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在被囚禁的达马拉兰地鼠中发现了近亲繁殖抑郁症的证据

David Seager^1,2, Amy E Leedale^1,2,3, Jack Benjamin Thorley^1,2

¹Department of Zoology, University of Cambridge, Cambridge, UK.

Biology letters

|October 29, 2024

概括

亲生生殖抑郁症对达马拉兰鼠的后代的生存和生长产生了负面影响,尽管父母的生殖产量相似. 这些健身成本可能解释了社会鼠的生殖倾斜.

科学领域:

进化生物学是进化的生物学.
行为生态学行为生态学
动物繁殖动物的繁殖

背景情况:

亲生生殖抑郁症降低了后代在相关交配中的适应性.
达马拉兰鼠 (Fukomys damarensis) 避免熟悉的交配伙伴.
合作繁殖系统可以影响交配策略和避免近亲繁殖.

研究的目的:

调查与近亲交配对父母生殖产量和后代发育在达马拉兰德鼠的影响.
量化与这种合作繁殖物种的近亲繁殖相关的健康成本.
探索近亲繁殖抑郁症在社会鼠的生殖倾斜性中的作用.

主要方法:

新生小狗的交叉养育,以创造分开养育的完全兄弟姐妹的繁殖对.
在4年内,兄弟姐妹和无关联对之间的生殖产出 (子大小,间隔) 的比较.
鉴定杂交后代的存活率和生长率,与非亲属对后代的存活率和生长率.

主要成果:

兄弟姐妹对与无关联的对相比, litter 尺寸或间隔间隔没有显著差异.
杂交后代的生长率和生存率明显较低.
这些发现表明,与达马拉兰鼠的近亲繁殖相关的实质性健身成本.

结论:

亲生生殖抑郁症给达马拉兰鼠的后代带来了相当大的健康成本.
这些成本可能会导致社会鼠中观察到的极端繁殖倾斜.
进一步研究像裸鼠这样的相关物种的近亲繁殖成本是有必要的,以了解交配策略的变化.

关键词:

这是一种繁殖繁殖.合作社是一个合作社.抑郁抑郁症抑郁症抑郁症抑郁症亲生繁殖是一种繁殖方式.

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