Comprehensive molecular phylogeny and diversification of snappers (Actinopterygii: Perciformes: Lutjanidae) from the Odisha coast, Bay of Bengal, India: taxonomy and distribution

IF 1.9 3区 生物学 Q3 EVOLUTIONARY BIOLOGY
Bibarani Tripathy, Surya N. Swain, Usha R. Acharya
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引用次数: 0

Abstract

The family Lutjanidae, commonly called “Snappers,” is a large, commercially important, and highly diverse clade of bony fishes with 17 genera and 113 species of order Perciformes. They primarily inhabit the shallow coastal waters of tropical oceans, including rocky and coral reefs, and are characterized by their colorful body patterns, which place them in the aquarium trade category. The diversity of snapper species in the Bay of Bengal is profoundly influenced mainly due to overfishing for high commercial trade. The phylogenetic relationship among snapper species is poorly understood, especially from the Bay of Bengal, and remains a topic of intense interest with conflicting morphological topologies and predominantly molecular data. In this study, we integrate two mitochondrial markers (COI and 16S rRNA) and morphological characteristics to explore the phylogenetic relationships, species diversification, and biogeographical history of the family Lutjanidae at the generic level. We collected 12 species among two genera: Lutjanus Bloch, 1790 and Pinjalo Bleeker, 1873 from the Odisha coast, Bay of Bengal, India. Phylogenetic analyses by both neighbor-joining (NJ) and maximum likelihood (ML) produce high congruence trees defining well-supported clades. In addition to phylogenetic analyses, the divergence time was based on RelTime-ML and Bayesian phylogeography approaches. Our results suggest that the studied snapper species were diversified from the common ancestor in the middle Paleogene period (42 Mya). Biogeographical reconstruction resulted in successive dispersal events from an ancestral range from the Indo-Pacific region to the eastern Pacific and to the Bay of Bengal. We believe that our results critically explain the origin of snapper species, their diversification, and their local distribution.

Abstract Image

印度孟加拉湾奥迪沙海岸笛鲷(翼手目:鲈形目:笛鲷科)的综合分子系统发育和多样化:分类和分布
笛鲷科,俗称 "笛鲷",是一个大型、具有重要商业价值和高度多样性的硬骨鱼类支系,隶属于鲈形目,共有 17 属 113 种。它们主要栖息于热带海洋的浅海水域,包括岩礁和珊瑚礁,其特点是体色艳丽,因此被列入水族贸易类别。孟加拉湾笛鲷物种的多样性受到严重影响,主要原因是过度捕捞导致商业贸易旺盛。人们对笛鲷物种之间的系统发育关系知之甚少,尤其是孟加拉湾的笛鲷物种之间的系统发育关系,由于形态拓扑结构和主要的分子数据相互矛盾,这种关系仍然是一个备受关注的话题。在本研究中,我们整合了两个线粒体标记(COI 和 16S rRNA)和形态特征,在属的水平上探讨了笛鲷科的系统发育关系、物种多样化和生物地理历史。我们收集了两个属中的 12 个物种:Lutjanus Bloch, 1790 和 Pinjalo Bleeker, 1873。通过邻接法(NJ)和最大似然法(ML)进行的系统发生分析产生了高度一致的树,定义了支持良好的支系。除系统发生分析外,我们还利用 RelTime-ML 和贝叶斯系统地理学方法分析了分歧时间。我们的研究结果表明,所研究的鲷鱼物种是在古近纪中期(42 Mya)从共同祖先分化而来的。生物地理重建导致了从印度洋-太平洋地区到东太平洋和孟加拉湾的祖先扩散事件。我们相信,我们的研究结果可以很好地解释鲷鱼物种的起源、多样化及其在当地的分布。
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来源期刊
Organisms Diversity & Evolution
Organisms Diversity & Evolution 生物-进化生物学
CiteScore
3.60
自引率
0.00%
发文量
56
审稿时长
>12 weeks
期刊介绍: Organisms Diversity & Evolution (published by the Gesellschaft fuer Biologische Systematik, GfBS) is devoted to furthering our understanding of all aspects of organismal diversity and evolution. Papers addressing evolutionary aspects of the systematics, phylogenetics, morphology and development, taxonomy and biogeography of any group of eukaryotes, recent or fossil, are welcome. Priority is given to papers with a strong evolutionary and/or phylogenetic focus. Manuscripts presenting important methods or tools or addressing key theoretical, methodological, and philosophical principles related to the study of organismal diversity are also welcome. Species descriptions are welcome as parts of a manuscript of broader interest that strive to integrate such taxonomic information with the other areas of interest mentioned above.
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