新疆农业大学学报2025，Vol.48Issue(4)：270-277,8.DOI:10.20088/j.cnki.jxau.2025.04.002
NaCl盐度与NaHCO3 碱度对河鲈(Perca fluviatilis)幼鱼的急性毒性及生长性能影响
Acute Toxicity of NaCl Salinity and NaHCO3 Alkalinity and Their Effects on the Growth Performance of Juvenile European Perch(Perca fluviatilis)
摘要
Abstract
In order to study the acute toxic effects,early behavioral responses,and impacts on growth perfor-mance of NaCl salinity and NaHCO3 alkalinity on juvenile perch of Perca fluviatilis,an indigenous economic fish species in Xinjiang.Acute toxicity experiments were conducted under stress exposures of salinity and alkalinity,with the freshwater group as the control.Ten treatment groups were set up,including NaCl salinity(10.00,11.00,12.00,13.00,14.00 g/L)and NaHCO3 alkalinity(15.00,17.00,19.00,21.00,25.00 mmol/L).Mor-tality and behavioral characteristics were recorded within 96-hour to determine the median lethal concentration(LC50)and safe concentration(SC).Based on acute toxicity tests,freshwater,NaCl saline(7.00 g/L),and NaHCO3 alkaline water(10.00 mmol/L)groups were established for a 30 d growth culture experiment to com-pare survival rates,specific growth rates,and fat content.The results show that,no mortality or significant stress responses were observed in the freshwater control group,with clean water conditions.In contrast,as the salinity and alkalinity concentrations and exposure time increased,juvenile perch showed abnormal behaviors,including rapid swimming,rolling,jumping and feeding inhibition.At 24 h,the NaCl salinity LC50 was 13.58 g/L,the SC was 2.76 g/L,the NaHCO3 alkalinity LC50 was 22.71 mmol/L,and the SC was 2.35 mmol/L.After a 30-day rearing experiment,no significant differences in survival rates were observed among the freshwater,saline water,and alkaline water groups.Average weight,body length,and specific growth rate were highest in the freshwater group,lowest in the alkaline water group,and intermediate in the saline water group.Condition factor(CF)was highest in the saline water group,lowest in the alkaline water group,and intermediate in the freshwater group.In summary,the juvenile perch exhibits greater adaptability to salinity than to alkalinity,possess a certain tolerance to salinity stress,while alkalinity stress exerts an inhibitory effect on their growth.The study provides a theoreti-cal basis for the domestication and aquaculture of Perca fluviatilis in saline and alkaline waters.关键词
河鲈/幼鱼/盐碱胁迫/急性毒性/行为特征/生长性能Key words
Perca fluviatilis/juvenile perch/salt-alkali stress/acute toxicity/behavioral characteristics/growth performance分类
农业科技引用本文复制引用
吴勋恒,郑雨菡,吴瑞辰,冯华伟,张俊杰,韩志豪,杨艺..NaCl盐度与NaHCO3 碱度对河鲈(Perca fluviatilis)幼鱼的急性毒性及生长性能影响[J].新疆农业大学学报,2025,48(4):270-277,8.基金项目
新疆维吾尔自治区第二批天山英才培养计划青年托举人才项目(2023TSYCQNTJ0034),新疆维吾尔自治区重点研发项目(2023B02037-2-2) （2023TSYCQNTJ0034）
