Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific

Xu, Yu; Zhan, Zifeng; Xu, Kuidong

doi:10.3390/biology10070588

Cited by 4 publications

(1 citation statement)

References 33 publications

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“…The presence of mutS in octocoral mitochondrial genomes may contribute to the slower nucleotide substitution rates and participate in gene rearrangement events during evolution ( Brockman & McFadden, 2012 ; Muthye et al, 2022 ). Species-specific conserved DNA fragments, such as mutS and cytochrome c oxidase subunit 1 ( cox1 ), are often employed for the identification of coral taxon ( Xu et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogenetic relationships based on mitochondrial genomes of novel deep-sea corals (Octocorallia: Alcyonacea): Insights into slow evolution and adaptation to extreme deep-sea environments

Wei,

Ta,

Zhang

et al. 2024

Zoological Research

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A total of 10 specimens of Alcyonacea corals were collected at depths ranging from 905 m to 1 633 m by the manned submersible Shenhai Yongshi during two cruises in the South China Sea (SCS). Based on mitochondrial genomic characteristics, morphological examination, and sclerite scanning electron microscopy, the samples were categorized into four suborders (Calcaxonia, Holaxonia, Scleraxonia, and Stolonifera), and identified as 9 possible new cold-water coral species. Assessments of GC-skew dissimilarity, phylogenetic distance, and average nucleotide identity (ANI) revealed a slow evolutionary rate for the octocoral mitochondrial sequences. The nonsynonymous ( K a) to synonymous ( K s) substitution ratio ( K a/ K s) suggested that the 14 protein-coding genes (PCGs) were under purifying selection, likely due to specific deep-sea environmental pressures. Correlation analysis of the median K a/ K s values of five gene families and environmental factors indicated that the genes encoding cytochrome b (cyt b ) and DNA mismatch repair protein ( mutS ) may be influenced by environmental factors in the context of deep-sea species formation. This study highlights the slow evolutionary pace and adaptive mechanisms of deep-sea corals.

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Section: Introductionmentioning

confidence: 99%

Molecular phylogenetic relationships based on mitochondrial genomes of novel deep-sea corals (Octocorallia: Alcyonacea): Insights into slow evolution and adaptation to extreme deep-sea environments

Wei,

Ta,

Zhang

et al. 2024

Zoological Research

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A new deep-sea species of golden gorgonian (Octocorallia: Scleralcyonacea: Chrysogorgiidae) from Antarctic waters

Baena,

Martell,

Soto-Angel

et al. 2024

Deep Sea Research Part I: Oceanographic Research Papers

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A new species of Uroptychus Henderson, 1888 (Decapoda: Anomura: Chirostylidae) from a seamount in the South China Sea

DONG,

ZHOU,

2024

Zootaxa

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A new species of the chirostylid squat lobster, Uroptychus ngae sp. nov. is described based on two specimens from the Zhongnan Seamount, north-central South China Sea. The new species can be distinguished from closely related species mainly by the shape of P2–4 propodi, and the spination of the P1 carpus and merus, the anterior branchial margin and the pterygostomial flap. The present paper is the first report of squat lobster from the seamounts in South China Sea. The present new species represents the first report of a squat lobster from the deep-sea seamounts in the South China Sea.

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Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific

Cited by 4 publications

References 33 publications

Molecular phylogenetic relationships based on mitochondrial genomes of novel deep-sea corals (Octocorallia: Alcyonacea): Insights into slow evolution and adaptation to extreme deep-sea environments

Molecular phylogenetic relationships based on mitochondrial genomes of novel deep-sea corals (Octocorallia: Alcyonacea): Insights into slow evolution and adaptation to extreme deep-sea environments

A new deep-sea species of golden gorgonian (Octocorallia: Scleralcyonacea: Chrysogorgiidae) from Antarctic waters

A new species of Uroptychus Henderson, 1888 (Decapoda: Anomura: Chirostylidae) from a seamount in the South China Sea

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