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基因相同的小鼠表达了不同的生殖策略,这取决于现场的社会条件

Matthew N Zipple¹, Caleb C Vogt¹, Michael J Sheehan¹

¹Laboratory for Animal Social Evolution and Recognition, Department of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853, USA.

Proceedings. Biological sciences

|March 19, 2024

概括

小鼠的领土防御取决于领土大小和竞争对手的密度. 较小的领土导致了更好的防御,而入侵者探索了更多但未能确保领土,影响了繁殖的成功.

科学领域:

伦理学伦理学伦理学
行为生态学行为生态学

背景情况:

领土性对于许多物种的生存和繁殖至关重要.
竞争者密度显著影响动物建立和维持领土的能力.

研究的目的:

在不同的社会条件下,研究实验室小鼠 (C57BL/6J) 的替代生殖策略.
检查领土大小和竞争对手密度如何影响领土防御和入侵者行为.

主要方法:

基因相同,年龄相匹配的小鼠被放置在一个户外田间围中,有资源区.
创造了两个社会条件:低密度 (领土比男性多),然后是高密度 (入侵者的引入).
观察和分析了男性领土和入侵者的防御和入侵策略.

主要成果:

捍卫较大的领土的雄性巡逻更多,但在排除入侵者方面效果不佳,而不是较小领土的雄性.
侵入者雄性探索更多,但没有建立领土.
领地雄性比入侵者有更高的生存率和更容易接触雌性.

结论:

领土大小影响了小鼠的防御策略和有效性.
替代策略,比如增加入侵者的探索,不能保证繁殖成功.
成功地获得领土与改善的生存和交配机会有关.

关键词:

肌肉是肌肉的肌肉.漂浮物雄性漂浮物雄性实验室小鼠实验室小鼠社会决定因素的社会决定因素具有领土性,具有领土性.

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