Journal article
The Complete Mitochondrial Genome and Phylogenetic Position of the Pacific Spiny Dogfish Squalus suckleyi (Squaliformes: Squalidae)
Ecology and evolution, Vol.16(8), pp.e74113-n/a
08/2026
PMID: 42529045
Abstract
The Pacific spiny dogfish, Squalus suckleyi (Girard, 1854), is a benthopelagic small shark widely distributed across the North Pacific, caught in both commercial and bycatch fisheries throughout its range. Here we report the first mitochondrial genome of Squalus suckleyi , assembled from PacBio high‐fidelity sequencing reads. The mitogenome (GenBank accession PZ086324) is 16,738 base pairs long and comprises the typical set of 37 mitochondrial genes found in vertebrates, including 13 protein‐coding genes, 22 transfer RNA genes, two ribosomal RNA genes and a control region. The overall nucleotide composition is AT‐biased (A + T content of 61.17%), consistent with other elasmobranchs. Maximum‐likelihood phylogenetic analysis based on the 13 protein‐coding genes recovered S. suckleyi as sister to S. acanthias with maximum ultrafast bootstrap support. Pairwise non‐synonymous to synonymous substitution rate ratios between S. suckleyi and S. acanthias ranged from 0 to 0.051 across all protein‐coding genes, suggesting strong purifying selection on mitochondrial function in this recently diverged species pair. This mitogenome provides a high‐quality genomic resource to support phylogeographic, evolutionary and management‐oriented studies of Squalus suckleyi and more broadly the Squaliformes. The Pacific spiny dogfish ( Squalus suckleyi ) is a North Pacific shark of conservation consern that until now lacked a complete mitochondrial genome. We report its first mitogenome (16,738 bp; 37 genes), assembled from PacBio HiFi reads and recover it as sister to S. acanthias with strong purifying selection across all protein‐coding genes, providing a useful genomic resource for future evolutionary, comparative and phylogeographic studies in Squalus and across Squaliformes.
Metrics
1 Record Views
Details
- Title
- The Complete Mitochondrial Genome and Phylogenetic Position of the Pacific Spiny Dogfish Squalus suckleyi (Squaliformes: Squalidae)
- Creators
- Laure Inçaby - Nord UniversitySabrina Haney - Washington State UniversityMichael Phelps - Washington State UniversityCatherine S. Jones - University of AberdeenMarcela Uliano-Silva - Nord UniversityGalice Hoarau - Nord UniversityLeslie R. Noble - Nord University
- Publication Details
- Ecology and evolution, Vol.16(8), pp.e74113-n/a
- Publisher
- Wiley
- Identifiers
- 99901398982601842
- Language
- English
- Resource Type
- Journal article