摘要
2018年11月,在西藏自治区林芝地区波密县扎木镇(29°48′25″N,95°41′56″E)海拔3400 m处捕获1只缺齿鼩属动物。该个体背毛深灰色,腹面毛色稍淡,呈苍灰色;尾长明显大于头体长,背腹异色不明显,尾部末端缺少簇毛;头骨坚固,头盖骨隆起明显,颧骨板很窄,齿式3.1.1.3/2.0.1.3=28,这些特征与烟黑缺齿鼩(Chodsigoa furva)的鉴别特征一致。通过测定其Cyt b基因全序列,并结合从GenBank下载的缺齿鼩属已有同源序列构建的最大似然树显示,该个体与烟黑缺齿鼩聚为一支(支持率BS为100),与云南地区烟黑缺齿鼩的遗传距离在2.25%~2.34%之间。基于以上形态和分子结果确认该个体为烟黑缺齿鼩,是该物种在西藏的首次分布记录。
The Dusky long-tailed shrew(Chodsigoa furva)is one of the least known shrews.Currently,only five specimens are recorded.In November 2018,a specimen of Chodsigoa was collected from Zhamu,Bomi,Linzhi,Tibet(29°48′25″N,95°41′56″E)at an altitude of 3400 m.We compared its morphology with that of other species in the genus.We also sequenced the complete Cytochrome b gene(Cyt b)and obtained homologous sequences of other Chodsigoa species from GenBank.Maximum-likelihood inference and Kimura 2-parameter(K2P)distances were used to estimate the phylogenetic status of the specimen.The dorsal pelage of the specimen is dark gray and the ventral pelage is imperceptibly lighter;the tail is obviously longer than the head and the body length,dark brown above and slightly pale below,and naked at the tip.Its skull is strong,its braincase is well-domed,and the zygomatic plate is very narrow(Fig.1,Table 1),which is consistent with the characteristics of Chodsigoa furva.The maximum likelihood tree based on the complete Cyt b gene showed that the individual forms a monophyletic clade with other specimens of C.furva(popularity rating BS=100,Fig.2).The genetic distance between them was 2.25%﹣2.34%.Based on the morphological and molecular evidence,we confirm that the individual belongs to C.furva,making it the first record of this species in Tibet,China.
作者
张敏
裴枭鑫
曲潍滢
陈中正
蒋学龙
ZHANG Min;PEI Xiao-Xing;QU Wei-Yin;CHEN Zhong-Zheng;JIANG Xue-Long(College of Life Sciences,Anhui Normal University,Wuhu 241000;Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming 650201;School of Ecology and Environment,Anhui Normal University,Wuhu 241002,China)
出处
《动物学杂志》
CAS
CSCD
北大核心
2021年第6期865-870,共6页
Chinese Journal of Zoology
基金
国家自然科学基金项目(No.31900318)
安徽省自然科学基金项目(No.2008085QC106)
第二次青藏高原综合科学考察项目(No.2019QZKK0501)。
