| Autor: |
Soares, J R S, da Silva Paes, J, de Araújo, V C R, de Araújo, T A, Ramos, R S, Picanço, M C, Zanuncio, J C |
| Zdroj: |
Neotropical Entomology; 20240101, Issue: Preprints p1-11, 11p |
| Abstrakt: |
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. persicaepopulations in bell pepper crops. The number of aphids and their natural enemies were evaluated during 2 years in four commercial bell pepper fields. Myzus persicaedensity data were related to temperature, rainfall, and natural enemies by multiple regression analysis and were then submitted to geostatistical analysis. The density of M. persicaewas higher during the plant’s reproductive growth stage. Rainfall, Chrysoperlaspp., and Toxomerusspp. regulate M. persicaepopulations. 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. persicaeand identifying arthropods to be prioritized in biological control. |
| Databáze: |
Supplemental Index |
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