Performance of nymphs and adults of Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) on soybean pods at different developmental stages

Abstract

A study was conducted in the laboratory to test the suitability of soybean [Glycine max (L.) Merrill] pods at different phenological stages of development (R3-R8) on the performance of nymphs and adults of the small green stink bug Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae). Nymphs and adults showed better performance when fed on soybean pods during the pod-filling stage (R5-R6), compared to those fed on soybean pods at the remaining stages of development. When fed on soybean pods without seeds (R3-R4) no nymphs survived and no adults reproduced.Estudos foram conduzidos em laboratório para testar a adequabilidade de vagens de soja [Glycine max (L.) Merrill] em diferentes fases fenológicas (R3-R8) na performance de ninfas e adultos do percevejo verde pequeno Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae). Tanto ninfas como adultos mostraram uma melhor performance quando se alimentaram das vagens de soja na fase de enchimento de grãos (R5-R6), comparado com aqueles que se alimentaram de vagens de soja nas demais fases de desenvolvimento. Em vagens sem grãos (R3-R4) nenhuma ninfa sobreviveu e não houve reprodução.

Keywords

• Heteroptera
• Pentatomidae
• stink bug
• Glycine max
• soybean pod phenology
• biology