Abstract
Correct phenotypical identification of and discrimination between Boreogadus saida and Arctogadus glacialis is challenging, especially for larvae and young fish. We propose the use of a single microsatellite genetic marker, Gmo8, to distinguish between the two gadoid fish species. Amplified allele frequencies differed considerably, with B. saida (n = 97) being almost exclusively monomorphic at this locus, whereas A. glacialis (n = 136) is highly polymorphic. There was a clear separation between the amplified allele ranges for the two species. The species specific properties of Gmo8 enables the use of this marker to distinguish between B. saida and A. glacialis.
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Acknowledgements
The authors would like to thank the crew of RV “Jan Mayen” for their assistance, Kim Præbel for help on sampling of material and two anonymous reviewers for constructive critiques on an early draft. The analyzed material was collected during the TUNU-MAFIG expeditions.
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Madsen, M.L., Fevolden, SE. & Christiansen, J.S. A simple molecular approach to distinguish between two Arctic gadoid fishes Arctogadus glacialis (Peters, 1874) and Boreogadus saida (Lepechin, 1774). Polar Biol 32, 937–939 (2009). https://doi.org/10.1007/s00300-009-0616-3
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DOI: https://doi.org/10.1007/s00300-009-0616-3