小毛足鼠繁殖生态研究  

STUDY ON REPRODUCTIVE ECOLOGY OF Phodopus roborovskii POPULATION

作　　者：侯希贤[1] 董维惠[1] 周延林[2] 王利民[2] 

机构地区：[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,呼和浩特010021

出　　处：《Zoological Research》2000年第3期187-191,共5页动物学研究（英文）

基　　金：中国农业科学院院长基金资助项目

摘　　要：1991～ 1995年每年 4～ 10月的各月中旬 ,在内蒙古伊克昭盟达拉特旗沙地草场上 ,不同生态环境中共布放 10 1845个夹日 ,捕获鼠 6 32 5只 ,其中小毛足鼠 (Phodopusroborovskii) 2 2 17只 ,占 35 0 5 %。根据胴体重划分成 4个年龄组 ,5年总的性比为 49 6 1% ,接近 1∶1,无季节差异。雄性繁殖期为 9个月 (2～ 10月 ) ,有年间差异。雌性繁殖力随着年龄的增长而增高 ,亚成年组、成年Ⅰ组和成年Ⅱ组的怀孕率分别为 3 77%、34 2 7%和 5 1 6 0 %。雌性平均胎仔数为 (6 2 2± 1 6 3)只。雌性繁殖期 8个月 (3～ 10月 ) ,一年有 2个繁殖高峰。The study was carried out on sandy pasture in the middle ten days of each month from April to October during 1991～1995 in Dalate County,Inner Mongolia. A total efforts of 101845 trap day wasmadeand6325rodentswerecapturedamongwhich2?217 specimens were Phodopus roborovskii .The results obtained were as follows:1) Sex ratio (♂/♀) of Phodopus roborovskii population in this area was close to 1∶1. 2) The reproductive strength of both males and females increased with ages 3) Reproductive periods of males and females were from February to October and from March to October respectively.

关 键 词：小毛足鼠 繁殖特征 繁殖生态 雌雄性比 繁殖指数 

分 类 号：Q958[生物学—动物学]