The hidden diversity and inland radiation of Sri Lanka’s ground-dwelling geckos of the genus Cyrtodactylus (Reptilia: Gekkonidae)

IF 1.8 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Systematics and Biodiversity Pub Date : 2022-03-29 DOI:10.1080/14772000.2022.2039319
A. Amarasinghe, S. Karunarathna, Patrick D. Campbell, A. Gayan, W. D. B. Ranasinghe, A. de Silva, Z. Mirza
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引用次数: 3

Abstract

The genus Cyrtodactylus has recently been classified phylogenetically into several clades, subclades, groups, and some into Sri Lankan Cyrtodactylus. Certain complexes from the Indian subcontinent have been assigned to the “C. triedrus group”. This group is comprised of medium-sized species (SVL 50.6–105.7 mm) and are composed of five major species complexes: fraenatus, triedrus, deccanensis, jeyporensis, and collegalensis. Among these complexes, the latter four are composed of ground and litter dwelling species, which were previously assigned to the genus Geckoella; and is currently being treated as a subgenus. Cyrtodactylus triedrus, an endemic species of Sri Lanka, has long been considered a widely distributed single species in this part of the world. Based on morphological and phylogenetic evidences, we demonstrate that C. (G.) triedrus is not a single species, but a species complex. We also describe a new species that is restricted to intermediate savanna-mixed dry lowland forested habitats. Furthermore, we resurrect Geckoella punctata, assign it to the genus Cyrtodactylus and designate a lectotype that we redescribe. The genetic divergence across species of the C. triedrus clade varies between 11–26% in the studied fragment of the mitochondrial NADH dehydrogenase subunit 2 gene. The molecular phylogeny of the ground dwelling radiation of the subgenus Geckoella indicates deep splits between the Indian species and Sri Lankan endemic C. (G.) triedrus sensu stricto, and between Indian dry and wet zone clades. Cyrtodactylus (G.). triedrus is restricted to the moist or submontane forests in the Central highlands of Sri Lanka and is redescribed herein based on its holotype. http://zoobank.org/urn:lsid:zoobank:org:pub:3B37037C-EE9F-4011-BEC9-47E1F3BB6779
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斯里兰卡Cyrtodactylus属地面壁虎的隐蔽多样性和内陆辐射(爬行纲:壁虎科)
近年来,在系统发育上已被划分为几个分支、亚分支、群,其中一些被划分为斯里兰卡的环趾足类。来自印度次大陆的某些综合体已被分配到“C”。triedrus集团”。该类群由中等种(SVL 50.6-105.7 mm)组成,由5个主要种群组成:fraenatus、triiedrus、deccanensis、jeyporensis和collealensis。在这些复合体中,后4种由地面和凋落物栖种组成,它们以前被归为壁虎属;目前被视为亚属。三爪蟹是斯里兰卡的特有物种,长期以来一直被认为是世界这一地区广泛分布的单一物种。基于形态学和系统发育的证据,我们证明了三叶瓢虫不是一个单一的物种,而是一个物种复合体。我们还描述了一种新物种,它局限于中间稀树草原-混合干低地森林栖息地。此外,我们复活了斑点壁虎,将其分配到Cyrtodactylus属,并指定了一个我们重新描述的选择型。线粒体NADH脱氢酶亚基2基因片段的遗传差异在11-26%之间。地面栖息辐射壁虎亚属的分子系统发育表明,其在印度种与斯里兰卡特有的c (g) triedrus sensu stricto之间,以及在印度干湿区分支之间存在着深刻的分裂。Cyrtodactylus (g)。三棱藓属植物仅生长在斯里兰卡中部高地的湿润或亚山地森林中,本文根据其全型重新描述。http://zoobank.org/urn:lsid:zoobank:org:pub:3B37037C-EE9F-4011-BEC9-47E1F3BB6779
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来源期刊
Systematics and Biodiversity
Systematics and Biodiversity 环境科学-生物多样性保护
CiteScore
4.10
自引率
0.00%
发文量
46
审稿时长
>24 weeks
期刊介绍: Systematics and Biodiversity is devoted to whole-organism biology. It is a quarterly, international, peer-reviewed, life science journal, without page charges, which is published by Taylor & Francis for The Natural History Museum, London. The criterion for publication is scientific merit. Systematics and Biodiversity documents the diversity of organisms in all natural phyla, through taxonomic papers that have a broad context (not single species descriptions), while also addressing topical issues relating to biological collections, and the principles of systematics. It particularly emphasises the importance and multi-disciplinary significance of systematics, with contributions which address the implications of other fields for systematics, or which advance our understanding of other fields through taxonomic knowledge, especially in relation to the nature, origins, and conservation of biodiversity, at all taxonomic levels. The journal does not publish single species descriptions, monographs or applied research nor alpha species descriptions. Taxonomic manuscripts must include modern methods such as cladistics or phylogenetic analysis.
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