罗杰, 陈加辉, 刘楚吾. 管角螺稚贝对亚硝酸盐耐受力研究[J]. 南方水产科学, 2011, 7(2): 42-48. DOI: 10.3969/j.issn.2095-0780.2011.02.007
引用本文: 罗杰, 陈加辉, 刘楚吾. 管角螺稚贝对亚硝酸盐耐受力研究[J]. 南方水产科学, 2011, 7(2): 42-48. DOI: 10.3969/j.issn.2095-0780.2011.02.007
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LUO Jie, CHEN Jiahui, LIU Chuwu. Study on the tolerance of Hemifusus tuba juvenile to nitrite[J]. South China Fisheries Science, 2011, 7(2): 42-48. DOI: 10.3969/j.issn.2095-0780.2011.02.007
Citation: LUO Jie, CHEN Jiahui, LIU Chuwu. Study on the tolerance of Hemifusus tuba juvenile to nitrite[J]. South China Fisheries Science, 2011, 7(2): 42-48. DOI: 10.3969/j.issn.2095-0780.2011.02.007
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管角螺稚贝对亚硝酸盐耐受力研究

Study on the tolerance of Hemifusus tuba juvenile to nitrite

    摘要
  • 摘要: 水温29 ℃时研究了管角螺（Hemifusus tuba）稚贝壳高（1.220.14）mm在不同盐度和pH下对亚硝酸盐毒性的耐受力。试验结果表明，pH和盐度越低，亚硝酸盐对稚贝的毒害作用越大。水体pH为6.7、7.3、8.0和8.8时，亚硝酸盐对管角螺稚贝的96 h半数致死质量浓度（LC50）（95%可信区间）分别为188 mgL-1（167~213 mgL-1）、213 mgL-1（195~231 mgL-1）、254 mgL-1（231~271 mgL-1）和304 mgL-1（284~321 mgL-1），相对应的安全质量浓度（SC）为18.8、21.3、25.4和30.4 mgL-1，pH 8.8时亚硝酸盐对稚贝的SC是pH 6.7时的1.6倍；盐度在16、19、23和28时，亚硝酸盐对管角螺稚贝的96 h LC50（95%可信区间）分别为151 mgL-1（138~178 mgL-1）、171 mgL-1（159~192 mgL-1）、265 mgL-1（246~282 mgL-1）和296 mgL-1（278~323 mgL-1），相对应的SC分别为15.1 mgL-1、17.1 mgL-1、26.5 mgL-1和29.6 mgL-1，盐度28时亚硝酸盐对稚贝的SC是盐度16时的近2倍。

     

    Abstract: Under the water temperature of 29 ℃, we studied the tolerance of Hemifusus tuba juvenile at shell height (11.30.11) mm to nitrite at different pH and salinity. The result shows that the toxicity of nitrite to H.tuba juveniles is greater when pH and salinity are lower. When pH is 6.7, 7.3, 8.0 and 8.8, the 96 h LC50 of nitrite with 95% confidence limit to the juveniles is 188 mgL-1(167~213 mgL-1), 213 mgL-1(195~231 mgL-1), 254 mgL-1(231~271 mgL-1) and 304 mgL-1 (284~321 mgL-1); correspondingly, the safe concentration (SC) of nitrite to the juveniles is 18.8 mgL-1, 21.3 mgL-1, 25.4 mgL-1 and 30.4 mgL-1, respectively; SC at pH 8.8 is 1.6 times that at pH 6.7. The 96 h LC50 with 95% confidence limit of nitrite to juveniles is 151 mgL-1(138~178 mgL-1), 171 mgL-1(159~192 mgL-1), 265 mgL-1 (246～282 mgL-1) and 296 mg.L-1 (278~323 mg.L-1) when salinity is 16, 19, 23 and 28; correspondingly, the SC is 15.1 mgL-1, 17.1 mgL-1, 26.5 mgL-1 and 29.6 mg.L-1, respectively; SC at the salinity of 28 is nearly 2 times that of 16.

     

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