Heilongjiang River Fisheries Research Institute;
Chinese Academy of Fishery Sciences;
Harbin 150070;
China;
Scientific Observing and Experimental Station of Fishery Resources and Environment in Heilongjiang River Basin;
Ministry of Agriculture and Rural Affairs;
Harbin 150070;
China;
Key Laboratory of Fishery Eco-environment Assessment and Resource Conservation in Middle and Lower Reaches of the Yangtze River;
Freshwater Fisheries Research Center;
Chinese Academy of Fishery Sciences;
Wuxi 214081;
China;
chum salmon(Oncorhynchus keta); otolith; strontium(Sr)marking; enhancement release;