首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Variations in the demographic structure and dynamics of gelada baboon populations
Authors:H Ohsawa  R I M Dunbar
Institution:(1) Primate Research Institute, Kyoto University, 484 Inuyama, Aichi, Japan;(2) Zoology Institute, University of Stockholm, S-113 86 Stockholm, Sweden;(3) Present address: 33 The Grove, Linton, CB1 6UQ Cambridge, England
Abstract:Summary A comparative analysis of demographic variables for three populations of gelada baboons (Theropithecus gelada) showed that these were determined by a combination of environmental, demographic and social factors interacting in complex ways. Both birth rates and survivorship were found to be adversely influenced by the severity of local climatic conditions. These independently influenced adult sex ratio, which in turn determined the proportion of multimale reproductive units in the population. Mean harem size was found to be independent of all environmental and demographic factors with the sole exception of the proportion of harem-holding males, suggesting that it is mainly a consequence of social factors related to harem fission rates. Migration rates and band fission rates were related to population growth rates, these in turn being determined largely by local mortality and birth rates.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号