Males and females contribute differently to the evolution of habitat segregation driven by hybridization
Males and females contribute differently to the evolution of habitat segregation driven by hybridization
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雄性和雌性对杂交驱动的栖息地隔离进化的贡献不同
DOI：
10.1111/jeb.14156
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发表时间：
2023
影响因子：
2.1
通讯作者：
R.
中科院分区：
文献类型：
--
作者：
Kyogoku;D.;and Yamaguchi;R.
昂贵的异种交配相互作用，如杂交，选择合子前生殖隔离。对不适应杂交产生的选择作出反应的潜在性状之一是生境偏好，生境偏好的分化导致种间生境分离。到目前为止，理论研究认为栖息地偏好是一种两性共有的特征。然而，雄性和雌性的栖息地偏好会经历不同的选择压力。本文通过分析和模拟相结合的方法，从理论上考察了性别特异性栖息地偏好的演变。栖息地分离可能会产生人口统计学上的后果，潜在地产生生态进化动力学。因此，我们在模拟模型中明确地考虑了人口统计学。我们还改变了物种歧视的程度，以研究配偶选择如何影响栖息地偏好的进化。结果表明，两性都可以通过定居在有大量同种配偶居住的栖息地来降低杂交风险。然而，当雌性可以区分物种时，过量的同种雄性聚集加剧了雄性对交配机会的竞争，对同种聚集构成了障碍。与此同时，同一种群的雌性聚集通过提供交配机会来吸引同一种群的雄性。因此，在有效的物种歧视下，雌性在启动生境利用分化方面起主导作用。模拟的典型结果要么是与已建立的栖息地分离共存，要么是其中一个物种灭绝。当物种在二次接触时对栖息地的偏好有一定程度的差异时，前者的结果尤其可能。我们的研究结果揭示了雄性和雌性栖息地偏好的选择压力，加深了我们对杂交导致的栖息地分离的进化过程的理解。摘要：栖息地分离可以在不适应杂交（即强化）的响应中进化。我们的模型表明，如果存在一定程度的（预先存在的，非进化的）物种识别，雄性和雌性的栖息地偏好选择不同。当雄性和雌性的栖息地偏好具有不同的遗传基础时，这些特征表现出有趣的共同进化。图表（上）总结了性别特异性的选择压力，热图（下）显示了先前存在的、性别限制的部分栖息地隔离（PHS）如何影响与已建立的栖息地隔离的最终共存。
Costly heterospecific mating interactions, such as hybridization, select for prezygotic reproductive isolation. One of the potential traits responding to the selection arising from maladaptive hybridization is habitat preference, whose divergence results in interspecific habitat segregation. Theoretical studies have so far assumed that habitat preference is a sexually shared trait. However, male and female habitat preferences can experience different selection pressures. Here, by combining analytical and simulation approaches, we theoretically examine the evolution of sex‐specific habitat preferences. Habitat segregation can have demographic consequences, potentially generating eco‐evolutionary dynamics. We thus explicitly consider demography in the simulation model. We also vary the degrees of species discrimination to examine how mate choice influences the evolution of habitat preferences. Results show that both sexes can reduce hybridisation risk by settling in the habitats where abundant conspecific mates reside. However, when females can discriminate species, excess conspecific male aggregation intensifies male–male competition for mating opportunities, posing an obstacle to conspecific aggregation. Meanwhile, conspecific female aggregation attracts conspecific males, by offering the mating opportunity. Therefore, under effective species discrimination, females play a leading role in initiating habitat use divergence. Simulations typically result in either the coexistence with established habitat segregation or the extinction of one of the species. The former result is especially likely when the species differ to some extent in habitat preferences upon secondary contact. Our results disentangle the selection pressures acting on male and female habitat preferences, deepening our understanding of the evolutionary process of habitat segregation due to hybridization.AbstractHabitat segregation can evolve in response to maladaptive hybridization (i.e., reinforcement). Our model shows that, if there is some extent of (pre‐existing, non‐evolving) species recognition, male and female habitat preferences are selected differently. When male and female habitat preferences have different genetic bases, these traits show interesting coevolution. The diagrams (top) summarise sex‐specific selection pressures, and the heatmaps (bottom) show how pre‐existing, sex‐limited partial habitat segregation (PHS) influence the eventual coexistence with established habitat segregation.
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影响因子：
2.1
作者：
D. Kyogoku;D. Wheatcroft
通讯作者：
D. Kyogoku;D. Wheatcroft
影响因子：
1.9
作者：
P. Nosil;Roman Yukilevich
通讯作者：
Roman Yukilevich
女性的选择
影响因子：
64.8
作者：
U. Savalli
通讯作者：
U. Savalli
性选择适应的替代方案：栖息地选择。
影响因子：
16.8
作者：
Cody K. Porter;C. Akcali
通讯作者：
C. Akcali
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
D. Shuker;E. Burdfield
通讯作者：
E. Burdfield