The factors that interfere with the chemosterilization of R. prolixus, when metepa is applied topically, are analysed. It is suggested that similar studies, based on individual fertility of insects, be periodically made to detect the appearance of resistance in triatominae populations. Data with indicates that metepa has no effect on T. cruzi when R. prolixus were infected with the parasite after chemosterilization, are presented.
Rhodnius prolixus; Chemosterilization; Metepa; Trypanossoma cruzi
