高温胁迫对不同规格褐牙鲆生长性能的影响  

Effects of high temperature stress and body size on growth performance of olive flounder Paralichthys olivaceus

作　　者：程丽娜[1] 徐冬冬[2] 李三磊[1] 耿智[1] 楼宝[2] 毛国民[2] 詹炜[2] 

机构地区：[1]浙江海洋学院海洋科学学院,浙江舟山316004 [2]浙江省海洋水产研究所浙江省海水增养殖重点实验室,浙江舟山316100

出　　处：《上海海洋大学学报》2011年第3期368-373,共6页Journal of Shanghai Ocean University

基　　金：浙江省科技计划项目(2008C12011;2009C12078和2010F20006)

摘　　要：以25℃为对照组,设置28℃、30℃、32℃为高温胁迫组,采用实验生态学方法研究高温胁迫对2种规格（实验I和实验II）的褐牙鲆幼鱼生长的影响。结果显示：（1）水温25~30℃时,褐牙鲆几乎不死亡;水温达到32℃时,褐牙鲆的成活率显著下降,2种规格鱼在32℃下的成活率无显著差别（P〈0.05）;（2）两种规格鱼的生长性能受水温影响显著,各温度处理组的特定生长率、摄食率和饵料转化率和水温的平方呈显著的负相关（One-way ANOVA,P〈0.01）;（3）相同温度条件下,实验Ⅰ的特定生长率和摄食率显著高于实验Ⅱ（P〈0.05）,饵料转化率则实验Ⅰ显著低于实验Ⅱ（P〈0.05）,表明规格大小对褐牙鲆的生长性能具有显著影响。本研究结果表明,32℃可能是褐牙鲆长期生存的上限温度,高温胁迫和规格大小显著影响褐牙鲆的生长性能。研究亮点：采用不同的温度梯度对2种规格褐牙鲆进行高温胁迫,系统比较不同温度下2种规格鱼的存活率、生长率及摄食率和食物转化率的差异,确定褐牙鲆长期生存的临界上限温度,以期为其健康养殖提供参考资料。The effects of high temperature stress and two different body sizes on growth performance of olive flounder was studied in laboratory conditions.The temperature of 25 ℃ was performed as control,and the temperature of 28 ℃,30 ℃ and 32 ℃ were as high temperature stress groups.The experiments included experiment I and experiment II.The results were as follows：（1） the survival rates of olive flounder were nearly 100% when the temperature was between 25 to 30 ℃,while the survival rates of olive flounder decreased significantly at the temperature of 32 ℃.The survival rates of two differernt body sizes of flounder have no significant differences at the temperature of 32 ℃（P0.05）.（2） Water temperature significantly affected the growth of two different sizes of fish,and a quadratic regression was fit to describe the relationship between the SGR,FR,FCE and the water temperature（One-way ANOVA,P0.01）.（3） Compared with growth performance of different sized fish at the same temperature,the SGR and FR of experiment I were remarkably higher than those of experiment II（P 0.05）,while the FCE of experiment I was significantly lower than that of experiment II（P 0.05）,which indicated that body size have a significant effect on growth performance of olive flounder.The result of present study indicated that the temperature of 32 ℃ may be the upper limit of olive flounder,and the high temperature stress and body size have a significant effect on the growth performance of olive flounder.

关 键 词：褐牙鲆 高温胁迫 存活率 生长率 饵料转化率 

分 类 号：S965.3[农业科学—水产养殖]