淡水渔业2026，Vol.56Issue(3)：76-83,8.
NaHCO3碱度、NaCl盐度以及盐碱混合对方正银鲫幼鱼的急性毒理研究
Acute toxicity study of NaHCO3 alkalinity,NaCl salinity,and combined salt-alkali effects onCarassius auratus gibelio fry
摘要
Abstract
This study employed 3-month-old C.auratus gibelio as subjects to investigate the tolerance of Carassius auratus gibelio in saline-alkali environments.Using a 96-hour acute stress test method at a water temperature of(24±1)℃,the fish were exposed to six alkalinity gradient solutions ranging from 0 to 150 mmol/L,and eight salinity gradients ranging from 0 to 14 g/L.Based on the LC50 values from single-factor toxicity tests for alkalin-ity and salinity,combined toxicity effects were evaluated using dual-column combinations with alkalinity gradi-ents of 30 and 60 mmol/L and salinity gradients of 6,8,and 10 g/L.The results showed that the half-lethal concentrations(LC50)of alkalinity for 3-month-old C.auratus gibelio at 12,24,48,72,and 96 h were 122.37,93.78,82.58,74.20,and 68.13 mmol/L,respectively,with a safe concentration(SC)of 19.21 mmol/L.For salinity,the LC50 values at 12,24,48,72,and 96 h were 14.14,13.41,13.30,13.11,and 12.65 g/L,respectively,with a safe concentration(SC)of 3.92 g/L.Under combined salt-alkali stress,when alkalinity was 30 mmol/L,the LC50 values for salinity at 24,48,72,and 96 h for silver crucian carp fry were 13.02,10.74,9.92,and 9.33 g/L,respectively.At an alkalinity of 60 mmol/L,the LC50 values at 12,24,48,72,and 96 h were 9.84,8.50,5.32,5.33,and 2.61 g/L,respectively.At alkalinity lev-els of 30 mmol/L and 60 mmol/L,the salinity SC values were 2.19 g/L and 0.62 g/L,respectively.At salin-ities of 6,8,and 10 g/L,the SC values for alkalinity were 9.41,5.09,and 4.35 mmol/L,respectively.The AI indices for the combined toxicity of salinity and alkalinity to the square-headed C.auratus gibelio were all negative,indicating an antagonistic effect.The toxic effects of the combined salt-alkali mixture were greater than those of salt or alkalinity alone but less than the theoretical sum of the two.关键词
方正银鲫(Carassius auratus gibelio)/碱度/盐度/半致死浓度/耐盐碱性能Key words
Carassius auratus gibelio/alkalinity/salinity/LC50/salinity tolerance分类
农业科技引用本文复制引用
张林龙,姜晓娜,赵新宇,葛彦龙,李池陶,胡雪松,贾智英..NaHCO3碱度、NaCl盐度以及盐碱混合对方正银鲫幼鱼的急性毒理研究[J].淡水渔业,2026,56(3):76-83,8.基金项目
国家现代农业产业技术体系(CARS-45-07) （CARS-45-07）
中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2023TD35) （2023TD35）
黑龙江省种业创新发展资金 （）
