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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
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Your Position :Home->Past Journals Catalog->2009 Vol.28 No.1

Diet Overlap among Selected Ungulates in Kekexili Region, Qinghai Province
Author of the article:CAO Yi-fan1, ZHANG Tong-zuo1,2, LIAN Xin-ming1,2, CUI Qing-hu1,2, DENG Dou-dou3, SU Jian-ping1
Author's Workplace:(1. Key Laboratory of Qinghai-Tibetan Plateau Biological Evolution and Adaptation, Northwest Plateau Institute of Biology, the Chinese Academy of Sciences, Xining 810001; 2. Graduate School of the Chinese Academy of Sciences; 3. College of Life Sciences, Wuhan University)
Key Words: Kekexili; ungulate; microhistological analysis of feces; overlap of diet
Abstract:In July 2005 and January 2006, diet overlap was studied among Tibetan sheep(Ovis aries)and domestic yak(Bos grunniens ), as well as among 4 wild ungulates species, Tibetan antelope (Pantholops hodgsoni), Tibetan gazelle (Procapra picticaudata), wild yak (Poephagus mutus) and Tibetan wild ass (Equus kiang) distributed in Kekexili region, Qinghai Province, China, between the cold month (January) and warm month (July) based on microhistological analysis of fecal samples and calculated by Schoener Indices. Results show that the diet overlap of Tibetan wild ass was 63.0%, 48.4%, and 24.1% with Tibetan antelope, wild yak and Tibetan Gazelle in warm month  and 71.6%, 42.0% and 11.4 % in the cold month, respectively. The diet overlap of Tibetan antelope was 52.0% and 33.4% with wild yak, Tibetan gazelle in the warm month and 50.3% and 29.3% in the cold month. The diet overlap of wild yak was 13.1% and 15.9% with Tibetan gazelle in cold and warm months. The results show that among the wild ungulates species in the Kekexili region, Tibetan gazelle and other ungulates have lower food overlap, and the Tibetan antelope, Tibetan wild ass, wild yak have different levels of diet overlap in different seasons   reflecting the complexity of competition and coexistence relations. In addition, there is a high degree of food overlap between domestic yak and domestic sheep and all these wild ungulates.
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