半滑舌鳎幼鱼耗氧率和窒息点的研究  

Study on the oxygen consumption rate and asphyxiation point of Cynoglossus semilaevis Günther larvae

作　　者：关健[1] 柳学周[1] 马学坤[1] 孙中之[1] 马甡[2] 

机构地区：[1]农业部海洋渔业资源可持续利用重点开放实验室中国水产科学研究院黄海水产研究所,青岛266071 [2]中国海洋大学生命科学与技术学部,青岛266003

出　　处：《海洋水产研究》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

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.

关 键 词：半滑舌鳎 幼鱼 耗氧率 窒息点 

分 类 号：S965.3[农业科学—水产养殖]