薜荔延腹榕小蜂的产卵行为

Oviposition Behaviour of Philotrypesis sp.

薜荔延腹榕小蜂是寄生于薜荔榕果内的非传粉小蜂,利用数码照相机记录了薜荔延腹榕小蜂产卵全过程,详细描述了其产卵行为.薜荔延腹榕小蜂产卵过程可分为搜索产卵位点、产卵针刺入榕果及产卵与收回产卵针三个阶段.薜荔延腹榕小蜂的产卵针远长于榕果果壁(花序托)厚度,产卵针沿榕果直径方向插入果托,但在果壁层的行进路线并不一定是笔直的.产卵针在榕果果腔内可横向行进.小蜂各足的发达程度与其在产卵过程中所起的作用相关,小蜂虫体各部位必须协调一致,配合有序才能完成产卵行为.薜荔延腹榕小蜂的复寄生繁殖特性,以及薜荔果托的特殊结构,可能是造成薜荔延腹榕小蜂产卵效率低下的主要原因.

The non-pollinating wasp of Philotrypesis sp. is parasitic in Ficus pumila. The oviposition process of Philotrypesis sp. was recorded with a digital camera in the experiment, which can be divided into three periods, searching oviposition site, the oviposition stylet penetrating into the syconinum to oviposit and pulling out the oviposition stylet. The oviposition stylets were longer than the syconial thickness, and penetrate into the syconial wall along syconial diameter as the shortest way, whereas the paths in syconial wall were not always straight. The oviposition stylet could move transversely in syconial cavity. The legs robustness of Philotrypesis sp. associated with the play in the spawning process. Only if each part of wasp coordinates and orders, can the oviposition behav- ior be accomplished. The parasitic productive characteristics of Philotrypesis sp. and the special structure of syeonial wall of F. pumila may be the main reason for oviposition inefficient.