КамчатНИРО
91
yearsKamchatka Research Institute of Fisheries and Oceanography
years
Journal / Archives
УДК 597.553.2 DOI: 10.15853/2072-8212.2017.45.5-23Download the full article
To the issue of the use of asian pink salmon (Oncorhynchus gorbuscha, Walbaum) scale structure for identification in mixed marine catches
Results of analysis of Asian pink salmon scale structure are demonstrated and estimation of the possible use of the structure as a differentiation marker in identification of mixed marine catches is made.
Five regional complexes of stocks are figured out on the base of the analysis of baselines collected in 2010, each having specific formation of sclerites in the first annual zone on the scale:
- of Japan (Hokkaido);
- of Sakhalin;
- Northern Kuril populations (Paramushir);
- of West Kamchatka;
- of East Kamchatka.
A complex of simulation tests is applied and results demonstrate quite high regional resolution ability of the model suggested (93,6% averaged). Identification is made for the samples from the drift net catches collected by RMV “Kadet-701” and SRTM-K “Leonid Khodyko” in June–August of 2010, and it is demonstrated that the results illustrate general commercial conjuncture in the year of the research. Correlations between coefficients of variation of the regional boot-stripe values and the number of sclerites used (in the zone of the 1st year) were analyzed. It is demonstrated that the model is stable when the number of the sclerites used is 11–15, and that allows regional identification of Asian juvenile pink salmon in marine catches possible.