高温胁迫对皱纹盘鲍幼鲍生长和成活的影响  

Effect of high temperature stress on growth and survival of juvenile Haliotis discus hannai Ino

作　　者：贾艳丽[1,2] 王江勇[2] 刘广锋[2] 孙敬锋[1] 

机构地区：[1]天津农学院水产科学系,天津市水产生态及养殖重点实验室,天津300384 [2]中国水产科学研究院南海水产研究所,广东省渔业生态环境重点实验室,农业部南海渔业资源开发利用重点实验室,广东广州510300

出　　处：《南方水产科学》2015年第2期96-100,共5页South China Fisheries Science

基　　金：现代农业产业技术体系建设专项资金“贝类产业技术体系科学家岗位专项经费”(CARS-48);广东省渔病防治专项“无特定病原(SPF)杂色鲍苗种的循环水养殖培育”;广东省科技厅星火计划项目(2012B020420005);省部产学研结合示范基地项目(2012B090700013)

摘　　要：为研究皱纹盘鲍(Haliotis discus hannai Ino)对高温的耐受性,选取经过选育的皱纹盘鲍幼鲍进行试验。试验共分5组,每组设置3个平行,其中自然水温组A为对照组,其他4组分别为B组25℃、C组28℃、D组31℃及E组32℃。研究了皱纹盘鲍幼鲍在温度渐变条件下不同温度组的生长和死亡情况,从而分析其耐高温能力。试验进行了45 d,A^E组的死亡率分别为2.2%、11.1%、43.3%、81.1%和86.7%;壳长增长率分别分别为1.2%、0.5%、0.3%、0.1%和0.1%;壳宽增长率分别为1.2%、0.6%、0.3%、0.1%和0.1%;湿质量增长率分别为6.6%、3.3%、1.7%、1.1%和1.2%。结果表明,当温度高于其最适温度时,随着温度的升高皱纹盘鲍幼鲍的死亡率升高、生长变缓慢;并可初步判断该品系的皱纹盘鲍幼鲍可耐受30℃以上水温。To study the tolerance of juvenile Haliotis discus hannai Ino to high temperature,we designed five groups with three parallels each. The temperature of control group was set as natural temperature,and that of the other four groups were set as 25 ℃,28℃,31 ℃ and 32 ℃,respectively,so as to analyze the growth and mortality of each group. In the 45-day experiment,the mortalities of Group A - E were 2. 2%,11. 1%,43. 3%,81. 1% and 86. 7%,respectively; growth rates of shell length were 1. 2%,0. 5%,0. 3%,0. 1% and 0. 1%,respecitively; growth rates of shell width were 1. 2%,0. 6%,0. 3%,0. 1% and 0. 1%,respectively; growth rates of wet weight were 6. 6%,3. 3%,1. 7%,1. 1% and 1. 2%,respectively. The results indicate that when the temperature was higher than the optimum temperature,the mortality of juvenile abalones increased and grew slowly as the temperature increased. It is concluded that the tolerance to high temperature of juvenile H. discus hannai Ino might be above 30 ℃.

关 键 词：皱纹盘鲍 高温 死亡率 生长率 

分 类 号：S944.45[农业科学—水产养殖]