Gene characterization and phylogenetic analysis of four mitochondrial genomes in Caenogastropoda

IF 1.4 3区 地球科学 Q3 OCEANOGRAPHY Acta Oceanologica Sinica Pub Date : 2024-04-27 DOI:10.1007/s13131-023-2258-7
Jiangyong Qu, Wanqi Yang, Xindong Teng, Li Xu, Dachuan Zhang, Zhikai Xing, Shuang Wang, Xiumei Liu, Lijun Wang, Xumin Wang
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Abstract

Caenogastropoda is a highly diverse group, containing ∼60% of all existing gastropods. Species in this subclass predominantly inhabit marine environments and have a high ecological and economic value. Owing to the increase in relevant phylogenetic studies, our understanding of between species relatedness in Caenogastropoda has improved. However, the biodiversity, taxonomic status, and phylogenetic relationships of this group remain unclear. In the present study, we performed next-generation sequencing of four complete mitochondrial genomes from three families (Buccinidae, Columbellidae, and Cypraeidae) and the four mitogenomes were classical circular structures, with a length of 16 177 bp in Volutharpa ampullacea, 16 244 bp in Mitrella albuginosa, 16 926 bp in Mauritia arabica asiatica and 15 422 bp in Erronea errones. Base composition analysis indicated that whole sequences were biased toward A and T. Then compared them with 171 complete mitochondrial genomes of Caenogastropoda. The phylogenetic relationship of Caenogastropoda derived from Maximum Likelihood (ML) and Bayesian Inference (BI) trees constructed based on CDS sequences was consistent with the results of traditional morphological analysis, with all three families showing close relationships. This study supported Caenogastropoda at the molecular level as a separate clade of Mollusca. According to our divergence time estimations, Caenogastropoda was formed during the middle Triassic period (∼247.2–237 Ma). Our novel mitochondrial genomes provide evidence for the speciation of Caenogastropoda in addition to elucidating the mitochondrial genomic evolution of this subclass.

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Caenogastropoda 四种线粒体基因组的基因特征和系统发育分析
腹足纲(Caenogastropoda)是一个高度多样化的类群,占现有腹足纲动物总数的 60%。该亚纲的物种主要栖息于海洋环境中,具有很高的生态和经济价值。由于相关系统发育研究的增加,我们对腹足纲物种间亲缘关系的认识也有所提高。然而,该类群的生物多样性、分类地位和系统发育关系仍不清楚。在本研究中,我们对三个科(Buccinidae、Columbellidae和Cypraeidae)的四个完整线粒体基因组进行了新一代测序,四个线粒体基因组均为经典的环状结构,其长度分别为:Volutharpa ampullacea 16 177 bp、Mitrella albuginosa 16 244 bp、Mauritia arabica asiatica 16 926 bp和Erronea errones 15 422 bp。碱基组成分析表明,整个序列偏向于 A 和 T。根据CDS序列构建的最大似然树(ML)和贝叶斯推断树(BI)得出的腹足纲系统发生关系与传统形态学分析的结果一致,三科之间的关系密切。这项研究支持 Caenogastropoda 在分子水平上作为软体动物的一个独立支系。根据我们的分化时间推测,腹足纲形成于三叠纪中期(∼247.2-237 Ma)。我们的新线粒体基因组不仅为 Caenogastropoda 的物种分化提供了证据,还阐明了该亚纲线粒体基因组的演化过程。
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来源期刊
Acta Oceanologica Sinica
Acta Oceanologica Sinica 地学-海洋学
CiteScore
2.50
自引率
7.10%
发文量
3884
审稿时长
9 months
期刊介绍: Founded in 1982, Acta Oceanologica Sinica is the official bi-monthly journal of the Chinese Society of Oceanography. It seeks to provide a forum for research papers in the field of oceanography from all over the world. In working to advance scholarly communication it has made the fast publication of high-quality research papers within this field its primary goal. The journal encourages submissions from all branches of oceanography, including marine physics, marine chemistry, marine geology, marine biology, marine hydrology, marine meteorology, ocean engineering, marine remote sensing and marine environment sciences. It publishes original research papers, review articles as well as research notes covering the whole spectrum of oceanography. Special issues emanating from related conferences and meetings are also considered. All papers are subject to peer review and are published online at SpringerLink.
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