Electroantennogram responses of Carcelia matsukarehae to the volatiles of Pinus massoniana damaged by Dendrolimus punctatus

Abstract

Carcelia matsukarehae Shima is the important natural enemy of pine caterpillars Dendrolimus punctatus (Walker) in China. The volatiles of pine Pinus massoniana Lamb. after damaged by pine caterpillars were collected and identified in the experiment. Electroantennograms from the female Carcelia matsukarehae Shima were recorded ill response to the volatile compounds. Results showed that all volatile compounds but (+)-longifolene call elicit effective EAG responses to C. matsukarehae. The most effective antennal stimulants to C. matsukarehae was cis-3-Hexen-1-ol and the lowest was (+)-Longifolene during all the stimulus. The averaged EAG responses of the female flies to 4 different chemical classes showed that the green leaf volatiles elicited the largest EAG responses and hydrocarbon monoterpenes, oxygenated monoterpenes and sesquiterpenoids elicited subsequently some EAG responses to female flies.