Morphology, phylogeny, and species delimitation of Micryletta (Anura: Microhylidae) reveals a new species from Singapore

IF 2.4 2区 生物学 Q1 ZOOLOGY
A. Sankar, Ingg Thong Law, Ing Sind Law, Rasu Shivaram, R. Abraham, K. Chan
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引用次数: 1

Abstract

The genus Micryletta, also known as paddy frogs, ranges across much of south, east, and southeast Asia. Due to their relatively broad distribution and overall morphological similarities, many species have gone undetected until recently, largely owing to the use of molecular data. Consequently, the species diversity within this genus has quadrupled in just three years from three species prior to 2018, to 12 species in 2021, indicating that the systematics of this genus is still poorly understood. As such, we assembled the most comprehensive molecular phylogeny of Micryletta hitherto including novel sequences from a previously unsampled population from Singapore to assess the species diversity within this genus. In particular, we investigate the population from Singapore whose specific identity remains in question due to the lack of voucher specimens and genetic material. Our results show that the Singapore population represents a strongly supported and distinct lineage that is most closely related to M. inornata sensu stricto from Sumatra, Indonesia. Morphological and species delimitation analyses corroborate its distinction as a new species, which we describe herein as M. subaraji sp. nov. This and recent new taxon discoveries in Singapore demonstrate that the biodiversity of the highly urbanized island-state is still far from being fully realized and underscores the need for continued systematic surveys and protection of remaining habitats.
小虫的形态、系统发育和物种划分(无尾目:小虫科)揭示了一个来自新加坡的新种
水田蛙属,也被称为水田蛙,分布在南亚、东亚和东南亚的大部分地区。由于它们相对广泛的分布和整体形态的相似性,许多物种直到最近才被发现,这主要归功于分子数据的使用。因此,该属的物种多样性在短短三年内翻了两番,从2018年之前的3个物种增加到2021年的12个物种,这表明该属的系统分类学仍然知之甚少。因此,我们收集了迄今为止最全面的Micryletta分子系统发育,包括来自先前未采样的新加坡种群的新序列,以评估该属的物种多样性。特别是,我们调查了来自新加坡的人口,由于缺乏凭证标本和遗传物质,其具体身份仍然存在问题。我们的研究结果表明,新加坡种群代表了一个强有力的支持和独特的谱系,与印度尼西亚苏门答腊的M. inornata sensu stricto最密切相关。形态学和物种划分分析证实了它作为一个新物种的区别,我们将其描述为M. subaraji sp. 11 .这一发现和最近在新加坡发现的新分类群表明,高度城市化的岛国的生物多样性仍远未得到充分认识,并强调了继续系统调查和保护剩余栖息地的必要性。
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来源期刊
CiteScore
4.00
自引率
19.00%
发文量
42
审稿时长
>12 weeks
期刊介绍: Research fields covered by VERTEBRATE ZOOLOGY are ta‍xo‍no‍my, mor‍pho‍logy, an‍at‍omy, phy‍lo‍ge‍ny (mo‍le‍cu‍lar and mor‍pho‍lo‍gy-based), hi‍sto‍ri‍cal bio‍geo‍gra‍phy, and pa‍lae‍on‍to‍lo‍gy of ver‍te‍bra‍tes.
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