兽类学报 ›› 2021, Vol. 41 ›› Issue (3): 352-360.DOI: 10.16829/j.slxb.150520

• 研究论文 • 上一篇    下一篇

云南省两种兽类新纪录——藏鼩鼱(Sorex thibetanus Kastschenko,1905)和甘肃鼩鼱(Sorex cansulus Thomas,1912)

宋文宇1,2, 王洪娇2, 李弈仙2, 何水旺2, 蒋学龙2   

  1. 1 大理大学病原与媒介生物研究所, 云南省自然疫源性疾病防控技术重点实验室, 大理 671000;
    2 中国科学院昆明动物研究所遗传资源与进化国家重点实验室, 昆明 650223
  • 收稿日期:2020-12-21 出版日期:2021-05-30 发布日期:2021-05-27
  • 通讯作者: 蒋学龙,E-mail:jiangxl@mail.kiz.ac.cn
  • 作者简介:宋文宇(1986-),男,动物学博士,助理研究员,主要从事群落生态学研究.
  • 基金资助:
    第二次青藏高原综合考察研究专题(2019QZKK0501);国家重点研发计划课题(2017YFC0505200)

New records of Tibetan shrew(Sorex thibetanus Kastschenko,1905) and Gansu shrew(Sorex cansulus Thomas,1912) in Yunnan Province

SONG Wenyu1,2, WANG Hongjiao2, LI Yixian2, HE Shuiwang2, JIANG Xuelong2   

  1. 1 Vector Laboratory, Institute of Pathogens and Vectors, Yunnan Provincial Key Laboratory for Zoonosis Control and Prevention, Dali University, Dali 671000, China;
    2 State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
  • Received:2020-12-21 Online:2021-05-30 Published:2021-05-27

摘要: 目前对藏鼩鼱(Sorex thibetanus)和甘肃鼩鼱(Sorex cansulus)的分布范围和生物学资料了解较少。2017年,在云南省西北部的高山区域采集了48号鼩鼱属(Sorex)动物标本。用形态学和基于Cyt b基因的分子系统学对采集标本进行了物种鉴定。结果显示来自4个地点的27号标本形态上与藏鼩鼱相符,来自2个地点的21号标本与甘肃鼩鼱相似,但存在一定差异。基于Kimura-2-parameter的遗传距离显示,藏鼩鼱组内遗传距离为0.46%,甘肃鼩鼱组内遗传距离为0.42%。它们与其它鼩鼱属物种的组间遗传距离分别为10.76%~17.04%和6.59%~14.52%。最大似然(Maximum likelihood)树结果显示,来自云南省西北部的两种鼩鼱动物分别与藏鼩鼱(BS=71%)和甘肃鼩鼱(BS=100%)构成单系。上述结果支持这两种鼩鼱属动物分别为藏鼩鼱和甘肃鼩鼱,均为云南省兽类新纪录。

关键词: 红齿鼩鼱, 区系, 古北界, 横断山

Abstract: Tibetan shrew(Sorex thibetanus) and Gansu shrew(Sorex cansulus) are two poorly known species of the genus Sorex. In 2017, 48 specimens of Sorex were collected in alpine areas of north-west Yunnan. The morphological characteristics and measurements of these specimens were compared with previous specimen records, and their phylogenetic relationships with other Sorex species were assessed based on Cyt b gene. Results show that 27 specimens from 4 sites are morphologically similar to S. thibetanus, while other 21 specimens from 2 sites are morphologically similar to S. cansulus, although with considerable differences. The intraspecific Kimura-2-parameter distance based on Cyt b was 0.46% for S. thibetanus and 0.42% for S. cansulus, while the distances between these two species to other Sorex species were 10.76%-17.04% and 6.59%-14.52%, respectively. Maximum likelihood phylogenetic analyses support the two species are monophyletic to S. thibetanus(BS=71%) and S. cansulus (BS=100%), which both are new mammal records in Yunnan Province.

Key words: Red-toothed shrew, Fauna, Palaearctic, Hengduan Mountain

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