Seminal Fluid Mediates Ejaculate Competition in Social Insects
Seminal Fluid Mediates Ejaculate Competition in Social Insects
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DOI：
10.1126/science.1184709
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发表时间：
2010-03-19
期刊：
影响因子：
56.9
通讯作者：
Boomsma, Jacobus J.
中科院分区：
文献类型：
--
作者：
den Boer, Susanne P. A.;Baer, Boris;Boomsma, Jacobus J.
蚂蚁和蜜蜂的蚁后通常在一天的性活动中获得一生的精子供应，而在蚁后从多个雄性处获得精子的谱系中，预计会发生精子竞争。我们比较了蚂蚁和蜜蜂的单配（单雄）和多配（一妻多夫）姐妹群体，结果表明，一妻多夫物种的精液对雄性自身精子的存活比对其他雄性精子的存活具有更积极的影响。在单性物种中没有观察到这种差异，这表明竞争性精子的失能可能在蜜蜂和蚂蚁中独立进化而来。在阿塔切叶蚁中，其他雄性精液的负面影响被蚁后精子储存器官的分泌物所抵消，这表明蚁后可能在精子储存后控制射精竞争。
Queens of ants and bees normally obtain a lifetime supply of sperm on a single day of sexual activity, and sperm competition is expected to occur in lineages where queens receive sperm from multiple males. We compared singly mated (monandrous) and multiply mated (polyandrous) sister groups of ants and bees and show that seminal fluid of polyandrous species has a more positive effect on the survival of a male's own sperm than on other males' sperm. This difference was not observed in the monandrous species, suggesting that incapacitation of competing sperm may have independently evolved in both bees and ants. In Atta leafcutter ants, the negative effect of the seminal fluid of other males was negated by secretion from the queen sperm-storage organ, suggesting that queens may control ejaculate competition after sperm storage.