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Pacific cod otoliths from 13 sample series obtained from 12 localities within the Russian Far East waters (from Primorye in the Sea of Japan to Navarin Cape in the western Bering Sea) and 1 in the northeastern Pacific (waters of British Columbia, Canada) were investigated. Statistical analysis by a number of indices allowed to distinguish geographically isolated Pacific cod groupings. This method might be recommended for population structure researches along with morphological studies, tagging, ecological researches and DNA analysis.
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Orlov et al. (2013) studied this question.
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