在寒冷中交配. 在寒冷中交配. 长时间的精子储存为雄性蝙蝠在冬季的强制性交配提供了机会
Takahiro Sato1,2, Toshie Sugiyama2, Tsuneo Sekijima2
1Graduate School of Technology, Industrial, and Social Sciences, Tokushima University, Tokushima, Japan.
Frontiers in physiology
|September 25, 2023
概括
经历精子竞争的雄性蝙蝠储存精子,并在冬眠期间尝试强迫性交配,以增加交配机会. 这种行为,尽管有生理回归,但在受精延迟的物种中增强了受精的成功.
科学领域:
- 生殖生物学 生殖生物学
- 动物行为 动物行为
- 冬眠生理学 冬眠生理学
背景情况:
- 异热哺乳动物的冬眠通常会延迟繁殖.
- 在冬眠的蝙蝠中延迟受精,为精子竞争创造了更长的窗口.
- 预计雄性通过扩大交配机会来适应增加的精子竞争.
研究的目的:
- 为了研究小马蝙蝠 (Rhinolophus cornutus) 的生殖周期.
- 为了确定雄性蝙蝠是否保留冬眠期间性行为的生殖生理.
- 为了检查雄性是否试图在冬眠期间与雌性交配.
主要方法:
- 现场观察蝙蝠的行为.
- 生殖周期的组织学检查.
- 对精子储存和水平的分析.
主要成果:
- 雌性在冬眠期间储存秋季交配的精子,以获得一年一度的后代.
- 雄性蝙蝠在整个冬季都将运动精子存储在囊中,尽管丸回归和丸水平降低.
- 雄性在冬眠唤醒期间与的雌性进行强制性交配.
结论:
- 流行性精子储存允许雄性在冬眠期间扩展他们的交配潜力.
- 强迫性交配可以通过绕过雌性选择来增加雄性交配成功.
- 冬眠期间的性胁迫可能会影响雌性未来交配地点的选择.
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