Adaptability of Litopenaeus vannamei to carbonate saline-alkaline waters in northeast China
凡纳滨对虾对东北碳酸盐型盐碱水域的适应能力

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.