Fatores naturais afetando a infestação de mosca-branca em mandioca - DOI: 10.4025/actasciagron.v25i2.1780

Germano Leão Demolin Leite; Marcelo Picanço; José Cola Zanuncio; Marcos Rafael Gusmão

doi:10.4025/actasciagron.v25i2.1780

Natural factors affecting the whitefly infestation on cassava

Authors

Germano Leão Demolin Leite UFMG Author
Marcelo Picanço UFV Author
José Cola Zanuncio UFV Author
Marcos Rafael Gusmão UFV Author

DOI:

https://doi.org/10.4025/actasciagron.v25i2.1780

Keywords:

Aleurothrixus aepim, Manihot esculenta, bioecologia, interação inseto/planta, clima

Abstract

The objective of this study was to determine the effects of predators, parasitoids, leaf chemical composition and levels of leaf nitrogen and potassium, total rainfall, mean temperature, sunlight and relative humidity on the attack rate of the whitefly Aleurothrixus aepim (Goeldi) on the cassava plants Manihot esculenta Crantz. It was observed a negative correlation between nymphs of whitefly and mean temperature and nymphs and adults with total rainfall. There were observed relationships between Aelothripidae with eggs, nymphs and adults of whitefly; Encarsia sp., spider Araneidae and Syrphidae with adults of whitefly; and Hyaliodes vitreus with nymphs of whitefly. Ants of the genus Crematogaster were observed associated to nymphs of this whitefly. The peaks 25.503 and 47.763min. (retention time) correlated with whitefly adults. Even though different factors, such as ecological and physiological conditions of plants, besides parasitoids and predators, can affect population fluctuation of the whitefly; the most important one for this insect seems to be the plant phenology (leaf senescense).

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Author Biography

Germano Leão Demolin Leite, UFMG

possui graduação em Engenharia agronomica pela Universidade Federal de Viçosa (1995), mestrado em Entomologia pela Universidade Federal de Viçosa (1997) e doutorado em Entomologia pela Universidade Federal de Viçosa (2000). Atualmente é professor adjunto da Universidade Federal de Minas Gerais. Tem experiência na área de Agronomia, com ênfase em Entomologia Agrícola. Estagiou no Instituto de Ciencia Animal de San Jose de las Lapas, Cuba, durante 30 dias no ano de 2006. Escritor de livros infanto-juvenis no qual aborda temas referentes a conservação da natureza e como produzir alimentos de forma ecológica Currículo Lattes

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Published

2008-04-23

Issue

Vol. 25 No. 2 (2003)

Section

Agronomy

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I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

How to Cite

Leite, G. L. D., Picanço, M., Zanuncio, J. C., & Gusmão, M. R. (2008). Natural factors affecting the whitefly infestation on cassava. Acta Scientiarum. Agronomy, 25(2), 291-297. https://doi.org/10.4025/actasciagron.v25i2.1780