Male adaptive stupidity: male mating pattern in hybridogenetic frogs
Male adaptive stupidity: male mating pattern in hybridogenetic frogs
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雄性适应性愚蠢：杂交青蛙的雄性交配模式
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
H. Kokko
中科院分区：
文献类型：
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作者：
D. Schmeller;H. Kokko
问题：为什么雄蛙会在大的异种雌蛙和小的同种雌蛙的杂交遗传系统中进行异种交配？与体型较大的雌性交配的策略在进化上何时是稳定的？数学方法：建立了一个具有离散个体类别的生殖价值的连续时间模型，以研究两种强选择压力之间的平衡：体型较大的同种雌性是最佳伴侣，但体型较大的雌性也更有可能是异种的。关键假设：雄性可以检测到雌性的大小，但无法区分同种和异种雌性。交配需要花费时间，而且交配季节是有限的。因此，小亲本物种的雄性应该进化到忽略异种雌性。结论：同种内雄虫择偶的直接利益可以抵消体型较大雌虫的选择压力。这种权衡可以在某种程度上平衡，使不分青红皂白的交配适应。
Question: Why do male frogs invest in heterospecific matings in hybridogenetic systems with large heterospecific and small conspecific females? When is a strategy to mate with larger females evolutionarily stable? Mathematical method: A continuous-time model of reproductive values with discrete classes of individuals is developed to investigate the balance between two strong selective pressures: large conspecific females are the best mates, but large females are also more likely to be heterospecific. Key assumption: Males can detect female size, but are unable to distinguish between conspecific and heterospecific females. Matings incur time costs and the mating season is limited. Therefore, males of the small parental species should evolve to ignore heterospecific females. Conclusion: The results indicate that direct benefits of male mate choice within conspecifics can counteract the selective pressure to avoid large females as mates. This trade-off can balance out in a way that makes indiscriminate mating adaptive.