中国媒介生物学及控制杂志

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小毛足鼠种群年龄鉴定和组成的研究

董维惠1;侯希贤1;周延林2;王利民2;鲍伟东3   

  1. 1中国农业科学院草原研究所 呼和浩特010010;2内蒙古大学生态与环境科学系;3北京林业大学资源与环境学院
  • 出版日期:2001-06-20 发布日期:2001-06-20

Study on the Division of Age Group and the Age Composition of Population of Desert Hamster

DONG Wei-hui#; HOU Xi-xian; ZHOU Yan-lin; et al   

  1. Grassland Research Institute, Chinese Academy of Agricultural Sciences, Hohhot,010010
  • Online:2001-06-20 Published:2001-06-20

摘要: 目的:研究鄂尔多斯沙地草场小毛足鼠种群的年龄鉴定及组成。方法:1991~1995年每年4~10月在沙地草场6种生境内,利用直线夹日法调查,捕获鼠按常规称重、测量、解剖、称其胴体重,利用胴体重将5年的标本按年度、雌雄分别作次数分配,鉴定种群年龄。结果:划分成4个年龄组,胴体重分别为幼年组≤7.0g,亚成年组7.1~9.0g,成年一组9.1~12.0g,成年二组≥12.1g。小毛足鼠种群年龄组成的年度和季节变化明显。结论:利用胴体重鉴定小毛足鼠年龄的方法比较准确,且简单方便,便于在现场操作和应用。

关键词: 小毛足鼠, 年龄鉴定, 年龄组成

Abstract: Objective:Study on the diovision of age group and composition of population of desert hamster.Methods:A total number of 2161 specimen were collected,among which 1089 were males and 1072females.With the body excluding viscera the speciemens were divided into four age groups.Result:The standards of these age groups were listed below:GroupⅠJuvenile:The body weight excluding viscera was ≤7.0g.GroupⅡSubadult:The body weight excluding viscera was 7.1-9.0g.Group Ⅲ Adult(I):The body weight excluding viscera was 9.1-12.0g.Group Ⅳ Adult(2):The body weight excluding viscera was≥12.1g.Conclusion:The population age composition of desert hamster was seasonal changes.