大麻哈鱼幼鱼对温度、盐度、pH及溶解氧耐受性的研究  

Studies on temperature,salinity,pH and dissolved oxygen tolerance of Oncorhynchus keta smolts

作　　者：孙述好 黄紫薇 胡男 李应东 SUN Shuhao;HUANG Ziwei;HU Nan;LI Yingdong(Dandong Fisheries Development Service Center,Dandong 118017,Liaoning China;College of Animal Science and Medicine,Shenyang Agricultural University,Shenyang 110866,Liaoning China)

机构地区：[1]丹东市渔业发展服务中心,辽宁丹东118017 [2]沈阳农业大学动物科学与医学学院,辽宁沈阳110866

出　　处：《黑龙江水产》2024年第2期140-143,共4页Northern Chinese Fisheries

摘　　要：该研究以大麻哈鱼(Oncorhynchus keta)为受试对象,分别从温度、盐度、pH值以及溶解氧耐受性方面对大麻哈鱼幼鱼的生存状况展开研究。大麻哈鱼幼鱼由丹东市水产研究所提供。暂养5 d后挑选体长(8.84±0.50)cm,体重(5.2±0.50)g的体质健康、外形匀称的大麻哈鱼幼鱼用于试验。结果显示,大麻哈鱼幼鱼耐受高温的临界值为21℃,同时,温度越高,大麻哈鱼幼鱼耗氧量增加,低氧耐受性减弱;对盐度骤变的接受范围在0‰~35‰,盐度渐变可以达到40‰;pH值的骤变和渐变对大麻哈鱼的影响差异不显著(P>0.05),适应范围4.5~10。研究结果可为大麻哈鱼幼鱼养殖及运输提供参考。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 salmon.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.

关 键 词：温度 盐度 PH值 溶解氧 耐受性 大麻哈鱼(Oncorhynchus keta) 

分 类 号：S965.229[农业科学—水产养殖]