对一种来自南美洲的分布广泛的物种——（蛇目，游蛇科）进行的形态学和分子学研究。
A morphological and molecular study of (Serpentes, Dipsadidae), a widespread species from South America.
作者信息
Carvalho Priscila S, Zaher Hussam, da Silva Nelson J, Santana Diego J
机构信息
Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil.
Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista, São José do Rio preto, São Paulo, Brazil.
出版信息
PeerJ. 2020 Nov 25;8:e10073. doi: 10.7717/peerj.10073. eCollection 2020.
BACKGROUND
Studies with integrative approaches (based on different lines of evidence) are fundamental for understanding the diversity of organisms. Different data sources can improve the understanding of the taxonomy and evolution of snakes. We used this integrative approach to verify the taxonomic status of (Duméril, Bibron & Duméril, 1854), given its wide distribution throughout South America, including the validity of the recently described Franco, Fernandes & Bentim, 2007.
METHODS
We performed a phylogenetic analysis of Bayesian Inference with mtDNA 16S and Cytb, and nuDNA Cmos and NT3 concatenated (1,902 bp). In addition, we performed traditional morphometric analyses, meristic, hemipenis morphology and coloration pattern of . and . .
RESULTS
According to molecular and morphological characters, is widely distributed throughout South America. We found no evidence to support that and species are distinct lineages, therefore, is a junior synonym of . Thus, the melanic pattern of is the result of a polymorphism of . Melanic populations of can be found in the Tocantins-Araguaia basin.
背景
采用综合方法（基于不同证据线）的研究对于理解生物多样性至关重要。不同的数据来源有助于增进对蛇类分类学和进化的理解。鉴于（杜梅尔、比布龙和杜梅尔，1854年）在南美洲广泛分布，我们采用这种综合方法来验证其分类地位，包括最近描述的弗兰科、费尔南德斯和本蒂姆，2007年的有效性。
方法
我们对线粒体DNA 16S和细胞色素b以及核DNA Cmos和NT3串联序列（1902碱基对）进行了贝叶斯推断系统发育分析。此外，我们对……进行了传统的形态测量分析、可数性状分析、半阴茎形态和色斑模式分析。
结果
根据分子和形态特征，……在南美洲广泛分布。我们没有发现证据支持……和……物种是不同的谱系，因此，……是……的次异名。因此，……的黑化模式是……多态性的结果。……的黑化种群可以在托坎廷斯 - 阿拉瓜亚盆地找到。
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