高榕果内产卵的两种小蜂对合成信息素的行为反应

In this study, we applied a Y-tube (binary choice) olfactometer to test the responses of E. altissima and Eupristina sp. to fig volatiles of different developmental phase of Ficus altissima and infochemical mixture. Results showed that: E. altissima and Eupristina sp. also showed similary responses to infochemicals linalool, benzyl ethylene The interation of benzyl ethylene and farnesol significantly affected the choice behavior of both the two wasp species. Both wasp species repelled mix infochemicals of group A1B2C2 (0.5% Linalool + 1% Benzyl ethylene + 1% Farnesol) significantly and significantly attracted by mix infochmicals of group A2B1C1 (1% Linalool + 0.5% Benzyl ethylene + 0.5% Farnesol ), A2B1C2(1% Linalool + 0.5% Benzyl ethylene + 1% Farnesol ), A2B2C1 (1% Linalool + 1% Benzyl ethylene + 0.5% Farnesol ), while two wasp species showed difference responses to mix infochemical of group A1B1C1(0.5% Linalool + 0.5% Benzyl ethylene + 0.5% Farnesol ). Above all, the two different wasp species can discriminate different volatile signals, and E. altissima was more favor to the fig volatiles of their host than Eupristina sp., therefore, E. altissima was able to locate their host more accurately than Eupristina sp. The different responses of E. altissima and Eupristina sp. to the fig volatiles and infochemicals may related to the different structure of their antenna. Our result will provide a scientific basis to the studies of chemical signaling mechanism of fig-wasp mutualism.