The survival status of salmon(Oncorhynchus keta)was studied in terms of temperature,salinity,pH and dissolved oxygen tolerance.Juvenile salmon were provided by the Fisheries Research Institute of Dandong City.Healthy and symmetrical salmon(body length:(8.84±0.50)cm,body weight:(5.2±0.50)g)acclimated for 2 weeks were selected for the experiment.Results showed that critical value of salmon tolerance to high temperature was 21℃.Meanwhile,higher temperature increased oxygen consumption and decreased hypoxia tolerance of salm-on.The tolerance range of abrupt salinity change was 0-35‰,and gradual salinity change could reach 40‰.Effects of abrupt and gradual changes of pH on salmon were not significant(P＞0.05),the range of adaptation was 4.5-10.These results will provide reference for the cultivation and transportation of salmon.
维普
万方数据
