Identification and Distribution of Wedge Clams (Donacidae: Bivalvia) in Thailand by Geometric Morphometric and Molecular Analysis.

IF 1.5 3区生物学 Q2 ZOOLOGY Zoological Studies Pub Date : 2022-12-29 eCollection Date: 2022-01-01 DOI:10.6620/ZS.2022.61-82

Cheewarat Printrakoon, Sasimanas Unajak, Javier H Signorelli

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Abstract

The phylogenetic relationship of living Thai Donacidae was herein studied. Two methodologies, geometric morphometrics (GM) and genetic analysis of COI sequences, were combined and applied to identify the valid taxa and explain biodiversity and the distribution pattern in this family. A total of 587 living specimens were tested to analyze the shape and size patterns by Elliptic Fourier Analysis (EFA). Shell identification and GenBank sequences were added to construct the phylogenetic relationship and haplotype network. Centroid size was used to identify the specimens to the subgenus level. Donax (Hecuba) scortum, was easily distinguished from other species by Principal Component analysis (PCA) of shell size and shape. Donax (Dentilatona) incarnatus and Donax (Deltachion) semisulcatus semisulcatus were identified using Canonical Variates Analysis (CVA). Pairwise comparison of EFA was used for species level recognition, particularly shape overlap was observed for medium and small shell size. Based on genetic distance and haplotype network of COI sequences, Donax (Latona) faba and D. (Latona) solidus could be grouped in the same clade. Intraspecific and interspecific genetic data variation of some common species in different geographical localities of Thailand was observed. Three distribution patterns of Donax species were observed along the two-marine system of Thailand.

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通过几何形态计量和分子分析鉴定泰国楔蛤（Donacidae: Bivalvia）及其分布。

本文研究了现存泰国多纳科的系统发育关系。结合并应用几何形态计量学（GM）和 COI 序列遗传分析这两种方法来确定有效类群，并解释该科的生物多样性和分布模式。通过椭圆傅立叶分析法（EFA）对 587 个活体标本进行了形状和大小模式分析。通过贝壳鉴定和 GenBank 序列，构建了系统发生关系和单体型网络。利用中心尺寸对标本进行亚属鉴定。通过贝壳大小和形状的主成分分析（PCA），Donax (Hecuba) scortum 很容易与其他物种区分开来。通过卡农变异分析（CVA）确定了Donax (Dentilatona) incarnatus和Donax (Deltachion) semisulcatus semisulcatus。采用成对比较的 EFA 方法进行物种水平识别，特别是观察到中型和小型贝壳的形状重叠。根据 COI 序列的遗传距离和单倍型网络，Donax (Latona) faba 和 D. (Latona) solidus 可归为同一支系。观察了泰国不同地理区域一些常见物种的种内和种间遗传数据变异。在泰国的双海洋系统中观察到 Donax 物种的三种分布模式。

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来源期刊

Zoological Studies 生物-动物学

CiteScore

2.80

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Zoological Studies publishes original research papers in five major fields: Animal Behavior, Comparative Physiology, Evolution, Ecology, and Systematics and Biogeography. Manuscripts are welcome from around the world and must be written in English. When the manuscript concerns the use of animals or specimens in research, a statement must be included to the effect that the author(s) has adhered to the legal requirements of the country in which the work was carried out or to any institutional guidelines.