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《Chinese Journal of Zoology》 2007-03
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Primary Study on the Diet and Reproductive Characteristics of Dipus sagitta in Hunshandake Sandy Land

ZHANG Xin-Jie ①② WANG Guang-He① LIU Wei① HUO Ying-Jun ①② WAN Xin-Rong ①(①State Key Lab of Integrated Management of Pest Insects & Rodents,Institute of Zoology,Chinese Academy of Sciences,Beijing 100080;② The Graduate School of Chinese Academy of Sciences,Beijing 100049,China)  
The monthly killing-trap was applied on the population of the Northern Three-toed Jerboa(Dipus sagitta) in Hunshandake Sandy Land in Inner Mongolia from 2000 to 2006.Monthly food components of the jerboa were analyzed by the food component in stomach of each individual.The results indicated that the leaves and the stems of grass are the main food of the jerboa,which contribute more than 95 percent of the food in April,May,June,September and October.Besides the leaves and stems of grass,jerboas also take a few insects and seeds as food.In July and August,the consumption of the immature plant seeds of the jerboas may reach 35%.However,the jerboas seldom eat matured seeds.In Hunshandake Sandy Land,female jerboas can breed only once in the year.The reproductive period of the jerboas is from May to July.The litter size of the jerboa is ranged from 2 to 3 with a mean about 2.8.Based on current analysis,the pregnant rate of females is 43% in June,48% in July and zero in other months.Males with scrotal testis can be detected form May to August,and the peak value of matured males occurred in June.
【Key Words】: Dipus sagitta Hunshandake Sandy Land Population reproduction Food component
【Fund】: 北京市自然科学基金项目(6052019);; 农业虫害鼠害综合治理研究国家重点实验室开放课题(A5203067)
【CateGory Index】: Q958
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【References】
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【Co-citations】
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