Are bolder individuals more likely to choose heterospecific mates? A test in cyprinid fishes
Are bolder individuals more likely to choose heterospecific mates? A test in cyprinid fishes
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更大胆的人更有可能选择异种伴侣吗？
DOI：
10.1007/s10164-020-00646-2
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发表时间：
2020
影响因子：
0.9
通讯作者：
Itsuro Koizumi
中科院分区：
文献类型：
--
作者：
Atsumi Keisuke;Itsuro Koizumi
不同物种之间的交配在自然界中无处不在。虽然环境条件和人口密度已被证明会影响异种交配的发生，但对个体特征的潜在作用知之甚少。在这里，我们研究了大胆和配偶选择的CON和异种鲤科鱼类（Pseudaspius sachalinensis），自然杂交与同类物种之间的关联。我们发现，在出现的测试和偏好异种雌性的冒险倾向之间存在正相关。这一发现表明，大胆的男性可能更喜欢新的表型，或者可能会为他们的交配伴侣做出错误的选择。
Mating between different species is ubiquitous in nature. While environmental conditions and population density have been shown to affect the occurrence of heterospecific matings, much less is known about the potential role of individual characteristics. Here, we examined the association between boldness and mate choice to con- and heterospecifics in a cyprinid fish (Pseudaspius sachalinensis) which naturally hybridizes with congeneric species. We found a positive correlation between risk-taking tendency in an emergence test and a preference for heterospecific females. This finding suggests that bolder males may prefer novel phenotypes or are likely to make a wrong choice for their mating partners.