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刘铸,姜雪婷,汪青青,王万富,柏阳,姚茜茜,田新民,张隽晟.2021.贵州毕节发现霍氏缺齿鼩.动物学杂志,56(5):776-781.
贵州毕节发现霍氏缺齿鼩
Hoffmann’s Long-tailed Shrew (Chodsigoa hoffmanni) Found in Bijie, Guizhou Province, China
投稿时间:2020-12-18  修订日期:2021-08-31
DOI:10.13859/j.cjz.202105014
中文关键词:  霍氏缺齿鼩  贵州省  分布新记录种
英文关键词:Chodsigoa hoffmanni  Guizhou Province  Distribution of new record species
基金项目:黑龙江省省属高等学校基本科研业务费项目(No. 1355ZD007,1355JG002),病原微生物生物安全国家重点实验室开放课题(No. SKLPBS2143),牡丹江师范学院科研项目(No. GP2020002),黑龙江省自然科学基金项目(No. LH2021C095)
作者单位E-mail
刘铸 牡丹江师范学院生命科学与技术学院 牡丹江 157011 liuzhu590@sohu.com 
姜雪婷 牡丹江师范学院生命科学与技术学院 牡丹江 157011 852616499@qq.com 
汪青青 牡丹江师范学院生命科学与技术学院 牡丹江 157011 1767562579@qq.com 
王万富 牡丹江师范学院生命科学与技术学院 牡丹江 157011 swxwwfw@126.com 
柏阳 牡丹江师范学院生命科学与技术学院 牡丹江 157011 1308619331@qq.com 
姚茜茜 牡丹江师范学院生命科学与技术学院 牡丹江 157011 1819949756@qq.com 
田新民 牡丹江师范学院生命科学与技术学院 牡丹江 157011东北林业大学野生动物资源学院 哈尔滨 150040 swxtxm@126.com 
张隽晟 牡丹江师范学院生命科学与技术学院 牡丹江 157011 swxzjs@126.com 
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中文摘要:
      在贵州省毕节市七星关区野角乡,利用陷阱法捕捉到3号缺齿鼩。标本体形中等,头体长(64.8 ± 3.0)mm,尾长(76.6 ± 1.9)mm,大于头体长,尾尖有一簇白毛,后足长(16.8 ± 0.1)mm。颅骨呈钝圆形,吻突较短,在上颌前部区域逐渐变细。颅全长(19.22 ± 0.19)mm,脑颅宽(9.31 ± 0.09)mm,第2上臼齿间最大宽(5.29 ± 0.08)mm。上门齿1枚,呈镰刀状,上单尖齿3枚,自前向后大小依次递减。红褐色色素沉积主要分布于上下门齿和第一上单尖齿的齿尖。利用缺齿鼩属检索表进行检索,本次采集标本鉴定为霍氏缺齿鼩(Chodsigoa hoffmanni)。通过线粒体细胞色素b(Cyt b)基因全序列比较,本次采集标本与缺齿鼩属霍氏缺齿鼩的系统进化关系最接近,遗传距离在0.026 ~ 0.028之间,与形态鉴定的结果吻合。基于Cyt b基因序列构建的系统发生树,本次采集标本与GenBank下载的霍氏缺齿鼩聚在一个小分支上,进一步证实本次采集3个标本是霍氏缺齿鼩。
英文摘要:
      Chodsigoa hoffmanni belongs to the Chodsigoa genus of the Soricidae family in the order Soricomorpha. The purpose of this research is to expand the distribution range of this species. Three specimens were trapped by the pitfall trap method in Yejiao Township, Qixingguan District, Bijie City, Guizhou Province, China. The specimens are medium-sized (head and body length 64.8 ± 3.0 mm). The tail length (76.6 ± 1.9 mm) is longer than head and body length. The tip of tail is white with a tuft of slightly longer hair. Hind feet length is 16.8 ± 0.1 mm. The skull is round. The rostrum is short and gradually tapering in the premaxillary region. Condyloincisive length is 19.22 ± 0.19 mm. Cranial breadth is 9.31 ± 0.09 mm. One upper incisor is sickle- shaped. Three upper unicuspids gradually decrease in size. The upper maxilla has one premolar and three molars. The third molar is small, with a very narrow talon. Pigmentation only present on tips of upper and lower incisors and first unicuspids. Maximum width across the upper second molars is 5.29 ± 0.08 mm. Based on key to Chodsigoa, the specimens collected are determined to be C. hoffmanni. The genetic distances between C. hoffmanni specimen recorded and our specimens were the nearest between 0.026 and 0.028, based on mitochondrial cytochrome b gene. It was shown that our specimen lay in a monophyletic clade together with C. hoffmanni in the phylogenetic tree. It is further confirmed that the 3 specimens collected are C. hoffmanni.
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