作 者：
魏玉众;张人铭;宋明波;时春明;阿达可白克·可尔江
单 位：
新疆维吾尔自治区水产科学研究所/农业部西北地区渔业资源环境科学观测实验站
关键词：
欧鲇;盐度;碱度;安全浓度(SC);耐受性
摘 要：
【目的】研究欧鲇幼鱼盐碱胁迫下机体耐受性。为欧鲇苗种和成鱼规模化养殖及天然水体种质资源的增殖与保护提供基础数据。【方法】采用单因子静态急性毒性实验法,以欧鲇幼鱼(平游仔鱼)为研究对象,对其盐、碱耐受能力进行研究。【结果】在pH和温度分别为6.8～7.5和21～25℃条件下,欧鲇幼鱼12、24、48、72和96 h盐度LC_(50)分别为11.907 7‰、9.795 0‰、7.859 6‰、6.313 7‰、3.911 5‰,SC为1.518 1‰;在12、24、48、72和96 h碱度LC_(50)分别为21.866 9、4.770 4、3.140 6、1.274 8和0.428 4 g/L,SC为0.408 4 g/L。欧鲇幼鱼对盐、碱的耐受性较差,在实际养殖过程中需可以采取相应的应激防范措施来激活欧鲇幼苗体内所固有的耐盐、碱调节功能,以提高其苗种养殖成活率。【结论】欧鲇幼鱼盐度和碱度SC分别为1.518 1‰和0.408 4 g/L,对盐、碱度水体环境耐受性较差。根据部分淡水鱼类对盐、碱度耐受性研究相关方法与成果,采取相应的应激防范措施,可以激活欧鲇幼苗体内所固有的耐碱调节功能,以提高其养殖成活率。
译 名：
Studies on the Tolerance of Silurus glaris Linnaeus Fingerlings to Salinity and Alkalinity
作 者：
WEI Yu-zhong;ZHANG Ren-ming;SONG Ming-bo;SHI Chun-ming;Karjan Adahbek;Xinjiang Fisheries Research Institute, Scientific Observing and Experimental Station of Fishery Resources and Environment in Northwest China, Ministry of Agriculture;
关键词：
Silurus glaris Linnaeus;;salinity;;alkalinity;;safe concentration;;tolerance
摘 要：
【Objective】 This paper aimed to the tolerance of Silurus glaris Linnaeus under the salinity and alkalinity.【Method】Silurus glaris Linnaeus was preferences under the gradient concentrations of salinity(S) and alkalinity(A) were studied by acute toxicology.【Result】When Alk was around pH 6.8-7.5 with temperature(23±2)℃, The LC_(50) of S to Silurus glaris Linnaeus were 11.907,7‰、9.795,0‰、7.859,6‰、6.313,7‰ and 3.911,5‰ at 12, 24, 48, 72 and 96 h, respectively. The safe NaCl concentration was 1.518,1‰. The LC_(50) of A to Silurus glaris Linnaeus were 21.866,9 、4.770,4 、3.140,6 、1.274,8 and 0.428,4 g/L, respectively. The safe NaHCO_3 concentration was 0.408,4 g/L. 【Conclusion】This study is designed for provide basic data to Silurus glaris Linnaeus for Large area aquaculture promotion and the protection of wild germplasm resources.
