Differentiation of western and eastern Baltic Sea cod stocks (Gadus morhua) by means of stable isotope ratios in muscles and otoliths |
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| Authors: | B Deutsch U Berth |
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| Institution: | Baltic Sea Research Institute, Rostock;;Federal Research Centre for Fishery, Institute for Baltic Sea Fishery, Rostock, Germany |
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| Abstract: | Stable isotope analysis of Baltic Sea cod from the Bornholm Sea (ICES‐SD 25) and western Baltic (Belt Sea, ICES‐SD 22) revealed significant differences in the δ15N and δ13C values of the dorsal muscle, as well as in the δ18O values of otoliths. The method pledges to become especially appropriate to the Baltic due to the high variability in oxygen isotope ratios associated with its estuarine nature. |
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