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室内小鼠的雄性生殖策略:一致的个体差异,内在因素和密度效应
Fragkiskos Darmis1, Alexandros Vezyrakis1,2, Anja Guenther1
1Research Group Behavioural Ecology of Individual Differences, Max Planck Institute for Evolutionary Biology, Plön, Germany.
The Journal of animal ecology
|April 12, 2025
概括
在小鼠中,像领土或漫游这样的替代繁殖策略 (ART) 是可重复的,但灵活的,受年龄和人口规模等因素的影响. 这些策略显示出具有相同健身结果的个性组成部分.
科学领域:
- 行为生态学 行为生态学
- 进化生物学 进化生物学
- 动物行为 动物行为
背景情况:
- 替代生殖策略 (ARTs) 是男性用于确保受精的策略,通常与身体质量等地位有关.
- 以前的研究往往过于简化了ART,专注于地位,忽视了健康效应或非繁殖的男性.
研究的目的:
- 第一次描述和分析雄性小鼠 (Mus musculus domesticus) 的替代生殖策略 (ART).
- 研究ART的可重复性和灵活性,确定战术选择和过渡的预测因素,并评估适应性和生理差异.
主要方法:
- 在半自然种群中研究了244只雄性小鼠多个月,将它们分类为领土或漫游.
- 使用空间数据和分析的重复性,预测因素 (社会,内在因素) 和健身/生理相关的验证的战术分配.
主要成果:
- 战术选择是可重复的,但雄性在领土和漫游战略之间灵活切换.
- 战术选择与群体,年龄,操作性比和人口规模相关.
- 与流浪者相比,领土雄性具有更高的繁殖概率,但较低的淋巴体指数.
结论:
- 小鼠中的ART表现出个性组成部分,战术选择是一个多方面的决定.
- 尽管存在差异,但在各个战术中,平均健康水平是相同的,这表明不同的选择性压力塑造了ART.
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