A new species of Homonota (Squamata: Phyllodactylidae) from the Uruguayan Savanna

IF 2.3 2区生物学 Q2 EVOLUTIONARY BIOLOGY

Zoologica Scripta Pub Date : 2023-06-20 DOI:10.1111/zsc.12616

Matías M. Malleret, N. F. Pisetta, Nelson J. R. Fagundes, L. Verrastro

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引用次数: 0

Abstract

Cryptic diversity is frequent among lizards from the Neotropical region. In particular, geckos belonging to the genus Homonota exhibit high levels of phenotypic and ecological conservatism. Homonota uruguayensis is endemic to rocky outcrops in the Uruguayan Savanna, and a previous study based on mitochondrial DNA (mtDNA) revealed a highly divergent clade in an isolated population. In this study, we used a set of two mitochondrial (Cytb and 12S) and six autosomal (DMLX, MXRA, PRLR, SNCAIP, H19B and H30B) genetic markers to evaluate the taxonomic status of different populations of H. uruguayensis. We then used morphological data to further check the favoured coalescent model of species delimitation. A careful re‐evaluation of meristic and continuous morphological traits within the H. uruguayensis complex indicated that the new species can be morphologically distinguished. The species tree confirmed the deep divergence times associated with the new species previously reported for mtDNA and indicated congruence among independent gene trees. Overall, the results clearly support the recognition of a new species, based on deep genetic divergence and morphological differentiation. While the full geographic range of the new species has not been thoroughly characterized, the localized endemism in a patch of rocky outcrops surrounded by intense silviculture activity strongly suggest that the new species should be considered to be under some degree of threat.

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标题乌拉圭热带稀树草原单足虫属一新种(鳞片目:毛趾虫科)

在新热带地区的蜥蜴中，隐蔽的多样性很常见。特别是，属于同源壁虎属的壁虎表现出高度的表型和生态保守性。乌拉圭同源虫是乌拉圭大草原岩石露头的特有物种，之前一项基于线粒体DNA（mtDNA）的研究揭示了一个孤立种群中高度分化的分支。在本研究中，我们使用了一组两个线粒体（Cytb和12S）和六个常染色体（DMLX、MXRA、PRLR、SNCAIP、H19B和H30B）遗传标记来评估H。乌拉圭。然后，我们使用形态学数据来进一步检查受欢迎的物种划界联合模型。对H。乌拉圭复合体表明该新种在形态上可以进行区分。物种树证实了与先前报道的mtDNA新物种相关的深度分化时间，并表明独立基因树之间的一致性。总的来说，这些结果清楚地支持了对一个新物种的识别，这是基于深刻的遗传差异和形态分化。虽然新物种的整个地理范围尚未完全确定，但在一片被强烈的造林活动包围的岩石露头中的局部特有性强烈表明，新物种应被视为受到某种程度的威胁。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Zoologica Scripta 生物-动物学

CiteScore

5.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Zoologica Scripta publishes papers in animal systematics and phylogeny, i.e. studies of evolutionary relationships among taxa, and the origin and evolution of biological diversity. Papers can also deal with ecological interactions and geographic distributions (phylogeography) if the results are placed in a wider phylogenetic/systematic/evolutionary context. Zoologica Scripta encourages papers on the development of methods for all aspects of phylogenetic inference and biological nomenclature/classification. Articles published in Zoologica Scripta must be original and present either theoretical or empirical studies of interest to a broad audience in systematics and phylogeny. Purely taxonomic papers, like species descriptions without being placed in a wider systematic/phylogenetic context, will not be considered.