| 亚硝酸盐氮对方斑东风螺毒性的研究 |
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| 引用本文： | 郭增华,王秋燕.亚硝酸盐氮对方斑东风螺毒性的研究[J].海洋水产研究,2006,27(6):88-92. |
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| 作者姓名： | 郭增华 王秋燕 |
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| 作者单位： | 1. 广州番禺农校,511400
2. 湛江海洋大学,水产学院,524025 |
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| 摘 要： | 用常规的生物毒性试验方法,分别在不同盐度和pH下进行了亚硝酸盐氮对壳高为0.5cm的方斑东风螺(Babyloniaareolata)的急性毒性试验。结果表明,盐度对亚硝酸盐氮的毒性有较大的影响,其24hLC50、48hLC50、72hLC50和96hLC50,在盐度28时均显著高于盐度18和23时,(P<0.05),盐度越高亚硝酸盐氮毒性越弱。其半致死浓度在pH8.5时显著高于pH6.5和7.5时,(P<0.05),较高pH值条件下亚硝酸盐氮的毒性较弱;pH为6.5和7.5时,其半致死浓度差异不显著(P>0.05),低的pH对亚硝酸盐氮毒性的影响不明显。
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| 关 键 词： | 方斑东风螺 亚硝酸盐氮 急性毒性试验 pH 盐度 |
| 文章编号： | 1000-7075（2006）06-0088-05 |
| 收稿时间： | 2005-07-26 |
| 修稿时间： | 2005-07-262005-09-30 |
Study on the toxicity of nitrite nitrogen to Babylonia areolata |
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| GUO Zeng-hua,WANG Qiu-yan.Study on the toxicity of nitrite nitrogen to Babylonia areolata[J].Marine Fisheries Research,2006,27(6):88-92. |
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| Authors: | GUO Zeng-hua WANG Qiu-yan |
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| Institution: | 1 Agriculture Technology Academy, Panyu, Guangzhou 511400;2Fisheries College, Zhanjiang Ocean University, 524025 |
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| Abstract: | Acute toxicity test of NO_2-N with Babylonia. areolata was conducted under the conditions of different salinity and pH. The results showed that salinity produced remarkable effects on the toxicity of NO_2-N, for the 24 h LC_ 50 , 48 h LC_ 50 , 72 h LC_ 50 and 96 h LC_ 50 values for B. areolata at the salinity of 28 were all significantly higher than those at the salinity of 23 and 18(P<0.05), indicating that the higher the salinity, the lower the toxicity of NO_2-N. Similarly, the LC_ 50 values at 8.5 pH were all significantly higher than those at 7.5 and 6.5 pH, displaying that the higher the pH values, the lower the toxicity of NO_2-N. However, the LC_ 50 values at 6.5 and 7.5 pH were not significantly different(P>0.05). It seems likely that low pH has little effect on the toxicity of NO_2-N. |
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| Keywords: | Babylonia areolata Nitrite nitrogen Acute toxicity pH Salinity |
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