Résumé
Phylogenetic analyses of all 4 wolffish species (Atlantic, Spotted, Northern, and Bering wolffishes) and the Wolfeel were assessed with both mitochondrial (D-loop and ND1) and nuclear (amplified fragment length polymorphism) DNA to resolve relationships within the family Anarhichadidae. Species-specific mitochondrial DNA (mtDNA) mutation rates were estimated based on 2 possible dates of divergence between the Pacific and Atlantic lineages. Phylogeographic patterns within each of the 3 North Atlantic wolffishes were investigated with Markov chain Monte Carlo simulations based on mtDNA to determine whether population size changes occurred following the last glaciation and where wolffishes likely survived glaciation. All 3 species of North Atlantic wolffishes showed evidence of postglacial expansion but did not show evidence of persistence in multiple refugia in both the eastern and western Atlantic Ocean. Rather, the data supported persistence in a single refuge, with postglacial expansion into the rest of the range. Nucleotide diversity, in particular, was low in wolffishes compared with other marine fishes, possibly related to reductions in population sizes during the last glaciation.
| Langue d'origine | English |
|---|---|
| Pages (de-à) | 591-601 |
| Nombre de pages | 11 |
| Journal | Journal of Heredity |
| Volume | 101 |
| Numéro de publication | 5 |
| DOI | |
| Statut de publication | Published - 2010 |
Note bibliographique
Funding Information:Natural Sciences and Engineering Research Council of Canada Discovery grant (249682-07 to P.B.); Department of Fisheries and Oceans Canadian Biotechnology Strategy grant to P.B.; Dalhousie Graduate Student Scholarship to M.R.M.
Funding Information:
We are very grateful to the many people involved in sample collections. This includes, but is not limited to, Arran McPherson and the many Department of Fisheries and Oceans personnel who were involved in field collections, Asgeir Gunnarson for Iceland collections, Eric Verspoor for North Sea samples, Petter Fossum, Halvor Knutsen, and Inge Fossen for Barents Sea and MAR collections, and Michaela Aschan for samples taken near Svalbard. Part of this work was carried out by using the resources of the Computational Biology Service Unit from Cornell University which is partially funded by Microsoft Corporation. We acknowledge all the members of the Marine Gene Probe Lab at Dalhousie University for their help and support. Finally, we acknowledge the helpful comments of anonymous reviewers.
ASJC Scopus Subject Areas
- Biotechnology
- Molecular Biology
- Genetics
- Genetics(clinical)
ODD de l’ONU
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