Test of the activity budget hypothesis on Asiatic ibex in Tian Shan Mountains of Xinjiang, China

摘要: Asiatic ibex (Capra sibirica) is a threatened species in China and distributed the mountains of Central Asia. It sexually dimorphic ungulate. The males are much larger than females, except for breeding season, both sexes live separate groups. Many hypotheses have been developed to explain sexual segregation ungulates. These not mutually exclusive, recent years, activity budget hypothesis has received special attention. To test this hypothesis, we studied autumn 2005. According females should spend more time feeding males, degree synchronization be higher same-sex groups mixed-sex Our results consistent with hypothesis. Both spent most feeding, significantly longer standing. Activity indexes female were indicated that ibex, about supported.