| 摘要: |
| 蚬属及相关类群(花蚬、仙女蚬)、红树蚬属贝类在我国分布广泛,具有一定的经济价值,但是其系统发育关系还存在很多争议,基于此,本研究通过形态特征与分子生物学数据(16S、COI、Cytb)相结合,通过大批量样品分析,尤其补充了NCBI等数据库缺乏的我国特有种-花蚬、凹线仙女蚬的分子数据,对蚬属Corbicula、花蚬(Corbicula formosana)、凹线仙女蚬(Corbicula similis)及红树蚬属Geloina的系统发育关系进行了系统评估。结果表明,红树蚬属在分子系统发育树中形成稳定且支持度较高的独立分支,与蚬属类群明显分离,表现出较远的遗传距离,形态特征也与蚬属形成明显的差异。蚬属与花蚬、凹线仙女蚬聚合为同一分支单元,具有较近的亲缘关系,形态分析也表明,蚬属与花蚬、凹线仙女蚬在壳体构型上具有较高相似性,与红树蚬属形态差异较大。与蚬总科其他属物种进一步聚类分析表明,蚬属、花蚬、凹线仙女蚬与Batissa、Villorita两个属亲缘关系较近,归入蚬科；红树蚬属与Polymesoda、Cyanocyclas两个属接近,一起归入女神蚬科。 |
| 关键词: 蚬属 花蚬 凹线仙女蚬 红树蚬属 壳体形态 分子系统发育 |
| DOI：10.11693/hyhz20260500120 |
| 分类号: |
| 基金项目:国家重点研发计划（2022YFD2401301，2023YFD2400800, 2022FY100304）; 山东省重点研发计划（ 2023CXGC010411，2025CXGC010903）; 国家自然科学基金（ 42076092, 41906083, 41776179） |
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| PHYLOGENETIC RELATIONSHIPS AMONG CORBICULA-RELATED TAXA AND GELOINA SPECIES |
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HOU Lin-yan, TANG Ze-yu, ZANG Guo-chen, WANG Hai-yan
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Department of Marine Organism Taxonomy Phylogeny,Institute of Oceanology,Chinese Academy of Sciences
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| Abstract: |
| Corbicula and its related taxa (Cyrenodonax and Cyrenobatissa), as well as species of the genus Geloina, are widely distributed in China and possess considerable economic value. However, their phylogenetic relationships remain controversial. In this study, morphological characteristics and molecular data (16S, COI, and Cytb) were combined to systematically evaluate the phylogenetic relationships among Corbicula, Cyrenodonax, Cyrenobatissa, and Geloina based on extensive sample analyses. In particular, molecular data for the endemic Chinese taxa Cyrenodonax and Cyrenobatissa depressa, which are largely absent from public databases such as NCBI, were supplemented in this study. The results showed that Geloina formed a stable and highly supported independent clade in the molecular phylogenetic trees, clearly separated from the Corbicula-related taxa and exhibiting relatively large genetic distances. Morphological characteristics also revealed distinct differences between Geloina and Corbicula. In contrast, Corbicula, Cyrenodonax, and Cyrenobatissa clustered within the same clade, indicating close phylogenetic relationships. Morphological analyses further demonstrated high similarity in shell morphology among these taxa, whereas they differed markedly from Geloina. Further clustering analyses incorporating other genera within Cyrenidae indicated that Corbicula, Cyrenodonax, Cyrenobatissa, Batissa, and Villorita shared closer phylogenetic affinities and should be classified within Cyrenidae. In contrast, Geloina clustered with Polymesoda and Cyanocyclas, supporting their placement within Cyrenoididae |
| Key words: Corbicula Corbicula formosana Corbicula similis Cyrenobatissa Geloina shell morphology molecular phylogeny |