动物学研究 ›› 2018, Vol. 39 ›› Issue (5): 335-347.doi: 10.24272/j.issn.2095-8137.2018.034

所属专题: 哺乳动物 遗传与进化

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林猬属(Mesechinus)分类系统厘定及一新种

艾怀森1,#, 何锴2,3,#,*, 陈中正2,4,#, 李佳琦5, 万韬2, 李权2, 佴文惠2, 王金焕2, 苏伟婷2, 蒋学龙2,*   

  1. 1 高黎贡山自然保护区,云南 保山 678000,中国
    2 中国科学院昆明动物研究所,云南 昆明 650223,中国
    3 京都大学综合博物馆,京都 606-8417,日本
    4 安徽师范大学生命科学学院,安徽 芜湖 241000,中国
    5 环境保护部南京环境科学研究所,江苏 南京 210042,中国
  • 出版日期:2018-09-18 发布日期:2018-07-13
  • 通讯作者: Kai He,Xue-Long Jiang,E-mail:hekai@mail.kiz.ac.cn; jiangxl@mail.kiz.ac.cn E-mail:hekai@mail.kiz.ac.cn; jiangxl@mail.kiz.ac.cn
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Taxonomic revision of the genus Mesechinus (Mammalia: Erinaceidae) with description of a new species

Huai-Sen Ai1,#, Kai He2,3,#,*, Zhong-Zheng Chen2,4,#, Jia-Qi Li5, Tao Wan2, Quan Li2, Wen-Hui Nie2, Jin-Huan Wang2, Wei-Ting Su2, Xue-Long Jiang2,*   

  1. 1 Gaoligongshan National Nature Reserve, Baoshan Yunnan 678000, China
    2 Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming Yunnan 650223, China
    3 The Kyoto University Museum, Kyoto University, Kyoto 606-8501, Japan
    4 College of Life Sciences, Anhui Normal University, Wuhu Anhui 241000, China
    5 Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing Jiangsu 210042, China
  • Online:2018-09-18 Published:2018-07-13
  • Contact: Kai He,Xue-Long Jiang,E-mail:hekai@mail.kiz.ac.cn; jiangxl@mail.kiz.ac.cn E-mail:hekai@mail.kiz.ac.cn; jiangxl@mail.kiz.ac.cn
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摘要: 林猬属(Mesechinus)隶属于劳亚食虫目猬科,主要分布于中国北方、蒙古国和俄罗斯远东地区,是典型的是古北区类群,然而近年却于远在林猬分布区千里之外的中缅边境、云南高黎贡山南段发现林猬种群。通过染色体核型和形态学比对,作者确认该种群在外部形态、头骨牙齿特征以及染色体核型上都与林猬属已知物种不同,将其认定为全新物种,并以中国科学院昆明动物研究所已故研究员王应祥先生的名字将其命名为王氏林猬(M. wangi)。王氏林猬仅发现于云南保山市的三个县,属于极小种群;所有个体存在第四上臼齿,是现生哺乳动物中十分罕见的进化事件。本文作者对林猬属的分类进行了整理,支持小齿猬(M. miodon)与侯氏林猬(M. hughi)为不同物种,尽管二者分布的地理边界尚存疑问。

关键词: 林猬属, 分类学, 形态测量学, 抑制耦联效应, 核型, 新种, 多生臼齿

Abstract: Hedgehogs in the genus Mesechinus (Family Erinaceidae), which include two currently recognized species (M. dauuricus and M. hughi), are distributed from northeast Mongolia to the upper Amur Basin in Russia and adjacent areas in northeast and northern China. In recent years, a population of Mesechinus hedgehogs was discovered from Mt. Gaoligong, southwestern Yunnan, China, far from the known distribution range of the genus. Furthermore, these hedgehogs are the only known population to be distributed at elevations higher than 2 100 m and in sympatry with gymnures. To evaluate the taxonomic status of these hedgehogs, we examined specimens representing Mesechinus taxa in China and further conducted morphometric and karyotypic analyses. Our results supported the existence of four species in China. Specifically, we identified the hedgehogs from Mt. Gaoligong as a new species, Mesechinus wangi sp. nov., and recognized M. miodon, previously considered as a synonym of either M. dauuricus or M. hughi, as a distinct species. Interestingly, we observed a supernumerary M4 on all specimens of Mesechinus wangi sp. nov., which is an extremely rare event in the evolution of mammalian dentition.

Key words: Mesechinus, Taxonomy, Morphometrics, Inhibitory cascade, Karyotype, New species, Supernumerary molar 

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