Reproductive Character Displacement in Genital Morphology in <i>Ohomopterus</i> Ground Beetles
Reproductive Character Displacement in Genital Morphology in <i>Ohomopterus</i> Ground Beetles
复制标题
<i>Ohomopterus</i> 地面甲虫生殖器形态的生殖特征位移
DOI：
10.1086/717864
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Takami Yasuoki
中科院分区：
文献类型：
--
作者：
Nishimura Taira;Nagata Nobuaki;Terada Karen;Xia Tian;Kubota Kohei;Sota Teiji;Takami Yasuoki
生殖器形态显示出物种间的快速多样性，而生殖器形态上特定物种的差异可能导致生殖隔离并促进物种形成。反对不适应杂交的自然选择可能会导致物种特有的生殖器分化。在这一背景下，在一对物种中，同域种群之间的交配特征的差异可能比异地种群之间的差异更大，这就是所谓的生殖特征置换(RCD)。然而，在近缘物种的生殖器形态中，RCD的例子很少。此外，导致RCD的过程很少被推断出来。在这项研究中，我们通过密切相关的同翅目地面甲虫物种特有的生殖器形态来研究RCD及其潜在的机制。形态分析表明，在物种特有的生殖器部分，两性的RCD模式。种间杂交得到了配偶选择实验和种群遗传分析的证实，表明广泛的种间基因流动，表明强化是所观察到的RCD最合理的过程。我们发现接触区的移位程度不同，这可能与生殖器进化和物种形成的正在进行的过程相对应。我们的结果支持了同翅目近缘物种生殖器进化的锁钥假说。
Genital morphology reveals rapid diversification among species, and species-specific divergence in genital morphology may result in reproductive isolation and promote speciation. Natural selection against maladaptive hybridization may cause species-specific genital divergence. In this context, divergence in mating traits is expected to be greater between sympatric populations than between allopatric populations in a pair of species, known as reproductive character displacement (RCD). However, there are few examples of RCD in the genital morphology of closely related species. Additionally, processes leading to RCD have rarely been inferred. In this study, we examined RCD and its underlying mechanisms by focusing on species-specific genital morphologies of closely relatedOhomopterusground beetle species. A morphological analysis showed patterns of RCD in species-specific genital parts in both sexes. Interspecific hybridization was confirmed by a mate choice experiment and by a population genetic analysis indicating extensive interspecific gene flow, suggesting that reinforcement is the most plausible process underlying the observed RCD. We found variation in the degree of displacement in contact zones, which may correspond with the ongoing process of genital evolution and speciation. Our results provide support for the lock-and-key hypothesis of genital evolution in closely relatedOhomopterusspecies.
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影响因子：
3.3
作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
通讯作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
影响因子：
2.6
作者：
Langerhans, R. Brian;Anderson, Christopher M.;Heinen-Kay, Justa L.
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Heinen-Kay, Justa L.
影响因子：
4.8
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影响因子：
5
作者：
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通讯作者：
Butlin, Roger K.
影响因子：
1.7
作者：
Sota, T;Takami, Y;Ishikawa, R
通讯作者：
Ishikawa, R