寄生经历对川硬皮肿腿蜂寄主搜索行为的影响

Influence of parasitical experience on host foraging behavior by Scleroderma sichuanensis

研究寄生经历对川硬皮肿腿蜂SclerodmasichuanensisXiao寄主搜索行为的影响的结果表明,在指形管内,有寄生经历的川硬皮肿腿蜂产卵准备时间比无寄生经历蜂短,寄主搜索控制时间更少,寄主搜索控制成功率更高。1～3次经历蜂随着经历次数的增加,产卵准备时间逐渐缩短。无经历、1次、2次、3次经历蜂的产卵准备期分别为:6.3,5.3,4.9,4.6d。但3次经历后,准备时间的变化即不显著。无经历蜂与1次经历蜂、5次经历蜂的搜索控制寄主时间分别为:820,240,30min,对寄主的搜索控制成功率分别为72.97%,100%,100%。寄生经历蜂接蜂3d时卵子发育速率更快,寄生经历蜂与无寄生经历蜂在替代寄主上的产卵量差异不显著。

The paper investigated the influence of parasitical experience on host foraging behavior by the parasitoid Sclerodrna sichuanensis Xiao （Hymenoptera Bethylidae）. The pre-oviposition period of females exposing to the fictitious hosts Tenebrio molitor L. （Coleoptera：Tenebrionidae） was shorter than that of females exposing to hosts for 1 - 4 times, and the experienced females in the finger tubes could find the hosts faster than the inexperienced females. Experienced females choiced more hosts than the inexperienced females. Among once to thrice experienced females, the pre-oviposition period is shortening as the parasitical experience increasing. The respect pre-oviposition period of inexperienced ,once experienced , twice experienced, thrice experienced females are folloing：6.3, 5.3, 4.9, and 4.6 d. However, there is no marked differences in pre-oviposition period changes. The respect period of host foraging among inexperienced, once experienced, quintic experienced females are： 820, 240, 30 min. corresponding, The percent of successful host foraging is：72.92%, 100% , 100% .The experienced females in the finger tube had more eggs in the ovaries at the 3th day, but there were little difference between the number of eggs laid on the fictitious hosts by the experienced and the inexperienced females.