Behavioral and Electrophysiological Responses of the Banana Pseudostem Weevil Odoiporous longicollis Olivier to Host Plant Volatiles

摘要

Electroantennography (EAG) and behavioral bioassays were conducted to determine the effective host-plant volatile(s) for the attraction of Odoiporus longicollis adults. Volatiles from healthy and mechanically damaged pseudostem extract elicited significantly higher antennal response in male (1.187±0.102mV) and female weevils (0.942±0.116mV), respectively. The Y tube olfactometer study revealed that significantly more males were attracted towards the healthy (66.67%) and mechanically damaged pseudostem extract (61.90%), while females showed more attraction towards BSW damaged (57.14%)) and decaying pseudostem extract (57.14%) in addition to healthy plant volatile (52.38%). Hence, these plant volatiles may be used as attractants for the management of the pest.