Postcopulatory consequences of female mate choice in a fish with alternative reproductive tactics
Postcopulatory consequences of female mate choice in a fish with alternative reproductive tactics
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采用替代生殖策略的鱼雌性配偶选择的交配后后果
DOI：
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
S. Balshine
中科院分区：
文献类型：
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作者：
J. Fitzpatrick;D. Earn;C. Bucking;P. M. Craig;S. Nadella;C. Wood;S. Balshine
配偶选择在第二性特征的进化中起着众所周知的作用，第二性特征在交配前竞争中很重要。然而，很少有研究将配偶选择与交配后竞争特征的进化联系起来。在这里，我们探讨了雄性交配行为和雌性配偶选择的变化如何影响雄性在生殖性状上的投资，从而增强精子竞争，这是一种交配后的雄性竞争形式。通过结合野生平鳍鱼（Porichthys notatus）的生态和生理数据，我们发现雌性配偶选择与雄性生殖策略之间以及使用相同生殖策略的雄性之间的精子竞争风险不均衡有关。与体型较小的雄性守卫者相比，体型较大的雄性守卫者吸引了更多的雌性，并且经历了更高的绿帽子企图率。反过来，体型较大的雄性守卫者似乎适应了这种增加的精子竞争风险，比体型较小的雄性守卫者产生更快的精子。运动鞋雄性（体型最小的雄性）的精子游得更快，精子中部较大，精子头部较小。这些结果表明，雌性的选择可以放大在生殖策略之间和内部作用于雄性的选择梯度。
Mate choice plays a well-known role in the evolution of secondary sexual traits important in precopulatory competition. However, few studies have linked mate choice with the evolution of postcopulatory competitive traits. Here, we explore how variation in male mating behaviors and female mate choice influences male investment in reproductive traits that enhance sperm competition, a form of postcopulatory male–male competition. By combining ecological and physiological data from wild plainfin midshipman (Porichthys notatus), a marine fish species with 2 alternative reproductive tactics (guarder and sneaker males), we show that female mate choice is associated with uneven sperm competition risk between male reproductive tactics as well as among males using the same reproductive tactic. Larger guarder males attracted more females and experienced higher rates of attempted cuckoldry compared with smaller guarder males. In turn, larger guarder males appear adapted to this increased sperm competition risk, producing faster sperm than smaller guarder males. Sneaker males (the smallest males of all) had faster swimming sperm, with larger sperm midpieces and smaller sperm heads than did guarder males. These results suggest that female choice can amplify the selection gradient acting on males both between and within reproductive tactics.
与发声鱼的信号识别和偏好相关的声学参数的行为评估。
DOI：
10.1121/1.423938
发表时间：
1998
期刊：
The Journal of the Acoustical Society of America
影响因子：
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作者：
McKibben,JR;Bass,AH
通讯作者：
Bass,AH