氟对孔雀鱼的急性毒性及安全浓度评价  

Acute toxicity and safety assessment of fluoride on juveniles Poecilia reticulate

作　　者：薛文娟[1,2] 李守杰[1] 贾如辉 宋杰[2] 曹谨玲[2] 陈剑杰[2] 宋晶[2] 罗永巨 

机构地区：[1]渭南职业技术学院,陕西渭南714000 [2]山西农业大学动物科技学院,山西省生态畜牧与环境兽医学重点实验室,山西太谷030801 [3]广西水产科学研究院,南宁530021

出　　处：《淡水渔业》2016年第1期99-102,共4页Freshwater Fisheries

基　　金：中国博士后科学基金项目(2012M520601,2013T60267);山西省自然科学基金项目(2009021038);山西农业大学科研启动基金(XB2009003);山西农业大学博士后基金(92462);山西农业大学科技创新基金(2009005)

摘　　要：为检测氟对鱼类的生态毒性效应,采用静态生物毒性试验方法研究了氟离子对孔雀鱼(Poecilia reticulate)幼鱼的急性毒性效应,记录其中毒症状及24 h,48 h,72 h和96 h死亡数,并进行统计分析。结果表明:氟暴露条件下孔雀鱼幼鱼出现焦躁不安、失去平衡、呼吸减弱等中毒症状,且随着氟暴露浓度的增加和暴露时间的延长,死亡率逐渐增加,存在明显的剂量效应和时间效应关系;氟对孔雀鱼幼鱼24 h、48 h、72 h、96 h的LC50分别为397.38、231.36、207.73、200.24 mg/L,氟对孔雀鱼幼鱼的安全质量浓度为2.002 4 mg/L,说明氟离子对孔雀鱼幼鱼为低毒性。该值低于我国部分高氟地区地下水、地表水及人为氟污染水体中的氟离子浓度。Static acute toxicity trial on juvenile Poecilia reticulate was carried out to explore the safe criteria of fluoride to fish. Toxicity symptoms of fluoride in juvenile P. reticulate included abnormal motility,anxiety,loss of equilibrium,changes in gill ventilation. The mortality rate of juvenile P. reticulate increased with the elevated fluoride concentration and prolonged exposure time,and there were obvious dose-response and time-response relationships. The LC50 of fluoride in 24 h,48 h,72 h,and 96 h on juvenile P. reticulate were 397. 38,231. 36,207. 73,200. 24 mg / L,respectively. The safe concentration of fluoride in water for juvenile P. reticulate was 2. 002 4 mg / L,indicating that the toxicity of fluoride on juvenile P. reticulate belong to low toxicity. Based on the fluoride concentration in water of China,the results highlighted the necessity of management of fluoride in water to protect aquatic animals and provide basic data for the further research on the fluoride toxicology of P. reticulate.

关 键 词：氟 孔雀鱼(Poecilia reticulate)幼鱼 急性毒性 安全浓度 LC50 

分 类 号：S931.3[农业科学—渔业资源]