Receptor neurones in three heliothine moths responding to floral and inducible plant volatiles

摘要: Some plant volatiles are produced in response to herbivory of several insect species, including heliothine larvae. In the present study female moths, four co-located receptor neurone types were identified, which three responded strongest inducible compounds E-β-ocimene, E,E-α-farnesene and E,E-TMTT, respectively. The fourth type geraniol, is a common floral volatile. narrow tuning each was demonstrated by responses few structurally-related monoterpenes, sesquiterpenes, homo-terpenes monoterpene alcohols, respectively, out hundreds constituents tested. showed same relation spike amplitudes ranking effective species; polyphagous Heliothis virescens Helicoverpa armigera oligophagous assulta. results indicate presence functionally similar odour-receptor neurones related suggest conservation or reappearance olfactory receptors independent evolution polyphagy oligophagy.