冬春季矮岩羊集群特征比较  

Comparative study on group characteristics of dwarf blue sheep (Pseudois schaeferi) in spring and winter

作　　者：刘国库[1] 周材权[1] 杨志松[1] 龙帅[1] 潘立[1] 曾国伟[2] 李开俊[2] 唐伦[2] 

机构地区：[1]西华师范大学生命科学学院珍稀动植物研究所,西南野生动植物资源保护教育部重点实验室,四川省环境科学与生物多样性保护重点实验室,四川南充637009 [2]巴塘县林业局,巴塘627650

出　　处：《生态学报》2010年第9期2484-2490,共7页Acta Ecologica Sinica

基　　金：国家自然科学基金资助项目(30570275,30770256);四川省青年科技基金资助项目(06ZQ026-025);四川省教育厅预研资助项目(2005C1011);四川省重点学科重点资助项目(SZD0420);教育部新世纪优秀人才支持计划资助项目

摘　　要：2007年10月至12月、2008年11月中旬至2009年1月中旬和2009年3月至5月,采用样线法对四川竹巴笼自然保护区矮岩羊冬春季的集群特征进行了研究,春季共观察到73群451只矮岩羊,冬季共观察到170群1036只矮岩羊。发现春季平均群大小为6.18±5.186,最大群34只;冬季平均集群大小为6.65±4.564,最大群24只;春冬两季矮岩羊集群大小季节性变化不显著(P>0.05)。在观察到的矮岩羊中,冬春两季矮岩羊集群都以混合群为主,分别占57.20%和45.20%;与春季相比,冬季混合群和独羊出现频率增高,而春季雌性群和母仔群增多;2-8只的集群冬季109群,春季56群,分别占总群数的64.12%和76.71%;9只以上的集群冬季46群,春季15群,分别占总群数的20.06%和20.55%。说明矮岩羊主要以2-8只的小群为主。冬季雌雄比为1∶0.64;雌幼比为1∶0.77;春季雌雄比为1∶0.72;雌幼比为1∶0.81。Group characteristics of dwarf blue sheep（Pseudois schaeferi） were studied with line transect method and fixed-point observation method in Zhubalong Nature Reserve of Sichuan Province during winter（in 2007,2008） and spring（from March to May in 2009）.Among the individuals of the dwarf blue sheep observed,a total of 73 groups including 451 individuals of dwarf blue sheep were accumulatively observed in spring and 170 groups including 1036 individuals in winter.The maximum group observed including 34 individuals,and the mean group size was（6.18±5.186） in spring.The maximum group observed including 24 individuals in the winter and the mean group size was（6.65±4.564）.The mean group size had no significant difference between spring and winter（P〉0.05）.Mixed group was the main group type in winter,and the frequency was 57.20%.The mixed group and the mother-baby group were the main group types in spring,and the frequency were 45.20% and 26.03% respectively.Compared to spring,the mixed group and the solitary occupied higher frequency in winter.However,the main types in spring were the female group and the mother-baby group.Mann-Whitney U tests indicated that during different seasons,the changes of group size of mixed group,female group were not significant（both P 〉0.05）.But the size of the male group（P 〈0.05） and the Ewe-lamb group（P〈0.05） change significantly;Chi-square criterion indicated both in spring and winter,the group sizes among different group types of dwarf blue sheep were pole significant（P 〈0.01） Kruskal-Wallis H tests indicated that the differences group types were not significant（P 〉0.05）between spring and winter.The solitary were seldom seen in both winter（15 times） and spring（2 times）,including thirteen males and two females in winter,two females in spring,with the frequencies 8.82% and 2.74% respectively;dwarf blue sheep were frequently seen in small herds of 2 to 8 individuals,with the frequencies of 64.12% in winter（165 times） and 76.

关 键 词：冬季 春季 矮岩羊 集群特征 竹巴笼自然保护区 

分 类 号：Q958.1[生物学—动物学]