Size and MEP-2* variation in juvenile Atlantic salmon (Salmo salar) in the River North Esk, Scotland
FRS Marine Laboratory, PO Box 101, Aberdeen AB11 9DB, UK
2 The Game Conservancy Trust, Fordingbridge, Hampshire SP6 1EF, UK
Accepted: 20 May 1999
The relationship of size to MEP-2* genotype was investigated in 0+ juvenile Atlantic salmon (Salmo salar) in the River North Esk, Scotland. Significant temperature-associated MEP-2* heterogeneity was observed among tributaries and, in the two tributaries studied, size and MEP-2* genotype were significantly associated. No size association, or heterogeneity among tributaries, was found for the other allozyme polymorphisms screened. The results suggest that the association between size and MEP-2* variation, noted by others, is likely to be widespread in wild populations, and potentially linked to habitat temperature.
Key words: Atlantic salmon / Salmo salar / malic enzyme / MEP-2* genotype / growth
© Elsevier, IRD, Inra, Ifremer, Cemagref, CNRS, 1999