草兔繁殖生物学的初步研究  

STUDIES ON BREEDING BIOLOGY OF THE CAPE HARE(LEPUS CAPENSIS)

作　　者：卢欣[1] 

机构地区：[1]山西省生物研究所

出　　处：《兽类学报》1995年第2期122-127,共6页Acta Theriologica Sinica

基　　金：山西省自然科学基金

摘　　要：本文分析了１９９１年１－１０月获自山西省东南部丘陵山区以及１９９０－１９９３年１０月至翌年１月获自该省各地草兔的有关繁殖特征。草兔的繁殖季节为１－９月，雄性进入性活动的时间早于雌性。生殖腺测度有明显的季节变化，其峰值在４月和５月。当年兔３－４月龄时性可成熟，但达到性成熟月龄的当年兔只有５１．７％在７、８月参加繁殖。怀孕个体见于２－９月，３月怀孕率最高，此后逐渐下降。胎仔数１－７只，５月最多，年均值３．６只，每只雌兔年产幼兔１２．９只。This paper analyzed breeding data of the cape hares(Lepus capensis)shot in amountain area(35°40’N, 112°20’E)in the northern China from January to October of1991 and other areas (35°20’-40°00’N,110°10’-113°10’E)during hunting seasons(October to January of the next year)of 1990 to 1993.The females began to breed inJanuary,after about one month the males entered sex activity,and ended in Septem-ber.The gonads size showed obvious seasonal changes ,the peak values occurring inMarch and April.The time at which sexual maturity was attained by young hares wasdefined as about 3-4months, but only 51.7%of hares participated in reproductionduring July to August.Pregnant rate varied seasonally,with the higher values in theearly period of breeding season. The litter size based on visible embryos ranged form 1 to7, the highest being in May, and annual mean was3.6.The annual production ofyoung per female was estimated to be 12.9. Compared with other species of the genusLepus, the hares in the study area had higher reproductive intensity, which was consid-ered to have relation to the rise of population amount in the years during which thestudy was carried out.

关 键 词：草兔 繁殖 性成熟 生物学 兔 

分 类 号：S829.1[农业科学—畜牧学]