Reproductive characteristics of the predator Podisus nigrispinus fed with an insect resistant soybean variety

Pesquisa Agropecuária Brasileira

Fausto Da Costa Matos Neto²  José Cola Zanuncio¹  Marcelo Coutinho Picanço¹  Ivan Cruz¹ 

[1] ,Universidade Federal de Viçosa Dep. de Fitotecnia Viçosa MG ,Brazil

关键词: Anticarsia gemmatalis;    insects;    reproduction;    biological control;    pest control;    Anticarsia gemmatalis;    insetos;    reprodução;    controle biológico;    controle de pragas;   

DOI  :  10.1590/S0100-204X2002000700004

来源: SciELO

【 摘 要 】

The objective of this research was to evaluate the effect of the insect resistant soybean genotype IAC 17 on reproductive characteristics of Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) females compared to the soybean insect susceptible genotype UFV 16. Treatments were: T1) females of P. nigrispinus fed on plants of the UFV 16 and Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) caterpillars reared on leaves of this variety; T2) females of P. nigrispinus fed on plants of the IAC 17 and A. gemmatalis caterpillars reared on leaves of this variety. Longevity of females, pre-oviposition, oviposition and pos-oviposition periods, number of eggs and egg masses/female, egg weight, interval between egg mass laying, number of eggs/egg mass, percentage of nymphs, number of nymphs/female and total number of prey killed/female of P. nigrispinus were evaluated. Most of the characteristics evaluated showed similar results between treatments, but the oviposition period was longer for females reared on the resistant genotype than on the susceptible one and the percentage of total females that laid eggs was lower on the IAC 17. Also, the resistant genotype caused higher mortality of P. nigrispinus females at the beginning of its adult stage and egg production by females of this predator was better spread along its adult stage with this resistant genotype. On the other hand, results suggest no effect of the resistant genotype on the offspring of this predator.

【 授权许可】

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