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Spatiotemporal Dynamics and Natural Mortality Factors of Myzus persicae (Sulzer) (Hemiptera: Aphididae) in Bell Pepper Crops

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Abstract

Pest populations are mostly regulated by climate, intra- and interspecific competition, natural enemies, and host plant quality. Myzus persicae (Sulzer) (Hemiptera: Aphididae) is a widely adapted aphid in the agroecosystems and is one of the main bell pepper pests. In the present study, we determined the spatial and temporal dynamics and the regulatory factors of M. persicae populations in bell pepper crops. The number of aphids and their natural enemies were evaluated during 2 years in four commercial bell pepper fields. Myzus persicae density data were related to temperature, rainfall, and natural enemies by multiple regression analysis and were then submitted to geostatistical analysis. The density of M. persicae was higher during the plant’s reproductive growth stage. Rainfall, Chrysoperla spp., and Toxomerus spp. regulate M. persicae populations. Initial infestations of this pest occur along the edges of the fields and subsequently spread towards the center. This information is useful for integrated management programs aimed at anticipating periods of higher abundance of M. persicae and identifying arthropods to be prioritized in biological control.

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Acknowledgments

We would like to thank Mr. Phillip Villani (University of Melbourne, Australia) for revising the English writing, and professor Laércio Zambolim (Universidade Federal de Viçosa) for identifying the entomopathogen species.

Funding

We are grateful for the financial support provided by the National Council of Scientific and Technological Development (CNPq), the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001, and the Minas Gerais State Foundation for Research Aid (FAPEMIG).

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Contributions

JRSS, VCRA, RSR, TAA, and MCP contributed to the study conception and design. Material preparation, data collection, and analysis were performed by JRSS, JSP, VCRA, TAA, and RSR. The first draft of the manuscript was written by JRSS and corrected by JCZ. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to J R S Soares.

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The authors declare that they have no conflict of interest.

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Edited by Jorge B Torres – UFRPE

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Soares, J.R.S., da Silva Paes, J., de Araújo, V.C.R. et al. Spatiotemporal Dynamics and Natural Mortality Factors of Myzus persicae (Sulzer) (Hemiptera: Aphididae) in Bell Pepper Crops. Neotrop Entomol 49, 445–455 (2020). https://doi.org/10.1007/s13744-020-00761-2

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  • DOI: https://doi.org/10.1007/s13744-020-00761-2

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