Wang S. Sublethal effects of imidacloprid on the predatory seven-spot ladybird beetle Coccinella septempunctata. ECOTOXICOLOGY (LONDON, ENGLAND) 2016; 25:1782-1793. [PMID: 27670666 DOI: 10.1007/s10646-016-1721-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/30/2016] [Indexed: 06/06/2023]
Abstract
The seven-spot ladybird beetle, Coccinella septempunctata, is a major natural enemy of aphids in the field and in greenhouses in China and is part of integrated pest management (IPM). Imidacloprid, a highly efficient insecticide that not only kills aphids at lethal concentrations, but also can cause various sublethal effects in nontarget organisms. To strengthen IPM and its sustainability, it is important assessing possible side effects on natural enemies. When the effects of sublethal concentrations (LC5 and 10%LC5) of imidacloprid on C. septempunctata were evaluated, the adult longevity was shortened by 23.97 and 28.68 %, and the fecundity reduced by 52.81 and 56.09 % compared to control population. In the F1 generation (i.e., the progeny of the exposed individuals), the juvenile development was slower by 1.44 days and 0.66 days, and the oviposition period was shortened by 10 and 13 days, respectively. The fecundity of the F1 generation decreased by 17.88, 44.03 and 51.69 % when exposed to 1%LC5, 10%LC5, and LC5, respectively. The results of demographical growth estimates showed that the intrinsic rate of increase (r m ) and net reproductive rate (R 0 ) were lower in C. septempunctata populations that had been exposed to sublethal concentrations of imidacloprid. The results emphasize the importance of assessing side effects of low imidacloprid concentrations on such predator species, even at the transgenerational level.
Collapse
Affiliation(s)
- Da Xiao
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forest Science, Beijing, 100097, China
| | - Jing Zhao
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forest Science, Beijing, 100097, China
| | - Xiaojun Guo
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forest Science, Beijing, 100097, China
| | - Hongying Chen
- Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing, 100125, China
| | - Mengmeng Qu
- Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing, 100125, China
| | - Weigang Zhai
- Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing, 100125, China
| | - Nicolas Desneux
- INRA (French National Institute for Agricultural Research), UMR 1355-7254 Institut Sophia Agrobiotech, Univ. Nice Sophia Antipolis, CNRS, 400 Route des Chappes, Sophia-Antipolis, 06903, France
| | - Antonio Biondi
- University of Catania, Department of Agriculture, Food and Environment, via Santa Sofia 100, Catania, 95123, Italy
| | - Fan Zhang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forest Science, Beijing, 100097, China
| | - Su Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forest Science, Beijing, 100097, China.
| |
Collapse
|
76
|
Gao LR, Li S, Zhang J, Liang C, Chen EN, Zhang SY, Chuai M, Bao YP, Wang G, Yang X. Excess Imidacloprid Exposure Causes the Heart Tube Malformation of Chick Embryos. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:9078-9088. [PMID: 27792329 DOI: 10.1021/acs.jafc.6b03381] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
As a neonicotinoid pesticide, imidacloprid is widely used to control sucking insects on agricultural planting and fleas on domestic animals. However, the extent to which imidacloprid exposure has an influence on cardiogensis in early embryogenesis is still poorly understood. In vertebrates, the heart is the first organ to be formed. In this study, to address whether imidacloprid exposure affects early heart development, the early chick embryo has been used as an experimental model because of its accessibility at its early developmental stage. The results demonstrate that exposure of the early chick embryo to imidacloprid caused malformation of heart tube. Furthermore, the data reveal that down-regulation of GATA4, NKX2.5, and BMP4 and up-regulation of Wnt3a led to aberrant cardiomyocyte differentiation. In addition, imidacloprid exposure interfered with basement membrane breakdown, E-cadherin/laminin expression, and mesoderm formation during the epithelial-mesenchymal transition (EMT) in gastrula chick embryos. Finally, the DiI-labeled cell migration trajectory indicated that imidacloprid restricted the cell migration of cardiac progenitors to primary heart field in gastrula chick embryos. A similar observation was also obtained from the cell migration assay of scratch wounds in vitro. Additionally, imidacloprid exposure negatively affected the cytoskeleton structure and expression of corresponding adhesion molecules. Taken together, these results reveal that the improper EMT, cardiac progenitor migration, and differentiation are responsible for imidacloprid exposure-induced malformation of heart tube during chick embryo development.
Collapse
Affiliation(s)
- Lin-Rui Gao
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Shuai Li
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Jing Zhang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Chang Liang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - En-Ni Chen
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Shi-Yao Zhang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Manli Chuai
- Division of Cell and Developmental Biology, University of Dundee , Dundee DD1 5EH, U.K
| | - Yong-Ping Bao
- Norwich Medical School, University of East Anglia , Norwich, Norfolk NR4 7UQ, U.K
| | - Guang Wang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Xuesong Yang
- Division of Histology and Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| |
Collapse
|
77
|
Liu M, Wang G, Zhang SY, Zhong S, Qi GL, Wang CJ, Chuai M, Lee KKH, Lu DX, Yang X. From the Cover: Exposing Imidacloprid Interferes With Neurogenesis Through Impacting on Chick Neural Tube Cell Survival. Toxicol Sci 2016; 153:137-148. [DOI: 10.1093/toxsci/kfw111] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
78
|
Fernandes MES, Alves FM, Pereira RC, Aquino LA, Fernandes FL, Zanuncio JC. Lethal and sublethal effects of seven insecticides on three beneficial insects in laboratory assays and field trials. CHEMOSPHERE 2016; 156:45-55. [PMID: 27160634 DOI: 10.1016/j.chemosphere.2016.04.115] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/26/2016] [Accepted: 04/26/2016] [Indexed: 06/05/2023]
Abstract
Lethal and sublethal effects of insecticides on target and non-target arthropods are a concern of pest management programs. Cycloneda sanguinea, Orius insidiosus and Chauliognathus flavipes are important biological control agents for aphids, whitefly, lepidopterus eggs, thrips and mites. All three test species were subjected to a toxicity study using the insecticides acephate, bifenthrin, chlorantraniliprole, chlorpyrifos, deltamethrin, imidacloprid, and thiamethoxam. Experiments were done in the lab and field. In the laboratory we evaluated the mortality and sublethal effects of the concentration that killed 20% of the population (LC20) on feeding, repellence and reproduction of the species tested. The lethal effects of these insecticides at the recommended doses was evaluated in the field. Concentration-response bioassays indicated chlorantraniliprole had the lowest toxicity, while chlorpyrifos and acephate were the most toxic. Test species exposed to filter paper surfaces treated with pyrethroids, neonicotinoids and organophosphates were repelled. On the other hand, test species were not repelled from surfaces treated with chlorantraniliprole. Chlorantraniliprole therefore seemed to be the least dangerous insecticide for these three beneficial arthropod test species.
Collapse
Affiliation(s)
- Maria E S Fernandes
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Instituto de Ciências Agrárias, Rio Paranaíba, MG 38810-000, Brazil
| | - Flávia M Alves
- Universidade Federal de Viçosa, Campus Viçosa, Departamento de Fitotecnia, Viçosa, MG 36570-000, Brazil
| | - Renata C Pereira
- Universidade Federal de Viçosa, Campus Viçosa, Agroecologia, Viçosa, MG 36570-000, Brazil
| | - Leonardo A Aquino
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Instituto de Ciências Agrárias, Rio Paranaíba, MG 38810-000, Brazil
| | - Flávio L Fernandes
- Universidade Federal de Viçosa, Campus Rio Paranaíba, Instituto de Ciências Agrárias, Rio Paranaíba, MG 38810-000, Brazil.
| | - José C Zanuncio
- Universidade Federal de Viçosa, Campus Viçosa, Departamento de Entomologia, Viçosa, MG 36570-000, Brazil
| |
Collapse
|
79
|
Fogel MN, Schneider MI, Rimoldi F, Ladux LS, Desneux N, Ronco AE. Toxicity assessment of four insecticides with different modes of action on pupae and adults of Eriopis connexa (Coleoptera: Coccinellidae), a relevant predator of the Neotropical Region. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:14918-14926. [PMID: 27074926 DOI: 10.1007/s11356-016-6654-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 04/05/2016] [Indexed: 06/05/2023]
Abstract
Pesticides can be toxic to nontarget organisms including the natural enemies of agricultural pests, thus reducing the biodiversity of agroecosystems. The lethal and sublethal effects of four insecticides with different modes of action-pyriproxyfen, teflubenzuron, acetamiprid, and cypermethrin-were evaluated on pupae and adults of Eriopis connexa, an effective predator in horticultural crops. Pupal survival was reduced by pyriproxyfen (26 %) and cypermethrin (41 %). Malformations in adults emerged from treated pupae were observed after acetamiprid (82.7 and 100 % for 100 and 200 mg a.i./l, respectively), pyriproxyfen (48.6 %), and cypermethrin (13.3 %) treatments. A longer mean oviposition time was also observed in adults emerged from pupae treated with cypermethrin. Moreover, the latter insecticide as well as teflubenzuron did not reduce reproductive parameters, whereas females emerged from pyriproxyfen-treated pupae were not be able to lay eggs even when females showed large abdomens. Upon exposure of adults, survival was reduced to approximately 90 % by acetamiprid, but no reduction occurred with pyriproxyfen, teflubenzuron, or cypermethrin though the fecundity at fifth oviposition time of the female survivors was reduced. Pyriproxyfen decreased the hatching at all the oviposition times tested, whereas fertility was reduced in the fourth and fifth ovipositions by teflubenzuron and in the first and third ovipositions by cypermethrin. In conclusion, all four insecticides tested exhibited lethal or sublethal effects, or both, on E. connexa. The neurotoxic insecticides were more harmful than the insect-growth regulators, and pupae were more susceptible than adults. The toxicity of insecticides on the conservation of predators in agroecosystems of the Neotropical Region is discussed.
Collapse
Affiliation(s)
- Marilina Noelia Fogel
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, Universidad Nacional de La Plata), Boulevard 120 s/n entre 61 y 64, 1900, La Plata, Buenos Aires, Argentina
- Centro de Investigaciones del Medio Ambiente (CIMA), Facultad de Ciencias Exactas, CONICET, Universidad Nacional de La Plata, Calle 47 y 115, 1900, La Plata, Buenos Aires, Argentina
| | - Marcela Inés Schneider
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, Universidad Nacional de La Plata), Boulevard 120 s/n entre 61 y 64, 1900, La Plata, Buenos Aires, Argentina.
- Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Calle 60 y 122 s/n, 1900, La Plata, Buenos Aires, Argentina.
| | - Federico Rimoldi
- Centro de Investigaciones del Medio Ambiente (CIMA), Facultad de Ciencias Exactas, CONICET, Universidad Nacional de La Plata, Calle 47 y 115, 1900, La Plata, Buenos Aires, Argentina
| | - Lorena Sabrina Ladux
- Laboratorio de Ecotoxicología: Plaguicidas y Control Biológico, Centro de Estudios Parasitológicos y de Vectores (CEPAVE-CONICET, Universidad Nacional de La Plata), Boulevard 120 s/n entre 61 y 64, 1900, La Plata, Buenos Aires, Argentina
| | - Nicolas Desneux
- French National Institute for Agricultural Research (INRA), UMR-ISA, 400 Route des Chappes, 06903, Sophia-Antipolis, France
| | - Alicia Estela Ronco
- Centro de Investigaciones del Medio Ambiente (CIMA), Facultad de Ciencias Exactas, CONICET, Universidad Nacional de La Plata, Calle 47 y 115, 1900, La Plata, Buenos Aires, Argentina
| |
Collapse
|
80
|
Tan X, Hu N, Zhang F, Ramirez-Romero R, Desneux N, Wang S, Ge F. Mixed release of two parasitoids and a polyphagous ladybird as a potential strategy to control the tobacco whitefly Bemisia tabaci. Sci Rep 2016; 6:28245. [PMID: 27312174 PMCID: PMC4911563 DOI: 10.1038/srep28245] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 06/01/2016] [Indexed: 11/21/2022] Open
Abstract
A mixed species release of parasitoids is used to suppress outbreaks of tobacco whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae); however, this biocontrol may be inhibited by interspecific interactions. We investigated the effects of mixed releases of natural enemies of B. tabaci on predation rates, parasite performance and adult parasitoid emergence under greenhouse conditions. We tested the polyphagous predatory ladybird Harmonia axyridis (Coleoptera: Coccinellidae) and two whitefly-specific parasitoids, namely Encarsia formosa and Encarsia sophia (both, Hymenoptera: Aphelinidae). Harmonia axyridis exhibited the lowest rates of predation when released with each parasitoid than with both parasitoid species together and showed a significant preference for non-parasitized nymphs as prey. Both E. formosa and E. sophia parasitized more B. tabaci when released with the ladybird than when the wasps were released either alone or mixed with the other parasitoid. We also found that the presence of H. axyridis significantly reduced adult parasitoid emergence; the highest rate of adult emergence was obtained with parasitoids released alone. Our results indicate that different combinations of natural enemies can influence observed rates of predation, parasitism, and parasitoid emergence. Therefore, the combination of natural enemies to be used for a particular biological control program should depend on the specific objectives.
Collapse
Affiliation(s)
- Xiaoling Tan
- State Key Laboratory of Integrated management of Pest Insects and Rodents, Institute of zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute of Plant & Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Nana Hu
- State Key Laboratory of Integrated management of Pest Insects and Rodents, Institute of zoology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Plant Protection, Guizhou University, Guiyang, 550025, China
| | - Fan Zhang
- State Key Laboratory of Integrated management of Pest Insects and Rodents, Institute of zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Ricardo Ramirez-Romero
- Departamento de Producción Agrícola, CUCBA, Universidad de Guadalajara, Zapopan, 45100, Jalisco, México
| | - Nicolas Desneux
- French National Institute for Agricultural Research (INRA), Univ. Nice Sophia Antipolis, CNRS, UMR 1355-7254, Institut Sophia Agrobiotech, 06903 Sophia Antipolis, France
| | - Su Wang
- State Key Laboratory of Integrated management of Pest Insects and Rodents, Institute of zoology, Chinese Academy of Sciences, Beijing 100101, China
| | - Feng Ge
- State Key Laboratory of Integrated management of Pest Insects and Rodents, Institute of zoology, Chinese Academy of Sciences, Beijing 100101, China
| |
Collapse
|
81
|
Wang CJ, Wang G, Wang XY, Liu M, Chuai M, Lee KKH, He XS, Lu DX, Yang X. Imidacloprid Exposure Suppresses Neural Crest Cells Generation during Early Chick Embryo Development. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:4705-15. [PMID: 27195532 DOI: 10.1021/acs.jafc.6b01478] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Imidacloprid is a neonicotinoid pesticide that is widely used in the control pests found on crops and fleas on pets. However, it is still unclear whether imidacloprid exposure could affect early embryo development-despite some studies having been conducted on the gametes. In this study, we demonstrated that imidacloprid exposure could lead to abnormal craniofacial osteogenesis in the developing chick embryo. Cranial neural crest cells (NCCs) are the progenitor cells of the chick cranial skull. We found that the imidacloprid exposure retards the development of gastrulating chick embryos. HNK-1, PAX7, and Ap-2α immunohistological stainings indicated that cranial NCCs generation was inhibited after imidacloprid exposure. Double immunofluorescent staining (Ap-2α and PHIS3 or PAX7 and c-Caspase3) revealed that imidacloprid exposure inhibited both NCC proliferation and apoptosis. In addition, it inhibited NCCs production by repressing Msx1 and BMP4 expression in the developing neural tube and by altering expression of EMT-related adhesion molecules (Cad6B, E-Cadherin, and N-cadherin) in the developing neural crests. We also determined that imidacloprid exposure suppressed cranial NCCs migration and their ability to differentiate. In sum, we have provided experimental evidence that imidacloprid exposure during embryogenesis disrupts NCCs development, which in turn causes defective cranial bone development.
Collapse
Affiliation(s)
- Chao-Jie Wang
- Division of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Guang Wang
- Division of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Xiao-Yu Wang
- Division of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Meng Liu
- Division of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| | - Manli Chuai
- Division of Cell and Developmental Biology, University of Dundee , Dundee, DD1 5EH, U.K
| | - Kenneth Ka Ho Lee
- Key Laboratory for Regenerative Medicine of the Ministry of Education, School of Biomedical Sciences, Chinese University of Hong Kong , Shatin, Hong Kong
| | - Xiao-Song He
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences , Beijing 100012, China
| | - Da-Xiang Lu
- Division of Pathophysiology, Medical College, Jinan University , Guangzhou 510632, China
| | - Xuesong Yang
- Division of Histology & Embryology, Key Laboratory for Regenerative Medicine of the Ministry of Education, Medical College, Jinan University , Guangzhou 510632, China
| |
Collapse
|
82
|
Wanumen AC, Sánchez-Ramos I, Viñuela E, Medina P, Adán Á. Impact of Feeding on Contaminated Prey on the Life Parameters of Nesidiocoris Tenuis (Hemiptera: Miridae) Adults. JOURNAL OF INSECT SCIENCE (ONLINE) 2016; 16:iew084. [PMID: 27694345 PMCID: PMC5043474 DOI: 10.1093/jisesa/iew084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 08/14/2016] [Indexed: 04/30/2023]
Abstract
Insecticide selectivity to natural enemies is an important concern in integrated pest management programs. Although there is a wide range of information concerning pesticide lethal and sublethal effects on contaminated surfaces, little is known when the route of exposure occurs at a trophic level. This study evaluates this route of pesticide intake on the omnivorous predator Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) for the first time. Under laboratory conditions, prey treated with six insecticides (flubendiamide, spirotetramat, deltamethrin, flonicamid, metaflumizone, and sulfoxaflor) were offered to N. tenuis adults for 3 days. Mortality (24, 48, and 72 h after treatment), offspring production (third until eighth day) and longevity were documented. Metaflumizone and sulfoxaflor were classified as moderately harmful products because although the percentage of mortality was only 28 and 36%, respectively, both products caused a severe decrease in offspring production and longevity. Flonicamid and flubendiamide were classified as slightly harmful products; although they did not have a lethal effect, sublethal impact was important on the parameters studied. Spirotetramat and deltamethrin were insecticides categorized as harmless. This information could be useful for selecting the most appropriate insecticides to control pests in tomato crops in which N. tenuis is a relevant biological control agent.
Collapse
Affiliation(s)
- Andrea Carolina Wanumen
- Crop Protection Unit, School of Agricultural Sciences (ETSIA), Technical University of Madrid (UPM), Avenida Complutense s/n, Madrid, 28040, Spain
| | - Ismael Sánchez-Ramos
- Entomology Group, Plant Protection Department, National Institute for Agricultural and Food Research and Technology (INIA), Carretera de La Coruña Km 7.5, Madrid, 28040, Spain
| | - Elisa Viñuela
- Crop Protection Unit, School of Agricultural Sciences (ETSIA), Technical University of Madrid (UPM), Avenida Complutense s/n, Madrid, 28040, Spain
| | - Pilar Medina
- Crop Protection Unit, School of Agricultural Sciences (ETSIA), Technical University of Madrid (UPM), Avenida Complutense s/n, Madrid, 28040, Spain
| | - Ángeles Adán
- Crop Protection Unit, School of Agricultural Sciences (ETSIA), Technical University of Madrid (UPM), Avenida Complutense s/n, Madrid, 28040, Spain
| |
Collapse
|
83
|
Martinou AF, Stavrinides MC. Effects of Sublethal Concentrations of Insecticides on the Functional Response of Two Mirid Generalist Predators. PLoS One 2015; 10:e0144413. [PMID: 26641652 PMCID: PMC4671552 DOI: 10.1371/journal.pone.0144413] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/16/2015] [Indexed: 11/19/2022] Open
Abstract
The use of agrochemicals particularly pesticides, can hamper the effectiveness of natural enemies, causing disruption in the ecosystem service of biological control. In the current study, the effects of the insecticides thiacloprid and chlorantraniliprole on the functional response curves were assessed for two mirid predator nymphs, Macrolophus pygmaeus Rambur and Nesidiocoris tenuis Reuter. In the absence of insecticides, both predators exhibited a type II functional response when feeding on eggs of the moth Ephestia kuehniella. N. tenuis seems to be a more efficient predator than M. pygmaeus, as model estimated handling time was significantly lower for the former than for the latter. Residual exposure of M. pygmaeus to sublethal concentrations of either insecticide was associated with a change in the asymptote but not the type of the functional response curve. Thiacloprid seems to be the least compatible with M. pygmaeus, as it led to both a significant reduction of the attack rate and an increase in handling time. In contrast, chlorantraniliprole exposure significantly increased the handling time, but not the attack rate of the predator. Residual exposure of N. tenuis to sublethal concentrations of either insecticide did not have a significant effect on the type nor the parameters of the functional response model. The results show that pesticide residues that do not have lethal effects on beneficial arthropods can reduce prey consumption depending on predator species and on likely risks associated with toxicity.
Collapse
Affiliation(s)
- Angeliki F. Martinou
- Department of Agricultural Sciences, Biotechnology, and Food Science, Cyprus University of Technology, Arch. Kyprianos 30, Limassol, 3036, Cyprus
| | - Menelaos C. Stavrinides
- Department of Agricultural Sciences, Biotechnology, and Food Science, Cyprus University of Technology, Arch. Kyprianos 30, Limassol, 3036, Cyprus
- * E-mail:
| |
Collapse
|
84
|
Rugno GR, Zanardi OZ, Yamamoto PT. Are the Pupae and Eggs of the Lacewing Ceraeochrysa cubana (Neuroptera: Chrysopidae) Tolerant to Insecticides? JOURNAL OF ECONOMIC ENTOMOLOGY 2015; 108:2630-2639. [PMID: 26340225 DOI: 10.1093/jee/tov263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 08/18/2015] [Indexed: 06/05/2023]
Abstract
The tolerance of Ceraeochrysa cubana (Hagen) pupae and eggs to 11 insecticides was evaluated under laboratory conditions, based on lethal and sublethal effects. Eggs at three ages (≤24-h-old, 48- to 72-h-old, and 96- to 120-h-old) and pupae at ≤48-h-old were used. All the insecticides were considered harmless when applied at the pupal stage. Phosmet and pyriproxyfen insecticides were considered harmless to eggs irrespective of the age. Esfenvalerate was harmless to eggs at the ages of ≤24-h-old and 48- to 72-h-old. Imidacloprid SC and azadirachtin were harmless to eggs at ages of 48- to 72-h-old and 96- to 120-h-old, and thiamethoxam was only harmless to eggs at 96- to 120-h-old of age. In contrast, chlorpyrifos and malathion were harmful to eggs at the age of 96- to 120-h-old, and imidacloprid WG was slightly harmful to the three egg ages evaluated. Lambda-cyhalothrin + chlorantraniliprole and lambda-cyhalothrin + thiamethoxam were slightly and/or moderately harmful to all egg ages evaluated. Based on the life table parameters, the insecticides thiamethoxam, imidacloprid SC, phosmet, pyriproxyfen, and azadirachtin did not affect the net rate of reproduction (Ro) of C. cubana. Lambda-cyhalothrin + chlorantraniliprole decreased the Ro and increased the population doubling time (Td) independently of the egg ages evaluated. Therefore, the insecticides pyriproxyfen and phosmet are compatible with eggs of the predator C. cubana, but other insecticides should be evaluated under field conditions to verify their effects on the predator.
Collapse
Affiliation(s)
- Gabriel Rodrigo Rugno
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture/University of São Paulo (ESALQ/USP), Av. Pádua Dias 11, Piracicaba, São Paulo 13418-900, Brazil.
| | - Odimar Zanuzo Zanardi
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture/University of São Paulo (ESALQ/USP), Av. Pádua Dias 11, Piracicaba, São Paulo 13418-900, Brazil
| | - Pedro Takao Yamamoto
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture/University of São Paulo (ESALQ/USP), Av. Pádua Dias 11, Piracicaba, São Paulo 13418-900, Brazil
| |
Collapse
|
85
|
Gulzar A, Wright DJ. Sub-lethal effects of Vip3A toxin on survival, development and fecundity of Heliothis virescens and Plutella xylostella. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:1815-1822. [PMID: 26162322 DOI: 10.1007/s10646-015-1517-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/29/2015] [Indexed: 06/04/2023]
Abstract
The assessment of sub-lethal effects is important to interpret the overall insecticide efficacy in controlling insect pest populations. In addition to the lethal effect, sub-lethal effects may also occur in exposed insects. Vegetative insecticidal proteins (Vips) have shown a broad spectrum of insecticidal activity against many insect pest species. In this study the sub-lethal effects of the Bacillus thuringiensis vegetative insecticidal toxin Vip3A on the development and reproduction of Heliothis virescens F. and Plutella xylostella L. were evaluated in the laboratory. The results indicated that the sub-lethal concentration of Vip3A increased the duration of the larval and pupal stages as compared with the control treatment for both species. The percent pupation and percent adult emergence were significantly lower for Vip3A-treated insects. The proportion of pairs that produced eggs and the longevity of adults were not significantly different between treatments. H. virescens and P. xylostella treated with Vip3A showed an 11 and 17 % decrease in their intrinsic rate of increase (rm) respectively compared with untreated insects. The results from this study will be helpful to develop the strategy to incorporate Vip 3A containing crops in an integrated pest management programme.
Collapse
Affiliation(s)
- Asim Gulzar
- Department of Entomology, PMAS-AAU Rawalpindi, Muree Road, Rawalpindi, Pakistan.
- Department of Life Sciences, Imperial College London, Silwood Park campus, Ascot, Berks, SL5 7PY, UK.
| | - Denis J Wright
- Department of Life Sciences, Imperial College London, Silwood Park campus, Ascot, Berks, SL5 7PY, UK
| |
Collapse
|
86
|
Malagnoux L, Capowiez Y, Rault M. Impact of insecticide exposure on the predation activity of the European earwig Forficula auricularia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:14116-26. [PMID: 25963069 DOI: 10.1007/s11356-015-4520-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 04/09/2015] [Indexed: 05/27/2023]
Abstract
The European earwig Forficula auricularia is an effective predator in apple orchards. It is therefore crucial to study whether insecticides affect this natural pest control agent. Predation activity, i.e., the number of aphids eaten in 24 h, was determined under laboratory conditions after exposure of fourth-instar nymphs and adult earwigs to widely used insecticides (acetamiprid, chlorpyrifos-ethyl, deltamethrin, and spinosad), which were applied at the normal application rates. Inhibition of acetylcholinesterase and carboxylesterase activities were also measured as indicators of pesticide exposure. Predation activity decreased significantly in nymphs exposed to spinosad (62%) and chlorpyrifos-ethyl (98%) compared with controls. A similar response was found for both esterase activities. Spinosad had a stronger effect on AChE (-33%) whereas chlorpyrifos-ethyl affected CbE activity preferentially (-59%). Spinosad (20% of controls), acetamiprid (28%), and chlorpyrifos-ethyl (66%) also significantly decreased the predation behavior of adult male but not female (5 to 40%) earwigs. Adult AChE and CbE activities were also significantly reduced (28 to 67% of controls) in pesticide-exposed earwigs. Our results suggest that earwigs should be included in the environmental risk assessment framework for authorization of newly marketed plant protection products. Their predation behavior appears to be a sensitive and complementary biomarker.
Collapse
Affiliation(s)
- Laure Malagnoux
- Institut Méditerranéen de Biodiversité et d'Ecologie (IMBE), Université d'Avignon et des Pays de Vaucluse UMR 7263 CNRS-IRD, 301 rue Baruch de Spinoza, BP21239, F-84916, Avignon Cedex 09, France
| | | | | |
Collapse
|
87
|
Thompson HM, Wilkins S, Harkin S, Milner S, Walters KFA. Neonicotinoids and bumblebees (Bombus terrestris): effects on nectar consumption in individual workers. PEST MANAGEMENT SCIENCE 2015; 71:946-950. [PMID: 25132051 DOI: 10.1002/ps.3868] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/05/2014] [Accepted: 07/23/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND The objective of this study was to quantify whether the presence of three different neonicotinoid insecticides (imidacloprid, thiamethoxam or clothianidin) in sucrose solution results in antifeedant effects in individual worker bumblebees (Bombus terrestris), and, if so, whether this effect is reversible if bees are subsequently offered untreated feed. RESULTS Bees exposed to imidacloprid displayed a significant dose-dependent reduction in consumption at 10 and 100 µg L(-1), which was reversed when untreated feed was offered. No consistent avoidance/antifeedant response to nectar substitute with thiamethoxam was detected at the more field-realistic dose rates of 1 and 10 µg L(-1), and exposure to the very high 100 µg L(-1) dose rate was followed by 100% mortality of experimental insects. No reduction in food intake was recorded at 1 µg clothianidin L(-1), reduced consumption was noted at 10 µg clothianidin L(-1) and 100% mortality occurred when bees were exposed to rates of 100 µg clothianidin L(-1). CONCLUSION This study provides evidence of a direct antifeedant effect of imidacloprid and clothianidin in individual bumblebees but highlights that this may be a compound-specific effect.
Collapse
Affiliation(s)
| | - Selwyn Wilkins
- Food and Environment Research Agency, Sand Hutton, York, UK
| | - Sarah Harkin
- Food and Environment Research Agency, Sand Hutton, York, UK
| | - Sarah Milner
- Food and Environment Research Agency, Sand Hutton, York, UK
| | - Keith F A Walters
- Centre for Environmental Policy, Imperial College London, Ascot, Berks, UK
| |
Collapse
|
88
|
Moscardini VF, Gontijo PC, Michaud JP, Carvalho GA. Sublethal effects of insecticide seed treatments on two nearctic lady beetles (Coleoptera: Coccinellidae). ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:1152-1161. [PMID: 25902962 DOI: 10.1007/s10646-015-1462-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/17/2015] [Indexed: 06/04/2023]
Abstract
Predatory insects often feed on plants or use plant products to supplement their diet, creating a potential route of exposure to systemic insecticides used as seed treatments. This study examined whether chlorantraniliprole or thiamethoxam might negatively impact Coleomegilla maculata and Hippodamia convergens when the beetles consumed the extrafloral nectar of sunflowers grown from treated seed. We reared both species on eggs of Ephestia kuehniella and then switched adult H. convergens to a diet of greenbugs, Schizaphis graminum, in order to induce oviposition in this species. Excised sunflower stems, either treated or control and refreshed every 48 h, were provided throughout larval development, or for the first week of adult life. Exposure of C. maculata larvae to chlorantraniliprole and thiamethoxam applied as seed treatments delayed adult emergence by prolonging the pupal period. When adults were exposed, thiamethoxam reduced the preoviposition period compared to chlorantraniliprole, whereas the latter treatment cause females to produce fewer clutches during the observation period. Larvae of C. maculata did not appear to obtain sufficient hydration from the sunflower stems and their subsequent fecundity and fertility were compromised in comparison to the adult exposure experiment where larvae received supplemental water during development. Exposure of H. convergens larvae to thiamethoxam skewed the sex ratio in favor of females; both materials reduced the egg viability of resulting adults and increased the period required for eclosion. Exposure of H. convergens adults to chlorantraniliprole reduced egg eclosion times compared to thiamethoxam and exposure to both insecticides reduced pupation times in progeny. The results indicate that both insecticides have negative, sublethal impacts on the biology of these predators when they feed on extrafloral nectar of sunflower plants grown from treated seed.
Collapse
|
89
|
Yao FL, Zheng Y, Zhao JW, Desneux N, He YX, Weng QY. Lethal and sublethal effects of thiamethoxam on the whitefly predator Serangium japonicum (Coleoptera: Coccinellidae) through different exposure routes. CHEMOSPHERE 2015; 128:49-55. [PMID: 25655818 DOI: 10.1016/j.chemosphere.2015.01.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/01/2015] [Accepted: 01/03/2015] [Indexed: 06/04/2023]
Abstract
Given expectations for a booming usage of thiamethoxam and increasing availability of the promising biological agent Serangium japonicum for the control of Bemisia tabaci in China, an evaluation of their compatibility is crucial for integrated pest management (IPM). This study examined the lethal and sublethal effects of thiamethoxam on S. japonicum through three exposure routes. An acute toxicity bioassay showed that LC50 values of thiamethoxam for S. japonicum through residue contact, egg-dip, and systemic treatment were 6.65, 4.37, and 2.43 mg AI L(-1), respectively. The prey consumption of S. japonicum given different densities of B. tabaci eggs under control, discontinuous, egg-dip and systemic exposure scenarios showed a good fit to a Type II functional response. Predation of S. japonicum was most affected under systemic exposure, followed by egg-dip, and discontinuous, which was only slightly affected. In all cases tested, however, predators recovered their predation capacity rapidly, either after 24h of exposure or 24h after the end of exposure. Thiamethoxam was highly toxic to S. japonicum regardless of exposure routes. Sublethal effects of thiamethoxam applied systemically or foliar both impaired the biological control of S. japonicum on B. tabaci. Therefore, thiamethoxam should be used with caution in IPM of B. tabaci.
Collapse
Affiliation(s)
- Feng-Luan Yao
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Yu Zheng
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Jian-Wei Zhao
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China
| | - Nicolas Desneux
- French National Institute for Agricultural Research (INRA), 400 Route des Chappes, 06903 Sophia Antipolis, France
| | - Yu-Xian He
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China.
| | - Qi-Yong Weng
- Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, People's Republic of China.
| |
Collapse
|
90
|
Biondi A, Campolo O, Desneux N, Siscaro G, Palmeri V, Zappalà L. Life stage-dependent susceptibility of Aphytis melinus DeBach (Hymenoptera: Aphelinidae) to two pesticides commonly used in citrus orchards. CHEMOSPHERE 2015; 128:142-147. [PMID: 25698292 DOI: 10.1016/j.chemosphere.2015.01.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/11/2015] [Accepted: 01/12/2015] [Indexed: 06/04/2023]
Abstract
The assessment of pesticides compatibility with natural enemies is recommended before including agrochemicals in integrated and organic pest management schemes. The lethal and sublethal effects of a mineral oil and a juvenile hormone mimic (pyriproxyfen), on adults and larvae of Aphytis melinus, a key ectoparasitoid of armored scale insect pests of citrus, such as Aonidiella aurantii, were evaluated. Mineral oil caused very high mortality on the adults, while a lower acute toxicity was recorded on young instars. No significant effects on their reproduction capacity and on the sex-ratio of the progeny were observed. Pyriproxyfen had neither lethal nor sublethal effects (in terms of survived female fertility) on A. melinus adults. However, parasitoid larvae exposed to this insecticide suffered strong acute toxicity and fertility reduction (progeny number and proportion of female progeny). When adults were offered the choice to parasitize treated and untreated scales they significantly preferred the control ones, and when they were exposed to only treated scaled the parasitism rate was significantly lower only with mineral oil-treated hosts. The significant differences in the susceptibility of the two parasitoid instars highlight the importance of including this aspect in pesticide risk assessment procedures and in the choice of the pesticide and of the treatment timing in the field. Overall, the results indicate potential for integrating A. melinus, both naturally present and artificially released, and these insecticides only by appropriate timing of insecticide spraying and parasitoid releases.
Collapse
Affiliation(s)
- Antonio Biondi
- University of Catania, Dipartimento di Agricoltura, Alimentazione e Ambiente, via Santa Sofia 100, 95123 Catania, Italy
| | - Orlando Campolo
- University "Mediterranea" of Reggio Calabria, Dipartimento di AGRARIA, Feo di Vito, 89122 Reggio Calabria, Italy
| | - Nicolas Desneux
- French National Institute for Agricultural Research (INRA), Institut Sophia Agrobiotech, 400 Route des Chappes, 06903 Sophia-Antipolis, France
| | - Gaetano Siscaro
- University of Catania, Dipartimento di Agricoltura, Alimentazione e Ambiente, via Santa Sofia 100, 95123 Catania, Italy
| | - Vincenzo Palmeri
- University "Mediterranea" of Reggio Calabria, Dipartimento di AGRARIA, Feo di Vito, 89122 Reggio Calabria, Italy
| | - Lucia Zappalà
- University of Catania, Dipartimento di Agricoltura, Alimentazione e Ambiente, via Santa Sofia 100, 95123 Catania, Italy.
| |
Collapse
|
91
|
Abd-Ella AA. Effect of several insecticides on pomegranate aphid,Aphis punicae(Passerini) (Homoptera: Aphididae) and its predators under field conditions. ACTA ACUST UNITED AC 2015. [DOI: 10.1111/epp.12192] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. A. Abd-Ella
- Plant Protection Department; Faculty of Agriculture; Assiut University; 71526 Assiut Egypt
| |
Collapse
|
92
|
Qu Y, Xiao D, Li J, Chen Z, Biondi A, Desneux N, Gao X, Song D. Sublethal and hormesis effects of imidacloprid on the soybean aphid Aphis glycines. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:479-487. [PMID: 25492586 DOI: 10.1007/s10646-014-1396-2] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/24/2014] [Indexed: 06/04/2023]
Abstract
The soybean aphid, Aphis glycines Matsumura, is a major pest in soybean crop. Current management of this pest relies mainly on insecticides applications, and the neonicotinoid imidacloprid has been proposed as an effective insecticide to control A. glycines in soybean field. Imidacloprid at lethal concentrations not only exerts acute toxicity to A. glycines, but also cause various biological changes when aphids are chronically exposed to lower concentrations. In this study, we assessed the effects of a low-lethal (0.20 mg L(-1)) and two sublethal (0.05 and 0.10 mg L(-1)) imidacloprid concentrations on various A. glycines life history traits. Aphid exposure to 0.20 mg L(-1) imidacloprid caused slower juvenile development, shorter reproductive period, and reduced adult longevity, fecundity and total lifespan. Stimulatory effects, i.e. hormesis, on reproduction and immature development duration were observed in aphids exposed to the lower sublethal imidacloprid concentrations. Consequently, the net reproduction rate (R 0) was significantly higher than in the control aphids. These findings stress the importance of the actual imidacloprid concentration in its toxicological properties on A. glycines. Therefore, our results would be useful for assessing the overall effects of imidacloprid on A. glycines and for optimizing integrated pest management programs targeting this pest.
Collapse
Affiliation(s)
- Yanyan Qu
- Department of Entomology, China Agricultural University, 2 Yuanmingyuan West Road, Beijing, 100193, China
| | | | | | | | | | | | | | | |
Collapse
|
93
|
Cowles RS, Rodriguez-Saona C, Holdcraft R, Loeb GM, Elsensohn JE, Hesler SP. Sucrose Improves Insecticide Activity Against Drosophila suzukii (Diptera: Drosophilidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2015; 108:640-653. [PMID: 26470175 DOI: 10.1093/jee/tou100] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 12/08/2014] [Indexed: 06/05/2023]
Abstract
The addition of sucrose to insecticides targeting spotted wing drosophila, Drosophila suzukii (Matsumura), enhanced lethality in laboratory, semifield, and field tests. In the laboratory, 0.1% sucrose added to a spray solution enhanced spotted wing drosophila feeding. Flies died 120 min earlier when exposed to spinosad residues at label rates enhanced with sucrose. Added sucrose reduced the LC50 for dried acetamiprid residues from 82 to 41 ppm in the spray solution. Laboratory bioassays of spotted wing drosophila mortality followed exposure to grape and blueberry foliage and/or fruit sprayed and aged in the field. On grape foliage, the addition of 2.4 g/liter of sugar with insecticide sprays resulted in an 11 and 6% increase of spotted wing drosophila mortality at 1 and 2 d exposures to residues, respectively, averaged over seven insecticides with three concentrations. In a separate experiment, spinetoram and cyantraniliprole reduced by 95-100% the larval infestation of blueberries, relative to the untreated control, 7 d after application at labeled rates when applied with 1.2 g/liter sucrose in a spray mixture, irrespective of rainfall; without sucrose infestation was reduced by 46-91%. Adding sugar to the organically acceptable spinosyn, Entrust, reduced larval infestation of strawberries by >50% relative to without sugar for five of the six sample dates during a season-long field trial. In a small-plot field test with blueberries, weekly applications in alternating sprays of sucrose plus reduced-risk insecticides, spinetoram or acetamiprid, reduced larval infestation relative to the untreated control by 76%; alternating bifenthrin and phosmet (without sucrose) reduced infestation by 65%.
Collapse
Affiliation(s)
- Richard S Cowles
- Connecticut Agricultural Experiment Station, Valley Laboratory, 153 Cook Hill Rd., Windsor, CT 06095. Corresponding author, e-mail:
| | - Cesar Rodriguez-Saona
- Rutgers University, Department of Entomology, Philip E. Marucci Blueberry and Cranberry Research Center, 125A Lake Oswego, Chatsworth, NJ 08019
| | - Robert Holdcraft
- Rutgers University, Department of Entomology, Philip E. Marucci Blueberry and Cranberry Research Center, 125A Lake Oswego, Chatsworth, NJ 08019
| | - Gregory M Loeb
- New York State Agricultural Experiment Station, Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14 456
| | - Johanna E Elsensohn
- New York State Agricultural Experiment Station, Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14 456
| | - Steven P Hesler
- New York State Agricultural Experiment Station, Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14 456
| |
Collapse
|
94
|
Gontijo PC, Moscardini VF, Michaud JP, Carvalho GA. Non-target effects of two sunflower seed treatments on Orius insidiosus (Hemiptera: Anthocoridae). PEST MANAGEMENT SCIENCE 2015; 71:515-522. [PMID: 24729352 DOI: 10.1002/ps.3798] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 04/03/2014] [Accepted: 04/04/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Systemic insecticides used as seed treatments are generally considered to be safe for natural enemies. However, predatory insects may feed directly on plants or use plant products to supplement their diet. This study examined whether chlorantraniliprole or thiamethoxam might negatively impact Orius insidiosus (Say) (Hemiptera: Anthocoridae) when bugs utilize sunflowers grown from treated seed. RESULTS When eggs of O. insidiosus were laid in the stems of treated sunflower seedlings (two-leaf stage), thiamethoxam reduced egg viability and the longevity of females hatching from these eggs, whereas chlorantraniliprole reduced female survival. Thiamethoxam, but not chlorantraniliprole, reduced female fertility in six-leaf-stage plants. Nymphs exposed to thiamethoxam-treated seedlings had reduced survival, delayed development and reduced fecundity as adults, relative to other treatments, whereas chlorantraniliprole delayed oviposition. Nymphs exposed to six-leaf-stage plants did not differ from controls in either treatment. Adults exposed to treated plants expressed no significant differences among treatments for any parameter evaluated for either plant growth stage. CONCLUSION Thiamethoxam treatment on sunflower seeds caused lethal and sublethal effects on O. insidiosus, whereas chlorantraniliprole was not lethal to any life stage, although sublethal effects were evident. The nymphal stage was most susceptible, and insecticidal toxicity diminished with plant development.
Collapse
Affiliation(s)
- Pablo C Gontijo
- Department of Entomology, Federal University of Lavras, Lavras, Minas Gerais, Brazil; Department of Entomology, Kansas State University, Agricultural Research Center-Hays, Hays, Kansas, USA
| | | | | | | |
Collapse
|
95
|
Ko K, Liu Y, Hou M, Babendreier D, Zhang F, Song K. Toxicity of Insecticides Targeting Rice Planthoppers to Adult and Immature Stages of Trichogramma chilonis (Hymenoptera: Trichogrammatidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2015; 108:69-76. [PMID: 26470105 DOI: 10.1093/jee/tou053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Accepted: 12/03/2014] [Indexed: 06/05/2023]
Abstract
Planthopper-targeting insecticides, pymetrozine, thiamethoxam, buprofezin, and nitenpyram, were tested under laboratory conditions for toxicity to adults and immatures of Trichogramma chilonis Ishii, using standard tests described by International Organization for Biological Control (IOBC). In the dry film residue test, all insecticides resulted in >90% mortality in T. chilonis adults and were ranked as moderately harmful. Persistent toxicity tests revealed that nitenpyram was short-lived and the other three insecticides were of slightly persistent toxicity to the wasp adults. Effects of the insecticides on egg, larval, and prepupal stages of T. chilonis were investigated with striped stem borer as host. At the three stages of T. chilonis (within the host egg), all the insecticides reduced parasitism rate, but nitenpyram and pymetrozine applied at egg stage, buprofezin and nitenpyram at larval stage, and buprofezin and thiamethoxam at prepupal stage of T. chilonis reduced parasitism by <30% in comparison with the control, and were thus ranked as harmless. Although insecticide treatment of the three immature stages of T. chilonis all reduced wasp emergence from host eggs, only thiamethoxam applied at larval stage and buprofezin at prepupal stage resulted in >30% reduction in emergence rate as compared with the control and were categorized as harmful. Immature duration of T. chilonis was only significantly extended by nitenpyram applied to egg stage than the control. Sex ratio of emerged wasps was not affected by the treatment to immature stages. The data are of significance for IPM programs incorporating inundative release of T. chilonis for control of lepidopteran rice pests where there is heavy co-occurrence of planthoppers.
Collapse
Affiliation(s)
- Ko Ko
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yudi Liu
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Maolin Hou
- State Key Laboratory for Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Dirk Babendreier
- CABI Switzerland, Rue des Grillons 1, CH-2800, Delémont, Switzerland
| | - Feng Zhang
- MOA-CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Kai Song
- Dryland Farming Institute, Hebei Academy of Agricultural and Forestry Sciences, Hengshui 053000, China
| |
Collapse
|
96
|
Yu C, Lin R, Fu M, Zhou Y, Zong F, Jiang H, Lv N, Piao X, Zhang J, Liu Y, Brock TCM. Impact of imidacloprid on life-cycle development of Coccinella septempunctata in laboratory microcosms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 110:168-173. [PMID: 25240465 DOI: 10.1016/j.ecoenv.2014.08.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 08/17/2014] [Accepted: 08/19/2014] [Indexed: 06/03/2023]
Abstract
Long-term effects of a single application of imidacloprid on ladybird beetle, Coccinella septempunctata L., were studied in indoor laboratory microcosms, starting with the 2nd instar larvae of C. septempunctata but covering the full life cycle. The microcosms comprised enclosures containing a pot with soil planted with broad bean plants and black bean aphid, Aphis craccivora Koch, as food. Exposure doses (0.85-13.66g a.i. ha(-1)) in the long-term microcosm experiment were based on a preliminary short-term (72h) toxicity test with 2nd instar larvae. The measurement endpoints used to calculate NOERs (No Observed Effect application Rates) included development time, hatching, pupation, adult emergence, survival and number of eggs produced. Furthermore, for these endpoints ER50 (application rate causing 50 percent effect) and LR50 (application rate causing 50 percent mortality) values were calculated when possible. The single imidacloprid application affected survival (lowest LR50 4.07g a.i. ha(-1); NOER 3.42g a.i. ha(-1)), egg production (ER50 26.63g a.i. ha(-1)) and egg hatching (NOER 6.83g a.i. ha(-1)). Statistically significant treatment-related effects on the whole development duration, pupation and adult emergence could not be demonstrated (NOER≥13.66g a.i. ha(-1)). The lowest L(E)R50 values and NOERs derived from the laboratory microcosm test with C. septempunctata are lower than the reported field application rates of imidacloprid (15-60g a.i. ha(-1)) in cotton cultivation in China, suggesting potential risks to beneficial arthropods.
Collapse
Affiliation(s)
- Caihong Yu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China
| | - Ronghua Lin
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China.
| | - Maoran Fu
- College of Chemistry and Environment Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China
| | - Yanming Zhou
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Fulin Zong
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Hui Jiang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Ning Lv
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Xiuying Piao
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Jia Zhang
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Yongquan Liu
- Institute for the Control of Agrochemicals, Ministry of Agriculture, 100125 Beijing, China
| | - Theo C M Brock
- Alterra, Wageningen University and Research Centre, PO Box 47, 6700 AA, Wageningen, The Netherlands
| |
Collapse
|
97
|
Li SJ, Ren SL, Xue X, Ren SX, Cuthbertson AGS, van Dam NM, Qiu BL. Efficiency of plant induced volatiles in attracting Encarsia formosa and Serangium japonicum, two dominant natural enemies of whitefly Bemisia tabaci in China. PEST MANAGEMENT SCIENCE 2014; 70:1604-10. [PMID: 24488542 DOI: 10.1002/ps.3749] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 01/28/2014] [Indexed: 05/11/2023]
Abstract
BACKGROUND Whitefly Bemisia tabaci is a globally distributed and most destructive pest to agriculture. Owing to increasing chemical resistance, a long-lasting strategy to manage this pest must involve biological control. Herbivore-induced plant volatiles (HIPVs) usually play a profoundly important role in the foraging behaviour of natural enemies. Here, the effects of HIPVs from Chinese broccoli on the foraging behaviour of two dominant natural enemy species of B. tabaci in China, Encarsia formosa and Serangium japonicum, were investigated using a four-arm olfactometer, and exogenous jasmonic acid (JA) was used to induce plant volatiles to mimic the damage of the herbivore pest. RESULTS The parasitoid E. formosa was found to be more attracted by the volatiles from JA-induced broccoli than those from control plants. The residence times of E. formosa in the final-choice areas closed to volatiles from shoot JA (SJA)- and root JA (RJA)-induced plants were 119.8 ± 35.2 s and 99.8 ± 34.7 s respectively in the dual-choice experiments, and 123.8 ± 32.0 s and 102.3 ± 28.7 s respectively in the three-choice experiment. All are significantly longer than those spent in the final-choice area closed to volatiles from control plants (CON). JA-induced volatiles were also only a little more attractive to the predator S. japonicum. However, there was no significant difference between each of the two natural enemies in residence time spent in the final-choice areas closed to SJA, RJA or CON volatiles in both the dual- and three-choice experiments. Furthermore, the number of times that the parasitoid or predator entered the SJA, RJA and CON final-choice areas was not significantly different in any of the experiments. CONCLUSION The present results indicate that RJA- and SJA-induced plant volatiles have higher efficiencies in attracting the natural enemies of whitefly B. tabaci. The attractive efficiencies varied according to the plant volatiles that JA induced, and also depended on the natural enemy species. The parasitoid E. formosa seems to be more sensitive to and attracted by the induced volatiles than the predator S. japonicum.
Collapse
Affiliation(s)
- Shao-Jian Li
- Department of Entomology, South China Agricultural University, Guangzhou, China
| | | | | | | | | | | | | |
Collapse
|
98
|
Alves PRL, Cardoso EJBN, Martines AM, Sousa JP, Pasini A. Seed dressing pesticides on springtails in two ecotoxicological laboratory tests. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 105:65-71. [PMID: 24785712 DOI: 10.1016/j.ecoenv.2014.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/03/2014] [Accepted: 04/09/2014] [Indexed: 05/21/2023]
Abstract
Terrestrial ecotoxicological tests are powerful tools for assessing the ecological risks that pesticides pose to soil invertebrates, but they are rarely used to evaluate seed dressing pesticides. This study investigated the effects of seed dressing pesticides on survival and reproduction of Folsomia candida (Collembola), using standardized ecotoxicological tests (after ISO guidelines with few adaptations for tropical conditions). Commercial formulations of five seed dressing pesticides were tested individually in Tropical Artificial Soil (TAS): the insecticides imidacloprid, fipronil, thiametoxam, and the fungicides captan and carboxin+thiram. Thiametoxam, captan, and carboxin+thiram were only lethal to F. candida at the highest concentration tested (1000mg of active ingredient kg(-1) of dry soil). Imidacloprid and fipronil were lethal at lower concentrations (100 and 10mg a.i. kg(-1) soil d.w, respectively), however, these concentrations were much higher than those predicted (PEC) for soil. Imidacloprid and fipronil were the most toxic pesticides in both tests, reducing significantly collembolan reproduction (EC20=0.02 and 0.12mga.i.kg(-1) soil d.w, respectively). Further studies under more realistic conditions are needed, since imidacloprid and fipronil reduced collembolan reproduction at concentrations below or close to their respective PECs.
Collapse
Affiliation(s)
- Paulo Roger L Alves
- Department of Soil Science, University of São Paulo, Avenida Pádua Dias, 10, 13416-900 Piracicaba, Brazil; Department of Agronomy, State University of Londrina, 86051990 Londrina, Brazil.
| | - Elke J B N Cardoso
- Department of Soil Science, University of São Paulo, Avenida Pádua Dias, 10, 13416-900 Piracicaba, Brazil
| | - Alexandre M Martines
- Department of Soil Science, University of São Paulo, Avenida Pádua Dias, 10, 13416-900 Piracicaba, Brazil
| | - José Paulo Sousa
- IMAR-CMA, Department of Life Sciences, University of Coimbra, P3004-517 Coimbra, Portugal
| | - Amarildo Pasini
- Department of Agronomy, State University of Londrina, 86051990 Londrina, Brazil
| |
Collapse
|
99
|
Wang Y, Guo L, Qi S, Zhang H, Liu K, Liu R, Liang P, Casida JE, Liu S. Fluorescent probes for insect ryanodine receptors: candidate anthranilic diamides. Molecules 2014; 19:4105-14. [PMID: 24699151 PMCID: PMC6270845 DOI: 10.3390/molecules19044105] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 03/13/2014] [Accepted: 03/21/2014] [Indexed: 11/16/2022] Open
Abstract
Diamide insecticides with high efficacy against pests and good environmental safety are broadly applied in crop protection. They act at a poorly-defined site in the very complex ryanodine (Ry) receptor (RyR) potentially accessible to a fluorescent probe. Two N-propynyl analogs of the major anthranilic diamide insecticides chlorantraniliprole (Chlo) and cyantraniliprole (Cyan) were accordingly synthesized and converted into two fluorescent ligands by click reaction coupling with 3-azido-7-hydroxy-2H-chromen-2-one. The new diamide analogs and fluorescent ligands were shown to be nearly as potent as Chlo and Cyan in inhibition of [3H]Chlo binding and stimulation of [3H]Ry binding in house fly thoracic muscle RyR. Although the newly synthesized compounds had only moderate activity in insect larvicidal activity assays, their high in vitro potency in a validated insect RyR binding assay encourages further development of fluorescent probes for insect RyRs.
Collapse
Affiliation(s)
- Yi Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Lei Guo
- College of Agriculture and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Suzhen Qi
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Hao Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Kechang Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Ruiquan Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - Pei Liang
- College of Agriculture and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| | - John E Casida
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720-3112, USA.
| | - Shangzhong Liu
- Department of Applied Chemistry, College of Science, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China.
| |
Collapse
|
100
|
Malaquias JB, Ramalho FS, Omoto C, Godoy WAC, Silveira RF. Imidacloprid affects the functional response of predator Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) to strains of Spodoptera frugiperda (J.E. Smith) on Bt cotton. ECOTOXICOLOGY (LONDON, ENGLAND) 2014; 23:192-200. [PMID: 24352830 DOI: 10.1007/s10646-013-1162-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/12/2013] [Indexed: 06/03/2023]
Abstract
Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) is one of the most common asopine species in the neotropical region and its occurrence was reported in several countries of South and Central America, as an important biological control agent for many crops. This study was carried out to identify the imidacloprid impacts on the functional response of predator P. nigrispinus fed on Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) strain resistant to lambda-cyhalothrin, on Bt cotton expressing Cry1Ac (Bollgard(®)). Spodoptera frugiperda larvae were used in the following conditions: resistant (1) and susceptible (2) strains to lambda-cyhalothrin fed on Bollgard(®) cotton leaves (DP 404 BG); and resistant (3) and susceptible (4) strains to lambda-cyhalothrin fed on non-genetically modified cotton leaves (cultivar DP4049). The predatory behavior of P. nigrispinus was affected by imidacloprid and the type II asymptotic curve was the one that best described the functional response data. Handling time (T h ) of predator females did not differ among treatments in the presence of imidacloprid. The attack rate did decrease, however, due to an increase in the density of larvae offered. Regardless of the treatment (S. frugiperda strain or cotton cultivar), the predation of P. nigrispinus females on S. frugiperda larvae was significantly lower when exposed to imidacloprid, especially at a density of 16 larvae/predator. The predation behavior of P. nigrispinus on S. frugiperda larvae is affected by the insecticide imidacloprid showing that its applications should be used in cotton crop with caution.
Collapse
Affiliation(s)
- J B Malaquias
- Biological Control Unit-Embrapa Algodão, Caixa Postal 174, Campina Grande, Paraíba, 58428-095, Brazil
| | | | | | | | | |
Collapse
|