When Synchrony Makes the Best of Both Worlds Even Better: How Well Do We Really Understand Facultative Sex?
When Synchrony Makes the Best of Both Worlds Even Better: How Well Do We Really Understand Facultative Sex?
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DOI：
10.1086/706812
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发表时间：
2020-02-01
影响因子：
2.9
通讯作者：
Kokko, Hanna
中科院分区：
文献类型：
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作者：
Kokko, Hanna
生物多样性有很多潜在的研究课题。对模型系统的研究有其优势，但依赖于少数几个众所周知的案例可能会对什么样的生物现象是正常的产生错误的印象。在这里，我关注的是兼性行为，这通常被誉为提供了两个世界最好的，因为罕见的性行为提供了几乎与强制性性行为相同的好处，并且避免了支付大部分人口成本。我们对这种有性生殖方式何时以及为何会流行有多了解？我展示了理论文献中的几个空白，并通过对比异步与同步性，强调需要将性理论与赌注对冲的理论基础联系起来，一方面，另一方面，要考虑交配限制。条件依赖的性别和性别之间的联系与传播或休眠出现研究不足。虽然简化是合理的，因为一个简单的假设结构增强了分析的易处理性，但仍有许多工作要做，以将真实的性的关键特征纳入主要的理论建设。
Biological diversity abounds in potential study topics. Studies of model systems have their advantages, but reliance on a few well-understood cases may create false impressions of what biological phenomena are the norm. Here I focus on facultative sex, which is often hailed as offering the best of both worlds, in that rare sex offers benefits almost equal to obligate sex and avoids paying most of the demographic costs. How well do we understand when and why this form of sexual reproduction is expected to prevail? I show several gaps in the theoretical literature and, by contrasting asynchronous with synchronous sex, highlight the need to link sex theories to the theoretical underpinnings of bet hedging, on the one hand, and to mate limitation considerations, on the other. Condition-dependent sex and links between sex with dispersal or dormancy appear understudied. While simplifications are justifiable as a simple assumption structure enhances analytical tractability, much remains to be done to incorporate key features of real sex to the main theoretical edifice.