河北省塞北管理区达乌尔黄鼠食性调查

目的研究河北省塞北管理区达乌尔黄鼠的食性情况,为鼠疫防治和评估鼠害提供依据。方法对不同生境捕获的达乌尔黄鼠,按雌、雄、成、幼随机抽样,先称取胃重量,然后剖胃检查,分析胃内容物种类及所占比例。结果达乌尔黄鼠的平均胃重量10.48g,最高胃重量40.50g,胃内容物以植物绿色部分为主的占80%,以种子、根茎为主的占7%,以昆虫为主的占9%;达乌尔黄鼠胃内容物构成6、7月有差别,成幼有差别,雌雄无差别。结论达乌尔黄鼠的食量大,以植物性食物为主,主要食农田作物及牧草的绿色部分,也常食昆虫及植物种子、根茎;其摄取食物种类构成随环境的变化而变化。

Feeding habits of Spermophilus dauricus Brandt in the north frontier administration areas of Hebei province

Objective To determine the feeding habits of Spermophilus dauricus Brandt in the north frontier administration areas of Hebei province,providing the basis for plague prevention and control as well as rodent damage assessment.Methods The S.dauricus Brandt of different habitats were captured and randomly sampled by male,female,adult and infant.The subjects＇ stomachs were weighed,and dissected for analysis of the contents and respective proportion of the components.Results The average stomach weight was 10.48 g,and the maximum was 40.50 g.A total of 80% of the sample stomachs contained mainly the green parts of plants,7% contained mainly seeds and rootstalks,and 9% contained mostly insects.Different composition of the stomach contents was noticed between June and July and between adults and infants,albeit not found between males and females.Conclusion S.dauricus Brandt has a big appetite and intakes mainly vegetable foods,including agricultural crops and the green parts of pasture,and often insects,seeds and rootstalks.The food composition varies with environment.