| 摘要: |
| 通过急性毒性实验,研究碳酸盐碱度对淡化凡纳滨对虾 (Litopenaeus vannamei)幼虾的毒性效应及其在碳酸盐型盐碱水域的生存能力。结果表明,在pH为7.12～8.14时,碳酸盐碱度对幼虾的24 h半有效浓度(EC50)为2.73 mmol/L。在pH为8.11～8.72时,碳酸盐碱度对幼虾的24,48和96 h的半致死浓度(LC50)分别为12.40,11.24和10.49 mmol/L,安全浓度(CS)为2.77 mmol/L。幼虾在碳酸盐型盐碱水域存活时间近9 h。高碱度K+的质量浓度低、Na+与K+的质量浓度比较高是碳酸盐型盐碱水域养殖凡纳滨对虾的主要障碍。 |
| 关键词: 凡纳滨对虾(Litopenaeus vannamei) 盐碱水域 碳酸盐 |
| DOI： |
| 分类号: |
| 基金项目:吉林省科技发展计划资助项目(20020227-2) |
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| Adaptability of Litopenaeus vannamei to carbonate saline-alka-line waters in northeast China |
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| Abstract: |
| Acute toxicity of the carbonate-alkalinity to desalination Litopenaeus vannamei juvenile was determined in wild by one-way toxicity test, and the live ability of desalination L. vannamei juvenile in natural carbonate saline-alkaline waters in northeast China was surveyed. The results showed that the 24 h EC50 of the carbonate-alkalinity was 2.73 mmol/L at pH of 7.12～8.14. The 24,48 and 96 hours LC50 of the carbonate-alkalinity to make a desalination L. vannamei juvenile were 12.40,11.24 and 10.49 mmol/L at pH of 8.11～8.72 respectively, and the safe concentration was 2.77 mmol/L. Desalination L. vannamei juvenile can live only about 9 hours in natural carbonate saline-alkaline waters. High carbonate-alkalinity and c(Na+)/ c(K+), and low concentration of c(K+) were all the insurmountable obstacles at the moment. |
| Key words: Litopenaeus vannamei saline-alkaline waters carbonate |
