湖南省爬行动物新纪录——华西腹链蛇及其系统发育分析

A New Reptile Record from Hunan Province -- Hebius maximus and lts Phylogenetic Analysis

摘要

2023年5月24日于湖南省高望界国家级自然保护区(28°41′36″N, 110°09′30″E; 212 m)采集到东亚腹链蛇属(Hebius)一雌性物种标本, 经形态特征比较, 符合华西腹链蛇(Hebius maximus)形态描述; 基于线粒体cytb基因构建的东亚腹链蛇属部分物种的贝叶斯系统发育树显示, 该标本与华西腹链蛇(H. maximus)聚为一支, 其遗传距离为1.7%~2.2%。综合形态数据与系统发育分析, 确定此次采集到的标本为华西腹链蛇。同时, 根据已有研究对华西腹链蛇在中国分布情况的报道, 确定该标本系湖南省分布新纪录。本研究将湖南省东亚腹链蛇属种类提升至8种。

Abstract

A specimen of genus Hebius was collected from Gaowangjie National Nature Reserve (28°41′36″N, 110°09′30″E; 212 m) in Hunan Province on May 24, 2023. Through comparison of morphological characteris-tics, it was found that the reptile species was in accord with the morphological description of Hebius maxi-mus. The Bayesian phylogenetic tree of Hebius based on mitochondrial cytb genes showed that the specimen was clustered into a branch with H. maximus, with a genetic distance of 1.7%~2.2%. Based on these analy-ses, the specimen can be identified as H. maximus. At the same time, according to the reported distribution of H. maximus in China, it proved to be a new record in Hunan. Therefore, up to now there are eight species of genus Hebius recorded in Hunan Province.

关键词

湖南省 / 高望界国家级自然保护区 / 华西腹链蛇 / cytb基因

Key words

Hunan Province / Gaowangjie National Nature Reserve / Hebius maximus / cytb gene