Portal de Periódicos da CAPES

Adaptação da lagarta de soja Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) ao inibidor de protease benzamidina

2009; UNIVERSIDADE FEDERAL DE VIÇOSA; Volume: 56; Issue: 6 Linguagem: Inglês

2177-3491

Anderson Martins Pilon, Maria Goreti Almeida Oliveira, Franciny Martins Pilon, R. N. C. Guedes, Joel Antônio de Oliveira, Anderson Fazollo,

Insect Pest Control Strategies

The serine protease inhibitor benzamidine inhibits hydrolyses of trypsin-like digestive proteases in the midgut of velvetbean caterpillar, Anticarsia gemmatalis. In this study, newly-emerged A. gemmatalis caterpillars were fed on artificial diet containing increasing concentrations of benzamidine (0, 0.25, 0.50 e 0.75% w/w). This inhibitor caused negative effects in the insect development, by increasing the larval cycle and higher mortality. Nonetheless even at the highest benzamidine concentration, the insect mortality was low, suggesting that the insect is able to adapt to this inhibitor. Such adaptation may take place by increasing the amount of protease produced for digestion or changing the prevailing type of protease.