Parentage and sex allocation in the facultatively polygynous ant Myrmica tahoensis
Parentage and sex allocation in the facultatively polygynous ant Myrmica tahoensis
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DOI：
10.1007/s002650050512
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发表时间：
1998-11-01
影响因子：
2.3
通讯作者：
Evans, JD
中科院分区：
文献类型：
--
作者：
Evans, JD
大多数社会群体都有可能在群体成员之间发生生殖冲突。在昆虫社会中，繁殖可以在多个可育个体之间进行，导致这些个体之间对有性后代的父母关系的潜在冲突。一夫多妻制蚁Myrmica tahoensis的殖民地包含从一个到几个交配的女王。在这个物种中，雌性几乎完全由一个女王产生。男性性欲者的出身则更为复杂。根据基于工蚁性别分配偏好的预测，雄性工蚁群体的遗传相关性往往较低（即，高皇后数）。相应地，雄性通常是从巢中的两个或更多个蚁后的蛋中培育出来的。此外，超过一半的雄性似乎是有生育能力的工蚁的后代，而不是蚁后的后代。总的投资比率比遗传相关性预测的更偏向男性，这表明与女性性行为的生产相关的隐藏成本。这些成本很可能包括当地资源的竞争，女性之间，最显着的是，当这些人通过他们的母亲巢。
Most social groups have the potential for reproductive conflict among group members. Within insect societies, reproduction can be divided among multiple fertile individuals, leading to potential conflicts between these individuals over the parentage of sexual offspring. Colonies of the facultatively polygynous ant Myrmica tahoensis contain from one to several mated queens. In this species, female sexuals were produced almost exclusively by one queen. The parentage of male sexuals was more complex. In accordance with predictions based on worker sex-allocation preferences, male-producing colonies tended to have low levels of genetic relatedness (i.e., high queen numbers). Correspondingly, males were often reared from the eggs of two or more queens in the nest. Further, over half of the males produced appeared to be the progeny of fertile workers, not of queens. Overall investment ratios were substantially more male biased than those predicted by genetic relatedness, suggesting hidden costs associated with the production of female sexuals. These costs are likely to include local-resource competition among females, most notably when these individuals are adopted by their maternal nest.