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文摘
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2002年10月至2003年12月,在可可西里对藏原羚(Procapra picticaudata)的集群行为进行了初步研究.将其集群划分为雌性群、雄性群、母仔群、雌雄混群和独羚5种类型.共统计藏原羚924群次,计3643只次.其中,雌性群525群次,占56.8%,为最多的集群类型;其余为独羚(26.1%)、雄性群(11.0%)、母仔群(3.0%)和雌雄混群(3.0%).不同大小集群的比例亦有极显著差异,其中2-10只的集群占70.0%,独羚占26.1%,其余为3.9%;最大集群为17只.另外,选择2-8只的集群的个体数占72.9%,选择8只以上集群的个体数为20.5%,独羚仅占6.6%,选择不同大小集群的个体数的差异也极为显著(P<0.001).除独羚外,其余4种集群类型的集群大小存在极显著差异.独羚作为一种特殊的集群类型,其雄性个体的比例占到68.1%,这说明雄性个体比雌性更容易形成独羚.总体而言,藏原羚的集群以雌性群为主,最适集群大小为2-8只. |
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其他语种文摘
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The Tibetan gazelle (Procapra picticaudata) is an endangered species inhabiting the Qinghai-Tibetan Plateau. From October 2002 to December 2003 , we observed 924 groups (3643 individuals) of Tibetan gazelles in Hoh Xil region. These groups could be classified into five types. Female groups (525) were the major type, accounting for 56. 8%. Solitary gazelle (a special group type), male groups, mother-calf .groups and mixed groups made up 26. 1% , 11.0% , 3.0% and 3.0% , respective-ly. Group size ranged from one to 17 individuals. Groups of 2 - 10 individuals, solitary gazelle groups and larger groups ( > 10 individuals) accounted for 70. 0% , 26. 1% and 3. 9% , respectively. 72. 9% of gazelles were observed in group with sizes of 2 - 8 individuals, while 20. 5% were observed in group sizes > 8 and 6. 6% were solitary. A chi-square test showed that the frequencies of individuals in differ-ent group sizes were significantly different (P<0.001). Group sizes varied significantly among different group types (Kruskal-Wallis H test, P <0. 001). There were significantly more males (68. 1% ) than fe-males (P<0.001) in solitary groups. To sum up, female group was the main group type of Tibetan ga-zelles, and the optimal group size was 2-8 individuals. |
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来源
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生物多样性
,2004,12(5):488-493 【核心库】
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DOI
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10.17520/biods.2004060
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关键词
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可可西里
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Procapra picticaudata
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集群类型
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集群大小
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地址
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中国科学院西北高原生物研究所, 西宁, 810001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-0094 |
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学科
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动物学 |
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基金
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青海省科技攻关重大项目
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中国科学院知识创新工程领域前沿项目
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文献收藏号
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CSCD:1616440
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