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Silva APN, Carvalho GA, Haddi K. The interplay between temperature and an insecticide mixture modulates the stimulatory response of sublethally exposed Myzus persicae. ECOTOXICOLOGY (LONDON, ENGLAND) 2024; 33:818-829. [PMID: 38990494 DOI: 10.1007/s10646-024-02780-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/01/2024] [Indexed: 07/12/2024]
Abstract
Temperature can interact with chemical pesticides and modulate their toxicity. Sublethal exposure to pesticides is known to trigger hormetic responses in pests. However, the simultaneous effects of temperature and sublethal exposure to single or mixture-based insecticides on the insects' stimulatory responses are not frequently considered in toxicological studies. Here we investigated the combined effects of temperature on the lethal and sublethal responses of the green peach aphid Myzus persicae after exposure to commercial formulations of a neonicotinoid (thiamethoxam) and a pyrethroid (lambda-cyhalothrin) and their mixture. Firstly, the concentration-response curves of the insecticides were determined under four temperatures (15 °C, 20 °C, 25 °C, and 28 °C) by the leaf dipping method. Subsequently, the sublethal concentrations C0, CL1, CL5, CL10, CL15, CL20, and CL30 were selected to assess sublethal effects on aphids' longevity and reproduction under the same temperatures. The results showed that the mixture of thiamethoxam + lambda-cyhalothrin caused greater toxicity to aphids compared to the formulations with each active ingredient alone and that the toxicity was higher at elevated temperatures. Furthermore, the exposure to low concentrations of the mixture (thiamethoxam + lambda-cyhalothrin) and the separated insecticides induced stimulatory responses in the longevity and fecundity of exposed aphid females, but the occurrence of such hormetic responses depended on the insecticide type, its sublethal concentration, and the temperature as well as their interactions.
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Affiliation(s)
- Ana Paula Nascimento Silva
- Laboratory of Molecular Entomology and Ecotoxicology, Department of Entomology, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Geraldo Andrade Carvalho
- Laboratory of Ecotoxicology and Integrated Pest Management, Department of Entomology, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Khalid Haddi
- Laboratory of Molecular Entomology and Ecotoxicology, Department of Entomology, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil.
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Wang Z, Wang S, Li L, Chen L, Gao Y, Yuan M, Wang Y, Shi S. The Effect of Different Thiamethoxam Concentrations on Riptortus pedestris Development and Fecundity. TOXICS 2024; 12:460. [PMID: 39058112 PMCID: PMC11280779 DOI: 10.3390/toxics12070460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/22/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024]
Abstract
The stink bug, Riptortus pedestris (Fabricius) (Hemiptera: Alydidae), is a highly destructive pest that significantly damages legume crops in East and South Asia. Neonicotinoid insecticides containing thiamethoxam are widely used to control R. pedestris in soybean fields. However, the current knowledge on the impact of different thiamethoxam concentrations on R. pedestris growth and reproduction is lacking and insufficient. The present study investigated the effects of thiamethoxam on the biological traits of R. pedestris after treatment with LC10 (19.8 mg/L), LC20 (31.6 mg/L), LC30 (44.2 mg/L), LC40 (58.9 mg/L), and LC50 (77.0 mg/L) concentrations. These five thiamethoxam concentrations (LC10~LC50) reduced adult longevity and fecundity in the F1 generation females. Thiamethoxam treatment also significantly decreased the population trend index, intrinsic rate of increase, net reproductive rate, gross reproductive rate, and finite rate of increase and increased the mean generation time. These results show that thiamethoxam hinders and suppresses the development and growth of the F1 population of R. pedestris. Thiamethoxam is recommended for spray control during peak adult emergence, as it not only has a controlling effect on the parental generation but also a negative impact on the F1 generations.
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Affiliation(s)
- Zijie Wang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
- Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences, Jiamusi 154007, China
| | - Song Wang
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
| | - Lixia Li
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
| | - Lei Chen
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
| | - Yu Gao
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
- Key Laboratory of Soybean Disease and Pest Control, Ministry of Agriculture and Rural Affairs, Changchun 130118, China
| | - Ming Yuan
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar 161006, China
| | - Yueying Wang
- Suzhou Academy of Agricultural Sciences, Suzhou 234099, China
| | - Shusen Shi
- College of Plant Protection, Jilin Agricultural University, Changchun 130118, China; (Z.W.); (L.L.); (S.S.)
- Key Laboratory of Soybean Disease and Pest Control, Ministry of Agriculture and Rural Affairs, Changchun 130118, China
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Dai Y, Yang F, Li J, Fu H, Wang X, Wan B, Cai M, Xin T, Xia B, Zhong L, Zou Z. Sublethal Effects of Emamectin Benzoate on Development and Reproduction and RNAi of the Vitellogenin Gene in Spodoptera frugiperda. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:200-208. [PMID: 38159287 DOI: 10.1021/acs.jafc.3c06892] [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: 01/03/2024]
Abstract
Spodoptera frugiperda, one of the most destructive corn pests in the world, invaded China in December 2018. In this study, sublethal concentrations (LC10 and LC30) of emamectin benzoate (EB) were used to treat pesticide-free treatment (PFT) and EB treatment (ET) of S. frugiperda. In PFT, compared with the control (CK), the pupal weight, hatching rate, and pupation rate of LC10 and LC30 groups were significantly reduced. The fecundity and the expression of vitellogenin gene (SfVg) were decreased after LC30 treatment, while the LC10 treatment groups showed no significant difference from the control group. In ET, compared to CK, the fecundity was increased by 11.14 and 18.8%. The expression of SfVg was upregulated by 2.6 times after LC30 treatment. Moreover, RNAi-mediated SfVg knockdown resulted in a nearly 70% reduction in oviposition. The result provided a theoretical basis for optimizing the application of EB and Vg-dsRNA in the control of S. frugiperda.
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Affiliation(s)
- Yi Dai
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Fanqin Yang
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Jie Li
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Huinan Fu
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Xi Wang
- School of Life Science, Nanchang University, Nanchang 330031, China
- Industry Development & Service Center for Agriculture and Rural Affairs of Jiangxi Province, Nanchang 330096, China
| | - Bin Wan
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Meiting Cai
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Tianrong Xin
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Bin Xia
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Ling Zhong
- Industry Development & Service Center for Agriculture and Rural Affairs of Jiangxi Province, Nanchang 330096, China
| | - Zhiwen Zou
- School of Life Science, Nanchang University, Nanchang 330031, China
- Jiangxi Provincial Key Laboratory of Interdisciplinary Science, Nanchang University, Nanchang 330031, China
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Ji X, Jiang YT, Guo TX, Zhang P, Li XA, Kong FB, Zhang BZ. Sublethal effects of imidacloprid on the fitness of two species of wheat aphids, Schizaphis graminum (R.) and Rhopalosiphum padi (L.). PLoS One 2023; 18:e0294877. [PMID: 38011174 PMCID: PMC10681248 DOI: 10.1371/journal.pone.0294877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 11/09/2023] [Indexed: 11/29/2023] Open
Abstract
Imidacloprid is a neonicotinoid insecticide that efficiently controls piercing-sucking mouthparts pests. However, the impact of low lethal concentration of imidacloprid on key demographic parameters of wheat aphids, Schizaphis graminum (R.) and Rhopalosiphum padi (L.) has been scarcely studied. In this study, we used the age stage, two-sex life table approach to investigate the sublethal effects of imidacloprid on the biological traits of S. graminum and R. padi. Bioassays showed that imidacloprid possesses high toxicity to adult S. graminum and R. padi, with LC50 of 3.59 and 13.78 mg L-1 following 24 h exposure. A low lethal concentration of imidacloprid (LC25) significantly decreased adult longevity and total longevity of progeny generation aphids (F1) of S. graminum. Nevertheless, imidacloprid (LC25) had no significant effects on the fecundity and longevity of directly exposed parental parental S. graminum and R. padi (F0). Our results showed that the low lethal concentration of imidacloprid affected the demographic parameters that ultimately impact on the population of S. graminum. This study provides detailed information about the overall effects of imidacloprid on S. graminum and R. padi that might help to manage these two key pests.
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Affiliation(s)
- Xiang Ji
- Hebi Institute of Engineering and Technology, Henan Polytechnic University, Hebi, P.R. China
| | - Yu-Tai Jiang
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang, P.R. China
| | - Tian-Xin Guo
- Department of Entomology, China Agricultural University, Beijing, P.R. China
| | - Pei Zhang
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang, P.R. China
| | - Xin-an Li
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang, P.R. China
| | - Fan-Bin Kong
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang, P.R. China
| | - Bai-Zhong Zhang
- Hebi Institute of Engineering and Technology, Henan Polytechnic University, Hebi, P.R. China
- College of Resources and Environment, Henan Engineering Research Center of Biological Pesticide & Fertilizer Development and Synergistic Application, Henan Institute of Science and Technology, Xinxiang, P.R. China
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Alimirzaee S, Khajehali J, Van Leeuwen T. Hormetic effects of neonicotinoid insecticides on Rhizoglyphus robini (Acari: Acaridae). PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 192:105396. [PMID: 37105633 DOI: 10.1016/j.pestbp.2023.105396] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/16/2023] [Accepted: 03/19/2023] [Indexed: 06/19/2023]
Abstract
The stimulation of biological processes by sublethal doses of insecticides or other stressors is known as hormesis. Here, we have evaluated whether exposure to field-relevant or low concentrations of neonicotinoids induce changes in the reproductive capacity of the bulb mite Rhizoglyphus robini (Acari: Acaridae). Among the tested neonicotinoids imidacloprid, thiamethoxam, and dinotefuran, the highest hormetic effect on the reproduction of R. robini occurred 24 h after the 48 h exposure period to imidacloprid at concentrations of 70 and 140 mg a.i./L. Despite the stimulating effects of imidacloprid on mite reproduction, no significant differences were observed in the offspring (F1) for biological aspects including egg hatch rate, embryonic period and sex ratio, while an increase was found in the duration of development time from egg to adult. Evaluation of the detoxification enzyme activities of treated adults showed that the highest activity of carboxyl/cholinesterases, cytochrome P450s, and glutathione S-transferases was obtained when exposed to 70, 140 and 70 mg a.i./L imidacloprid, immediately after the exposure period, respectively. Also, an increase in the activity of the antioxidant enzyme catalase was observed compared to that of the control. After imidacloprid pretreatment (140 mg a.i./L), the tolerance of adult mites to diazinon was increased about two-fold. This study shows that exposure to imidacloprid can induce hormetic effects on R. robini and could severely complicate its control due to a higher reproduction, enhanced detoxification enzyme activities, and increased tolerance against other pesticides.
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Affiliation(s)
- Sara Alimirzaee
- Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Jahangir Khajehali
- Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium..
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Wei Y, Su Y, Han X, Guo W, Zhu Y, Yao Y. Evaluation of Transgenerational Effects of Sublethal Imidacloprid and Diversity of Symbiotic Bacteria on Acyrthosiphon gossypii. INSECTS 2023; 14:insects14050427. [PMID: 37233055 DOI: 10.3390/insects14050427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023]
Abstract
Symbiotic bacteria and hormesis in aphids are the driving forces for pesticide resistance. However, the mechanism remains unclear. In this study, the effects of imidacloprid on the population growth parameters and symbiotic bacterial communities of three successive generations of Acyrthosiphon gossypii were investigated. The bioassay results showed that imidacloprid had high toxicity to A. gossypii with an LC50 of 1.46 mg·L-1. The fecundity and longevity of the G0 generation of A. gossypii decreased when exposed to the LC15 of imidacloprid. The net reproductive rate (R0), intrinsic rate of increase (rm), finite rate of increase (λ), and total reproductive rate (GRR) of G1 and G2 offspring were significantly increased, but those of the control and G3 offspring were not. In addition, sequencing data showed that the symbiotic bacteria of A. gossypii mainly belonged to Proteobacteria, with a relative abundance of 98.68%. The dominant genera of the symbiotic bacterial community were Buchnera and Arsenophonus. After treatment with the LC15 of imidacloprid, the diversity and species number of bacterial communities of A. gossypii decreased for G1-G3 and the abundance of Candidatus-Hamiltonella decreased, but Buchnera increased. These results provide insight into the resistance mechanism of insecticides and the stress adaptation between symbiotic bacteria and aphids.
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Affiliation(s)
- Yindi Wei
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yue Su
- College of Agriculture, Tarim University, Aral 843300, China
| | - Xu Han
- College of Agriculture, Tarim University, Aral 843300, China
| | - Weifeng Guo
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yue Zhu
- College of Agriculture, Tarim University, Aral 843300, China
| | - Yongsheng Yao
- College of Agriculture, Tarim University, Aral 843300, China
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Zhu G, Ding W, Zhao Y, Xue M, Zhao H, Liu S. Biological and physiological responses of two Bradysia pests, Bradysia odoriphaga and Bradysia difformis, to Dinotefuran and Lufenuron. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 190:105338. [PMID: 36740337 DOI: 10.1016/j.pestbp.2023.105338] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/19/2022] [Accepted: 01/06/2023] [Indexed: 06/18/2023]
Abstract
Bradysia odoriphaga and Bradysia difformis are destructive root maggots that cause severe losses to vegetables, flowers and edible fungi. Due to the long-term dependence on single pesticides, Bradysia resistance to insecticides has increased, and field control efficacy has decreased obviously. To screen alternative insecticides, and compare the insecticide susceptibility of these two species, we tested the toxicity of eight insecticides to B. odoriphaga and B. difformis, and measured the sublethal effects of Dinotefuran and Lufenuron on life-history parameters and detoxification enzyme activities. Bioassay results indicated that Dinotefuran and Lufenuron had relatively higher toxicity to B. odoriphaga and B. difformis compared to other neonicotinoid and insect growth regulator insecticides, respectively. Significant adverse impacts caused by sublethal concentrations (LC20) of Dinotefuran and Lufenuron on the life-history parameters of F0 and F1 generations of B. odoriphaga and B. difformis were observed. These included reduced survival, prolonged larval development and reduced adult longevity and fecundity. B. odoriphaga had greater resistance and adaptation to insecticides than B. difformis, and an LC20 concentration of Dinotefuran stimulated the reproduction of B. odoriphaga F1 generation and increased the life table parameters. Detoxifying enzymes (CarE and GSTs) and P450 activities fluctuated after a sublethal concentration (Dinotefuran and Lufenuron) treatment, and at the peak value of enzyme activities, the enhancement of detoxifying enzymes of B. odoriphaga was significantly higher than that of B. difformis. These results indicated that Dinotefuran and Lufenuron should be considered as alternatives to other insecticides for control of root maggots. B. odoriphaga exhibited stronger adaptation to insecticides than B. difformis. These data provide guidance for control of root maggots, and the basic information presented here can help reveal the differences in adaptive mechanisms between B. odoriphaga and B. difformis.
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Affiliation(s)
- Guodong Zhu
- College of Agronomy, Liaocheng University, Shandong Province 252000, China; College of Plant Protection, Shandong Agricultural University, Shandong Province 271018, China.
| | - Wenjuan Ding
- College of Plant Protection, Shandong Agricultural University, Shandong Province 271018, China
| | - Yongfei Zhao
- Liaocheng Academy of Agricultural Sciences, Liaocheng 252000, China
| | - Ming Xue
- College of Plant Protection, Shandong Agricultural University, Shandong Province 271018, China.
| | - Haipeng Zhao
- College of Plant Protection, Shandong Agricultural University, Shandong Province 271018, China
| | - Shouzhu Liu
- College of Agronomy, Liaocheng University, Shandong Province 252000, China
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Jia B, Zhang J, Hong S, Chang X, Li X. Sublethal effects of chlorfenapyr on Plutella xylostella (Lepidoptera: Plutellidae). PEST MANAGEMENT SCIENCE 2023; 79:88-96. [PMID: 36087295 DOI: 10.1002/ps.7175] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/26/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The diamondback moth (DBM), Plutella xylostella (L.), is the most destructive pest of cruciferous vegetables worldwide. Chlorfenapyr is an important insecticide for controlling DBM. The impacts of three sublethal doses (LC1 , LC10 and LC30 ) of chlorfenapyr on the chlorfenapyr-exposed DBM individuals and their unexposed F1 and F2 offspring were investigated in order to reveal the non-lethal deleterious effects of chlorfenapyr and its potential hormetic effects. RESULTS LC1 significantly increased female pupa weight of F0 and F1 generations, and F0 fecundity as well as F1 gross reproduction rate (GRR). The LC1 -elicited rise in emergency rate and fecundity was significantly greater in F0 than in F1 . By contrast, LC30 significantly decreased age-specific survival rates, pupation rate, male pupal weight, emergence rate and fecundity of F0 and F1 generations as well as female adult proportion and GRR, net reproduction rate (R0 ), intrinsic rate of increase (rm ) and finite rate of increase (λ) of F1 generation. The LC30 -induced reductions in pupation rate, adult emergence rate, male and female pupa weight, and fecundity were greater in F1 than in F0 . While LC10 elicited only a mild inhibition (extension of pupal duration) in F0 , it yielded both deleterious (drops in female proportion and age-specific survivals) and hormetic effects (ups in male longevity and female fecundity) in F1 . CONCLUSION The results demonstrate that the sublethal effects of chlorfenapyr on DBM vary from inhibition to stimulatory hormesis, depending on the dose and generation. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Biantao Jia
- College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Junliang Zhang
- College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Shanshan Hong
- College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Xiaoli Chang
- Shanghai Engineering Research Centre of Low-carbon Agriculture, Shanghai Key Laboratory of Protected Horticultural Technology, Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Xianchun Li
- Department of Entomology and BIO5 Institute, University of Arizona, Tucson, AZ, USA
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Cai Y, Dou T, Gao F, Wang G, Dong Y, Song N, An S, Yin X, Liu X, Ren Y. Sublethal Effects of Thiamethoxam on Biological Traits and Detoxification Enzyme Activities in the Small Brown Planthopper, Laodelphax striatellus (Fallén). JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:2051-2060. [PMID: 36351784 DOI: 10.1093/jee/toac178] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Indexed: 06/16/2023]
Abstract
The small brown planthopper (Laodelphax striatellus (Fallén), Hemiptera: Delphacidae), is an important agricultural pest of rice, and neonicotinoid insecticides are commonly used for controlling L. striatellus. However, the sublethal effects of thiamethoxam on L. striatellus remain relatively unknown. In this study, an age-stage life table procedure was used to evaluate the sublethal effects of thiamethoxam on the biological parameters of L. striatellus. Additionally, activities of carboxylesterase, glutathione S-transferase, and cytochrome P450 monooxygenase in the third instar nymphs were analyzed. The results indicated that the survival time of F0 adults and the fecundity of female adults decreased significantly after the third instar nymphs were treated with sublethal concentrations of thiamethoxam (LC15 0.428 mg/liter and LC30 0.820 mg/liter). The developmental duration, adult preoviposition period, total preoviposition period, and mean generation time of the F1 generation increased significantly, whereas the fecundity of the female adults, intrinsic rate of increase (ri), and finite rate of increase (λ) decreased significantly. The oviposition period was significantly shorter for the insects treated with LC30 than for the control insects. Neither sublethal concentrations had significant effects on the adult longevity, net reproduction rate (R0), or gross reproduction rate (GRR) of the F1 generation. The activities of carboxylesterase, glutathione-S-transferase, and cytochrome P450 monooxygenase increased significantly after the thiamethoxam treatments. These results indicate that sublethal concentrations of thiamethoxam can inhibit L. striatellus population growth and enhance detoxification enzyme activities.
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Affiliation(s)
- Yubiao Cai
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Tao Dou
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Futao Gao
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Guanghua Wang
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, Henan Province, China
| | - Yachang Dong
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, Henan Province, China
| | - Nan Song
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Shiheng An
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Xinming Yin
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Xiangyang Liu
- College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, Henan Province, China
| | - Yingdang Ren
- Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, Henan Province, China
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Iftikhar A, Hafeez F, Aziz MA, Hashim M, Naeem A, Yousaf HK, Saleem MJ, Hussain S, Hafeez M, Ali Q, Rehman M, Akhtar S, Marc RA, Syaad KMA, Mostafa YS, Saeed FAA. Assessment of sublethal and transgenerational effects of spirotetramat, on population growth of cabbage aphid, Brevicoryne brassicae L. (Hemiptera: Aphididae). Front Physiol 2022; 13:1014190. [PMID: 36579021 PMCID: PMC9791945 DOI: 10.3389/fphys.2022.1014190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 11/09/2022] [Indexed: 12/13/2022] Open
Abstract
The cabbage aphid (Brevicoryne brassicae L.) is a devastating pest of cruciferous crops causing economic damage worldwide and notably owing to its increasing resistance to commonly used pesticides. Such resistance prompts the development of integrated pest management (IPM) programs that include novel pesticides being effective against the aphids. Spirotetramat is a novel insecticide used against sap-sucking insect pests, particularly aphids. This study evaluated the toxicity of spirotetramat to adult apterous B. brassicae after 72 h using the leaf dipping method. According to the toxicity bioassay results, the LC50 value of spirotetramat to B. brassicae was 1.304 mgL-1. However, the sublethal concentrations (LC5 and LC15) and transgenerational effects of this novel insecticide on population growth parameters were estimated using the age-stage, two-sex life table theory method. The sublethal concentrations (LC5; 0.125 mgL-1 and LC15; 0.298 mgL-1) of spirotetramat reduced the adult longevity and fecundity of the parent generation (F0). These concentrations prolonged the preadult developmental duration while decreasing preadult survival, adult longevity and reproduction of the F1 generation. The adult pre-reproductive period was also extended by spirotetramat treatment groups. Subsequently, the population growth parameters such as the intrinsic rate of increase r, finite rate of increase λ and net reproductive rate R 0 of the F1 generation were decreased in spirotetramat treatment groups whereas, the mean generation time T of the F1 generation was not affected when compared to the control. These results indicated the negative effect of sublethal concentrations of spirotetramat on the performance of B. brassicae by reducing its nymphal survival, extending the duration of some immature stages and suppressing the population growth of B. brassicae. Overall, we demonstrated that spirotetramat is a pesticide showing both sublethal activities, and transgenerational effects on cabbage aphid; it may be useful for implementation in IPM programs against this aphid pest.
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Affiliation(s)
- Ayesha Iftikhar
- Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan,*Correspondence: Ayesha Iftikhar, ; Muhammad Hafeez,
| | - Faisal Hafeez
- Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Muhammad Asif Aziz
- Department of Entomology, Faculty of Crop and Food Sciences, Pir Mehr Ali Shah, Arid Agriculture University, Rawalpindi, Pakistan
| | - Muhammad Hashim
- Department of Entomology, Faculty of Agricultural Sciences, University of the Punjab, Lahore, Pakistan
| | - Afifa Naeem
- Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | | | - Muhammad Jawad Saleem
- Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Sabir Hussain
- Department of Agriculture, Mir Chakar Khan Rind University, Sibi, Pakistan
| | - Muhammad Hafeez
- State Key Laboratory of Rice Biology and Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China,*Correspondence: Ayesha Iftikhar, ; Muhammad Hafeez,
| | - Qurban Ali
- Entomological Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Muzammal Rehman
- Key Laboratory of Plant Genetics and Breeding, College of Agriculture, Guangxi University, Nanning, China
| | - Sumreen Akhtar
- Department of Zoology, Faculty of Basic Sciences, University of the Punjab, Lahore, Pakistan
| | - Romina Alina Marc
- Food Engineering Department, Faculty of Food Science and Technology, University of Agricultural Science and Veterinary Medicine Cluj-Napoca, Cluj-Napoca, Romania
| | - Khalid M. Al Syaad
- Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Yassor Sabry Mostafa
- Department of Biology, College of Science, King Khalid University, Abha, Saudi Arabia
| | - Fatimah A. Al Saeed
- Department of Biology, Saudi Arabia Research Center for Advanced Materials Science (RCAMS), College of Science, King Khalid University, Abha, Saudi Arabia
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11
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Xia F, Luo D, He M, Wu S, Zhao X, Liao X. The development, reproduction and P450 enzyme of the white-backed planthopper, Sogatella furcifera (Hemiptera: Delphacidae) under the sublethal concentrations of clothianidin. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 246:114188. [PMID: 36244166 DOI: 10.1016/j.ecoenv.2022.114188] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 10/08/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Clothianidin is a second-generation neonicotinoid insecticide that can effectively prevent piercing-sucking pests, such as white-backed planthopper (WBPH), Sogatella furcifera (Horváth). In this study, the sublethal effects of clothianidin on the biological traits of S. furcifera were evaluated via the age-stage, two-sex life table procedure. Our results exhibited that the female adult longevity, fecundity and hatchability of F0 generation were significantly decreased after LC10 and (or) LC30 of clothianidin exposure compared to the control. Transgenerational effects showed that the pre-adult period, female adult longevity, total longevity, oviposition days (Od), fecundity and mean generation time (T) of F1 generation were significantly decreased in the LC10 and LC30 groups compared to the control. Moreover, the development times of the third- and fifth-instar nymphs, total preoviposition period (TPOP) and doubling time (DT) were significantly shorter in the LC10 group than in the control and LC30 groups. Furthermore, the intrinsic rate of increase (ri) and finite rate of increase (λ) values of the LC10 group were significantly higher than those of the control group. However, there was no significant difference in the male adult longevity, adult preoviposition period (APOP) and net reproductive rate (R0) between the treated groups and the control. Enzyme activity and gene expression results showed that the P450 enzyme activity and mRNA levels of many P450 genes were significantly increased by clothianidin treatment. In addition, the knockdown of CYP4CE3 and CYP6FJ3, which showed the highest inducing levels, by RNA interference (RNAi) dramatically increased the toxicity of clothianidin against S. furcifera. These results indicated that sublethal concentrations of clothianidin showed a stimulatory effect on the development, but it could adversely affect the survival and reproduction of S. furcifera. Additionally, CYP4CE3 and CYP6FJ3 might play an important role in the detoxification and evolution of clothianidin resistance in S. furcifera.
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Affiliation(s)
- Fujin Xia
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Dan Luo
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Minrong He
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Shuai Wu
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Xueyi Zhao
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China
| | - Xun Liao
- Institute of Crop Protection, Guizhou University, Guiyang 550025, PR China; College of Agriculture, Guizhou University, Guiyang 550025, PR China; The Provincial Key Laboratory for Agricultural Pest Management in Mountainous Region, Guizhou University, Guiyang 550025, PR China.
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12
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Capela N, Sarmento A, Simões S, Azevedo-Pereira HMVS, Sousa JP. Sub-lethal doses of sulfoxaflor impair honey bee homing ability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 837:155710. [PMID: 35526620 DOI: 10.1016/j.scitotenv.2022.155710] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 06/14/2023]
Abstract
Agricultural intensification has increased the number of stressors that pollinators are exposed to. Besides increasing landscape fragmentation that limit the supply of flower resources, intensive agricultural practices relying on the use of pesticides to control agricultural pests also affect non-target organisms like honey bees. The use of most pesticides containing neonicotinoids has been severely restricted in the European Union, leaving pesticides containing acetamiprid as the only ones that are still authorized. In the meantime, new substances like sulfoxaflor, that have a similar mode of action acting on the insect's nicotinic acetylcholine receptors (nAChR), have been approved for agricultural use. In Europe and USA, the use of pesticides containing this active ingredient is limited due to toxic effects already reported on bees, but no restrictions regarding this matter were applied in other countries (e.g., Brazil). In this study, homing ability tests with acetamiprid and sulfoxaflor were performed, in which honey bees were fed with three sub-lethal doses from each substance. After exposure, each honey bee was equipped with an RFID chip and released 1 km away from the colony to evaluate their homing ability. No significant effects were detected in honey bees fed with 32, 48 and 61 ng of acetamiprid while a poor performance on their homing ability, with only 28% of them reaching the colony instead of 75%, was detected at a 26 ng/a.s./bee dose of sulfoxaflor. Although, both pesticides act on the nAChR, the higher sulfoxaflor toxicity might be related with the honey bees detoxifying mechanisms, which are more effective on cyano-based neonicotinoids (i.e., acetamiprid) than sulfoximines. With this study we encourage the use of homing ability tests to be a suitable candidate to integrate the future risk assessment scheme, providing valuable data to models predicting effects on colony health that emerge from the individual actions of each bee.
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Affiliation(s)
- Nuno Capela
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal.
| | - Artur Sarmento
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
| | - Sandra Simões
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
| | - Henrique M V S Azevedo-Pereira
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal; ForestWISE - Collaborative Laboratory for Integrated Forest & Fire Management, Quinta de Prados, 5001-801 Vila Real, Portugal
| | - José Paulo Sousa
- Centre for Functional Ecology, Department of Life Sciences, Associated Laboratory TERRA, University of Coimbra, Portugal
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13
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Zhang A, Xu L, Liu Z, Zhang J, Han L, Zhao K. The effects of acetamiprid multigeneration stress on metabolism and physiology of Aphis glycines Matsumura (Hemiptera: Aphididae). ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2022; 110:e21903. [PMID: 35416322 DOI: 10.1002/arch.21903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/15/2022] [Accepted: 03/25/2022] [Indexed: 06/14/2023]
Abstract
Aphis glycines Matsumura (Hemiptera: Aphididae) is a major soybean pest that often poses a serious threat to soybean production. In this study, we checked the effects of acetamiprid on redox, energy metabolism, and hormone expression in A. glycines. The LC50 and LC30 of acetamiprid were used to treat the fourth instar nymphs in each generation from F0 to F4 to measure the activity of peroxidase, pyruvate kinase, and trehalase using a microassays approach. The peroxidase activity was significantly higher than control when treated with the LC30 of acetamiprid in F2-F5 generations. The activity of pyruvate kinase was significantly higher, while trehalase activity was substantially lower than control in each generation. Besides, we monitored molting and juvenile hormone expression in soybean aphids using enzyme-linked immunosorbent assay. The juvenile hormone titer of third instar nymphs was significantly higher in the treatment group (F1, F2, F4, and F5), while no effects were noted in the F3 generation. Taken together, the activity of peroxidase and pyruvate kinase in soybean aphid first increased to the peak and then decreased, while the trehalase activity continuously decreased in all generations following exposure to acetamiprid. The juvenile hormone titer was significantly higher, while the molting hormone titer was significantly lower in LC50 -treated aphids than in control. Moreover, the LC30 of acetamiprid increased the molting hormone expression in soybean aphids. These findings indicated a baseline for the effective use of acetamiprid in controlling soybean aphids.
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Affiliation(s)
- Aonan Zhang
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Ling Xu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Ziqi Liu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Jiabo Zhang
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Lanlan Han
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Kuijun Zhao
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, China
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14
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Fouad EA, El-Sherif SAN, Mokbel ESMS. Flupyradifurone induces transgenerational hormesis effects in the cowpea aphid, Aphis craccivora. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:909-918. [PMID: 35616792 DOI: 10.1007/s10646-022-02556-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
With low-dose stimulation and high-dose inhibition, insecticide-induced hormesis, a biphasic phenomenon, can contribute to pest resurgence. The cowpea aphid, Aphis craccivora (Koch) (Homoptera: Aphididae), is a vital insect that infests legume crops. Its hormesis of flupyradifurone has not been previously established. Age-stage two-sex life analysis is used to investigate the sublethal and transgenerational effects of flupyradifurone on two successive generations of A. craccivora. A leaf-dip bioassay method revealed high toxicity of flupyradifurone against A. craccivora, with lethal concentration 50% value (LC50) of 1.82 mg L-1 after 48 h exposure. Treatment of parent generation (F0) with LC10 and LC25 of flupyradifurone significantly increased the longevity and fecundity of the directly exposed adults. The results of transgenerational effects showed that the treatment of (F0) with LC25 induced significant hormetic effects in progeny generation (F1). Furthermore, flupyradifurone at LC25 significantly enhanced the biological traits, such as intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) compared with the control. Similarly, both LC10 and LC25 induced a significant increase in the mean generation time T (d). Conversely, both treatments caused a significant decrease in the doubling time (DT). Data in the present study demonstrate that the exposure of (F0) to flupyradifurone at LC10 and LC25 enhanced longevity and fecundity in the directly exposed adults of A. craccivora, and induced transgenerational hormesis across the subsequent (F1) generation. These results should be taken into consideration when using flupyradifurone for controlling cowpea aphid.
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Affiliation(s)
- Eman A Fouad
- Department of Bioassay, Central Agricultural Pesticides Laboratory, Agricultural Research Center, 12618, Giza, Egypt
| | - Sherifa A N El-Sherif
- Department of Bioassay, Central Agricultural Pesticides Laboratory, Agricultural Research Center, 12618, Giza, Egypt
| | - El-Sayed M S Mokbel
- Department of Standard Rearing, Central Agricultural Pesticides Laboratory, Agricultural Research Center, 12618, Giza, Egypt.
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15
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Zhang A, Zhou W, Wu D, Han L, Zhao K. Effects of multigenerational imidacloprid and thiamethoxam stress on metabolism and physiology of Aphis glycines Matsumura (Hemiptera: Aphididae). PLoS One 2022; 17:e0271069. [PMID: 35802579 PMCID: PMC9269462 DOI: 10.1371/journal.pone.0271069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 06/22/2022] [Indexed: 11/18/2022] Open
Abstract
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), a primary pest of soybean, poses a severe threat to soybean production. In this study, the 4th instar nymphs were exposed to the LC50 and LC30 of imidacloprid and thiamethoxam from F0 to F4 generations to evaluate the activities of peroxidase, pyruvate kinase, and trehalase using microassay. We found that peroxidase and pyruvate kinase activities in soybean aphids increased rapidly, first to peak and then decreased slowly generation by generation under imidacloprid and thiamethoxam stress. In contrast, the trehalase activity was significantly decreased in F1 to F5 generations when treated with the LC50 and LC30 and imidacloprid and thiamethoxam compared to control. In addition, the Enzyme-Linked Immunosorbent Assay (ELISA) was used to monitor the changes in molting and juvenile hormone expressions of the soybean aphids in each generation (F1-F5). The expression of juvenile hormone in soybean aphids was increased significantly in each generation under continuous stress of imidacloprid and thiamethoxam LC50 imidacloprid and LC50 thiamethoxam inhibited the expression of molting hormones in soybean aphids of each generation. LC30 imidacloprid or LC30 thiamethoxam significantly stimulated the expression of molting hormone in the 1st and 2nd instar nymphs in each generation. In this paper, the differences in antioxidant regulation, energy metabolism intensity, and hormone expression of multi-generation soybean aphids were monitored under continuous stress of imidacloprid and thiamethoxam. Our results revealed the effects of continuous insecticide stress on the main endogenous substances. Further, they clarified the regulation rules of resistance in soybean aphids, providing a reference for efficient control with imidacloprid and thiamethoxam.
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Affiliation(s)
- Aonan Zhang
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Wenjing Zhou
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Dongxue Wu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Lanlan Han
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Kuijun Zhao
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
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16
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Wang W, Huang Q, Liu X, Liang G. Differences in the Sublethal Effects of Sulfoxaflor and Acetamiprid on the Aphis gossypii Glover (Homoptera: Aphididae) Are Related to Its Basic Sensitivity Level. INSECTS 2022; 13:insects13060498. [PMID: 35735835 PMCID: PMC9225309 DOI: 10.3390/insects13060498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/21/2022] [Accepted: 05/24/2022] [Indexed: 02/01/2023]
Abstract
Simple Summary The sublethal effects of insecticides are not only environmentally risky to arthropods but may also promote resistance evolution. Sublethal effects are influenced by factors such as the type of insecticide, sublethal concentration, and type of pest. This study evaluated the sublethal effects of sulfoxaflor and acetamiprid on two field cotton aphid (Aphis gossypii) populations with different genetic backgrounds. For acetamiprid, a significant negative sublethal effect of an LC25 concentration of acetamiprid on longevity and fecundity was observed in the F0 generation of Jinghe, and a significant negative sublethal effect occurred in the F1 and F2 generations of Yarkant, some biological traits of which were significantly degraded. However, in terms of biological traits, significant stimulative sublethal effects of an LC25 concentration of sulfoxaflor were observed in the F0 generation of Jinghe and the F1 generation of Yarkant. These experimental results demonstrate that sulfoxaflor and acetamiprid have different sublethal effects on A. gossypii that vary depending on the generation. Moreover, the sublethal effects of an insecticide may be influenced by the genetic background and resistance levels of A. gossypii. Our findings are useful for assessing the overall effects of sulfoxaflor and acetamiprid on A. gossypii. Abstract The cotton aphid, Aphis gossypii, is an important insect pest of many crops around the world, and it has developed resistance to a large number of frequently used insecticides. The sublethal effects of insecticides not only have an environmental risk to arthropods but also have the potential to promote resistance evolution. The sublethal effects (inhibitory or stimulatory) are influenced by many factors, such as the type of insecticide, sublethal concentrations, pest species, and others. In this study, the sublethal effects of sulfoxaflor and acetamiprid on A. gossypii were compared using two field-collected populations. The results show that sulfoxaflor was more toxic than acetamiprid against A. gossypii in both populations, the LC50 concentrations of acetamiprid and sulfoxaflor were 6.35 and 3.26 times higher, respectively, for the Jinghe population than for Yarkant. The LC25 concentration of acetamiprid significantly reduced adult longevity and fecundity in exposed adults (F0) of the Jinghe population, but it had no significant effects on these factors in Yarkant. Similar inhibitory effects were found in the F1 and F2 generations, but the biological traits in the Yarkant population were significantly reduced when the parents (F0) were exposed to LC25 of acetamiprid, whereas the changes in the Jinghe population were not significant. However, sublethal sulfoxaflor showed a stimulatory effect on A. gossypii in the F0 and F1 generation; the adult fecundity and longevity of the F0 generation were significantly higher in Jinghe, while the biological traits of the F1 generation were obviously higher in Yarkant. In the F2 generation, the r and λ were significantly higher in Jinghe; meanwhile, these biological traits were reduced in Yarkant. These results indicate that sulfoxaflor and acetamiprid had different sublethal effects on A. gossypii that varied by generation. In addition, we speculate that the genetic background and the resistance levels of A. gossypii may also influence the sublethal effects. Our findings are useful for assessing the overall effects of sulfoxaflor and acetamiprid on A. gossypii.
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Affiliation(s)
- Wei Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (W.W.); (Q.H.)
- Department of Entomology, China Agricultural University, Beijing 100193, China;
- Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Qiushi Huang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (W.W.); (Q.H.)
| | - Xiaoxia Liu
- Department of Entomology, China Agricultural University, Beijing 100193, China;
| | - Gemei Liang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (W.W.); (Q.H.)
- Correspondence:
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17
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Iqbal H, Fatima A, Khan HAA. ZnO nanoparticles produced in the culture supernatant of Bacillus thuringiensis ser. israelensis affect the demographic parameters of Musca domestica using the age-stage, two-sex life table. PEST MANAGEMENT SCIENCE 2022; 78:1640-1648. [PMID: 34989098 DOI: 10.1002/ps.6783] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/31/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Indiscriminate use of broad-spectrum insecticides can have deleterious effects on insects and the environment. The use of nanoparticles synthesized from microbes has recently gained importance as a safe alternative to conventional insecticides. Recently, zinc oxide (ZnO) nanoparticles synthesized using Bacillus thuringiensis have shown insecticidal potential; however, in addition to its acute toxicity, it is necessary to determine possible sublethal effects at the organismal level to understand the toxicity of a new insecticide. Bt-derived enzymes such as nitrate reductase and other biomolecules play a vital role in the reduction of metal ions to metal nanoparticles. Here, we assessed the acute toxicity and sublethal effects of ZnO nanoparticles produced in the culture supernatant of B. thuringiensis ser. israelensis (Bti) as a reducing agent on the biological traits of Musca domestica. RESULTS Concentration-response larval bioassays using different concentrations of ZnO-Bti-supernatant nanoparticles revealed LC10 , LC20 , LC50 and LC90 values of 4.17, 6.11, 12.73 and 38.90 μg g-1 of larval diet, respectively. Exposure of M. domestica larvae to two concentrations (LC10 and LC20 ) resulted in a lengthened developmental time (egg to adult) and preoviposition period, and reduced fecundity, survival, longevity and oviposition period. Furthermore, population parameters including net reproductive rate, mean generation time, age-specific survival rate, fecundity, life expectancy and reproductive values, analyzed following age-stage and two-sex life table theory, were significantly decreased after exposure to these concentrations of ZnO-Bti-supernatant nanoparticles compared with the control. CONCLUSION ZnO-Bti-supernatant nanoparticles were shown to be toxic to M. domestica. Exposure of M. domestica to low concentrations of ZnO-Bti-supernatant nanoparticles resulted in negative transgenerational effects on progeny production in this fly. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Hafsa Iqbal
- Department of Environmental Science, Lahore College for Women University, Lahore, Pakistan
| | - Ammara Fatima
- Department of Environmental Science, Lahore College for Women University, Lahore, Pakistan
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18
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Oliveira C, Orozco-Restrepo SM, Alves AC, Pinto BS, Miranda MS, Barbosa MH, Picanço MC, Pereira EJ. Seed treatment for managing fall armyworm as a defoliator and cutworm on maize: plant protection, residuality, and the insect life history. PEST MANAGEMENT SCIENCE 2022; 78:1240-1250. [PMID: 34850531 DOI: 10.1002/ps.6741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/21/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The highly polyphagous and invasive fall armyworm (FAW, Spodoptera frugiperda) can feed on different plant parts of host crops, damaging whorls and stalks in early maize growth stages. Systemic insecticide seed treatment (IST) could minimize this damage, although the residual efficacy may vary with the plant tissue damaged. Using damage rating scales and artificial infestation in controlled conditions, we determined the potential of IST against FAW attacking maize whorl leaves or the stalk base. RESULTS Chlorantraniliprole, cyantraniliprole, or thiodicarb + imidacloprid IST similarly killed > 80% FAWs for 1 or 2 weeks after plant emergence depending on the plant tissue attacked. The residual efficacy (i.e. time after plant emergence sustaining > 80% larval mortality) lasted from the first to the eleventh day (VE-V3 maize growth stages), while for cutworm on the maize stalk base, it lasted 3-7 days after plant emergence (V1-V2 stages). In terms of damage, the ISTs lasted 15 days after emergence (V4 stage) for FAW on whorl leaves and 10 days (V3 stage) for FAW feeding on the stalk base. The larvae surviving on the seed-treated plants underwent sublethal effects in growth and development, reducing insect fitness. CONCLUSION Diamide or carbamate + neonicotinoid seed treatments kill FAW larvae on maize whorls or stalks in favorable edaphoclimatic and insecticide-susceptibility conditions. The cumulative impacts of systemic IST on aboveground insect pests go beyond mortality. The ISTs studied can be valuable against FAW in maize, for instance, to help protect varieties that may not express sufficient insect resistance in maize early growth stages.
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Affiliation(s)
- Camila Oliveira
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
- Bioagro, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Silvana M Orozco-Restrepo
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
- Bioagro, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Antônio Cl Alves
- Department of Plant Science, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Braullio S Pinto
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Morgana S Miranda
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
- Bioagro, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Márcio Hp Barbosa
- Department of Plant Science, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Marcelo C Picanço
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Eliseu Jg Pereira
- Department of Entomology, Universidade Federal de Viçosa, Viçosa, Brazil
- Bioagro, National Institute of Science and Technology in Plant-Pest Interactions, Universidade Federal de Viçosa, Viçosa, Brazil
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Zhang Y, Xu G, Jiang Y, Ma C, Yang G. Sublethal Effects of Imidacloprid on Fecundity, Apoptosis and Virus Transmission in the Small Brown Planthopper Laodelphax striatellus. INSECTS 2021; 12:insects12121131. [PMID: 34940219 PMCID: PMC8706141 DOI: 10.3390/insects12121131] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/13/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022]
Abstract
Laodelphax striatellus damages plants directly through sucking plant sap and indirectly as a vector of rice stripe virus (RSV), resulting in serious losses of rice yield. It is one of the most destructive insects of rice in East Asia. Insecticides are primarily used for pest management, but the sublethal concentrations of insecticides may benefit several insects. The present research attempted to explore the effects of sublethal concentrations of imidacloprid on the fecundity, apoptosis and RSV transmission in the viruliferous SBPH. The results showed that the fecundity of SBPH was significantly increased after treatment with the LC10 dose of imidacloprid, while the LC30 dose of imidacloprid reduced the fecundity compared with the control. To further investigate the underlying mechanism of increased fecundity after exposure to the LC10 dose of imidacloprid, we examined the expression levels of vitellogenin (Vg), Vg receptor (VgR) and caspases in the ovaries of SBPH, and observed the apoptosis by terminal deoxynucleotidyl transferase (TDT)-mediated dUTP-digoxigenin nick end labeling (TUNEL). qRT-PCR results indicated that the expression levels of Vg, VgR and four caspase genes were all significantly increased by the LC10 dose of imidacloprid, and TUNEL assays suggested that the frequency of apoptosis was significantly higher in the SBPH treated by the LC10 dose of imidacloprid, suggesting a potential correlation between the increased fecundity and the apoptosis of SBPH ovarioles. Additionally, the expression levels of RNA3 and capsid protein (CP) were both increased significantly by the LC10 dose of imidacloprid, whereas were decreased by the LC30 dose of imidacloprid compared to the control. Therefore, this study clarifies the mechanisms of sublethal effects of imidacloprid on viruliferous SBPH and could be used to optimize pest control strategies.
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Affiliation(s)
- Yuanyuan Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.J.); (C.M.)
| | - Gang Xu
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.J.); (C.M.)
- Correspondence: (G.X.); (G.Y.)
| | - Yu Jiang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.J.); (C.M.)
| | - Chao Ma
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.J.); (C.M.)
| | - Guoqing Yang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China; (Y.Z.); (Y.J.); (C.M.)
- Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Correspondence: (G.X.); (G.Y.)
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Zhang A, Zhu L, Shi Z, Liu T, Han L, Zhao K. Effects of imidacloprid and thiamethoxam on the development and reproduction of the soybean aphid Aphis glycines. PLoS One 2021; 16:e0250311. [PMID: 34529690 PMCID: PMC8445468 DOI: 10.1371/journal.pone.0250311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 08/24/2021] [Indexed: 11/23/2022] Open
Abstract
The soybean aphid Aphis glycines Matsumura (Hemiptera: Aphididae) is a primary pest of soybeans and poses a serious threat to soybean production. Our studies were conducted to understand the effects of different concentrations of insecticides (imidacloprid and thiamethoxam) on A. glycines and provided critical information for its effective management. Here, we found that the mean generation time and adult and total pre-nymphiposition periods of the LC50 imidacloprid- and thiamethoxam-treatment groups were significantly longer than those of the control group, although the adult pre-nymphiposition period in LC30 imidacloprid and thiamethoxam treatment groups was significantly shorter than that of the control group. Additionally, the mean fecundity per female adult, net reproductive rate, intrinsic rate of increase, and finite rate of increase of the LC30 imidacloprid-treatment group were significantly lower than those of the control group and higher than those of the LC50 imidacloprid-treatment group (P < 0.05). Moreover, both insecticides exerted stress effects on A. glycines, and specimens treated with the two insecticides at the LC50 showed a significant decrease in their growth rates relative to those treated with the insecticides at LC30. These results provide a reference for exploring the effects of imidacloprid and thiamethoxam on A. glycines population dynamics in the field and offer insight to agricultural producers on the potential of low-lethal concentrations of insecticides to stimulate insect reproduction during insecticide application.
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Affiliation(s)
- Aonan Zhang
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Lin Zhu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Zhenghao Shi
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Tianying Liu
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Lanlan Han
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
| | - Kuijun Zhao
- College of Agriculture, Northeast Agricultural University, Harbin, Heilongjiang, PR China
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Skouras PJ, Darras AI, Mprokaki M, Demopoulos V, Margaritopoulos JT, Delis C, Stathas GJ. Toxicity, Sublethal and Low Dose Effects of Imidacloprid and Deltamethrin on the Aphidophagous Predator Ceratomegilla undecimnotata (Coleoptera: Coccinellidae). INSECTS 2021; 12:insects12080696. [PMID: 34442261 PMCID: PMC8396430 DOI: 10.3390/insects12080696] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/28/2021] [Accepted: 07/30/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary Chemical insecticides are used to control agricultural pests all over the world. However, extensive use of chemical insecticides can be harmful to human health and negatively impact the environment and biological control agents. We studied the toxicity and sublethal effects of imidacloprid and deltamethrin on the aphidophagous coccinellid predator Ceratomegilla undecimnotata (Coleoptera: Coccinellidae). We evaluated one low (LD30) and one sublethal dose (LD10) for both insecticides. Lethal and sublethal effects of both insecticides negatively affected survival, development, reproduction, and longevity, and reduced the intrinsic (r) and finite (λ) rate of increase and the net reproduction rate (R0) of treated populations compared to the control. Our findings indicate that the use of imidacloprid and deltamethrin in combination with C. undecimnotata in the context of IPM should be taken with caution due to the toxic effects of the chemicals in the biocontrol agent under laboratory conditions. Abstract Ceratomegilla undecimnotata (Coleoptera: Coccinellidae) is a common aphidophagous coccinellid predator used in biological control against aphid pests. Knowing toxicity, lethal, and sublethal effects of insecticides on natural enemies is essential in order to incorporate them into Integrated Pest Management (IPM). In the present study, the lethal and sublethal effects of imidacloprid and deltamethrin were evaluated on the fourth instar larvae of C. undecimnotata and subsequently on the full life cycle. Our results strongly suggest that sublethal and low doses of imidacloprid and deltamethrin at LD10 and LD30 affected fourth instar larvae duration time, adult preoviposition period, total preoviposition period, and fecundity. Moreover, the intrinsic (r) and finite (λ) rate of increase and the net reproduction rate (R0) significantly decreased in populations treated with imidacloprid compared to the control population. The data clearly suggest that imidacloprid and deltamethrin have a negative influence on population growth parameters of C. undecimnotata at sublethal and low doses and, therefore, these insecticides should be used with caution within the context of IPM.
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Affiliation(s)
- Panagiotis J. Skouras
- Laboratory of Agricultural Entomology and Zoology, Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece; (M.M.); (G.J.S.)
- Correspondence: ; Tel.: +30-27210-45277
| | - Anastasios I. Darras
- Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece; (A.I.D.); (C.D.)
| | - Marina Mprokaki
- Laboratory of Agricultural Entomology and Zoology, Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece; (M.M.); (G.J.S.)
| | - Vasilios Demopoulos
- Laboratory of Plant Protection, Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece;
| | - John T. Margaritopoulos
- Department of Plant Protection, Institute of Industrial and Fodder Crops, Hellenic Agricultural Organization “DEMETER”—NAGREF, 38446 Volos, Greece;
| | - Costas Delis
- Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece; (A.I.D.); (C.D.)
| | - George J. Stathas
- Laboratory of Agricultural Entomology and Zoology, Department of Agriculture, Kalamata Campus, University of the Peloponnese, 24100 Antikalamos, Greece; (M.M.); (G.J.S.)
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Gul H, Ullah F, Hafeez M, Tariq K, Desneux N, Gao X, Song D. Sublethal concentrations of clothianidin affect fecundity and key demographic parameters of the chive maggot, Bradysia odoriphaga. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1150-1160. [PMID: 34165677 DOI: 10.1007/s10646-021-02446-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
Bradysia odoriphaga is a major insect pest that infests Chinese chive in northern China. Clothianidin is a second-generation neonicotinoid insecticide that is commonly used against B. odoriphaga. In this study, the effect of sublethal clothianidin concentrations (LC5 and LC10) on key biological characteristics of B. odoriphaga was investigated using an age-stage, two-sex life table method. Bioassays results showed that clothianidin exhibited high toxicity against B. odoriphaga with LC50 of 1.898 mg L-1 following 24 h exposure. The developmental duration of larvae was significantly increased when exposed to the LC5 (0.209 mg L-1) and LC10 (0.340 mg L-1) of clothianidin. No significant effects were observed on the pupal stage, adult pre-oviposition period (APOP), total pre-oviposition period (TPOP), and mean longevities of male and female. The oviposition period and fecundity of B. odoriphaga were reduced in clothianidin-treated groups. Moreover, key demographic parameters, including the intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0), were significantly decreased by the LC5 and LC10 of clothianidin, while no effects were noted on mean generation time (T). Overall, this study showed that sublethal concentrations of clothianidin have a detrimental effect on B. odoriphaga developmental period, fecundity, and life table parameters. Therefore, clothianidin has the potential to suppress the population of B. odoriphaga even at sublethal concentrations.
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Affiliation(s)
- Hina Gul
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Farman Ullah
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
| | - Muhammad Hafeez
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, P. R. China
| | - Kaleem Tariq
- Department of Agriculture Entomology, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Nicolas Desneux
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000, Nice, France
| | - Xiwu Gao
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Dunlun Song
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing, 100193, China.
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Dai C, Ricupero M, Wang Z, Desneux N, Biondi A, Lu Y. Transgenerational Effects of a Neonicotinoid and a Novel Sulfoximine Insecticide on the Harlequin Ladybird. INSECTS 2021; 12:681. [PMID: 34442247 PMCID: PMC8396657 DOI: 10.3390/insects12080681] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/24/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022]
Abstract
The harlequin ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), is a generalist predator and an effective biocontrol agent of various insect pests that has been exploited for the control of aphid pests in the greenhouse and field. However, insecticides are widely used to control aphid pests worldwide and the potential non-target effects of sulfoxaflor and imidacloprid for controlling aphid pests towards this biocontrol agent are little known. Although both sulfoxaflor and imidacloprid act on nicotinic acetylcholine receptors of insects, sulfoxaflor has a novel chemical structure compared with neonicotinoids. We assessed the lethal, sublethal and transgenerational effects of sulfoxaflor and imidacloprid on H. axyridis simultaneously exposed via ingestion of contaminated prey and via residual contact on the host plant at LC20 and LC50 doses estimated for the cotton aphid. Imidacloprid significantly reduced the survival of H. axyridis adults compared to sulfoxaflor at the same lethal concentration against cotton aphid. Both concentrations of imidacloprid and sulfoxaflor reduced the proportion of ovipositing females, and both concentrations of imidacloprid and sulfoxaflor, except LC20 dose of sulfoxaflor, reduced the fecundity and fertility of the parental generation. In the progeny of imidacloprid- and sulfoxaflor-exposed parents, both tested LC50 concentrations significantly decreased the juvenile survival rate, and both concentrations of imidacloprid and sulfoxaflor, except LC20 dose of sulfoxaflor, prolonged the development time. Our findings provide evidence of the negative influence of imidacloprid and sulfoxaflor at low lethal concentrations on the harlequin ladybird and on the progeny of exposed individuals, i.e., transgenerational effects. Hence, these findings stress the importance of optimizing the applications of imidacloprid and sulfoxaflor for the control of aphid pests, aiming at preserving the biocontrol services provided by H. axyridis throughout the integrated pest management approach.
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Affiliation(s)
- Changchun Dai
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
- Department of Plant Protection, College of Agriculture, Northeast Agricultural University, Harbin 150030, China;
- Langfang Experimental Station of the Chinese Academy of Agricultural Sciences, Langfang 065005, China
| | - Michele Ricupero
- Department of Agriculture Food and Environment, University of Catania, 95123 Catania, Italy; (M.R.); (A.B.)
| | - Zequn Wang
- Department of Plant Protection, College of Agriculture, Northeast Agricultural University, Harbin 150030, China;
| | - Nicolas Desneux
- Université Côte d’Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France;
| | - Antonio Biondi
- Department of Agriculture Food and Environment, University of Catania, 95123 Catania, Italy; (M.R.); (A.B.)
| | - Yanhui Lu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
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Tamilselvan R, Kennedy JS, Suganthi A. Sublethal and transgenerational effects of spinetoram on the biological traits of Plutella xylostella (L.) (Lepidoptera: Plutellidae). ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:667-677. [PMID: 33779935 DOI: 10.1007/s10646-021-02385-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Spinetoram, a spinosyn insecticide is used to manage lepidopteran pests, including diamondback moth, Plutella xylostella. In addition to determining the lethal effects, identifying low and/or sublethal effects of an insecticide is crucial to understanding the total impact of an insecticide. We assessed the low lethal and sublethal effects of spinetoram on two successive generations of P. xylostella. The initial bioassay results showed that spinetoram exhibited high toxicity against P. xylostella with an LC50 of 0.114 mg L-1 after 48 h exposure. The low lethal (LC25) and sublethal (LC10) concentrations of spinetoram showed significant reduction in pupation rate, pupal weight and adult emergence. The fecundity of F1 generation was significantly lower in LC25 (117.85 eggs/female) and LC10 (121.34 eggs/female) treated group than untreated control (145.32 eggs/female). The intrinsic rates of increase (r) was significantly lower (r = 0.1984 day-1) in spinetoram treated P. xylostella F1 progeny compared to untreated control (r = 0.2394 day-1). Our results suggest that LC10 and LC25 concentration of spinetoram might affect P. xylostella population growth by reducing its survival, development, and reproduction.
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Affiliation(s)
- R Tamilselvan
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
| | - J S Kennedy
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India.
| | - A Suganthi
- Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore, India
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Khan HAA. Pyriproxyfen induces lethal and sublethal effects on biological traits and demographic growth parameters in Musca domestica. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:610-621. [PMID: 33761024 DOI: 10.1007/s10646-021-02394-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/10/2021] [Indexed: 05/19/2023]
Abstract
Musca domestica is a global insect-pest of human beings and animal agriculture. Pyriproxyfen, a juvenile hormone analog, has shown its potential for effective management of M. domestica. However, lethal and sublethal effects of pyriproxyfen on biological traits and demographic growth parameters of M. domestica are still unknown. The present study investigated the effects of lethal and sublethal concentrations on different biological traits of M. domestica for two generations i.e., exposed parents (F0) and their offspring (F1). Concentration-response bioassays revealed that concentrations of pyriproxyfen that caused 50% (LC50), 25% (LC25), 10% (LC10) and 2% (LC2) mortality of M. domestica were estimated as 0.12, 0.06, 0.03 and 0.01 μg/g, respectively. In the F0 generation, exposure of 3rd instar larvae to these concentrations resulted in a reduced pupation rate, lengthened pupal stage duration, light weight pupae and reduction in adult emergence in a concentration-dependent manner. In the case of F1 generation, similar trend was observed for pupation rate, pupal stage duration, and total developmental period (i.e., egg to adult); however, pupal weight was affected at LC10, LC25, LC50 levels, and adult emergence at only LC25 and LC50 levels. The values of demographic growth parameters, analyzed through age-stage, two-sex life table theory, were significantly decreased at all the levels of pyriproxyfen compared with control. This study highlights that pyriproxyfen has the potential to suppress the population of M. domestica through its lethal and sublethal effects and presents an empirical basis from which to consider management decisions for chemical control in the field.
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Meijer N, de Rijk T, van Loon JJA, Zoet L, van der Fels-Klerx HJ. Effects of insecticides on mortality, growth and bioaccumulation in black soldier fly (Hermetia illucens) larvae. PLoS One 2021; 16:e0249362. [PMID: 33882072 PMCID: PMC8059818 DOI: 10.1371/journal.pone.0249362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 03/17/2021] [Indexed: 11/18/2022] Open
Abstract
Residues of persistent insecticides may be present in the substrates on which insects are reared for food and feed, which may affect insect growth or survival. In addition, insecticidal substances may bio-accumulate in reared insects. The objective of this study was to assess potential effects of selected insecticides on the growth and survival of black soldier fly larvae (BSFL, Hermetia illucens) and on their safety when used as animal feed. Six insecticides (chlorpyrifos, propoxur, cypermethrin, imidacloprid, spinosad, tebufenozide) with different modes of action were tested in two sequential experiments. Cypermethrin was also tested with the synergist piperonyl butoxide (PBO). Standard BSFL substrate was spiked to the respective maximum residue level (MRL) of each insecticide allowed by the European Union to occur in feed; and BSFL were reared on these substrates. Depending on the observed effects in the first experiment, spiked concentrations tested in the second experiment were increased or reduced. At the concentrations applied (1 and 10 times MRL), three of the six tested substances (chlorpyrifos, propoxur, tebufenozide) did not affect the survival or biomass growth of BSFL, compared to the control (non-spiked) treatments. At MRL, imidacloprid stimulated the growth of BSFL compared to the controls. Spinosad and cypermethrin at the MRL level negatively affected growth and survival. The effects of cypermethrin appeared to be augmented by addition of PBO. A mean bio-accumulation factor of ≤0.01 was found in both experiments for all substances-except for cypermethrin, which was comparatively high, but still below 1 (0.79 at 0.1 mg/kg). The lack of accumulation of insecticides in the larvae suggests that there is no risk of larval products being uncompliant with feed MRLs. However, we conclude that insecticides present in substrates may affect growth and survival of BSFL. More research on a larger variety of substances and insect species is recommended.
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Affiliation(s)
- Nathan Meijer
- Wageningen Food Safety Research, Wageningen, The Netherlands
| | - Theo de Rijk
- Wageningen Food Safety Research, Wageningen, The Netherlands
| | - Joop J. A. van Loon
- Plant Sciences Group, Laboratory of Entomology, Wageningen University, Wageningen, The Netherlands
| | - Lisa Zoet
- Bestico B.V., Berkel en Rodenrijs, The Netherlands
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Pisa L, Goulson D, Yang EC, Gibbons D, Sánchez-Bayo F, Mitchell E, Aebi A, van der Sluijs J, MacQuarrie CJK, Giorio C, Long EY, McField M, Bijleveld van Lexmond M, Bonmatin JM. An update of the Worldwide Integrated Assessment (WIA) on systemic insecticides. Part 2: impacts on organisms and ecosystems. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:11749-11797. [PMID: 29124633 PMCID: PMC7921077 DOI: 10.1007/s11356-017-0341-3] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 09/25/2017] [Indexed: 05/15/2023]
Abstract
New information on the lethal and sublethal effects of neonicotinoids and fipronil on organisms is presented in this review, complementing the previous Worldwide Integrated Assessment (WIA) in 2015. The high toxicity of these systemic insecticides to invertebrates has been confirmed and expanded to include more species and compounds. Most of the recent research has focused on bees and the sublethal and ecological impacts these insecticides have on pollinators. Toxic effects on other invertebrate taxa also covered predatory and parasitoid natural enemies and aquatic arthropods. Little new information has been gathered on soil organisms. The impact on marine and coastal ecosystems is still largely uncharted. The chronic lethality of neonicotinoids to insects and crustaceans, and the strengthened evidence that these chemicals also impair the immune system and reproduction, highlights the dangers of this particular insecticidal class (neonicotinoids and fipronil), with the potential to greatly decrease populations of arthropods in both terrestrial and aquatic environments. Sublethal effects on fish, reptiles, frogs, birds, and mammals are also reported, showing a better understanding of the mechanisms of toxicity of these insecticides in vertebrates and their deleterious impacts on growth, reproduction, and neurobehaviour of most of the species tested. This review concludes with a summary of impacts on the ecosystem services and functioning, particularly on pollination, soil biota, and aquatic invertebrate communities, thus reinforcing the previous WIA conclusions (van der Sluijs et al. 2015).
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Affiliation(s)
| | - Dave Goulson
- School of Life Sciences, University of Sussex, Brighton, BN1 9QG, UK
| | - En-Cheng Yang
- Department of Entomology, National Taiwan University, Taipei, Taiwan
| | - David Gibbons
- RSPB Centre for Conservation of Science, The Lodge, Sandy, Bedfordshire, SG19 2DL, UK
| | - Francisco Sánchez-Bayo
- School of Life and Environmental Sciences, The University of Sydney, 1 Central Avenue, Eveleigh, NSW, 2015, Australia
| | - Edward Mitchell
- Laboratory of Soil Biodiversity, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
| | - Alexandre Aebi
- Laboratory of Soil Biodiversity, University of Neuchâtel, Rue Emile-Argand 11, 2000, Neuchâtel, Switzerland
- Anthropology Institute, University of Neuchâtel, Rue Saint-Nicolas 4, 2000, Neuchâtel, Switzerland
| | - Jeroen van der Sluijs
- Centre for the Study of the Sciences and the Humanities, University of Bergen, Postboks 7805, 5020, Bergen, Norway
- Department of Chemistry, University of Bergen, Postboks 7805, 5020, Bergen, Norway
- Copernicus Institute of Sustainable Development, Environmental Sciences, Utrecht University, Heidelberglaan 2, 3584 CS, Utrecht, The Netherlands
| | - Chris J K MacQuarrie
- Natural Resources Canada, Canadian Forest Service, 1219 Queen St. East, Sault Ste. Marie, ON, P6A 2E5, Canada
| | | | - Elizabeth Yim Long
- Department of Entomology, The Ohio State University, 1680 Madison Ave, Wooster, OH, 44691, USA
| | - Melanie McField
- Smithsonian Institution, 701 Seaway Drive Fort Pierce, Florida, 34949, USA
| | | | - Jean-Marc Bonmatin
- Centre National de la Recherche Scientifique (CNRS), Centre de Biophysique Moléculaire, Rue Charles Sadron, 45071, Orléans, France.
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Qu Y, Ullah F, Luo C, Monticelli LS, Lavoir AV, Gao X, Song D, Desneux N. Sublethal effects of beta-cypermethrin modulate interspecific interactions between specialist and generalist aphid species on soybean. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 206:111302. [PMID: 33080437 DOI: 10.1016/j.ecoenv.2020.111302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 08/21/2020] [Accepted: 09/06/2020] [Indexed: 06/11/2023]
Abstract
In agroecosystems, plant-pest interactions are at the basis of complex food webs, which can be affected by both biotic and abiotic factors. In the present study, we evaluated the impact of the insecticide beta-cypermethrin on interspecific interactions between the specialist aphid Aphis glycines and the generalist aphid Aulacorthum solani on soybean. Aphis glycines showed higher fecundity than A. solani on soybean and the aphids caused unbalanced reduction in population growth on each other. A sublethal concentration of beta-cypermethrin (LC5 for A. glycines) stimulated the reproduction of A. glycines but it did not impact the fecundity of A. solani. However, the LC5 of beta-cypermethrin enhanced the interspecific inhibition of fecundity between the two aphid species. Moreover, the two species showed different spatial distribution on soybean seedlings. Aphis glycines mainly aggregated on the stem of soybean plant while A. solani colonized soybean leaves. The LC5 of beta-cypermethrin drove A. solani migrating from soybean leaves to stems independently of interspecific competition. Aphis glycines facilitated A. solani colonization on soybean plant through impacting host susceptibility, and vice versa. Nevertheless, such facilitated colonization-induced susceptibility could be modulated through exposure to the LC5 of beta-cypermethrin. These findings hinted that the pyrethroid insecticide beta-cypermethrin has the potential to mediate the interspecific competition between specialist and generalist aphids (at the sublethal concentration of LC5), and that it could influence aphid population growth and community structure in soybean crops. This knowledge could contribute to rationalize application of insecticides and to optimize Integrated Pest Management in soybean.
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Affiliation(s)
- Yanyan Qu
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000, Nice, France.
| | - Farman Ullah
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Chen Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi Province, China
| | | | | | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Dunlun Song
- Department of Entomology, China Agricultural University, Beijing, 100193, China.
| | - Nicolas Desneux
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000, Nice, France
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Jameel M, Jamal K, Alam MF, Ameen F, Younus H, Siddique HR. Interaction of thiamethoxam with DNA: Hazardous effect on biochemical and biological parameters of the exposed organism. CHEMOSPHERE 2020; 254:126875. [PMID: 32361544 DOI: 10.1016/j.chemosphere.2020.126875] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
In the present scenario, insecticides/pesticides are used intensively to control the various insect pests. Indiscriminate use of these insecticides/pesticides affects the structure and function of the ecosystem. In this context, a thorough toxicological study of each insecticide/pesticide is a must to understand the hazardous effect of these chemicals on the target and non-target organisms. The present study was aimed to understand the hazardous effect of thiamethoxam against the Spodoptera litura. Different concentrations (20-80 μg/mL) of thiamethoxam were prepared, and fourth instar larvae of S. litura were allowed to feed for 12-72 h. We first examined the interaction of thiamethoxam with DNA. Next, treated and non-treated larvae were assessed for different biological parameters such as mortality, emergence, fecundity, fertility, longevities, and biochemical parameters. Our result showed that thiamethoxam directly interacts with the DNA and significantly influenced the different biological and biochemical parameters of exposed the organisms. We observed a significant change in stress enzymes such as SOD, CAT, and GST. A similar observation was also made with the oxidative marker for lipid damage, MDA and DNA damage, 8-OHdG, respectively. In conclusion, our results suggest that improper use of synthetic chemical insecticides influenced both biological and biochemical parameters through oxidative stress and probably damage the genetic material.
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Affiliation(s)
- Mohd Jameel
- Department of Zoology, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Khowaja Jamal
- Department of Zoology, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
| | - Md Fazle Alam
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Faisal Ameen
- Department of Biochemistry, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Hina Younus
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India
| | - Hifzur R Siddique
- Department of Zoology, Aligarh Muslim University, Aligarh, 202002, Uttar Pradesh, India.
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Choudhury RA, Sutherland AM, Hengel MJ, Parrella MP, Gubler WD. Imidacloprid Movement into Fungal Conidia Is Lethal to Mycophagous Beetles. INSECTS 2020; 11:insects11080496. [PMID: 32756374 PMCID: PMC7469163 DOI: 10.3390/insects11080496] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 01/14/2023]
Abstract
Simple Summary Some insects are beneficial to plants because they eat pest insects and disease-causing fungi; integrating the use of these insects into pest management can help to reduce the need for costly pesticide applications. Twenty-spotted ladybeetles eat plant pathogenic fungi, which helps to reduce disease severity for many economically important crops. In this study, we applied a systemic insecticide to the roots of pumpkin plants and monitored to see if it would be detectable in the spores of a plant pathogenic fungus and whether the insecticide-tainted fungal spores would hurt the ladybeetle larvae. We were able to chemically detect the systemic insecticide in the fungal spores up to 21 days after the plants had been treated with the fungus. We found that the ladybeetles raised on infected plants that had been treated with the systemic insecticide died more rapidly that ladybeetles that had been raised on uninfected or untreated plants. This study is the first to show that systemic insecticides can move from the roots of a plant, into a plant pathogenic fungus, and then have negative effects on a fungus-eating insect. It suggests that growers and land managers need to carefully consider the unintended consequences of insecticide applications. Abstract Applications of systemic pesticides can have unexpected direct and indirect effects on nontarget organisms, producing ecosystem-level impacts. We investigated whether a systemic insecticide (imidacloprid) could be absorbed by a plant pathogenic fungus infecting treated plants and whether the absorbed levels were high enough to have detrimental effects on the survival of a mycophagous beetle. Beetle larvae fed on these fungi were used to assess the survival effects of powdery mildew and imidacloprid in a factorial design. Fungal conidia were collected from treated and untreated plants and were tested for the presence and concentration of imidacloprid. The survival of beetles fed powdery mildew from imidacloprid-treated leaves was significantly lower than that of the beetles from all other treatments. Imidacloprid accumulated in fungal conidia and hyphae was detected at levels considered lethal to other insects, including coccinellid beetles. Water-soluble systemic insecticides may disrupt mycophagous insects as well as other nontarget organisms, with significant implications for biodiversity and ecosystem function.
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Affiliation(s)
- Robin A. Choudhury
- School of Earth, Environmental, and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;
| | - Andrew M. Sutherland
- University of California Cooperative Extension, Alameda County, Hayward, CA 94544, USA
- Correspondence:
| | - Matt J. Hengel
- Department of Environmental Toxicology, University of California, Davis, Davis, CA 95616, USA;
| | - Michael P. Parrella
- Department of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID 83844, USA;
| | - W. Douglas Gubler
- Department of Plant Pathology, University of California, Davis, Davis, CA 95616, USA;
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Qari S, Shehawy A. Measurement of biorational effect of imidacloprid on some aphids spp. as well as on wheat (Triticum aestivum L.) using biochemical parameters and ISSR-PCR. J Food Biochem 2020; 44:e13257. [PMID: 32483820 DOI: 10.1111/jfbc.13257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/22/2020] [Accepted: 04/06/2020] [Indexed: 12/18/2022]
Abstract
Aphid species are the most common insect pest infesting wheat plants. The LC values of imidacloprid against aphid spp., ISSR-PCR molecular markers and biochemical parameters in wheat plant in the present study were carried out. The LC50 of imidacloprid on Rhopalosiphum maidis, Rhopalosiphum padi, Sitobion avenae, and Schzaphis graminum were 71.626, 85.853, 91.05, and 115.806, respectively. While, the biochemical parameters in treated wheat plants including; total protein, RNA, and DNA contents increased in all experimental groups. Moreover, total carbohydrates and soluble sugar also increased in treated wheat seedlings. Also, the genetic diversity studies revealed that among six ISSR primers produced 36 amplified DNA fragments in a molecular weight range of (480-1545 bp). About 28 fragments were monomorphic, and 8 fragments were polymorphic. It can be concluded that the effectiveness of imidacloprid against sucking insects in treated wheat plants may due to few genetic variations and some metabolic changes in the Triticum. aestivum. PRACTICAL APPLICATIONS: The current study indicated that the potent efficacy of imidacloprid against different aphid spp. which were the most insect pest in wheat plants. As well as the application of imidacloprid as seed dressing insecticide, significantly increase carbohydrate, protein, amino acids, and RNA content in T. aestivum plants. While there was no significant increase in DNA in treated one. The recorded increase in these biochemical parameters may due to the increase in the gene expressions as a result of the application of such pesticides. These results explain the extra mechanism of the effect of imidacloprid against sucking insects. Also, the conducted results explain the effect of imidacloprid as a seed dressing insecticide in wheat crop protection from sucking insects and increasing seed germination, increasing seed wheat and number of seeds/spike.
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Affiliation(s)
- Sameer Qari
- Biology Department, Aljumum University College, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Ayman Shehawy
- Biology Department, Aljumum University College, Umm Al-Qura University, Makkah, Saudi Arabia.,Plant Protection Research Institute, Agricultural Research Center, Giza, Egypt
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Lu Z, Dong S, Li C, Li L, Yu Y, Yin S, Men X. Sublethal and transgenerational effects of sulfoxaflor on the demography and feeding behaviour of the mirid bug Apolygus lucorum. PLoS One 2020; 15:e0232812. [PMID: 32407334 PMCID: PMC7224452 DOI: 10.1371/journal.pone.0232812] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 04/22/2020] [Indexed: 11/24/2022] Open
Abstract
Sulfoxaflor, the first commercially available sulfoximine insecticide, has been used for the control of sap-feeding insect pests such as plant bugs and aphids on a variety of crops. However, its sublethal effects on the mirid bug Apolygus lucorum, one of the key insect pests of Bt cotton and fruit trees in China, have not been fully examined. Here, we evaluated the demography and feeding behaviour of A. lucorum exposed to sulfoxaflor. The leaf-dipping bioassay showed that the LC10 and LC30 of sulfoxaflor against 3rd-instar nymphs of this insect were 1.23 and 8.37 mg L-1, respectively. The LC10 significantly extended the nymphal duration and decreased the oviposition period by 5.29 days and female fecundity by 56.99% in the parent generation (F0). The longer duration of egg, 5th-instar nymphs, preadult, and male adult longevity were observed in the F1 generation (F1) at LC10. At the LC30, the duration of egg and 1st-instar nymph, female adult longevity, and oviposition period of the F1 were significantly shorter, while the nymphal duration in the F0 and duration of 5th-instar nymphs, preadult survival rate, and male adult longevity in the F1 significantly increased. The net reproductive rate (R0), intrinsic rate of increase (r), and finite rate of increase (λ) in the F1 were not significantly affected by these two concentrations, whereas the mean generation time (T) was lower at the LC30. Additionally, the probe counts and cells mixture feeding time were markedly lengthened by the LC10 and LC30, respectively, when A. lucorum nymphs exposed to sulfoxaflor fed on Bt cotton plants without insecticides. These results clearly indicate that sulfoxaflor causes sublethal effects on A. lucorum and the transgenerational effects depend on the tested concentrations.
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Affiliation(s)
- Zengbin Lu
- Maize Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Laboratory of Wheat and Maize/Key Laboratory of Biology and Genetic Improvement of Maize in Northern Yellow-Huai River Plain, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Song Dong
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Chao Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Lili Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yi Yu
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Shuyan Yin
- College of Plant Protection, Shandong Agricultural University, Tai’an, China
| | - Xingyuan Men
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
- * E-mail:
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Ricupero M, Desneux N, Zappalà L, Biondi A. Target and non-target impact of systemic insecticides on a polyphagous aphid pest and its parasitoid. CHEMOSPHERE 2020; 247:125728. [PMID: 32069706 DOI: 10.1016/j.chemosphere.2019.125728] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
Systemic insecticides are used to control agricultural pests globally and their non-target impact at non-lethal doses on beneficial arthropods has been recognized. We assessed the baseline toxicity of imidacloprid, thiamethoxam and sulfoxaflor-based insecticides on the polyphagous aphid pest, Aphis gossypii (Hemiptera: Aphididae), and their non-target effects on its main parasitoid, Aphidius colemani (Hymenoptera: Braconidae), evaluated by residual contact exposure to the median lethal (LC50), the low lethal (LC20) and the sublethal (LC1) concentrations of the three tested insecticides, earlier estimated for the target pest. The results showed that the LC50s for the aphid were 6.4 × 10-3, 5 × 10-3, 2.9 × 10-2 times lower compared to the label concentrations of imidacloprid, thiamethoxam and sulfoxaflor, respectively. LC50 of thiamethoxam caused the highest mortality rate on the parasitoid followed by sulfoxaflor, while imidacloprid had the lowest impact. No significant sublethal effects on reprodution were observed for A. colemani survived to the insecticide exposure. Our findings highlight the importance of case-specific evaluation to optimize pesticide applications in Integrated Pest Management packages taking into account the ecological services provided by biological control agents.
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Affiliation(s)
- Michele Ricupero
- University of Catania, Department of Agriculture, Food and Environment, Catania, Italy
| | - Nicolas Desneux
- Université Côte D'Azur, INRA (French National Institute for Agricultural Research), CNRS, UMR ISA, 06000, Nice, France
| | - Lucia Zappalà
- University of Catania, Department of Agriculture, Food and Environment, Catania, Italy.
| | - Antonio Biondi
- University of Catania, Department of Agriculture, Food and Environment, Catania, Italy
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Cui L, Wang Q, Wang Q, Wang L, Yuan H, Rui C. Cycloxaprid: a novel cis-nitromethylene neonicotinoid insecticide to control Bemisia tabaci. PEST MANAGEMENT SCIENCE 2020; 76:1705-1712. [PMID: 31758644 DOI: 10.1002/ps.5693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 11/14/2019] [Accepted: 11/20/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Bemisia tabaci is a worldwide insect pest with high ability to develop resistance to many insecticides. Cycloxaprid is a novel cis-configuration neonicotinoid insecticide that is effective against a wide range of imidacloprid-resistant pests. RESULTS The lethal and sublethal effects of cycloxaprid on B. tabaci B were estimated. Cycloxaprid showed higher toxicity against adult, nymph and egg of B. tabaci B than imidacloprid. And cycloxaprid provided better efficacies against B. tabaci than imidacloprid in fields. Moreover, cycloxaprid was similarly toxic to the relatively susceptible and imidacloprid-resistant populations. The LC50 of cycloxaprid against the resistant adult, nymph and egg were 6.2, 11.5 and 111.3 mg L-1 , respectively, while they were 5.7, 8.9 and 129.4 mg L-1 for the susceptible population. In addition, when resistant adult of B. tabaci B was treated with LC30 of cycloxaprid (3.2 mg L-1 ), the net reproductive rate and female ratio of F1 generation B. tabaci were reduced. Moreover, the age-specific fecundity demonstrated the highest fecundity sharply decreased in cycloxaprid (7.0 offspring/ day) treated group compared with the control (26.0 offspring/ day). CONCLUSIONS Our results indicated that cycloxaprid is a promising insecticide for the management of B. tabaci and insecticide-induced resurgence might not occur after exposure of B. tabaci to low sublethal concentrations of cycloxaprid. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Li Cui
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qiyuan Wang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qinqin Wang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Li Wang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Huizhu Yuan
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Changhui Rui
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Ullah F, Gul H, Tariq K, Desneux N, Gao X, Song D. Thiamethoxam induces transgenerational hormesis effects and alteration of genes expression in Aphis gossypii. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 165:104557. [PMID: 32359559 DOI: 10.1016/j.pestbp.2020.104557] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 06/11/2023]
Abstract
Insecticide induced-hormesis, a bi-phasic phenomenon characterized by low dose stimulation and high dose inhibition following exposure to insecticide, is crucial to insect pest resurgence. In this study, the effects of low or sublethal concentrations of thiamethoxam on biological traits and genes expression were investigated for Aphis gossypii Glover following 72 h exposures. Leaf-Dip bioassay results showed that thiamethoxam was very toxic against adult A. gossypii with an LC50 of 1.175 mg L-1. The low lethal (LC15) and sublethal (LC5) concentrations of thiamethoxam significantly reduced longevity and fecundity of the directly exposed aphids. However, stimulatory effects on pre-adult stage, longevity, and fertility were observed in the progeny generation (F1) of A. gossypii, when parental aphids (F0) were exposed to LC15 of thiamethoxam. Subsequently, biological traits such as intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) increased significantly to F1 individuals due to LC15 treatment. No significant responses were observed for LC5 of thiamethoxam. The LC15 of thiamethoxam significantly increased the expression level of vitellogenin and ecdysone receptors genes in progeny generation, while no effects were observed for treatment with LC5. Additionally, the expression levels of P450 genes including CYP6CY14, CYP6CZ1, CYP6DC1, CYP6CY9, and CYP6DD1 were up-regulated in the exposed aphids. Taken together, our results show the hormetic effects of thiamethoxam on F1 individuals, which might be due to the intermittent changes in expression of genes involved in fertility, growth and insecticide detoxification in A. gossypii.
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Affiliation(s)
- Farman Ullah
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Hina Gul
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Kaleem Tariq
- Department of Agriculture, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan; Entomology and Nematology Department, Steinmetz Hall, University of Florida, Gainesville, FL 32611, United States of America; USDA/ARS, Center for Medical, Agricultural and Veterinary Entomology, 1700 SW 23rd Drive, Gainesville, FL 32608, USA
| | - Nicolas Desneux
- Université Côte d'Azur, INRAE, CNRS, UMR ISA, 06000 Nice, France
| | - Xiwu Gao
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Dunlun Song
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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Valmorbida I, Muraro DS, Hodgson EW, O'Neal ME. Soybean aphid (Hemiptera: Aphididae) response to lambda-cyhalothrin varies with its virulence status to aphid-resistant soybean. PEST MANAGEMENT SCIENCE 2020; 76:1464-1471. [PMID: 31659872 DOI: 10.1002/ps.5661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/04/2019] [Accepted: 10/25/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Soybean aphid, Aphis glycines, is an invasive insect in North America, considered one of the most important pests of soybean. Their management relies heavily on foliar insecticides, but there is growing effort to expand these tools to include aphid-resistant varieties. We explored if the LC50 and LC25 of lambda-cyhalothrin varied between virulent (resistant to Aphis glycines (Rag) soybeans) and avirulent (susceptible to Rag-genes soybeans) populations of soybean aphid with a leaf-dip bioassay. We also investigated the response to the LC25 of lambda-cyhalothrin on adults (F0) and their progeny (F1) for both avirulent and virulent soybean aphid. RESULTS The LC50 of the virulent aphid population was significantly higher compared with the LC50 of the avirulent population. The LC25 significantly reduced fecundity of the F0 generation of avirulent soybean aphid, but no significant effect was observed for virulent aphids. In addition, the LC25 significantly shortened the adult pre-oviposition period (APOP) and lengthened the total pre-oviposition period (TPOP) of avirulent aphids, while the mean generation time (T) was significantly increased. For the virulent aphid, sublethal exposure significantly lengthened development time of first and third instars, TPOP, and adult longevity. In addition, all demographic parameters of virulent soybean aphid were significantly affected when they were exposed to the LC25 of lambda-cyhalothrin. CONCLUSION Our results demonstrate lambda-cyhalothrin is less toxic to virulent aphids and exposure to the LC25 can trigger hormesis, which may have implications for the long-term management of this pest with this insecticide as well as with aphid-resistant varieties of soybean. © 2019 Society of Chemical Industry.
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Affiliation(s)
| | - Dionei S Muraro
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), São Paulo, Brazil
| | - Erin W Hodgson
- Department of Entomology, Iowa State University, Ames, IA, USA
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Resende-Silva GA, Joseph DA, Guedes RNC, Cutler GC. Impact of Imidacloprid Soil Drenching on Survival, Longevity, and Reproduction of the Zoophytophagous Predator Podisus maculiventris (Hemiptera: Pentatomidae: Asopinae). JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:108-114. [PMID: 31675095 DOI: 10.1093/jee/toz283] [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: 07/24/2019] [Indexed: 06/10/2023]
Abstract
Systemic insecticides when applied as seed treatments or soil drenches are often more toxicologically selective for natural enemies than target pests. This may not be the case, however, for omnivorous predators, which are at risk of extended exposure to systemically applied pesticides through ingestion while feeding on treated plants for nutrients or water. Such exposure may kill or have sublethal consequences for these natural enemies, compromising their role as biocontrol agents of agricultural pest species. The spined soldier bug, Podisus maculiventris (Say) (Hemiptera: Pentatomidae: Asopinae), is an important zoophytophagous biocontrol agent (i.e., able to substitute zoophagy by phytophagy for survival) that may be exposed to systemic insecticides in many agricultural systems. We, therefore, examined effects on P. maculiventris following exposure to cabbage plants subject to soil-drench treatments with imidacloprid, a systemic neonicotinoid insecticide. Predator survival, development, body weight, and reproduction were recorded. Imidacloprid significantly affected nymph survival and adult emergence, but not duration of the nymphal period or adult body weight. At one-twentieth the recommended field rate for whitefly and aphid management, imidacloprid treatments reduced longevity, fecundity, and fertility of female predators. These findings demonstrate that soil treatments with systemic insecticide can negatively impact zoophytophagous natural enemies.
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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
| | - Deney A Joseph
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
| | | | - G Christopher Cutler
- Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada
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Lu Z, Dong S, Li C, Li L, Yu Y, Men X, Yin S. Sublethal and transgenerational effects of dinotefuran on biological parameters and behavioural traits of the mirid bug Apolygus lucorum. Sci Rep 2020; 10:226. [PMID: 31937822 PMCID: PMC6959236 DOI: 10.1038/s41598-019-57098-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 12/16/2019] [Indexed: 11/17/2022] Open
Abstract
The mirid bug, Apolygus lucorum, has become a major pest of many crops and fruit trees since the widespread adoption of Bt cotton in northern China. Neonicotinoid insecticides, such as dinotefuran, applied to control this pest may show sublethal effects, but evidence for such effects is lacking. Here, we investigated the sublethal and transgenerational effects of dinotefuran on biological parameters and feeding behavioural traits of A. lucorum using the age-stage, two-sex life table and electrical penetration graphs (EPGs), respectively. The LC10 and LC30 of dinotefuran against 3rd-instar nymphs of A. lucorum were 14.72 and 62.95 mg L−1, respectively. These two concentrations significantly extended the development duration from 3rd-instar nymph to adult in parent generation (F0). LC30 also increased the oviposition period and male adult longevity and reduced nymphal survival rate in the F0. For offspring generation (F1), the egg duration, preadult duration, and total preoviposition period were significantly lower at LC10 than in the control, and the egg duration, duration of 4th-instar nymphs, preadult duration, oviposition period, and fecundity were also decreased at LC30. However, the four demographic parameters of F1 generation, namely, net reproductive rate (R0), intrinsic rate of increase (r), finite rate of increase (λ), and mean generation time (T), were not affected by dinotefuran. The significant differences in the number of probes and duration of each of four feeding waveforms failed to be detected when A. lucorum nymphs treated by dinotefuran feed on Bt cotton plants without insecticide exposure. Overall, the dinotefuran concentrations tested here have sublethal, but no transgenerational impacts on A. lucorum.
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Affiliation(s)
- Zengbin Lu
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.,Maize Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Laboratory of Wheat and Maize/Key Laboratory of Biology and Genetic Improvement of Maize in Northern Yellow-Huai River Plain, Ministry of Agriculture and Rural Affairs, China, Jinan, 250100, China
| | - Song Dong
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Chao Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Lili Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Yi Yu
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Xingyuan Men
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.
| | - Shuyan Yin
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, China.
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Toxicity and sublethal effects of two plant allelochemicals on the demographical traits of cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae). PLoS One 2019; 14:e0221646. [PMID: 31743338 PMCID: PMC6863539 DOI: 10.1371/journal.pone.0221646] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 08/12/2019] [Indexed: 01/21/2023] Open
Abstract
Plant allelochemicals are a group of secondary metabolites produced by plants to defend against herbivore. The mortality of two plant allelochemicals (tannic acid and gossypol) on the cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), were investigated using feeding assays and the sublethal effects were evaluated using the age-stage, two-sex life table approach. Tannic acid and gossypol have deleterious effects on A. gossypii, and as the concentrations increased, the mortality of cotton aphid increased. The life history traits of A. gossypii including the developmental duration of each nymph stage, the longevity, oviposition days, total preadult survival rate and adult pre-oviposition period were not significantly affected by sublethal concentration of tannic acid (20 mg/L) and gossypol (50 mg/L), while the population parameters (r, λ and R0) were significantly affected by these two plant allelochemicals. Furthermore, tannic acid can increase the pre-adult duration time and TPOP but reduce the fecundity of A. gossypii significantly compared to the control and gossypol treatment groups. These results are helpful for comprehensively understanding the effects of plant allelochemicals on A. gossypii.
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Filipović A, Mrdaković M, Ilijin L, Vlahović M, Todorović D, Grčić A, Perić-Mataruga V. Effect of fluoranthene on antioxidative defense in different tissues of Lymantria dispar and Euproctis chrysorrhoea larvae. Comp Biochem Physiol C Toxicol Pharmacol 2019; 224:108565. [PMID: 31276812 DOI: 10.1016/j.cbpc.2019.108565] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 06/25/2019] [Accepted: 06/29/2019] [Indexed: 12/21/2022]
Abstract
This study examined the effect of long-term exposure to environmentally relevant concentrations of dietary fluoranthene (6.7 and 67 ng / g dry food weight) on defense mechanisms of the polyphagous forest insects Lymantria dispar L. and Euproctis chrysorrhoea L. The activities and expression of isoforms of superoxide dismutase (SOD) and catalase (CAT), the activities of glutathione S-transferase (GST) and glutathione reductase (GR), and total glutathione content (GSH) were determined in the whole midgut and midgut tissue, while SOD and CAT activities were assessed in hemolymph of the larvae. The results showed significant changes of enzyme activities, with more pronounced responses in larval midgut tissues, and between-species differences in patterns of response. Significantly increased activity of SOD was recorded in the whole midgut and midgut tissue of L. dispar larvae, as well as in midgut tissue of E. chrysorrhoea larvae. Fluoranthene increased CAT activity in midgut tissue of L. dispar larvae, and in the whole midgut and midgut tissue of E. chrysorrhoea larvae. Different expression patterns were detected for enzyme isoforms in tissues of larvae exposed to dietary fluoranthene. Total GSH content and GST activity increased in E. chrysorrhoea larval midgut tissue. Significantly decreased SOD activity in hemolymph of L. dispar larvae, and opposite changes in CAT activity were recorded in the hemolymph of larvae of two insect species. The tissue-specific responses of enzymes to dietary fluoranthene, recorded in each species, enabled the larvae to overcome the pollutant induced oxidative stress, and suggest further assessment of their possible use as early-warning signals of environmental pollution.
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Affiliation(s)
- Aleksandra Filipović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia.
| | - Marija Mrdaković
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Larisa Ilijin
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Milena Vlahović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Dajana Todorović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Anja Grčić
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Vesna Perić-Mataruga
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
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Hatami M, Hosseini SM, Ghorbanpour M, Kariman K. Physiological and antioxidative responses to GO/PANI nanocomposite in intact and demucilaged seeds and young seedlings of Salvia mirzayanii. CHEMOSPHERE 2019; 233:920-935. [PMID: 31340420 DOI: 10.1016/j.chemosphere.2019.05.268] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/18/2019] [Accepted: 05/29/2019] [Indexed: 06/10/2023]
Abstract
The current study aimed to investigate the impacts of different concentrations of GO/PANI nanocomposites (25, 50 and 100 mg L-1), in comparison with GO and PANI, on seed germination behaviors, morpho-physiological and biochemical traits in intact (mucilaginous) and demucilaged seeds, and young seedlings of the medicinal plant Salvia mirzayanii. Upon exposure to GO, seed germination was delayed and reduced, and growth attributes (root and shoot length, shoot fresh weight, and total chlorophyll content) declined, all of which could be attributed to the reductions in water uptake and oxidative stress particularly in demucilaged seeds. A hormetic dose-dependent response was observed for the growth traits in both intact and demucilaged seedlings upon exposure to GO/PANI concentrations, i.e. low-concentration stimulation and high-concentration repression. Elevated levels of H2O2 in shoot tissue of the seedlings exposed to GO and high concentration of GO/PANI, in comparison with those exposed to low levels of GO/PANI and control, were linked with the activities of the antioxidant enzymes SOD, CAT, POD, and total phenolics. Overall, the results showed high toxicity of GO on germination and early growth of S. mirzayani that was more evident in demucilaged seedlings, whereas GO/PANI stimulated germination, and the effects on seedling growth were stimulatory or inhibitory depending on the application dose and presence of mucilage. Furthermore, the capacity of GO/PANI nanocomposites to improve germination and cause a regular porosity pattern in roots accompanied by improved water uptake and early establishment of S. mirzayanii propose potential implications of GO/PANI nanocomposites for seeds/plants in drought-prone ecosystems.
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Affiliation(s)
- Mehrnaz Hatami
- Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, 38156-8-8349, Arak, Iran.
| | - Sayed Mohsen Hosseini
- Department of Chemical Engineering. Faculty of Engineering, Arak University, Arak, Iran
| | - Mansour Ghorbanpour
- Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, 38156-8-8349, Arak, Iran
| | - Khalil Kariman
- School of Agriculture and Environment, The University of Western Australia, Crawley, WA, 6009, Australia.
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Wang Z, Dai P, Yang X, Ruan CC, Biondi A, Desneux N, Zang LS. Selectivity of novel and traditional insecticides used for management of whiteflies on the parasitoid Encarsia formosa. PEST MANAGEMENT SCIENCE 2019; 75:2716-2724. [PMID: 30784200 DOI: 10.1002/ps.5380] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/29/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Encarsia formosa Gahan is the most important parasitoid exploited for the control of whitefly pests of vegetable crops. However, the non-target effects of recently developed insecticides for controlling whiteflies toward this biocontrol agent is little documented. Here we evaluated the susceptibility of E. formosa adults and juveniles to eight commonly used insecticides against whiteflies. RESULTS Residual toxicity tests on glass showed that E. formosa adults were susceptible (over 98% mortality after 6 h treated) to field concentrations of the tested neonicotinoids (imidacloprid, acetamiprid, nitenpyram and thiamethoxam), abamectin, cyantraniliprole, and sulfoxaflor at their field concentrations. Pyriproxyfen was harmless to both adult and pupae of E. formosa. A risk quotient analysis showed that toxicity of pyriproxyfen to E. formosa adults was the lowest, followed by acetamiprid and cyantraniliprole. In the leaf residues test, mortality of E. formosa adults under all insecticides decreased when the residue age increased. Interestingly, E. formosa experiencing contact with the residues of most insecticides, except pyriproxyfen and abamectin, parasitized significantly more hosts 5-days after treatment, suggesting a hormetic effect on parasitism. CONCLUSION The risk assessment of insecticides indicated that pyriproxyfen and cyantraniliprole were the least toxic to E. formosa. Our results suggest that the inclusion of the insecticides in sustainable integrated pest management programs of whiteflies should be carefully evaluated on a case-by-case basis. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Zhuo Wang
- Engineering Research Center of Natural Enemies, Institute of Biological Control, Jilin Agricultural University, Changchun, China
| | - Peng Dai
- Engineering Research Center of Natural Enemies, Institute of Biological Control, Jilin Agricultural University, Changchun, China
| | | | - Chang-Chun Ruan
- Engineering Research Center of Natural Enemies, Institute of Biological Control, Jilin Agricultural University, Changchun, China
| | - Antonio Biondi
- Department of Agriculture, Food and Environment, University of Catania, Catania, Italy
| | - Nicolas Desneux
- INRA (French National Institute for Agricultural Research), Université Côte d'Azur, CNRS, UMR 1355-7254, Institut Sophia Agrobiotech, Sophia-Antipolis, France
| | - Lian-Sheng Zang
- Engineering Research Center of Natural Enemies, Institute of Biological Control, Jilin Agricultural University, Changchun, China
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Impact of low lethal concentrations of buprofezin on biological traits and expression profile of chitin synthase 1 gene (CHS1) in melon aphid, Aphis gossypii. Sci Rep 2019; 9:12291. [PMID: 31444364 PMCID: PMC6707215 DOI: 10.1038/s41598-019-48199-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/30/2019] [Indexed: 02/06/2023] Open
Abstract
Buprofezin, a chitin synthesis inhibitor that can be used for the control of hemipteran pests, especially melon aphid, Aphis gossypii. The impact of low lethal concentrations of buprofezin on the biological parameters and expression profile of CHS1 gene were estimated for two successive generations of A. gossypii. The present result shows that the LC15 and LC30 of buprofezin significantly decreased the fecundity and longevity of both generations. Exposure of F0 individuals to both concentrations delay the developmental period in F1. Furthermore, the survival rate, intrinsic rate of increase (r), finite rate of increase (λ), and net reproductive rate (R0) were reduced significantly in progeny generation at both concentrations. However, the reduction in gross reproductive rate (GRR) was observed only at LC30. Although, the mean generation time (T) prolonged substantially at LC30. Additionally, expression of the CHS1 gene was significantly increased in F0 adults. Significant increase in the relative abundance of CHS1 mRNA transcript was also observed at the juvenile and adult stages of F1 generation following exposure to LC15 and LC30. Therefore, our results show that buprofezin could affect the biological traits by diminishing the chitin contents owing to the inhibition of chitin synthase activity in the succeeding generation of melon aphid.
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Skouras PJ, Brokaki M, Stathas GJ, Demopoulos V, Louloudakis G, Margaritopoulos JT. Lethal and sub-lethal effects of imidacloprid on the aphidophagous coccinellid hippodamia variegata. CHEMOSPHERE 2019; 229:392-400. [PMID: 31082706 DOI: 10.1016/j.chemosphere.2019.05.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/03/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
Hippodamia variegata is one of the most abundant ladybird species in Greece, preying on several aphid species and other arthropods, of which many are pests of cultivated plants. Imidacloprid, a neonicotinoid insecticide, is commonly used for controlling sucking insects; at the same time, however, it can cause various sub-lethal effects on non-target organisms. The development of IPM programs against pests requires an evaluation of the side effects of insecticides on natural enemies. We evaluated the sub-lethal effects of imidacloprid on H. variegata. Our results demonstrate that imidacloprid at a LC10 (3.92 mg (a.i.) L-1 and LC30 (8.69 mg (a.i.) L-1) decreased adult longevity and survival rate. In addition, demographic parameters, such as the intrinsic rate of increase (r), finite rate of increase (λ) and net reproductive rate (R0), were reduced when exposed to sub-lethal concentrations of imidacloprid. These results demonstrate a negative influence of imidacloprid at sub-lethal concentrations on H. variegata which could reduce biological control services provided by this predator.
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Affiliation(s)
- Panagiotis J Skouras
- Laboratory of Agricultural Entomology and Zoology, Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24 100, Antikalamos, Kalamata, Greece.
| | - Marina Brokaki
- Laboratory of Agricultural Entomology and Zoology, Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24 100, Antikalamos, Kalamata, Greece
| | - George J Stathas
- Laboratory of Agricultural Entomology and Zoology, Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24 100, Antikalamos, Kalamata, Greece
| | - Vasilios Demopoulos
- Laboratory of Plant Protection Products, Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24 100, Antikalamos, Kalamata, Greece
| | - Giannis Louloudakis
- Laboratory of Agricultural Entomology and Zoology, Department of Agricultural Technology, Technological Educational Institute of Peloponnese, 24 100, Antikalamos, Kalamata, Greece
| | - John T Margaritopoulos
- Department of Plant Protection, Institute of Industrial and Fodder Crops, Hellenic Agricultural Organization "DEMETER", NAGREF, Volos, Greece
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He F, Sun S, Tan H, Sun X, Qin C, Ji S, Li X, Zhang J, Jiang X. Chlorantraniliprole against the black cutworm Agrotis ipsilon (Lepidoptera: Noctuidae): From biochemical/physiological to demographic responses. Sci Rep 2019; 9:10328. [PMID: 31316142 PMCID: PMC6637144 DOI: 10.1038/s41598-019-46915-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 07/01/2019] [Indexed: 11/09/2022] Open
Abstract
Agrotis ipsilon (Lepidoptera: Noctuidae) is a major underground pest that damages many agricultural crops in China and other countries. A diet-incorporation-based bioassay was conducted to evaluate the sublethal effects of the novel anthranilic diamide chlorantraniliprole on the nutritional physiology, enzymatic properties and population parameters of this cutworm. Chlorantraniliprole exhibited signs of active toxicity against third instar larvae of A. ipsilon, and the LC50 was 0.187 μg.g-1 of artificial diet after treatment for 72 h. The development time of the larval, pupal and adult stages was significantly affected after chlorantraniliprole exposure, compared to the control treatment. Relative to the control treatment, chlorantraniliprole decreased pupal and adult emergence rates, fecundity and fertility and increased the proportions of developmental deformities, the adult preoviposition period (APOP) and the total preoviposition period (TPOP). Furthermore, compared to those treated with the control, A. ipsilon larvae treated with low doses of chlorantraniliprole decreased food utilization and nutrient content (protein, lipid, carbohydrate, trehalose), showed lower pupal weights and growth rates. Compared with the control treatment, chlorantraniliprole significantly reduced digestive enzyme activities and observably increased detoxifying and protective enzyme activities and hormone titers. Importantly, these chlorantraniliprole-induced changes affected life table parameters of the cutworm. These results suggest that chlorantraniliprole at low concentrations can impair A. ipsilon development duration, normal food consumption and digestion process, enzymatic properties, hormone levels, fecundity and population levels. Chlorantraniliprole exhibit the potential to be exploited as a control strategy for this cutworm.
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Affiliation(s)
- Falin He
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Shiang Sun
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Haili Tan
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xiao Sun
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Chao Qin
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Shoumin Ji
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xiangdong Li
- Shandong Provincial Key Laboratory of Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Jiwang Zhang
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Xingyin Jiang
- Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
- Research Center of Pesticide Environmental Toxicology, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
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Mohammed AAAH, Desneux N, Monticelli LS, Fan Y, Shi X, Guedes RNC, Gao X. Potential for insecticide-mediated shift in ecological dominance between two competing aphid species. CHEMOSPHERE 2019; 226:651-658. [PMID: 30965243 DOI: 10.1016/j.chemosphere.2019.03.114] [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: 12/11/2018] [Revised: 03/15/2019] [Accepted: 03/16/2019] [Indexed: 06/09/2023]
Abstract
Competition is a key structuring component of biological communities, which is affected by both biotic and abiotic environmental stressors. Among the latter, anthropic stressors and particularly pesticides are noteworthy due to their intrinsic toxicity and large use in agroecosystems. However this issue has been scarcely documented so far. In this context, we carried out experiments under laboratory conditions to evaluate stress imposed by the neonicotinoid insecticide imidacloprid on intra and interspecific competition among two major wheat pest aphids. The bird cherry-oat aphid Rhopalosiphum padi L. and the English grain aphid Sitobion avenae F. were subjected to competition on wheat seedlings under varying density combinations of both species and subjected or not to imidacloprid exposure. Intraspecific competition does take place without insecticide exposure, but so does interspecific competition between both aphid species with R. padi prevailing over S. avenae. Imidacloprid interfered with both intra and interspecific competition suppressing the former and even the latter for up to 14 days, but not afterwards when a shift in dominance takes place favoring S. avenae over R. padi, in contrast with the interspecific competition without imidacloprid exposure. These findings hinted that insecticides are indeed able to mediate species interaction and competition influencing community structure and raising management concerns for favoring potential secondary pest outbreaks.
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Affiliation(s)
- Abd Allah A H Mohammed
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Nicolas Desneux
- INRA (French National Institute for Agricultural Research), Université Côte d'Azur, CNRS, UMR 1355-7254 Institute Sophia Agrobiotech, Sophia Antipolis 06903, France.
| | - Lucie S Monticelli
- INRA (French National Institute for Agricultural Research), Université Côte d'Azur, CNRS, UMR 1355-7254 Institute Sophia Agrobiotech, Sophia Antipolis 06903, France
| | - Yinjun Fan
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Xueyan Shi
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Raul N C Guedes
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil
| | - Xiwu Gao
- Department of Entomology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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Feng WB, Bong LJ, Dai SM, Neoh KB. Effect of imidacloprid exposure on life history traits in the agricultural generalist predator Paederus beetle: Lack of fitness cost but strong hormetic effect and skewed sex ratio. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:390-400. [PMID: 30849660 DOI: 10.1016/j.ecoenv.2019.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 02/21/2019] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
A trade-off between life history traits in the evolution of insecticide resistance is common in insects because energy acquisition is mainly channeled for detoxification enzyme production. In addition, sublethal exposure to insecticides may have an effect on the physiology and behaviors of surviving insects. Similar to other agricultural pests, pesticide use may have led to insecticide resistance in populations of Paederus fuscipes Curtis. In this study, we determined the median lethal time of 10 field-collected strains in Taiwan for three insecticides that are commonly employed to manage agricultural pests. We determined that the susceptibility of these strains to cyhalothrin and fenitrothion were similar, with resistance ratios (RRs) ranging from 1 to 4; however, significantly different to imidacloprid (RRs: 1-16). The effect of imidacloprid resistance on the life history traits studied of Paederus beetles was limited; only a prolonged egg incubation period, and adult longevity decreased as imidacloprid resistance increased. Regarding sublethal exposure to imidacloprid, adult sex ratios were female biased in most combinations, though nonsignificant. The quality of offspring, particularly the length of eggs significantly decreased. In addition, a hormetic effect was apparent when the individual was exposed to LT25 and LT50; mean fecundity per female increased from 12.80 ± 8.95 (± standard error [SE]) to 42.70 ± 13.77 eggs compared with that of the control (7.10 ± 1.32). However, the hormetic effect was inconsistent among the tested strains, possibly because of the difference in insecticide resistance levels given that reproductive compensation was absent among the resistant population.
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Affiliation(s)
- Wen-Bin Feng
- Department of Entomology, National Chung Hsing University, 145, Xingda Rd. South District, Taichung 402, Taiwan
| | - Lee-Jin Bong
- National Mosquito-borne Diseases Control Research Center, National Health Research Institute, Zhunan, Miaoli County, Taiwan, ROC
| | - Shu-Mei Dai
- Department of Entomology, National Chung Hsing University, 145, Xingda Rd. South District, Taichung 402, Taiwan
| | - Kok-Boon Neoh
- Department of Entomology, National Chung Hsing University, 145, Xingda Rd. South District, Taichung 402, Taiwan.
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Waqas MS, Qian L, Shoaib AAZ, Cheng X, Zhang Q, Elabasy ASS, Shi Z. Lethal and Sublethal Effects of Neonicotinoid Insecticides on the Adults of Phenacoccus solenopsis (Hemiptera: Pseudococcidae) on Tomato Plants. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:1314-1321. [PMID: 30753639 DOI: 10.1093/jee/toy427] [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: 08/08/2018] [Indexed: 06/09/2023]
Abstract
Acetamiprid and imidacloprid are two important neonicotinoid insecticides that are widely utilized under field conditions for the management of sucking insect pests, including the solenopsis mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae). Although some information is available regarding their lethal effects, nothing is currently known about the sublethal effects of these insecticides. We, therefore, performed a series of experiments to test the lethal and sublethal effects of these chemicals on oviposition duration and fecundity. We also assessed sublethal effects on feeding behavior using the electrical penetration graph (EPG) technique. The results of this study reveal that acetamiprid toxicity is higher than imidacloprid and that both insecticides have negative effects on the oviposition, fecundity, and feeding behavior of P. solenopsis when applied at sublethal dosages. These chemicals also significantly reduce oviposition duration and fecundity and significantly prolong nonprobing duration, increase penetration problems, and reduce phloem and xylem feeding activities when compared with adults exposed to just water. No significant differences were detected in all waveform durations and events when adults previously exposed to foliage treated with each of these two insecticides were compared. The results of this study, therefore, suggest that both insecticides are capable of protecting crops from mealybug damage by not only killing these pests directly but also reducing their fecundity and inhibiting feeding behaviors when applied at sublethal dosages.
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Affiliation(s)
- Muhammad Saad Waqas
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Lixin Qian
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Ali Ahmed Zaky Shoaib
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
- Plant Protection Research Institute, Agricultural Research Centre, Cairo, Egypt
| | - Xinlai Cheng
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Qianqian Zhang
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Asem Saad Saad Elabasy
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
- Plant Protection Research Institute, Agricultural Research Centre, Cairo, Egypt
| | - Zuhua Shi
- Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
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Contact application of neonicotinoids suppresses the predation rate in different densities of prey and induces paralysis of common farmland spiders. Sci Rep 2019; 9:5724. [PMID: 30952926 PMCID: PMC6450932 DOI: 10.1038/s41598-019-42258-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 03/26/2019] [Indexed: 01/09/2023] Open
Abstract
Neonicotinoids are very effective in controlling crop pests but have adverse effects on predators and pollinators. Spiders are less sensitive to neonicotinoids compared to insects because of the different structure of their acetylcholine receptors, the binding targets of neonicotinoids. We tested whether short-term exposure to neonicotinoids affected the predation rate in different densities of prey of spiders and led to their paralysis or eventual death. To examine these effects, we topically exposed dominant epigeic, epiphytic and sheet-weaving farmland spiders to four widely used neonicotinoids (imidacloprid, thiamethoxam, acetamiprid and thiacloprid). We applied the neonicotinoids at concentrations recommended by the manufacturers for spray application under field conditions. Short-term exposure to the formulations of all four tested neonicotinoids had adverse effects on the predation rate of spiders, with imidacloprid (Confidor) associated with the most severe effects on the predation rate and exhibiting partial acute lethality after one hour (15–32%). Acetamiprid also displayed strong sublethal effects, particularly when applied dorsally to Philodromus cespitum. Day-long exposure to dorsally applied acetamiprid or thiacloprid led to paralysis or death of multiple Linyphiidae spp., with the effects particularly prominent in males. To conclude, we provided multiple lines of evidence that short-term exposure to neonicotinoids, which were applied at recommended field concentrations, caused severe health effects or death in multiple families of spiders. Even acetamiprid caused strong effects, despite being subject to less strict regulations in the European Union, compared with those for imidacloprid because of claims of its negligible off-target toxicity.
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Liang PZ, Ma KS, Chen XW, Tang CY, Xia J, Chi H, Gao XW. Toxicity and Sublethal Effects of Flupyradifurone, a Novel Butenolide Insecticide, on the Development and Fecundity of Aphis gossypii (Hemiptera: Aphididae). JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:852-858. [PMID: 30590572 DOI: 10.1093/jee/toy381] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Indexed: 06/09/2023]
Abstract
The cosmopolitan pest Aphis gossypii (Glover) causes considerable economic losses on various crops by its feeding damage and transmitting diseases around the world. Flupyradifurone is a novel butenolide pesticide; its toxicity on A. gossypii parent generation (F0) was estimated following treatment with LC25 concentration for 48 h. The adult longevity and fecundity of the F0 individuals treated by flupyradifurone showed no significant decrease in comparison with the control. Life table method was used to evaluate the sublethal effects on progeny population (F1). Results showed that the development time of the fourth instar and the preadult as well as the total pre-reproductive period were significantly prolonged, while their fecundity was significantly decreased compared with the control. Additionally, the intrinsic rate of increase (r), the finite rate of increase (λ), and the net reproductive rate (R0) of F1 were all significantly lower in the group treated by LC25 than in the control group. These results reveal that the sublethal concentration of flupyradifurone could suppress the population growth of A. gossypii and indicate that this novel insecticide may be as a useful tool in pest management.
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Affiliation(s)
- Ping-Zhuo Liang
- Department of Entomology, China Agricultural University, Beijing, PR China
| | - Kang-Sheng Ma
- Department of Entomology, China Agricultural University, Beijing, PR China
| | - Xue-Wei Chen
- Department of Entomology, China Agricultural University, Beijing, PR China
| | - Chun-Yan Tang
- Department of Entomology, China Agricultural University, Beijing, PR China
| | - Jin Xia
- Department of Entomology, China Agricultural University, Beijing, PR China
| | - Hsin Chi
- Department of Plant Production and Technologies, Faculty of Agricultural Sciences and Technologies, Niğde Ömer Halisdemir University, Niğde, Turkey
| | - Xi-Wu Gao
- Department of Entomology, China Agricultural University, Beijing, PR China
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