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中文摘要：
于2007年4月—2007年7月在中国科学院西双版纳热带植物园,通过干预控制榕小蜂产卵的方法研究了聚果榕的传粉榕小蜂Ceratosolen fusciceps和非传粉小蜂Platyneura mayri及垂叶榕的非传粉小蜂Acophila sp.1和Wakerella benjamini等的产卵顺序。对传粉榕小蜂,在完成放蜂后不同间隔时间向榕果内注入乙醚杀死小蜂;对非传粉榕小蜂,在放蜂后不同间隔时间将其从纱网袋内全部放出,从而控制了各种榕小蜂的产卵时间。到榕果成熟后,收集了榕果内的小蜂,并分析比较各种榕小蜂在不同产卵时间下的子代性比。结果表明：Ceratosolen fusciceps、P.mayri和Acophila sp.1在产卵的最初时间内倾向于产下更多的雄性后代,而随后的时间内则产下更多的雌性伴随少量的雄性后代,这样的产卵顺序导致子代性比随着母代产卵时间的延长而下降,榕小蜂后代雌性比例显著高于雄性。同时,子代榕小蜂数量随母代产卵时间的延长而增加,这在一定程度上解释了单头繁殖雌蜂的子代性比随子代数量的增加而减少的现象。而Wakerella benjamini在产卵顺序上是随机的,在其开始产卵后的不同时间段内子代性比都接近于50％。这一结果表明榕小蜂的产卵顺序与母代产卵时间的长短对子代性比有极为重要的影响。
英文摘要：
In this study, we experimentally examined the ovipositing sequence of the pollinator Ceratosolenfuscicep, non-pollinating wasp Platyneura mayri of Ficus racemosa and non-pollinating wasp Acophila sp.1 and Wakerella benjamini of Ficus benjamina in Xishuangbanna from Apr. 2006 to Jun. 2007. For the pollinating fig wasps, we injected ether into the receptive fruits with different time intervals after introducing the fig wasps, killing the fig wasps; for the non-pollinating fig wasps, we manually controlled ovipositing time length through organdy bags. After the treated fruits developed to be mature stage, we collected the adult wasps, and then analyzed and compared the offspring sex ratio under different ovipositing time length. The data showed that fig wasp C. fuscicep, P. mayri and Acophila sp. 1 firstly oviposit their male offspring. The male offspring was much higher than female, if the mother wasps only oviposited one hour, whist the female offspring will be increased with the increase of oviposting time of mother wasps and the female offspring will be much higher than male offspring when the mother wasps could sufficiently oviposit their offspring in these three fig wasps. These results partly explain that the female offspring sex ratio decrease with increase of number of foundresses. However, the ovipositing sequence of Wakerella benjamini randomly oviposit their eggs and the sex ratio is about 1：1. Our results here imply that the ovipositing sequence and ovipositing time length of mother wasps might be of the most important factors determining the offspring sex ratio of fig wasps.
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