| 管角螺Hemifusus tuba(Gmelin)稚贝在不同盐度下的生长和存活研究 |
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| 引用本文： | 罗杰,曹伏君,刘楚吾,陈加辉.管角螺Hemifusus tuba(Gmelin)稚贝在不同盐度下的生长和存活研究[J].热带海洋学报,2011(6). |
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| 作者姓名： | 罗杰 曹伏君 刘楚吾 陈加辉 |
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| 作者单位： | 广东海洋大学水产学院南海水产经济动物增养殖广东普通高校重点实验室; |
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| 基金项目： | 广东省科技攻关项目(2005B33201011) |
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| 摘 要： | 在水温28.6—29.5℃、pH8.2条件下,研究了管角螺Hemifusus tuba稚贝(壳高19.5±1.23)mm、体重(661.4±48.6)mg]在不同盐度下的生长和存活,并用二点法计算出最适宜存活和生长的盐度范围。结果表明,管角螺稚贝适宜存活盐度和最适存活盐度分别为17.7‰—40.8‰和25.1‰—35.9‰,适宜生长盐度和最适生长盐度分别为17.5‰—39.9‰和27.8‰—33.2‰。在最适生长盐度范围内,稚贝壳高日平均增长率为0.358—0.397mm.d 1,体重日平均增长率为44.64—49.09mg.d 1。超出上述范围,其存活率下降、生长率降低。稚贝在盐度17.0‰和41.3‰的海水中适应20d后再分别移至盐度14.0‰和45.0‰的海水中,72 h后存活率分别为84.0%和96.0%,而直接把生活在盐度为30.5‰中的稚贝放入到盐度为14.0‰和45.0‰的海水,72h后其存活率为8.0%和0,可见稚贝对盐度的适应能力与原生活海水盐度有关,经过驯化后的稚贝能够扩大对盐度的适应范围,提高对盐度的耐受力。
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| 关 键 词： | 管角螺 稚贝 盐度 生长 存活 |
Study on the growth and survival of Hemifusus tuba (Gmelin) Juvenile at different salinity |
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| LUO Jie,CAO Fu-jun,LIU Chu-wu,CHEN Jia-hui Fishery College of Guangdong Ocean University,Key Laboratory of Aquaculture in South China Sea in Aquatic Economic Animal of Guangdong Higher Education Institutes,Zhanjiang ,China.Study on the growth and survival of Hemifusus tuba (Gmelin) Juvenile at different salinity[J].Journal of Tropical Oceanography,2011(6). |
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| Authors: | LUO Jie CAO Fu-jun LIU Chu-wu CHEN Jia-hui Fishery College of Guangdong Ocean University Key Laboratory of Aquaculture in South China Sea in Aquatic Economic Animal of Guangdong Higher Education Institutes Zhanjiang China |
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| Institution: | LUO Jie,CAO Fu-jun,LIU Chu-wu,CHEN Jia-hui Fishery College of Guangdong Ocean University,Key Laboratory of Aquaculture in South China Sea in Aquatic Economic Animal of Guangdong Higher Education Institutes,Zhanjiang 524025,China |
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| Abstract: | |
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| Keywords: | Hemifusus tuba(Gmelin) juvenile salinity growth survival |
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