The mitochondrial genome of an invasive hydromedusa: <i>Cladonema digitatum</i> Fang et al., 2022 (Cnidaria: Hydrozoa).

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 phyl

SUBMITTER: Huang Y 

PROVIDER: S-EPMC12418794 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature