摘要
采用Winkler法对75d(0.2～0.3g)和35d(0.02～0.03g)的半滑舌鳎幼鱼进行了在不同温度(17、20、23℃)、不同盐度(20、25、30、35)下的耗氧率和窒息点测定。结果表明,75d组的相对耗氧率低于35d组;在同一体重组,盐度一定时,耗氧率取决于温度,即温度增高,耗氧率增大。而温度一定时,所测4个试验组中,盐度25时耗氧率最低,盐度20、30稍高,盐度35最高。75d组的窒息点高于35d组,高温度组窒息点较高,盐度25和30组的窒息点高于20和35组。
The effects of salinity（20,25,30,35）, temperature（17,20,23 ℃） and body weight on oxygen consumption rate of Cynoglossus semilaevis Gunther juvenils were studied by Winkler＇s method. The fish were divided into two groups： 35-days-old with body weight ranged from 0.02 to 0.03 g and 75-days-old with body weigh range from 0. 2 to 0.3 g. Oxygen consumption rate of 35-days-old juveniles was definitely higher than that of 75-days-old juveniles while asphyxiation point was on the contrary. Both oxygen consumption rate and asphyxiation point were higher at a higher temperature. Results showed that oxygen consumption rate at different salinities was significantly different （P〈0. 01） . Oxygen consumption rate was lowest at the salinity 25, but higher at the salinity 20 and 30, highest at the salinity 35 in both groups. Asphyxiation point was higher at salinity 25 and 30 than 20 and 35.
出处
《海洋水产研究》
CSCD
北大核心
2006年第2期80-86,共7页
Marine Fisheries Research
基金
国家863高技术研究发展计划项目(2002AA603011和2004AA603320)资助
关键词
半滑舌鳎
幼鱼
耗氧率
窒息点
Cynoglossus semilaevis Günther Juveniles Oxygen consumption rate Asphyxiation point
