目的调查大理州洱源县小兽类哺乳动物种群结构。
Objective To study the population structure of small mammals in Eryuan Dali.
吸虱是寄生于真兽类哺乳动物体表的专性吸血寄生虫，广布于世界各地。
Sucking lice are exclusively hematophagous ectoparasites of eutherian (placental) mammals, and are worldwide distribution.
研究者说这有可能是由于哺乳动物向北部山脉移动、兽类短缺或是人类越来越偏爱其他的猎物种类造成的。
The researchers say this could be due to a northward range shift in the mammal, a scarcity of the beast, or an increasing human preference for other prey species.
传统的兽类分类学仅把哺乳动物毛皮特征作为参照，多以骨骼和牙齿作为分类依据，淡化了毛和毛被的分类鉴别作用。
Mostly bones and teeth used as a classification of traditional taxonomic zoology. Fur characteristics were counted as a reference, the characteristics of fur and hair were overlooked.
传统的兽类分类学仅把哺乳动物毛皮特征作为参照，多以骨骼和牙齿作为分类依据，淡化了毛和毛被的分类鉴别作用。
Mostly bones and teeth used as a classification of traditional taxonomic zoology. Fur characteristics were counted as a reference, the characteristics of fur and hair were overlooked.
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