Present address: Megan R. McCusker, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, Canada M1C 1A4.
Historical influences dominate the population genetic structure of a sedentary marine fish, Atlantic wolffish (Anarhichas lupus), across the North Atlantic Ocean
Article first published online: 3 SEP 2010
© 2010 Blackwell Publishing Ltd
Volume 19, Issue 19, pages 4228–4241, October 2010
How to Cite
McCUSKER, M. R. and BENTZEN, P. (2010), Historical influences dominate the population genetic structure of a sedentary marine fish, Atlantic wolffish (Anarhichas lupus), across the North Atlantic Ocean. Molecular Ecology, 19: 4228–4241. doi: 10.1111/j.1365-294X.2010.04806.x
- Issue published online: 24 SEP 2010
- Article first published online: 3 SEP 2010
- Received 8 October 2009; revision received 14 July 2010; accepted 19 July 2010
- amplified fragment length polymorphism;
- isolation by distance;
- marine fish;
Genetic variation was assessed in Atlantic wolffish, Anarhichas lupus, across the North Atlantic Ocean using microsatellite and amplified fragment length polymorphism (AFLP) markers. Despite unusual life history attributes such as large benthic eggs, large larvae, a limited pelagic stage and relatively sedentary adults, which suggest potential for strong population structure, range-wide FST values were comparable to other marine fishes (≤0.035). Nevertheless, both significant genetic differentiation among regions and isolation by distance were observed, suggesting limited dispersal in this species. AFLP loci, evaluated on a subset of samples, revealed slightly higher FST values, but similar patterns of differentiation and isolation-by-distance estimates, compared to microsatellites. The genetic structure of Atlantic wolffish has likely been shaped by its post-glacial history of recolonization, North Atlantic current patterns and continuity of habitat on continental shelves.