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内蒙古土默特平原长爪沙鼠种群性别及年龄组成的研究

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摘要 检查长爪沙鼠 870 1只 ,雄性 391 5只 ,占 45 .0 0 % ;雌性 4786只 ,占 55.0 0 % ;雄雌比为 1∶1 .2 2。不同年度性别比例有差异 ,同一年度不同季节也有差别。种群年龄组成 ,幼年组 1 2 0 7只 ,占 1 3 .87% ;亚成年组 3452只 ,占 39.67% ;成年组 30 0 2只 ,占 34 .50 % ;老年组 1 0 4 0只 ,占 1 1 .95 %。多数年份以亚成年组构成比最高 ,依次为成年组、幼年组、老年组最低。
出处 《内蒙古预防医学》 2000年第2期49-50,共2页
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