Social structure and split sex ratios in the ant Pheidole pallidula
Social structure and split sex ratios in the ant Pheidole pallidula
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蚂蚁 Pheidole pallidula 的社会结构和性别比例
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
L. Passera
中科院分区：
文献类型：
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作者：
S. Aron;E. Campan;J. Boomsma;L. Passera
本文研究了灰蚁的社会结构和生殖分配。同工酶分析表明：(1)蜂王是单交的，(2)一夫一妻制（单蜂后）和一夫多妻制（多蜂后）的蜂群同时出现在同一个种群中，(3)一夫多妻制的蜂群可能有任何与全姐妹蜂王无关的东西。该物种的性别比例被证明是极端分裂的，我们已经测试了这种群体水平的性别比例特殊化可以用(1)资源水平假说（RLH）和(2)亲缘不对称假说（RAH）来解释的程度。我们的数据显示，对雌性的比例投资与总性生产力呈正相关，这支持了RLH。与预期相反，配偶间的亲缘关系与雌性生殖的相对投资呈负相关。然而，没有证据表明亲缘不对称会随之减少；我们数据中的几个趋势表明……
We have investigated the social structure and reproductive allocation of the ant Pheidole pallidula. Allozyme analyses indicate that (1) queens are singlymated, (2) both monogynous (single-queen) and polygynous (multiple-queen) colonies co-occur in the same population and (3) polygynous colonies may have anything from unrelated to full-sister queens. Sex ratios in this species were shown to be extremely split and we have tested the extent to which this colonylevel sex ratio specialisation could be explained by (1) the resource level hypothesis (RLH) and (2) the relatedness asymmetry hypothesis (RAH). Our data show that the proportional investment in females was positively associated with total sexual productivity, which supports the RLH. In contrast to the expectation, relatedness among nestmate females was negatively correlated with relative investment in female reproductives. However, no evidence was obtained for a concomitant decrease in relatedness asymmetry; several trends in our data suggest that re...