Environmental modulation of same-sex affiliative behavior in female meadow voles (Microtus pennsylvanicus)
Environmental modulation of same-sex affiliative behavior in female meadow voles (Microtus pennsylvanicus)
复制标题
DOI：
10.1016/j.physbeh.2014.12.021
复制
发表时间：
2015-03-01
影响因子：
2.9
通讯作者：
Zucker, Irving
中科院分区：
文献类型：
--
作者：
Ondrasek, Naomi R.;Wade, Adam;Zucker, Irving
人们对温度和食物供应对社会联系和群体形成的影响知之甚少。由于季节性的转变，女性的社会行为促进组装冬季群体的草甸田鼠，我们探讨了同性女性协会在冬季社会性的作用。为了研究冬季典型环境条件对同性雌性亲和行为的影响，将成对的雌性草甸田鼠安置在不同的日照长度、温度和食物供应组合中7周，然后测试其社会偏好。在短的日子（SD），较低的环境温度增加蜷缩与不熟悉的女性，而不干扰现有的社会债券，而较低的温度破坏了债券的保留在长的日子（LD）。轻度食物限制对体重没有明显影响，增强了SD患者的亲和行为，但对LD患者没有影响。第二个实验研究了性别和白天长度对与不熟悉的同性田鼠聚集的倾向的影响。与LD雌性和SD雄性相比，SD雌性花更多的时间与陌生的田鼠群体聚集在一起，没有表现出社会偏好。这些结果表明，冬季的条件下，增强女性之间的亲和行为和预先存在的社会纽带并不妨碍融入新的冬季社会群体。这些行为的适应价值进行了讨论。(C)版权所有© 2014 Elsevier Inc.
The effects of temperature and food availability on social bonds and group formation are poorly understood. Because seasonal transitions in female social behavior facilitate the assembly of winter groups in meadow voles, we explored the role of same-sex female associations in winter sociality. To examine the effects of winter typical environmental conditions on same-sex female affiliative behavior, paired female meadow voles were housed in varying combinations of day length, temperature, and food availability for 7 weeks and then tested for social preference. In short days (SDs), lower ambient temperature increased huddling with unfamiliar females without interfering with existing social bonds, whereas lower temperature disrupted the retention of bonds in long days (LDs). Mild food restriction with no discernible effects on body mass enhanced affiliative behavior in SDs, but not LDs. A second experiment examined the effects of sex and day length on the propensity to aggregate with unfamiliar same-sex voles. Compared to LD females and SD males, SD females spent more time in group huddles with unfamiliar voles and displayed no social preference. These outcomes indicate that winter-like conditions enhance affiliative behavior between females and that pre-existing social bonds do not preclude integration into new winter social groups. The adaptive value of these behaviors is discussed. (C) 2014 Elsevier Inc All rights reserved.