洞庭平原黑线姬鼠繁殖特性研究  

STUDIES ON THE CHARACTERISTICS OFREPRODUCTION OF STRIPED FIELD MOUSE(APODEMUS AGRARIUS NINGPOENSIS)IN DONGTING PLAIN

作　　者：王勇[1] 陈安国[1] 李波[1] 郭聪[1] 李世斌[1] 

机构地区：[1]中国科学院长沙农业现代化研究所

出　　处：《兽类学报》1994年第2期138-146,共9页Acta Theriologica Sinica

基　　金：国家七五科技攻关项目

摘　　要：１９８６年１０月－１９９０年１０月在湖南省桃源县和汉寿县的稻作区逐月调查，夹捕黑线姬鼠长江亚种（Ａｐｏｄｅｍｕｓａｇｒａｒｉｕｓｎｉｎｇｐｏｅｎｓｉｓ）２７６８只，雌性占４５．６％。主要繁殖期３－１１月，研究期内的月平均怀孕率为４８．６±４．Ｏ％、平均胎仔数为５．３±０．２只。繁殖指数为２．３６±０．２９。以上３个参数及种群性比有季节性变化，４－５月和７－１０月为２个妊娠高峰；雄性睾丸下位率和雌性怀孕率有同步变动的趋势。５个年龄组之间，其性比、怀孕率和繁殖指数差异显著；成体怀孕率与同期种群密度呈极显著负相关。并指出冬季繁殖水平取决于气温。The characteristics of the reproduction of striped field mouse(Apodemus agrariusningpoensis) in Taoyuan and Hanshou of Hunan province were studied from October, 1986to October , 1990. 2 768 specimens were collected. 1. The total sex ratio♀/(♀+♂)×100%)of the striped field mouse was 45.6%,and it was below 50%over years. The sex ratio was over 50% in age groups Ⅰ, and be-low 50%in age group、、 and Ⅴ, and it decreased gradually from age group Ⅰto Ⅴ.2. The main breeding season of the female mouse was from March to November.There were two breeding peaks in a year, the first peak was in April to May and theother was from July to October. The season of the second breeding peak was differentfrom year to year..In main breeding season,the mean pregnant rate,litter size and reproductive in-dex of four years were 48. 6±4.0%,5.3±0. 2 and 2. 36±0. 29. All of these and sex ra-tio fluctuated from month to month. The mean pregnant rate in first breeding peak was65.5% 49.2%and 61.2% 65.6%from July to October. The mean litter size wasbiggest in October(6.2)and smallest in June (4.2). The pregnant rate of age group Ⅴwas 44.0%,and Ⅱ was 20.0%,it increased gradually from age group Ⅱ to Ⅴ. The sexratio,pregnant rate and reproductive index among age groups were significantly related.4.The fluctuations of the rate of testes in scrotum and the rate of female pregnancywere identical.5. The pregnant rate was significantly negative related to the population density. 6. The result of A.a. ningpoensis was different from that of A.a. pallidior and A.a. manchuricus in breeding season, breeding peak, mean litter size and sex ratio. Thebreeding level in winter depended on air temperature.

关 键 词：黑线姬鼠 繁殖 种群密度 

分 类 号：S443[农业科学—农业昆虫与害虫防治]