王辉,强俊,李瑞伟

• 1:广东海洋大学水产学院
• 2:广东茂名茂南三高罗非鱼良种基地

摘要(Abstract)：

利用实验生态学的方法研究不同温度(15、20、25、30和35℃)、盐度(0、5、10、15和20)、pH(5、6、7、8和9)和体质量(1.93±0.08、3.43±0.12、7.95±0.34、11.74±0.41和15.84±0.61 g)对尼罗罗非鱼幼鱼窒息点的影响,并建立温度、盐度、pH、体质量与罗非鱼窒息点间的回归方程。结果表明:温度t、盐度S、pH和体质量m对尼罗罗非鱼幼鱼窒息点有显著影响(P<0.05)。当温度、盐度、pH和体质量分别为25.28℃、3.6、8.06、6.3 g时,窒息点(DAP)最低,回归方程为DAP=0.000 9 t 2-0.045 5 t+0.726 6(R2=0.952 1),DAP=-0.000 1 S 3+0.004 2 S 2-0.023 9 S+0.111 9(R2=0.922 8),DAP=0.009 3 pH2-0.149 9 pH+0.7174(R2=0.976 8);DAP=-0.000 3 m3+0.011 1 m2-0.104 3 m+0.362 8(R2=0.948 4)。在溶氧不足情况下,温度25.28℃、盐度3.6、pH 8.06的环境条件有助于提高幼鱼耐低氧能力。

关键词(KeyWords)： 尼罗罗非鱼;幼鱼;窒息点;温度;盐度;pH;体质量

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划(2008BADB9B01-3);; 广东省教育部产学研结合项目(2008B090500088)

作者(Author): 王辉,强俊,李瑞伟

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