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Kim SE, Kim HK, Kim GH. Sublethal Effects of Spirotetramat, Cyantraniliprole, and Pymetrozine on Aphis gossypii (Hemiptera: Aphididae). INSECTS 2024; 15:247. [PMID: 38667377 PMCID: PMC11050133 DOI: 10.3390/insects15040247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/19/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024]
Abstract
The toxicity and sublethal effects of three insecticides (spirotetramat, cyantraniliprole, and pymetrozine) on Aphis gossypii, a major agricultural pest, were investigated. The nymphal stage showed greater susceptibility than the adult stage to all the insecticides, with a difference of up to 8.9 times at the LC50 of spirotetramat. The effects of sublethal concentrations (LC10, LC30, LC50, and LC70) of the insecticides on the on the developmental period, survival rate, adult longevity, fecundity, and deformity rate were compared with those of the control. Compared with the control, cyantraniliprole and pymetrozine did not significantly affect the developmental period in the parental or F1 generation when applied at the nymphal stage at any concentration. Nonviable nymphs occurred in the F1 generation when both nymphs and adults were treated with spirotetramat and cyantraniliprole but not in the F2 generation. The age-specific maternity (lxmx) of A. gossypii treated with sublethal concentrations (LC10, LC30) decreased with increasing concentration. Spirotetramat at the LC30 resulted in significant differences in all life table parameters (R0, rm, λ, T, DT) compared with those of the control. Similarly, compared with that of the control (43.8), the net reproductive rate (R0) significantly decreased for all the insecticides except cyantraniliprole at the LC10 (37.5). Therefore, this study indicated that sublethal concentrations (over the LC30) of spirotetramat, cyantraniliprole, or pymetrozine might be useful for the density management of A. gossypii.
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Affiliation(s)
| | | | - Gil Hah Kim
- Department of Plant Medicine, College of Agriculture, Life and Environment Science, Chungbuk National University, Cheongju 28644, Republic of Korea; (S.E.K.); (H.K.K.)
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Yan S, Ren X, Zheng L, Wang X, Liu T. A systematic analysis of residue and risk of cyantraniliprole in the water-sediment system: Does metabolism reduce its environmental risk? ENVIRONMENT INTERNATIONAL 2023; 179:108185. [PMID: 37688810 DOI: 10.1016/j.envint.2023.108185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 08/07/2023] [Accepted: 09/03/2023] [Indexed: 09/11/2023]
Abstract
As a representative variety of diamide insecticides, cyantraniliprole has broad application prospects. In this study, the fate and risk of cyantraniliprole and its main metabolite J9Z38 in a water-sediment system were investigated. The present result showed that more J9Z38 was adsorbed in the sediment at the end of exposure. However, the bioaccumulation capacity of cyantraniliprole in zebrafish was higher than that of J9Z38. Cyantraniliprole had stronger influence on the antioxidant system and detoxification system of zebrafish than J9Z38. Moreover, cyantraniliprole induced more significant oxidative stress effect and more differentially expressed genes (DEGs) in zebrafish. Cyantraniliprole had significantly influence on the expression of RyR-receptor-related genes, which was confirmed by resolving their binding modes with key receptor proteins using AlphaFold2 and molecular docking techniques. In the sediment, both cyantraniliprole and J9Z38 had inhibitory effects on microbial community structure diversity and metabolic function, especially cyantraniliprole. The methane metabolism pathway, mediated by methanogens such as Methanolinea, Methanoregula, and Methanosaeta, may be the main pathway of degradation of cyantraniliprole and J9Z38 in sediments. The present results demonstrated that metabolism can reduce the environmental risk of cyantraniliprole in water-sediment system to a certain extent.
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Affiliation(s)
- Saihong Yan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xiangyu Ren
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Lei Zheng
- State Environmental Protection Key Laboratory of Dioxin Pollution, National Research Center of Environmental Analysis and Measurement, Sino-Japan Friendship Center for Environmental Protection, Beijing 100029, China.
| | - Xiuguo Wang
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Tong Liu
- Key Laboratory of Tobacco Pest Monitoring Controlling & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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Keszthelyi S, Gerbovits B, Jócsák I. Impact analysis of different applications of cyantraniliprole on control of horse chestnut leaf miner (Cameraria ohridella) larvae supported by biophoton emission. Biol Futur 2023:10.1007/s42977-023-00169-0. [PMID: 37221290 DOI: 10.1007/s42977-023-00169-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 05/13/2023] [Indexed: 05/25/2023]
Abstract
Cameraria ohridella is one of the most invasive pests of horse chestnut. Cyantraniliprole is one of the most perspectively active insecticides, which can transport within the plant in several ways, and its efficacy against this pest has not yet been tested. All three modes of application were effective against the target pest, but there was a difference in the time of action between them. However, no demonstrable difference in the speed of action was detected between the doses used. A more intense rate of acropetal translocation was confirmed compared to basipetal translocation. A trend-like effect between the applied concentration of cyantraniliprole and the photon emission intensity per unit area of plant tissue was observed in the translaminar and acropetal treatment settings. In both cases, a clear increase in photon emission was observed, indicating metabolic upregulation. Therefore, we can conclude that biophoton emission measurements can be utilized to conduct efficient pesticide translocation investigations.
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Affiliation(s)
- Sándor Keszthelyi
- Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Kaposvár, S. Guba Str. 40, 7400, Gödöllő, Hungary.
| | - Bálint Gerbovits
- Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Kaposvár, S. Guba Str. 40, 7400, Gödöllő, Hungary
| | - Ildikó Jócsák
- Institute of Agronomy, Hungarian University of Agriculture and Life Sciences, Kaposvár, S. Guba Str. 40, 7400, Gödöllő, Hungary
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Shen XJ, Chen JC, Cao LJ, Ma ZZ, Sun LN, Gao YF, Ma LJ, Wang JX, Ren YJ, Cao HQ, Gong YJ, Hoffmann AA, Wei SJ. Interspecific and intraspecific variation in susceptibility of two co-occurring pest thrips, Frankliniella occidentalis and Thrips palmi, to nine insecticides. PEST MANAGEMENT SCIENCE 2023. [PMID: 37042232 DOI: 10.1002/ps.7502] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/19/2023] [Accepted: 04/12/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Field control of pest thrips mainly relies on insecticides, but the toxicity of insecticides can vary among thrips species and populations. In this study, we examined the susceptibility of multiple field populations of two thrips pests, Frankliniella occidentalis, and Thrips palmi, that often co-occur on vegetables, to nine insecticides belonging to seven subgroups. RESULTS The highest level of variation in susceptibility among F. occidentalis populations was for spinetoram (73.92 fold difference between most resistant and most susceptible population), followed by three neonicotinoids (8.06-15.99 fold), while among T. palmi populations, it was also for spinetoram (257.19 fold), followed by emamectin benzoate, sulfoxaflor, and acetamiprid (23.64-45.50 fold). These findings suggest evolved resistance to these insecticides in some populations of the two thrips. One population of F. occidentalis had a particularly high level of resistance overall, being the most resistant for five of the nine insecticides tested. Likewise, a population of T. palmi had high resistance to all nine insecticides, again suggesting the evolution of resistance to multiple chemicals. For F. occidentalis, the LC95 values of most populations were higher than the field-recommended dosage for all insecticides except chlorfenapyr and emamectin benzoate. For several T. palmi populations, the LC95 values also tended to be higher than recommended dosages, except in the case of emamectin benzoate and spinetoram. CONCLUSIONS Our study found interspecific and intraspecific variations in the susceptibility of two thrips to nine insecticides and multiple resistance in some populations, highlighting the need for ongoing monitoring and resistance management. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xiu-Jing Shen
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jin-Cui Chen
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Jun Cao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zhong-Zheng Ma
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Na Sun
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yong-Fu Gao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Jun Ma
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jia-Xu Wang
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ya-Jing Ren
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Hua-Qian Cao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ya-Jun Gong
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Anthony Ary Hoffmann
- Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, Australia
| | - Shu-Jun Wei
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Yan S, Gu N, Peng M, Jiang Q, Liu E, Li Z, Yin M, Shen J, Du X, Dong M. A Preparation Method of Nano-Pesticide Improves the Selective Toxicity toward Natural Enemies. NANOMATERIALS 2022; 12:nano12142419. [PMID: 35889640 PMCID: PMC9323491 DOI: 10.3390/nano12142419] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 12/23/2022]
Abstract
Various nano-delivery systems have been designed to deliver synthetic/botanical pesticides for improved bioactivity. However, the enhanced toxicity of nanocarrier-loaded pesticides may injure the natural enemies, and their selective toxicity should be evaluated before the large-scale application. In this context, a star polymer (SPc)-based cyantraniliprole (CNAP) nano-delivery system was constructed, and its selective toxicity was evaluated using pest Frankliniella occidentalis (WFT) and predator Orius sauteri. The amide NH of CNAP could assemble with carbonyl groups or tertiary amines of SPc through hydrogen bonds to form CNAP/SPc complex spontaneously. The above self-assembly decreased the particle size of CNAP from 808 to 299 nm. With the help of SPc, the lethal concentration 50 (LC50) values of CNAP decreased from 99 to 54 mg/L and 230 to 173 mg/L toward WFTs and O. sauteri due to the enhancement of broad-spectrum bioactivity. Interestingly, the toxicity selective ratio (TSR) of CNAP increased from 2.33 to 3.23 with the help of SPc, revealing the higher selectivity of SPc-loaded CNAP. To our knowledge, it was the first successful exploration of the selective toxicity of nanocarrier-loaded pesticides, and the higher selective toxicity of SPc-loaded CNAP was beneficial for alleviating the negative impacts on predators.
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Affiliation(s)
- Shuo Yan
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
| | - Na Gu
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
| | - Min Peng
- State Key Laboratory of Chemical Resource Engineering, Beijing Lab of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China; (M.P.); (M.Y.)
| | - Qinhong Jiang
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
| | - Enliang Liu
- Research Institute of Grain Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
| | - Zhiqiang Li
- Adsen Biotechnology Co., Ltd., Urumqi 830022, China;
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Lab of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China; (M.P.); (M.Y.)
| | - Jie Shen
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
| | - Xiangge Du
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
| | - Min Dong
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China; (S.Y.); (N.G.); (Q.J.); (J.S.); (X.D.)
- Correspondence:
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Xu H, Pan Y, Li J, Yang F, Chen X, Gao X, Wen S, Shang Q. Chemosensory proteins confer adaptation to the ryanoid anthranilic diamide insecticide cyantraniliprole in Aphis gossypii glover. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2022; 184:105076. [PMID: 35715031 DOI: 10.1016/j.pestbp.2022.105076] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/27/2022] [Accepted: 03/06/2022] [Indexed: 06/15/2023]
Abstract
Chemosensory proteins (CSPs) are a class of small transporter proteins expressed only in arthropods with various functions beyond chemoreception. Previous studies have been reported that CSPs are involved in the insecticide resistance. In this study, we found that AgoCSP1, AgoCSP4, and AgoCSP5 were constitutively overexpressed in an insecticide-resistant strain of Aphis gossypii and showed higher expression in broad body tissue (including fat bodies) than in the midgut but without tissue specificity. However, the function of these three upregulated AgoCSPs remains unknown. Here, we investigated the function of AgoCSPs in resistance to the diamide insecticide cyantraniliprole. Suppression of AgoCSP1, AgoCSP4 and AgoCSP5 transcription by RNAi significantly increased the sensitivity of resistant aphids to cyantraniliprole. Molecular docking and competitive binding assays indicated that these AgoCSPs bind moderate with cyantraniliprole. Transgenic Drosophila melanogaster expressing these AgoCSPs in the broad body or midgut showed higher tolerance to cyantraniliprole than control flies with the same genetic background; AgoCSP4 was more effective in broad body tissue, and AgoCSP1 and AgoCSP5 were more effective in the midgut, indicating that broad body and midgut tissues may be involved in the insecticide resistance mediated by the AgoCSPs examined. The present results strongly indicate that AgoCSPs participate in xenobiotic detoxification by sequestering and masking toxic insecticide molecules, providing insights into new factors involved in resistance development in A. gossypii.
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Affiliation(s)
- Hongfei Xu
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Yiou Pan
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Jianyi Li
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Fengting Yang
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Xuewei Chen
- School of Agricultural Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, PR China
| | - Shuyuan Wen
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Qingli Shang
- College of Plant Science, Jilin University, Changchun 130062, PR China.
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A Preliminary Analysis on the Insecticidal Effect of Cyantraniliprole against Stored-Product Pests. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
While existing insecticides are becoming obsolete, the need for research and application of alternative substances is growing. Cyantraniliprole is a second-generation ryanodine receptor with the ability to bind and activate the ryanodine receptors in insect striated muscle cells, causing continuous muscular contraction, paralysis, and death. Many studies indicate its effectiveness on a variety of insects, but its action on storage pests has not yet been reported. We successfully conducted experiments for the first time on adult Tenebrio molitor, Tribolium confusum, Alphitobius diaperinus, Rhyzopertha dominica, and Trogoderma granarium with application of cyantraniliprole, causing dose-dependent mortality. Bioassays were carried out in the laboratory, where experimental adults were sprayed with six concentrations of cyantraniliprole. Mortality was recorded at 7, 14, 21, and 28 days after exposure. Mean mortality, survival concentration, and survival time were estimated for each species. The concentrations with both the highest mortality and the lowest survival rate were 2500 and 3000 ppm. Our results indicate that the tested insecticide was effective against T. confusum adults and is a promising pesticide for use in storage facilities.
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Zeng X, Pan Y, Tian F, Li J, Xu H, Liu X, Chen X, Gao X, Peng T, Bi R, Shang Q. Functional validation of key cytochrome P450 monooxygenase and UDP-glycosyltransferase genes conferring cyantraniliprole resistance in Aphis gossypii Glover. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 176:104879. [PMID: 34119222 DOI: 10.1016/j.pestbp.2021.104879] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 06/12/2023]
Abstract
Cytochrome P450 monooxygenases (P450s) and UDP-glycosyltransferases (UGTs) are major detoxifying enzymes that metabolize plant toxins and insecticides. In the present study, the synergists of piperonyl butoxide, sulfinpyrazone and 5-nitrouracil significantly increased cyantraniliprole and α-cypermethrin toxicity against the resistant strain. The transcripts of UGT341A4, UGT344B4, UGT344D6, UGT344J2 and UGT344M2 increased significantly in the CyR strain compared with the susceptible strain. Among these upregulated genes (including P450s), CYP6CY7 and UGT344B4 were highly expressed in the midgut. Transgenic expression of the P450 and UGT genes in broad body tissues in Drosophila melanogaster indicated that the expression of CYP380C6, CYP4CJ1, UGT341A4, UGT344B4 and UGT344M2 is sufficient to confer cyantraniliprole resistance, and CYP380C6, CYP6CY7, CYP6CY21, UGT341A4 and UGT344M2 are related to α-cypermethrin cross-resistance. The midgut-specific overexpression of CYP380C6, CYP6CY7, CYP6CY21, CYP4CJ1, UGT341A4, UGT344B4 and UGT344M2 significantly increased insensitivity to cyantraniliprole, and CYP380C6, CYP6CY7, CYP6CY21, UGT344B4 and UGT344M2 confer α-cypermethrin cross-resistance. The expression of CYP380C6, CYP4CJ1, UGT341A4 and UGT344M2 in broad tissues or in midgut has similar effects on insensitivity to insecticides; however, CYP6CY7, CYP6CY21 and UGT344B4 are more effective in the midgut. This result indicates that broad body tissues and midgut tissue are involved in insecticide resistance mediated by the candidate P450s and UGTs examined.
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Affiliation(s)
- Xiaochun Zeng
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Yiou Pan
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Fayi Tian
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Jianyi Li
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Hongfei Xu
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Xuemei Liu
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Xuewei Chen
- School of Agricultural Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, PR China
| | - Tianfei Peng
- College of Plant Science, Jilin University, Changchun 130062, PR China
| | - Rui Bi
- Department of Entomology, Jilin Agricultural University, Changchun 130118, PR China
| | - Qingli Shang
- College of Plant Science, Jilin University, Changchun 130062, PR China; School of Agricultural Science, Zhengzhou University, Zhengzhou 450001, PR China.
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Balanza V, Mendoza JE, Cifuentes D, Bielza P. Selection for resistance to pyrethroids in the predator Orius laevigatus. PEST MANAGEMENT SCIENCE 2021; 77:2539-2546. [PMID: 33481316 DOI: 10.1002/ps.6288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/24/2020] [Accepted: 01/22/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Insecticide resistance in the natural enemies of pest species is a very desirable trait. It allows better integration of biological control with the synthetic and natural compounds applied to manage certain pests, especially secondary pest outbreaks. Insecticide resistance in predatory insects has been documented for lady beetles and lacewings, but intriguingly no cases of field-evolved resistance have been noted in any heteropteran predator. In this work, we first explored the variation in susceptibility to pyrethroids in wild and commercial populations of Orius laevigatus (Fieber). Second, we exploited this genetic variation to artificially select a strain of O. laevigatus resistant to pyrethroids. RESULTS We found significant variation [median lethal dose (LC50 ) 1.6-77.0 mg L-1 ] in susceptibility to pyrethroids in wild populations of the heteropteran predator O. laevigatus, with a baseline LC50 value of 14.6 mg L-1 . We successfully selected a strain of O. laevigatus highly resistant to pyrethroids (LC50 = 1059.9 mg L-1 ). In addition, such resistance was expressed in every instar, particularly in the last nymphal stages, increasing the resilience of the whole population present in the crop facing pyrethroid application. CONCLUSION The level of resistance achieved may be sufficient to allow survival of adults and nymphs of O. laevigatus exposed to the maximum field rate of several pyrethroids and natural pyrethrins, widely used to control a number of pests in organic and integrated pest management crops. Therefore, this strain resistant to pyrethrins and pyrethroids would improve the resilience of biocontrol protocols, which is an urgent requirement for wider adoption of biological control. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Virginia Balanza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - José E Mendoza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Dina Cifuentes
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
- Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Pablo Bielza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
- Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
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10
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Dáder B, Colomer I, Adán Á, Medina P, Viñuela E. Compatibility of early natural enemy introductions in commercial pepper and tomato greenhouses with repeated pesticide applications. INSECT SCIENCE 2020; 27:1111-1124. [PMID: 31475776 PMCID: PMC7496849 DOI: 10.1111/1744-7917.12723] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 08/02/2019] [Accepted: 08/21/2019] [Indexed: 06/10/2023]
Abstract
Successful integrated pest management in protected crops implies an evaluation of the compatibility of pesticides and natural enemies (NE), as control strategies that only rely on one tactic can fail when pest populations exceed NE activity or pests become resistant to pesticides. Nowadays in Almería (Spain), growers release NE prior to transplanting or early in the crop cycle to favor their settlement before pest arrival because this improves biocontrol efficacy, although it extends pesticide exposure periods. The purpose of this research was to evaluate the compatibility of two applications of pesticides with key NE in 2-year trials inside tomato and sweet pepper commercial greenhouses: Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae), Orius laevigatus (Say) (Hemiptera: Anthocoridae) and Amblyseius swirskii (Athias-Henriot) (Acari: Phytoseiidae). In tomato, flubendiamide and chlorantraniliprole (IOBC category 1) were compatible with N. tenuis, but chlorpyrifos-methyl and spinosad (IOBC categories 2-3), which effectively reduced Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) density, compromised its predatory activity. In sweet pepper, chlorantraniliprole (IOBC category 1) was the only pesticide compatible with O. laevigatus while chlorantraniliprole, emamectin benzoate, spirotetramat and pymetrozine were harmless (IOBC category 1) to Amblyseius swirskii, and sulfoxaflor slightly harmful (IOBC category 2) to this phytoseiid predator.
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Affiliation(s)
- Beatriz Dáder
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB)Universidad Politécnica de Madrid (UPM)MadridSpain
| | - Ignacio Colomer
- Departamento de Ingeniería Rural, Escuela Superior de IngenieríaUniversidad de AlmeríaAlmeríaSpain
| | - Ángeles Adán
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB)Universidad Politécnica de Madrid (UPM)MadridSpain
| | - Pilar Medina
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB)Universidad Politécnica de Madrid (UPM)MadridSpain
| | - Elisa Viñuela
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB)Universidad Politécnica de Madrid (UPM)MadridSpain
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Lahiri S, Roberts PM, Toews MD. Role of Tillage, Thiamethoxam Seed Treatment, and Foliar Insecticide Application for Management of Thrips (Thysanoptera: Thripidae) in Seedling Cotton. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:181-187. [PMID: 30321379 DOI: 10.1093/jee/toy320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 06/08/2023]
Abstract
Thrips are early-season pests of cotton and can cause yield and stand losses if not managed. Strip tillage into a winter cover crop, use of a neonicotinoid seed treatment, and foliar insecticide applications are all reliable pest management tactics, but how these methods interact with each other in a thrip-cotton agroecosystem needs to be further understood. A 2-yr field study was conducted to compare thrip counts and thrip-induced plant injury as a function of tillage practice (conventional vs strip tillage with heavy rolled rye), thiamethoxam seed treatment, and foliar insecticide application for managing thrips in cotton. Adult and nymph density, seedling biomass, true leaf formation, stand count, and lint yield were assessed. Results indicate that heavy rolled rye was effective for mitigating thrips on seedling cotton. On conventionally tilled fields, the neonicotinoid seed treatment and a foliar insecticide application were necessary for maximizing yield. Spinetoram was more efficacious than either acephate or cyantraniliprole for management of immature thrips; however, there were no yield effects attributed to foliar insecticide application. These data suggest that growers can mitigate early-season thrips using both cultural and chemically based management tactics.
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Affiliation(s)
- Sriyanka Lahiri
- Department of Entomology, University of Georgia, Tifton Campus, Tifton, GA
| | - Phillip M Roberts
- Department of Entomology, University of Georgia, Tifton Campus, Tifton, GA
| | - Michael D Toews
- Department of Entomology, University of Georgia, Tifton Campus, Tifton, GA
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Moreno I, Belando A, Grávalos C, Bielza P. Baseline susceptibility of Mediterranean strains of Trialeurodes vaporariorum (Westwood) to cyantraniliprole. PEST MANAGEMENT SCIENCE 2018; 74:1552-1557. [PMID: 29377447 DOI: 10.1002/ps.4869] [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: 10/26/2017] [Revised: 01/09/2018] [Accepted: 01/19/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Cyantraniliprole is a novel anthranilic diamide insecticide that acts on a broad spectrum of insect pests, exclusively by activating their ryanodine receptors. Cyantraniliprole is very effective against whitefly and it presents a favorable ecotoxicological profile. In this study, the baseline susceptibility to cyantraniliprole of Trialeurodes vaporariorum populations from the Mediterranean area was established in nymphal systemic uptake bioassays. RESULTS The bioassay data showed that the susceptibility to cyantraniliprole varied among the strains collected across the Mediterranean basin. The 50% lethal concentration (LC50 ) range of cyantraniliprole for 16 field populations was from 0.017 to 0.194 mg L-1 , a 11.4-fold natural variability between the least and most sensitive populations. These LC50 values are similar to those reported in a previous study of the use of cyantraniliprol against another species of whitefly, Bemisia tabaci [LC50 = 0.048 (0.034-0.063) mg L-1 ]. CONCLUSION The current study confirmed the effectiveness of cyantraniliprole against T. vaporarioum strains, adding to the evidence that cyantraniliprole is a promising tool for use in integrated pest management programs. Future shifts in the susceptibility of whitefly field populations to cyantraniliprole may be documented according to the baseline susceptibility range of the populations tested in this research. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Inmaculada Moreno
- Departamento de Producción Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Ana Belando
- Departamento de Producción Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Carolina Grávalos
- Departamento de Producción Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Pablo Bielza
- Departamento de Producción Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
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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.
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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.
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Dong J, Wang K, Li Y, Wang S. Lethal and sublethal effects of cyantraniliprole on Helicoverpa assulta (Lepidoptera: Noctuidae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 136:58-63. [PMID: 28187832 DOI: 10.1016/j.pestbp.2016.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/02/2016] [Accepted: 08/07/2016] [Indexed: 06/06/2023]
Abstract
Cyantraniliprole is a novel anthranilic diamide insecticide registered for the control of many sucking and chewing insect pests including the oriental tobacco budworm, Helicoverpa assulta (Guenée), which is an important lepidopteran pest of tobacco in China. This study determined the lethal and sublethal effects of cyantraniliprole on a treated parental generation and on an untreated offspring generation of H. assulta. Cyantraniliprole was incorporated in the diet of 3rd-instar larvae of the parental generation. Cyantraniliprole was highly toxic to the parental generation: after a 72-h feeding period, the LC50 was 0.176mg/L. Cyantraniliprole tended to increase the developmental time of parental larvae, and the LC30 significantly reduced the pupation rate and the pupal weight. Cyantraniliprole also significantly decreased the intrinsic rate of increase (rm) and finite rate of increase (λ), and increased the doubling time (Dt). Treatment of the parental generation with the LC30 decreased the pupal weight and adult fecundity, and increased adult deformity in the parental and offspring generations. Cyantraniliprole did not significantly affect the pupal period, the percentage of females, or adult longevity in either generation. These results suggest that both the lethal and sublethal effects of cyantraniliprole might suppress H. assulta population growth by reducing the insect's survival, development, and reproduction.
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Affiliation(s)
- Junfeng Dong
- Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Kai Wang
- Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Yang Li
- Forestry College, Henan University of Science and Technology, Luoyang 471003, Henan, China
| | - Shaoli Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Echegaray ER, Vinchesi AC, Rondon SI, Alvarez JM, McKinley N. Potato Psyllid (Hemiptera: Triozidae) Response to Insecticides Under Controlled Greenhouse Conditions. JOURNAL OF ECONOMIC ENTOMOLOGY 2017; 110:142-149. [PMID: 28028167 DOI: 10.1093/jee/tow259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bactericera cockerelli (Šulc) is a common pest of solanaceous crops largely known for vectoring "psyllid yellows" in potatoes. In recent years, however, this pest has attracted considerable attention for vectoring Zebra Chip, a devastating bacterial disease that was first reported in the United States in 2004 and has spread across the southern and northwestern states, causing significant economic losses to potato growers and the industry. Management of the disease is mainly achieved by reducing the psyllid population using insecticides, including pyrethroids and neonicotinoids; however, new insecticides with different modes of action are needed to avoid the acquisition of resistance. In the current study, the immediate and residual effects of conventional and new materials were tested under greenhouse conditions against adults and nymphs. Cyantraniliprole at a high rate and spinetoram showed the highest immediate and residual activity against adults, whereas cyantraniliprole and oxamyl (low and high rates) were effective against nymphs, with no differences between rates. Soil applications of cyantraniliprole, oxamyl, and imidacloprid were still toxic to adults and nymphs 7 and 14 d after treatment. Also, cyantraniliprole and tolfenpyrad were detrimental to psyllid reproduction. The incorporation of new chemistry in rotation programs may provide a useful management tool against this pest.
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Affiliation(s)
- E R Echegaray
- Department of Crops and Soil Sciences, Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR, USA
- Montana State University, Bozeman, MT, USA
| | - A C Vinchesi
- Department of Crops and Soil Sciences, Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR, USA
- University of California Cooperative Extension 100 Sunrise Blvd., Colusa, CA, USA
| | - S I Rondon
- Department of Crops and Soil Sciences, Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR, USA
| | - J M Alvarez
- DuPont Crop Protection, Stine-Haskell Research Center, Newark, DE, USA
| | - N McKinley
- DuPont Crop Protection, Seattle, WA, USA
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Wang ZH, Gong YJ, Jin GH, Li BY, Chen JC, Kang ZJ, Zhu L, Gao YL, Reitz S, Wei SJ. Field-evolved resistance to insecticides in the invasive western flower thrips Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) in China. PEST MANAGEMENT SCIENCE 2016; 72:1440-1444. [PMID: 26617067 DOI: 10.1002/ps.4200] [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: 10/09/2015] [Revised: 11/13/2015] [Accepted: 11/27/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND To understand the current status of insecticide resistance of the invasive western flower thrips, Frankliniella occidentalis, in China, the responses of six field populations to six commonly used insecticides, i.e. spinosad, spinetoram, cyantraniliprole, imidacloprid, acetamiprid and pyriproxyfen, were evaluated in comparison with a susceptible laboratory strain. RESULTS Field populations tended to be less susceptible than the laboratory strain. The population from Shouguang, Shandong Province, showed the lowest levels of susceptibility. A 15.64-fold and 17.29-fold resistance to spinosad and spinetoram was detected in the Shouguang population. A 11.74-fold and 13.64-fold resistance to cyantraniliprole was detected in populations from Daxing in the Beijing area and Shouguang. All populations showed a low level of resistance to imidacloprid, acetamiprid and pyriproxyfen, except for the Shouguang population, which was 127.58-fold more resistant to pyriproxyfen. CONCLUSION Variations in resistance to the tested insecticides were observed among the sampled population. Spinosad and spinetoram were the most efficient insecticides and are recommended for use in an integrated management programme. Resistance management strategies should be implemented to reduce the potential for resistance evolving. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Ze-Hua Wang
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ya-Jun Gong
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Gui-Hua Jin
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bing-Yan Li
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jin-Cui Chen
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zong-Jiang Kang
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Liang Zhu
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yu-Lin Gao
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Stuart Reitz
- Malheur County Extension, Oregon State University, Ontario, OR, USA
| | - Shu-Jun Wei
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Xu C, Zhang Z, Cui K, Zhao Y, Han J, Liu F, Mu W. Effects of Sublethal Concentrations of Cyantraniliprole on the Development, Fecundity and Nutritional Physiology of the Black Cutworm Agrotis ipsilon (Lepidoptera: Noctuidae). PLoS One 2016; 11:e0156555. [PMID: 27249654 PMCID: PMC4889041 DOI: 10.1371/journal.pone.0156555] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 04/20/2016] [Indexed: 11/18/2022] Open
Abstract
To better understand the sublethal effects of cyantraniliprole on the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae), several studies were carried out to investigate sublethal effects on development stages, population parameters, feeding indices and nutrient content of A. ipsilon. The result of a bioassay showed that cyantraniliprole had high toxicity against A. ipsilon fourth-instar larvae with an LC50 of 0.354 μg.g-1 using an artificial diet. Compared with controls, sublethal doses of cyantraniliprole at LC5, LC20 and LC40 levels prolonged larval and pupal duration and extended mean generation time and total preovipositional period. In addition, survival rate, reproductive value, intrinsic and finite rates of increase and net reproduction rate declined significantly. Meanwhile, cyantraniliprole had markedly antifeedant effects; decreased the relative growth rate (RGR), the relative consumption rate (RCR), the efficiency of conversion of ingested food (ECI), the efficiency of conversion of digested food (ECD); and increased the approximate digestibility (AD) significantly. This phenomenon contributed to the decrease of nutrient contents, including lipids, protein and carbohydrates, to the point that insufficient energy was available for normal growth. Therefore, sublethal concentrations of cyantraniliprole decreased growth speed and reduced population reproduction of A. ipsilon. This result provides information useful in integrated pest management (IPM) programs for A. ipsilon.
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Affiliation(s)
- Chunmei Xu
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
| | - Zhengqun Zhang
- College of Horticultural Science and Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Kaidi Cui
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
| | - Yunhe Zhao
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
| | - Jingkun Han
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
| | - Feng Liu
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
| | - Wei Mu
- College of Plant Protection, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, Shandong Agricultural University, Tai’an, Shandong 271018, P.R. China
- * E-mail:
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Sang S, Shu B, Yi X, Liu J, Hu M, Zhong G. Cross-resistance and baseline susceptibility of Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) to cyantraniliprole in the south of China. PEST MANAGEMENT SCIENCE 2016; 72:922-928. [PMID: 26118543 DOI: 10.1002/ps.4068] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 05/05/2015] [Accepted: 06/22/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The oriental leafworm moth, Spodoptera litura Fab. (Lepidoptera: Noctuidae), is a widely distributed polyphagous insect pest in Asia that has been shown to be resistant to various types of insecticide. The newly registered anthranilic diamide cyantraniliprole provided novel insight and great opportunities to control S. litura. RESULTS In this study, the susceptibilities of S. litura collected from South China to cyantraniliprole were measured by standard leaf-disc bioassay, and obvious variation in susceptibility was observed among the 17 field populations, with LC50 values varying from 0.206 to 1.336 mg AI L(-1). Significant correlations were detected between the LC50 values of cyantraniliprole and chlorantraniliprole (P < 0.05). However, no significant correlation (P > 0.05) was observed between the two anthranilic diamides and other insecticides with different action mechanisms (delcamethrin, chlorpyrifos, indoxacarb and emamectin benzoate). Piperonyl butoxide showed obvious synergism in Lab-Sus, ZC14 and cyantraniliprole-resistant strains, while diethyl maleate and S,S,S-tributylphorotrithioate had no obvious synergistic effects in any of the strains tested. CONCLUSION These results revealed obvious regional variation in cyantraniliprole susceptibilities among populations of S. litura from different areas, and potential cross-resistance to chlorantraniliprole, which suggested that S. litura could develop resistance to cyantraniliprole. Detoxification enzymes might not be involved in the observed tolerance in field-collected populations and the cyantraniliprole-resistant strain.
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Affiliation(s)
- Song Sang
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
| | - Benshui Shu
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
| | - Xin Yi
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
| | - Jie Liu
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
| | - Meiying Hu
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
| | - Guohua Zhong
- Laboratory of Insect Toxicology, Key Laboratory of Pesticide and Chemical Biology, South China Agricultural University, Guangzhou, China
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