{"title":"The mitochondrial genome of an invasive hydromedusa: <i>Cladonema digitatum</i> Fang et al., 2022 (Cnidaria: Hydrozoa).","authors":"Yuxiang Huang, Jiaxin Tian, Shuo Zheng, Ping Zheng, Jianming Chen, Konglin Zhou, Weicheng Wang","doi":"10.1080/23802359.2025.2554415","DOIUrl":null,"url":null,"abstract":"<p><p>This study presents the first mitochondrial genome (16,342 bp) of the invasive species <i>Cladonema digitatum</i> Fang et al., 2022, revealing a conserved Capitata-like gene arrangement, comprising 13 protein-coding genes, two rRNA genes, and two tRNA genes, along with a duplicated pseudo-<i>cox1</i> fragment. Phylogenetic analysis robustly supported <i>C. digitatum</i> and <i>Cladonema multiramosum</i> as reciprocally monophyletic mitogenome lineages, forming a robust clade sister to <i>Cladonema pacificum</i>. This topology supports the morphological dichotomy between the <i>Cladonema radiatum</i>-like lineage (filiform tentacles, gastric pouches) and <i>C. pacificum</i>-like species. These findings contribute a critical genomic resource for advancing the understanding of medusozoan phylogeny.</p>","PeriodicalId":18647,"journal":{"name":"Mitochondrial DNA. Part B, Resources","volume":"10 10","pages":"932-936"},"PeriodicalIF":0.7000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12418794/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mitochondrial DNA. Part B, Resources","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/23802359.2025.2554415","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q4","JCRName":"GENETICS & HEREDITY","Score":null,"Total":0}
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Abstract
This study presents the first mitochondrial genome (16,342 bp) of the invasive species Cladonema digitatum Fang et al., 2022, revealing a conserved Capitata-like gene arrangement, comprising 13 protein-coding genes, two rRNA genes, and two tRNA genes, along with a duplicated pseudo-cox1 fragment. Phylogenetic analysis robustly supported C. digitatum and Cladonema multiramosum as reciprocally monophyletic mitogenome lineages, forming a robust clade sister to Cladonema pacificum. This topology supports the morphological dichotomy between the Cladonema radiatum-like lineage (filiform tentacles, gastric pouches) and C. pacificum-like species. These findings contribute a critical genomic resource for advancing the understanding of medusozoan phylogeny.
期刊介绍：
This open access journal publishes high-quality and concise research articles reporting the sequence of full mitochondrial genomes, and short communications focusing on the physical, chemical, and biochemical aspects of mtDNA and proteins involved in mtDNA metabolism and interactions.
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