鼠在不熟悉的同性同类之间互动偏好中显示了定性性别差异
Yuki Ippongi1, Yasushi Kiyokawa1, Yukari Takeuchi1
1Laboratory of Veterinary Ethology, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan.
Behavioural processes
|October 29, 2025
概括
雄性老鼠更喜欢基因相似的陌生老鼠,而雌性老鼠更喜欢新鲜的陌生菌株. 这项研究揭示了基于遗传关系和新奇性的大鼠社会互动偏好的基于性别的差异.
科学领域:
- 行为神经科学 行为神经科学
- 动物行为 动物行为
- 动物的社会认知
背景情况:
- 动物的社会行为受到群体组成和个体识别的影响.
- 鼠株信息在同类社会互动中起作用.
- 以前的研究表明,雄性Wistar老鼠更喜欢熟悉的菌株而不是新鲜的菌株.
研究的目的:
- 为了调查雌性大鼠是否表现出与雄性相似的菌株偏好.
- 为了确定雌性大鼠在社会互动中是否优先考虑遗传相似性或新奇性.
- 为了探索基于性别的差异在老鼠的社会行为对陌生同类.
主要方法:
- 使用三室装置进行60分钟的偏好测试.
- 观察了雌性Wistar大鼠与Wistar,Sprague-Dawley (SD) 和Fischer344 (F344) 鼠株的社会相互作用.
- 进行了三项实验,以确认菌株偏好并排除厌恶.
主要成果:
- 与Wistar大鼠相比,雌性Wistar大鼠与Fischer344 (F344) 大鼠的相互作用增加.
- 雌性Wistar大鼠与Sprague-Dawley (SD) 大鼠的交互比Wistar大鼠更多,但与SD和F344大鼠的交互类似.
- 结果不能归因于对Wistar大鼠的厌恶.
结论:
- 鼠与不熟悉的同性同类的社会互动显示出显著的性别差异.
- 雄性大鼠更喜欢与具有更大的遗传相似性菌株进行交互.
- 在选择社会伙伴时,雌性老鼠优先考虑新奇性而不是遗传相似性.
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