Molecular phylogeny of the snorkel snail Rhiostoma housei, a species complex from Thailand with descriptions of three new species

IF 1.8 2区生物学 Q3 EVOLUTIONARY BIOLOGY

Invertebrate Systematics Pub Date : 2023-03-31 DOI:10.1071/IS22037

Pongpun Prasankok, C. Sutcharit, E. Jeratthitikul, T. Backeljau, Piyatida Pimvichai

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引用次数: 0

Abstract

ABSTRACT Snorkel snails (genus Rhiostoma) are widely distributed in Indo-China and on the Malay Peninsula. The shell morphology is traditionally used for species identification yet in Thailand, the common snorkel snail, Rhiostoma housei, shows considerable variation in shell morphology within and between populations. Therefore species identifications and delimitations are difficult. We used two mitochondrial DNA fragments (COI and 16S rRNA) and morphological characters to delimit species and infer phylogenetic relationships of Rhiostoma housei s.l. from eight localities in Thailand, representing potential cryptic species suggested by earlier allozyme and karyological data. Results revealed four distinct clades from different geographic areas in Thailand. Species delimitation analyses confirmed the clades as four separate species and a geometric morphometric analysis demonstrated subtle but consistent conchological differences between the four clades. The high COI sequence divergences among the four clades (mean: 14.8%; range: 10.3–16.5%) further supported the species level recognition. As a consequence, three new species are described from Thailand: R. khoratense, sp. nov., R. nakwangense, sp. nov. and R. phunangense, sp. nov. ZooBank: urn:lsid:zoobank.org:pub:EE534749-9346-4972-BF2E-3B5D0EB8AED8

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泰国一种复种蜗牛的分子系统发育及三新种描述

摘要浮潜螺（Rhiostoma）广泛分布于印度支那和马来半岛。外壳形态传统上用于物种鉴定，但在泰国，常见的浮潜蜗牛Rhiostoma housei在种群内部和种群之间的外壳形态存在相当大的差异。因此，物种识别和划界是困难的。我们使用两个线粒体DNA片段（COI和16S rRNA）和形态学特征来界定泰国八个地方的Rhiostoma housei s.l.的物种，并推断其系统发育关系，代表了早期等位酶和核型数据所暗示的潜在隐蔽物种。结果揭示了泰国不同地理区域的四个不同分支。物种划界分析证实了这四个分支是四个独立的物种，几何形态计量分析表明了四个分支之间微妙但一致的海螺学差异。四个分支之间的高COI序列差异（平均值：14.8%；范围：10.3-16.5%）进一步支持了物种水平的识别。因此，从泰国描述了三个新物种：R.khoratense，sp.nov.，R.nakwangense，sp.nov.和R.phunangense，sp.nov.ZooBank:urn:lsid:ZooBank.org/pub:EE5344749-9346-4972-BF2E-3B5D0EB8AED8

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来源期刊

Invertebrate Systematics 生物-动物学

CiteScore

4.30

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： Invertebrate Systematics (formerly known as Invertebrate Taxonomy) is an international journal publishing original and significant contributions on the systematics, phylogeny and biogeography of all invertebrate taxa. Articles in the journal provide comprehensive treatments of clearly defined taxonomic groups, often emphasising their biodiversity patterns and/or biological aspects. The journal also includes contributions on the systematics of selected species that are of particular conservation, economic, medical or veterinary importance. Invertebrate Systematics is a vital resource globally for scientists, students, conservation biologists, environmental consultants and government policy advisors who are interested in terrestrial, freshwater and marine systems. Invertebrate Systematics is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.