Perception of male-male competition influences Drosophila copulation behaviour even in species where females rarely remate
Perception of male-male competition influences Drosophila copulation behaviour even in species where females rarely remate
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DOI：
10.1098/rsbl.2011.0544
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发表时间：
2012-02-23
期刊：
影响因子：
3.3
通讯作者：
Hurst, Gregory D. D.
中科院分区：
文献类型：
--
作者：
Lize, Anne;Doff, Rowan J.;Hurst, Gregory D. D.
已知许多分类群中的雄性表现出行为可塑性，以应对感知到的精子竞争强度，这反映在黑腹果蝇（Drosophila melanogaster）中，即在先前暴露于竞争对手后，交配时间延长。我们测试了这样一种预测，即在精子竞争很少或没有竞争的果蝇物种中，雄性不会根据竞争对手的存在来调整交配努力。与预期相反，雄性在交配时间上的可塑性在亚种果蝇和棘翅果蝇中都被发现，这些物种中雌性很少交配。这些结果与这些物种可塑性的适应基础有关。
Males in many taxa are known to exhibit behavioural plasticity in response to the perceived intensity of sperm competition, reflected in Drosophila melanogaster by increased copulation duration following prior exposure to a rival. We tested the prediction that males do not adjust their copulation effort in response to the presence of a competitor in Drosophila species where there is little or no sperm competition. Contrary to expectations, male plasticity in copulation duration was found in both Drosophila subobscura and Drosophila acanthoptera, species in which females rarely remate. These results are discussed in relation to the adaptive basis of plasticity in these species.