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Differentiation of western and eastern Baltic Sea cod stocks ( Gadus morhua ) by means of stable isotope ratios in muscles and otoliths
Author(s) -
Deutsch B.,
Berth U.
Publication year - 2006
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2006.00781.x
Subject(s) - gadus , otolith , baltic sea , biology , fishery , estuary , δ18o , oceanography , δ15n , stable isotope ratio , δ13c , isotope , fish <actinopterygii> , geology , physics , quantum mechanics
Summary 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 δ 15 N and δ 13 C values of the dorsal muscle, as well as in the δ 18 O 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.