Optimizing mating encounters by sexually dimorphic movements
Optimizing mating encounters by sexually dimorphic movements
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DOI：
10.1098/rsif.2017.0086
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发表时间：
2017-05-01
影响因子：
3.9
通讯作者：
Dobata, Shigeto
中科院分区：
文献类型：
--
作者：
Mizumoto, Nobuaki;Abe, Masato S.;Dobata, Shigeto
所有有性生殖的生物都经历了一个交配过程，本质上包括两个不同性别的个体相遇。在寻找配偶的过程中，两性应该相互优化他们的相遇，因此提出了他们如何实现这一目标的问题。在这里，我们表明，在有限的寿命下，具有两性二态运动模式的种群获得了最高的个体交配成功率。大量的模拟发现和分析近似证实了运动模式中的两性二态性（即它们运动的扩散程度）优于两性单态性的条件的存在。寿命有限的相互搜寻者需要平衡寻找配偶的速度和准确性，而二态运动可以解决这种权衡。我们进一步证明了两性二态性可以从最初的两性单态群体进化而来。我们的结果强调了在随机搜索问题中考虑相互优化的重要性。
All organisms with sexual reproduction undergo a process of mating, which essentially involves the encounter of two individuals belonging to different sexes. During mate search, both sexes should mutually optimize their encounters, thus raising a question of how they achieve this. Here, we show that a population with sexually dimorphic movement patterns achieves the highest individual mating success under a limited lifespan. Extensive simulations found and analytical approximations corroborated the existence of conditions under which sexual dimorphism in the movement patterns (i.e. how diffusively they move) is advantageous over sexual monomorphism. Mutual searchers with limited lifespans need to balance the speed and accuracy of finding their mates, and dimorphic movements can solve this trade-off. We further demonstrate that the sexual dimorphism can evolve from an initial sexually monomorphic population. Our results emphasize the importance of considering mutual optimization in problems of random search.