期刊
JOURNAL OF ARID ENVIRONMENTS
卷 103, 期 -, 页码 31-35出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jaridenv.2013.12.002
关键词
Breeding selection; Capture-recapture method; Group living; Lasiopodomys brandtii; Life history; Survival selection
资金
- Natural Science Foundation of China [30971929, 30671380]
- State Key Laboratory for Integrated Management of Pest Rodents and Insects
- Mississippi State University Forest and Wildlife Research Center
Winter survival is an important fitness component of non-hibernating small mammals in northern latitudes. Body sizes are related to many life history traits influencing the fitness of animals. Counter-balancing selective forces of survival selection may optimize autumn body weight to maximize winter survival of non-hibernating small mammals. Brandt's voles (Lasiopodomys brandtii) are non-hibernating and live in groups year round. We live trapped Brandt's voles in an enclosure and estimated weekly survival probabilities and daily proportional body weight growth rates of the voles from September 2003 to March 2004. Autumn body weight as an individual covariate explained about 43% of variation in autumn spring survival of the voles. Survival of females and males peaked at body weight of about 33 g and 51 g, respectively, supporting stabilizing survival selection on body sizes of Brandt's voles. However, breeding selection may reduce the optimal body size of female voles. Brandt's voles did not lose body weight during the autumn and winter probably to enhance winter survival. Therefore, Brandt's voles adapt to the energetically demanding winter environments with optimal body size and maximized winter survival. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据