Increased opportunity for sexual conflict promotes harmful males with elevated courtship frequencies
Increased opportunity for sexual conflict promotes harmful males with elevated courtship frequencies
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DOI：
10.1111/j.1420-9101.2009.01907.x
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发表时间：
2010-02-01
影响因子：
2.1
通讯作者：
Snook, R. R.
中科院分区：
文献类型：
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作者：
Crudgington, H. S.;Fellows, S.;Snook, R. R.
交配系统对两性之间发生冲突的可能性有着深远的影响。滥交被预测会产生性冲突，从而推动伤害女性的男性特征的进化，而一夫一妻制则被预测会促进生殖合作，从而使这些特征变得多余。我们测试这些预测实验进化果蝇pseudobscura不同的交配系统。雌性动物的存活率不受其伴侣的交配系统治疗的影响。然而，女性不断与男性居住的女性滥交的机会升高下发展产生的总后代较少，但在他们的生活早期，比女性居住的男性专性一夫一妻制下发展的后代数量相对较多。我们还发现，滥交的男性比一夫一妻制的男性更频繁地追求女性。在男性求爱频率和后代生产模式之间的治疗的变化加强了交配系统的性冲突的变化，在前和后交配的相互作用的至关重要性。
Mating systems have a profound influence on the probability of conflict occurring between the sexes. Promiscuity is predicted to generate sexual conflict, thereby driving the evolution of male traits that harm females, whereas monogamy is expected to foster reproductive cooperation, thus rendering such traits redundant. We tested these predictions using experimentally evolved Drosophila pseudoobscura subject to different mating systems. Female survival was not influenced by the mating system treatment of her partner. However, females continuously housed with males evolving under elevated opportunities for female promiscuity produced fewer total progeny, but a relatively greater number of progeny early in their lives, than females housed with males evolving under obligate monogamy. We also found that promiscuous males courted females more frequently than monogamous males. Variation in male courtship frequency and progeny production patterns among treatments reinforces the critical importance of mating system variation for sexual conflict, during both pre- and post-copulatory interactions.