OPTIMALITY, PLASTICITY AND SELECTIVE REGIME IN FIG WASP SEX-RATIOS
OPTIMALITY, PLASTICITY AND SELECTIVE REGIME IN FIG WASP SEX-RATIOS
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DOI：
10.1038/329627a0
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发表时间：
1987-10-15
期刊：
影响因子：
64.8
通讯作者：
HERRE, EA
中科院分区：
文献类型：
--
作者：
HERRE, EA
在13种榕粉传粉小蜂中，由1个或2个母蜂组成的巢的性比与当地配偶竞争理论所预测的最佳性比有定性的一致性。与这些预测的偏差不是随机的：对于给定数量的foundresses，在自然遇到最频繁的foundresses的黄蜂物种中，偏差最小。此外，有一个和两个foundresses的育雏之间的性别比例的差异是最大的那些物种的黄蜂，这两种类型的育雏通常发生。这些结果表明的重要性，在塑造性别比例调整的演变的选择制度，并建议适应性行为可塑性更发达的物种受到更多的变量选择制度。
In thirteen species of fig-pollinating wasps the sex ratios of broods with one or two foundress mothers show qualitative agreement with the optimal sex ratios predicted by local mate competition theory. The deviations from these predictions are not random: for a given number of foundresses, the deviations are least in the wasp species that naturally encounter that number of foundresses most frequently. Furthermore, the difference in sex ratio between broods with one and broods with two foundresses is greatest in those species of wasp in which broods of both type commonly occur. These results show the importance of the selective regime in shaping the evolution of sex-ratio adjustment, and suggest that adaptive behavioural plasticity is more developed in species subject to more variable selective regimes.