Data/hora: 02/06/2024 01:31:21

Provedor de dados: | 92
País: | Brazil
Título: | Effect of gossypol on survival and reproduction of the zoophytophagous stinkbug Podisus nigrispinus (Dallas)
Autores: | Evangelista Junior,Walter S.; Santos,Roberta L.; Torres,Jorge B.; Zanuncio,José C.
Data: | 2011-06-01
Ano: | 2011
Palavras-chave: | Asopinae; Host plant resistance; Omnivory; Zoophytophagy.
Resumo: | Effect of gossypol on survival and reproduction of the zoophytophagous stinkbug Podisus nigrispinus (Dallas). Gossypol is a sesquiterpene aldehyde found in cotton plants conferring resistance against herbivory. Although the effect of this sesquiterpenoid on insect pests of cotton is known, the interaction of this compound with zoophytophagous predators such as Podisus nigrispinus (Dallas) (Hemiptera, Pentatomidae) has not been studied so far. Thus, the objective of this study was to evaluate the effect of the purified gossypol on nymphs and adults of P. nigrispinus. Nymphs and adults of this predator were fed on Tenebrio molitor pupae and supplemented with solutions of gossypol at concentrations of 0.00, 0.05, 0.10, and 0.20% (w/v) during the nymphal and adult stages or, only during the adult stage of P. nigrispinus. The nymphal stage of the predator was, on average, two days longer when suplemmented with gossypol. Emerged adults had lower fecundity and egg hatching, especially at the highest gossypol concentration (0.20%) ingested during the nymphal and adult stages. However, this predator was not affected when it ingested the compound only during the adult stage. P. nigrispinus can have delayed nymphal development and lower reproductive performance when ingesting the gossypol during the nymphal and adult stages, but only at higher concentrations of gossypol than that produced by cotton plants.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000200018
Editor: | Sociedade Brasileira De Entomologia
Relação: | 10.1590/S0085-56262011005000003
Formato: | text/html
Fonte: | Revista Brasileira de Entomologia  v.55 n.2 2011
Fonte: | info:eu-repo/semantics/openAccess