摘要
The taxonomic status of long-tailed field mouse (Apodemus orestes) is still uncertain up to now.Some scholars regarded it as a subspecies or a synonym of dragon field mouse (A.draco),while other scholars considered it a valid species.In the study,five specimens of adult long-tailed field mouse,dragon field mouse and Chevrier's field mouse (A.chevrieri) (as a contrast) were chosen respectively.After treated,with the eyepiece micrometer in the inverted microscope,we made measurements of the widths of hairs and medullas and then calculated the medullary indexes of straight guard hairs from around the mouth,head,back,abdomen and forelimb of each species.The results indicate that,viewing at each of the five parts and the mixture of the five parts,there are no significant differences between A.orestes and A.draco,Significant differences can be found between A.orestes & A.chevrieri and A.draco & A.chevrieri though.The standpoint that A.orestes was listed as a valid species is not supported by this study.
关于长尾姬鼠 (Apodemusorestes)的分类地位 ,一直没有确定。有的认为它是中华姬鼠 (A draco)的一个亚种 ,而有的认为是一个独立的种。分别从成体长尾姬鼠、中华姬鼠和高山姬鼠 (A chevrieri) (对照 )各 5只的胡须、头部、背部、腹部、前肢取毛样 ,清洗和处理后 ,在倒置显微镜下观察 ,用目镜测微尺分别测量和计算出其 5个部位毛发的毛髓质指数。结果表明 :长尾姬鼠与中华姬鼠 5个部位及混合毛发的毛髓质指数无显著差异 ;二者 5个部位及混合毛发的毛髓质指数与高山姬鼠均有显著差异。
基金
四川省重点学科重点资助项目 (SZD0 42 0 )~~
