珍珠龙胆石斑鱼对水温、盐度和低溶解氧耐受能力的初步研究  

Tolerance study on the water temperature,salinity and dissolvedoxygen changes of pearl gentian grouper( Epinephelusfuscoguttatus ♀× E.lanceolatus ♂ )

作　　者：林国文 LIN Guowen(Mindong Fishery Research Institute of Fujian Province,Ningde 352100,China)

机构地区：[1]福建省闽东水产研究所,福建宁德352100

出　　处：《渔业研究》2020年第5期481-485,共5页Journal of Fisheries Research

基　　金：福建省科技厅公益类科研院所专项(2015R1037-3).

摘　　要：为研究珍珠龙胆石斑鱼对海水温度、盐度、溶解氧等主要环境因子的耐受能力,选择体质量121.4~277.5 g、体长174~229 mm、健康活泼的珍珠龙胆石斑鱼,采用渐变式方法进行试验。结果表明:珍珠龙胆石斑鱼对水温、盐度和溶解氧耐受范围较广,适宜水温为20.0~35.0℃,临界下限水温为10.0℃,临界上限水温为39.0℃;适宜盐度为11.0~40.0,临界下限盐度为3.0,上限盐度45.0;耐受低氧:窒息临界点为0.70 mg/L,DO 50为0.67 mg/L,DO 100为0.60 mg/L。The study was conducted to study the tolerance ability to the temperature,salinity,dissolved oxygen and other environmental factors changes of pearl pentian grouper(Epinephelus fuscoguttatus♀×E.lanceolatus♂).Healthy pearl gentian groupers were selected to conduct the gradient experiment.The average body weight of pearl gentian grouper was 121.4~277.5 g and the average body length was 174~229 mm.The results showed that the tolerance ability of pearl gentian grouper on the temperature,salinity and dissolved oxygen was widely.The optimum temperature range was 20.0~35.0℃,the lower critical temperature was 10.0℃,and the upper critical temperature was 39.0℃;the optimum salinity was 11.0~40.0,and the lower critical salinity was 3.0;the critical suffocation point was 0.70 mg/L,the DO 50 was 0.67mg/L,and DO 100 was 0.60 mg/L.

关 键 词：珍珠龙胆石斑鱼 水温 盐度 低溶解氧 耐受能力 

分 类 号：S965.334[农业科学—水产养殖]