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中国陆生哺乳类的易绝灭特征
引用本文:刘学聪,李义明.中国陆生哺乳类的易绝灭特征[J].动物学报,2005,51(4):557-585.
作者姓名:刘学聪  李义明
作者单位:1. 中国科学院动物研究所,北京,100080;中国科学院研究生院,北京,100039
2. 中国科学院动物研究所,北京,100080
基金项目:国家重点基础研究发展规划“973”项目(No.G2000046805),中国科学院创新前沿项目(No.KSCX3IOZ02),创新方向项目(No.KSCX2SW118)资助~~
摘    要:本研究首先收集了我国367个陆生哺乳类物种的4类基本特征数据:个体大小、繁殖力、利用和濒危等级。从类群和特征两个角度出发,用随机检验和回归分析的方法,检验(1)受威胁物种在各科中是否是随机分布的?如果不是,哪些科含有比随机分布更多或更少的受威胁物种?不同类群受威胁概率与人类的利用有何关系?(2)物种受威胁程度与个体大小和繁殖力有何关系?人类的利用是否对受威胁程度与个体大小和繁殖力的关系产生了重要影响?结果表明:受威胁物种在各科中的分布不是随机的,猴科、牛科和猫科含比随机分布更多的受威胁物种,而鼠科和科则相反;不同类群受威胁概率与被利用率成正比;物种受威胁程度相对于繁殖力和身体大小也不是随机的;当控制系统发育关系的影响后,物种受威胁程度随个体增大和繁殖力降低而增大;多元回归分析显示,只有个体大小与物种受威胁程度相关,这一点与其它的研究不同;个体大小与被利用率成正比。过度利用对我国哺乳类多样性受威胁模式产生了重要影响

关 键 词:陆生哺乳类  易绝灭特征  个体大小  繁殖力
收稿时间:2005-03-23
修稿时间:2005-03-232005-05-10

Extinction-prone attributes of terrestrial mammals in China
LIU Xue-Cong,LI Yi-ming.Extinction-prone attributes of terrestrial mammals in China[J].Acta Zoologica Sinica,2005,51(4):557-585.
Authors:LIU Xue-Cong  LI Yi-ming
Abstract:We collected data on four basic traits of 367 terrestrial mammal species in China: body size, fecundity, use and endangered status. Using randomization test and regression analyses, we examine whether: (1) threatened species are randomly distributed among families. If not, which families contain more or less threatened species than would be expected by chance? What is the relationship between threatened proportion and exploitation among taxa? (2) threatened species are randomly distributed with respect to body size and fecundity. What do the relationships between proportion of threatened species and body size/fecundity look like? Has exploitation generated important effects on the threatened pattern? Results show that threatened species are not randomly distributed among families. Felidae, Bovidae and Cercopithecidae contain more threatened species than expected, while Muridae and Soricidae contain significantly fewer threatened species than expected. Proportion of threatened species in families is positively correlated with the proportion of exploited species. Threatened species also are not randomly distributed with respect to fecundity or body size. Once phylogeny has been statistically controlled, threatened status is positively associated with increases in body size and decreases in fecundity. In multivariate stepwise regressions, only body size is a predictor of threatened status. Average body size of species within taxa is positively correlated with the proportion of exploited species. These results suggest that overexploitation has a great effect on the threatened patterns of mammals in China.
Keywords:Terrestrial mammal  Extinction-prone attribute  Body size  Fecundity  
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