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Survival, development and reproduction of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) under effects of insecticides used in tomato plants

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Abstract

Agriculture depends on the correct use of different methods for pest control, however the cultivation methods adopted for Solanaceae demands numerous pesticide applications. These products can be either harmful or selective to beneficial organisms, such as Coccinellidae predators. The aim of this study was to assess the physiological selectivity of insecticides, registered for tomato pest control, on Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae). The maximum recommended field dosage of the insecticides spinetoram, spiromesifen, methoxyfenozide, metaflumizone, tebufenozide and methomyl was used. They were sprayed on eggs, third instar larvae, pupae and adults of H. axyridis using Potter´s tower; control treatment consisted of water. Methoxyfenozide didn’t reduce any biological feature of the predator. Spiromesifen only reduced survival over time when sprayed on third instar larvae. Spinetoram shortened larval period and reduced survival of adults. When sprayed on larvae, metaflumizone reduced larval survival. Tebufenozide reduced egg viability, pupal period and larval survival over time. It is concluded that methoxyfenozide, spiromesifen and spinetoram are the least toxic to H. axyridis, and their usage should be prioritized in integrated pest management (IPM) programs; both tebufenozide and metaflumizone are harmful to some important biological features of the predator. Methomyl is highly toxic in controlled conditions, so its toxicity to H. axyridis should be confirmed in field and greenhouse tests, we also suggest further studies with the other compounds in different concentration and route of exposure.

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Acknowledgements

This research was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) – Financial code 306892/2017-0, and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) – Financial code CAG APQ – 02118-16.

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TGS and GAC conceived research. JRS, LBM and LLRL assistance in the creation and maintenance of insects, the assembly and conduct of experiments, as well as the collection and tabulation of data. TGS, GAC, JRS, LBM formal analysis, data analysis, and writing of the manuscript. Conceptualization, methodology, formal analysis, investigation, writing - original draft, supervision in the assembly and conduction of experiments, project administration, tabulation and analysis of data and writing of the manuscript. Jander Rodrigues Souza: Formal analysis, investigation, assembly and conduction of experiments, data analysis, and writing of the manuscript. Luciano Bastos Moreira: Formal analysis, investigation, assembly and conduction of experiments, data analysis and writing of the manuscript. Lucas Lorenzon Resende Lima Investigation, visualization, assistance in the creation and maintenance of insects, the assembly and conduct of experiments, as well as the collection and tabulation of data. Geraldo Andrade Carvalho: Conceptualization, coordinator, methodology, resources, writing - review & editing, project administration, funding acquisition, supervision of activities.

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Correspondence to Geraldo Andrade Carvalho.

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This article does not contain any studies with human participants or animals performed by any of the authors. The authors agree with the publication of the manuscript in this form.

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Silva, T.G., Souza, J.R., Moreira, L.B. et al. Survival, development and reproduction of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) under effects of insecticides used in tomato plants. Ecotoxicology 30, 863–872 (2021). https://doi.org/10.1007/s10646-021-02415-4

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