作 者：
蔺玉华;耿龙武;卢金星;刘永;吴文化;王斌
单 位：
中国水产科学研究院黑龙江水产研究所;中国水产科学研究院鲟鱼繁育技术中心
摘 要：
对咸海卡拉白幼鱼进行了NaCl和NaHCO3急性和亚慢性试验。试验结果表明:24,48,96h的半致死浓度(LD50):NaCl质量浓度分别为22 61,21 66,21 24g L,碱度分别为137 55,129 02,112 23mmol L。鱼对pH耐受性范围(7d内):4 5～10 1。亚慢性试验表明:NaCl质量浓度<5g L对鱼生长无影响;NaCl质量浓度为8g L使鱼生长受抑制;NaCl质量浓度为11g L鱼存活率93%。NaHCO3碱度为0 5g L(6 47mmol L)和1g L(10 64mmol L)处理组与对照组(1 47mmol L)相比,鱼增重5 5%和7 5%;碱度为2g L(23 65mmol L)对鱼生长无影响;碱度为3g L(32 20mmol L)鱼生长受到抑制,60d死亡率5%;碱度为4g L(44 98mmol L)处理组在12d鱼死亡率100%。在盐碱双因子试验中,卡拉白幼鱼在NaCl5g L、碱度23 65mmol L(pH9 2)的水体生长良好,适宜在半咸水中生存。
译 名：
Studies on Tolerance of Chalcalburnus chalcoides aralensis to Salinity and Alkalinity
作 者：
LIN Yu-hua~1, GENG Long-wu~1, LU Jin-xing~1, LIU Yong~1, WU Wen-hua~2, WANG Bin~2(1.Institute of Heilongjiang River Fishery, CAFS, Harbin 150070, China; 2.Technological and Engineering Center of Sturgeon Reproduction, Chinese Academy of Fishery Sciences, Beijing 100039,China)
关键词：
Chalcalburnus chalcoides aralensis; salinity; alkalinity; tolerance
摘 要：
Tolerance of juvenile Chalcalburnus chalcoides aralence to NaCl and alkalinity was studied. Through the experiment of acute toxicity, the 24, 48and 96 hour medium lethal concentration (LD_(50)) values were obtained, which are 22.61, 21.66 and 21.24 g/L for NaCl,and 137.55,129.02 and (112.23 mmol/L) for alkalinity. In the experiment based on the medium concentrations of NaCl 0, 3, 5, 8, 11, 13 and 15 g/L respectively for 40 d, the fish grew normally. When growth was below concentrations (5 g/L), group 8 g/L was inhabited, and survival rate of group 11 g/L was (93%).Under alkalinity in the medium concentrations of NaHCO_3 of 0, 0.5, 1, 2, 3, 4, 5 g/L for (60 d,) the growth rates with both groups of alkalinity 0.5 g/L (6.47 mmol/L)and 1.00 mmol/L)increased by 5.5% and 7.55% compared with the control(1.47 mmol/L); the fish grew normally in the medium of alkalinity 2 g/L((23.65 mmol/L)); the growth rate of group 3 g/L(32.20 mmol/L)decreased, and mortality rate was (5%.) The mortality rate of group 4 g/L(44.98 mmol/L)reached 100%. Tolerance of fish to pH ranged from 4.5 to 10.1. Experiment on accumulated influence of salinity and alkalinity showed that Chalcalburnus chalcoides aralensis could grow normally in water of 0.5% salinity and (23.65 mmol/L) alkalinity (pH 9.2). The above results indicate that Chalcalburnus chalcoides aralensis is suitable to live in brakishwater.
