论文部分内容阅读
Electroantennograms(EAGs)responses were recorded from males and females of Iragoides fasciata Moore in response to a wide range of plant volatile compounds belonging to several chemical classes．The responses to 27 compounds were evaluated，which showed signi?cant differences in EAGs between chemicals as well as between sexes．The fatty acid derivatives comprising essentially green leaf volatile components elicited signi?cantly greater responses in males．In general，the antennae of males were more sensitive and responsed stronger to most of the compounds．EAG responses to sesquiterpenes were lower in both males and females． Dose—dependent response studies indicate differences in response between the sexes and concentrations，suggesting the existence of sexual dimorphism．Compounds belonging to the fatty acid derivatives class appear to be important clues in host plant selection by this oligophagous species．