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李茂金,王英永,王力军,汪继超,蔡波.2024.海南脆蛇蜥的分类地位研究.动物学杂志,59(2):233-244.
海南脆蛇蜥的分类地位研究
Taxonomic Status of Dopasia hainanensis
投稿时间:2023-04-06  
DOI:10.13859/j.cjz.202423062
中文关键词:  蛇蜥科  脆蛇蜥  海南脆蛇蜥  同物异名  遗传多样性
英文关键词:Anguidae  Dopasia harti  D. hainanensis  Synonym  Genetic diversity
基金项目:海南热带雨林国家公园资源综合调查与监测项目(2023),质兰基金项目(No. 2022100541A),阿拉善SEE青年学者资助项目(No. SEE-B-3709);
作者单位
李茂金 海南省林业集团有限公司 海口 570203 
王英永 中山大学 广州 510275 
王力军 海南师范大学 海口 571158 
汪继超 海南师范大学 海口 571158 
蔡波 中国科学院成都生物研究所 成都 610041 
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中文摘要:
      海南脆蛇蜥(Dopasia hainanensis Yang, 1983)为杨戎生根据1号来自海南吊罗山的标本命名,其形态和分子系统发育关系少有人研究。2018年至2019年间,作者获赠2号来自海南脆蛇蜥模式产地的标本和1号来自脆蛇蜥(D. harti)模式产地的组织样。经过形态特征比较和线粒体Cyt b基因序列分析,发现两地样本Cyt b基因序列的遗传距离很近(仅有4.96%),且形态差异不明显,难以找到典型鉴别特征。本文研究成果支持海南脆蛇蜥和台湾脆蛇蜥(Ophisaurus formosensis)为脆蛇蜥的同物异名,同时认为越南的“海南脆蛇蜥”可能为一未描述的新种或新亚种。鉴于脆蛇蜥种下遗传差异较大,其种下关系亟待进一步研究。
英文摘要:
      [Objectives] Dopasia hainanensis Yang, 1983 was first described based on one specimen from Mt. Diaoluo, Hainan, China by YANG Rong-Sheng. D. hainanensis is the least studied species in the Asiatic genus in China. The relationship between morphology and molecular phylogeny is still largely unknown. [Methods] Between 2018 and 2019, two Dopasia specimens were presented from the type locality of D. hainanensis and one Dopasia samplefrom the type locality of D. harti. After the comparison of the preliminary morphological characteristics, it was found that the two Dopasia specimens from Mt. Diaoluo may be the D hainanensis and the D. harti respectively. In this paper, by adding morphological data of other specimens from Mt. Diaoluo and Mt. Wuyi, combined with mitochondrial cytochrome b (Cyt b) DNA sequence analysis, we further verified the taxonomic status of the D. hainanensis. [Results] Based on comparison of morphological characteristics (Appendix 2) and mitochondrial cytochrome b (Cyt b) DNA sequence (Appendix 1), the two Dopasia specimens from Mt. Diaoluo are the same species. The phylogenetic positions of these specimens (p-distance ≥ 4.96%) from the two places are very close (Fig. 2), and the morphological differences are not obvious, which indicating the difficulty to find the typical distinguishing characteristics. [Conclusion] Therefore, it is supported that D. hainanensis is a synonym of D. harti, and D. formosensis is a synonym of D. harti, and D. cf. hainanensis in Vietnam may be a new species or subspecies that has not been described. In view of the complex intraspecific phylogeny under D. harti, more detailed samples and markers are needed.
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