| 陈美琦,李科,赵玺伟,郭鹏,吴亚勇.2021.四川省雷波县发现紫沙蛇.动物学杂志,56(4):624-630. |
| 四川省雷波县发现紫沙蛇 |
| A Snake New to Sichuan Province, China: Psammodynastes pulverulentus |
| 投稿时间：2020-12-25 修订日期：2021-05-23 |
| DOI：10.13859/j.cjz.202104015 |
| 中文关键词: 紫沙蛇 四川 分布 细胞色素b基因 屋蛇科 |
| 英文关键词:Psammodynastes pulverulentus Sichuan Distribution cytochrome b gene Lamprophiidae |
| 基金项目:四川省科技厅应用基础研究项目（No. 2020YJ0126），宜宾学院科研启动项目（No. 2019QD13） |
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| 中文摘要: |
| 2020年7月，在四川省凉山彝族自治州雷波县采集到1号蛇类标本，基于形态比较和线粒体细胞色素b（Cyt b）基因序列重建的分子系统关系，确定该标本为屋蛇科（Lamprophiidae）紫沙蛇属（Psammodynastes）的紫沙蛇（P. pulverulentus），系四川省蛇类分布新记录种。基于Cyt b基因序列计算的遗传距离显示，来自四川、广西、广东、云南、海南、福建、纳米比亚的紫沙蛇个体之间遗传距离为3.6% ~ 9.9%，差异较大，其种下关系亟待进一步研究和厘定。 |
| 英文摘要: |
| An unidentified snake was collected at a freshly reclaimed hillside in Qianwanguan Township, Leibo County, Sichuan Province (103°50′ E, 28°15′ N) during a reptile diversity survey in Sichuan Province in late July 2020. We conducted Bayesian and maximum likelihood phylogenetic analyses basis on a mitochondrial cytochrome b (Cyt b) DNA sequence to ascertain the phylogenetic position of this specimen (p-distance ≥ 3.6%). Furthermore, the newly specimen can be diagnosed as Psammodynastes pulverulentus by a combination of pholidosis characters, which is the new snakes fauna in Sichuan Province. On the basis of 17 individuals of P. pulverulentus from Sichuan, Guangxi, Guangdong, Yunnan, Hainan and Namibia, we recognize for the first time a complex intraspecific phylogeny of P. pulverulentus, and to better solve this issue, more detailed samples and more markers are needed. |
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