达乌尔黄鼠种群繁殖特征的研究  

A STUDY ON REPROUCTIVE CHARACTHRISTICS OF SPERMOPHILUS DAURICUS POPULATION

作　　者：王兰芳 米景川 夏连续 潘井坤 李凤[2] 

机构地区：[1]内蒙古流行病防治研究所,010031 [2]内蒙古通辽市卫生防疫站,028000

出　　处：《医学动物防制》1998年第5期1-4,共4页Journal of Medical Pest Control

摘　　要：本文根据1983～1986年在松辽平原区通辽地区的调查,研究了达乌尔黄鼠种群繁殖特征。结果表明:在松辽平原地区,各年份达乌尔黄鼠的怀孕率多在90％以上,平均胚胎数多在8.0以上,胚胎分布呈正态分布。黄鼠在怀孕过程中,有5.48—16.26％的雌体发生胚胎吸收,平均吸收胚胎2.0个左右,吸收胚胎分布呈poisson分布。1984年观察,平均每只雌鼠实际产仔鼠7.622±0.154只,其分布仍为正态分布。During 1983-1986,the reproductive characteristics of Spermophious dauricus population were investiguted in the Songliao plainarea, Inner Mongolia. The results obtained are as follows: 1. The annual average pregnancy rate of adult females Spermophilus dauricus is 96. 37% (93. 99%-98. 94%). The mean No. of embryos is over 8. 0 with only one exception in 1983 about 6. 645. The embryos distribution of 5. dauricus is very concentrative,and proved to be the normal distribution(X2<X20.05,df,P>0. 05)with fit of probability formular of normal dis- tribution theory NP and X2-test. 2. The annual average embryos aborting rate of females adult S. dauricus is about 10. 02% (from 5. 48% to 16. 26%). and it has a positive (direct )relatedness with the pregnancy rate with a correlation coefficient of 0. 9508(P<0.05). The mean No. of absorbed embryos is about 2. 0.and the aborting embryos distribution proved to be the poisson distribution(X2< X20.05,P>0. 05) with fit of the probability formular NP of poisson distribution theory and X-test. 3. The breeding number of S. dauricus at one birth varies from 4 to 11, with an average number of 7. 622± 0. 154, and belong to the high-breeding type.

关 键 词：达乌尔黄鼠 种群 繁殖特征 

分 类 号：Q959.837[生物学—动物学]