【摘要】 根据１９９１年２－１０月猎自晋东南的２１２只和１９９０－１９９２年狩猎季节猎自山西和陕西省各地的１５１０只草兔眼晶体重的分布规律并参照繁殖资料，确定２２５毫克为区别１年以下及其以上个体的临界重量。秋－冬季种群中，当年兔占８６．３（７２．２－９３．５）％；随着繁殖季节的推移，当年兔的比例逐渐增加。在４０１１只标本中，雌性占５２．３％；其中１２２６只幼体和１９５只成体中分别有雌性５２．４％和５４．４％。在２－９月所获的９１只当年兔有雌性５０．５％，而成体中雌性则有５８．２％。更多还原

【Abstract】 The Cape hares(Lepus capensis)were collected from shanxi and Shaanxi provincesin China during 1990-1993.According to the data of eye lens weight of 212 hares froman investigating site in February-October of 1991 and 1 510 hares from eight sites inhunting seasons and referring to the breeding information,we came to the conclusionthat 225mg may be as a criterion to distinguish animals under one-year-old from olderones. The proportion of juveniles increased with breeding season progress. In fall-winterpopulations,the hares born in the present year accounted for 86.3(72.2-93.5)%,which was clearly higher than those of the other species of the genus Lepus and was con-sidered to have relation to rising of the population amount in the study periods.Therewere 52.3%female in all 4 011 hares shot in fall-winter,52.4%in 1 226 juveniles and54.4%in 195 adults. 50.5%in 91 juveniles shot in February-September was female and58.2%in 91 adults.更多还原