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<p>The family Syngnathidae includes seahorses, sea dragons, and pipefishes. We sequenced the complete mitochondrial DNA (mtDNA) genome of the belly pipefish, <i>Hippichthys heptagonus</i> Bleeker, 1849. The genome is 16,646-bp long, and includes the standard complement for bony fishes of 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and a control region, in the same order and strand distribution as other syngnathids. Maximum likelihood and Bayesian analysis of 58 complete mtDNA protein-coding sequences from 18 genera of Syngnathidae supports the inclusion of <i>H. heptagonus</i> with <i>Phoxocampus</i> in the tribe Leptonotini of the Syngnathinae, monophyly of the Nerophinae and Syngnathinae, and within the latter monophyly of the tribes Haliichthytini, Hippocampini, Leptonotini, Solegnathini, and Syngnathini. This is the first comprehensive mtDNA genome-based phylogenetic analysis of the evolutionary and systematic relationships within Syngnathidae.</p>

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Mitochondrial genome sequence of Hippichthys heptagonus Bleeker, 1849 (Syngnathiformes, Syngnathidae) and its phylogenetic placement

  • 期刊论文

  • 发表日期：

    2025年8月20日

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  • CHENG-HE SUN,
  • XIAO-DIE CHEN,
  • CHANG-HU LU

摘要

The family Syngnathidae includes seahorses, sea dragons, and pipefishes. We sequenced the complete mitochondrial DNA (mtDNA) genome of the belly pipefish, Hippichthys heptagonus Bleeker, 1849. The genome is 16,646-bp long, and includes the standard complement for bony fishes of 13 protein-coding genes, 22 tRNA genes, two rRNA genes, and a control region, in the same order and strand distribution as other syngnathids. Maximum likelihood and Bayesian analysis of 58 complete mtDNA protein-coding sequences from 18 genera of Syngnathidae supports the inclusion of H. heptagonus with Phoxocampus in the tribe Leptonotini of the Syngnathinae, monophyly of the Nerophinae and Syngnathinae, and within the latter monophyly of the tribes Haliichthytini, Hippocampini, Leptonotini, Solegnathini, and Syngnathini. This is the first comprehensive mtDNA genome-based phylogenetic analysis of the evolutionary and systematic relationships within Syngnathidae.