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采用急性毒性实验法,研究日本沼虾(Macrobrachium nipponense)对碱度和pH的适应能力,探讨内陆盐碱水域养殖的可能性。结果表明,pH对幼虾的24、48、729、6 h半数致死值分别为10.13、9.72、9.67和9.51,安全与适应范围分别为5.26~8.67、5.10~8.84。碱度对幼虾的24 h半数有效浓度为17.96mmol/L,95%置信限14.60~22.53 mmol/L;24、48、96 h半数致死浓度分别为48.95、45.15和44.96 mmol/L,95%置信限分别为45.72~50.60、39.46~51.67及34.34~55.38 mmol/L,安全碱度11.52 mmol/L。结果表明,在pH≤9.0、碱度≤20.0 mmol/L的内陆盐碱水域,可以养殖日本沼虾。
Acute toxicity test was used to study the adaptability of Macrobrachium nipponense to alkalinity and pH, and to explore the possibility of inbreeding saline-alkali waters. The results showed that the half lifetimes of 24, 48, 729 and 6 h for pH were 10.13, 9.72, 9.67 and 9.51, respectively. The range of safety and adaptability were 5.26-8.67 and 5.10-8.84, respectively. The half effective concentration of 24 h in alkalinity of juvenile shrimp was 17.96 mmol / L, 95% confidence interval was 14.60 ~ 22.53 mmol / L, and the median lethal concentrations were 48.95, 45.15 and 44.96 mmol / L for 24, 48 and 96 h, 95% The confidence limits are 45.72 ~ 50.60, 39.46 ~ 51.67 and 34.34 ~ 55.38 mmol / L respectively, and the safety alkalinity is 11.52 mmol / L. The results showed that Macrobrachium nipponense could be cultured in inland saline-alkali waters with pH ≤9.0 and alkalinity ≤20.0 mmol / L.