不同盐度条件下氨氮对斑节对虾仔虾的毒性研究  

Toxicity of Ammonia Nitrogen on Penaeus Monodon Larvae under Different Salinity Conditions

作　　者：于建渤 黄学聃 陈欢 陈鹏铮 温振中 孙成波[1,2,3] YU Jianbo;HUANG Xuedan;CHEN Huan;CHEN Pengzheng;WEN Zhenzhong;SUN Chengbo(College of Fisheries,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China;Guangdong Laboratory of Southern Ocean Science and Engineering(Zhanjiang),Zhanjiang,Guangdong 524025,China;Guangdong Provincial Key Laboratory of Pathogenic Biology and Epidemiology of Aquatic Economic Animals,Zhanjiang,Guangdong 524088,China)

机构地区：[1]广东海洋大学水产学院,广东湛江524088 [2]南方海洋科学与工程广东省实验室(湛江),广东湛江524025 [3]广东省水产经济动物病原生物学及流行病学重点实验室,广东湛江524088

出　　处：《水产养殖》2023年第4期16-21,共6页Journal of Aquaculture

基　　金：广东省重点领域研发计划项目(对接国家重大项目)(2020B0202010009);广东省普通高等学校创新团队项目(2021KCXTD026)

摘　　要：开展了不同盐度条件下氨氮对斑节对虾仔虾毒性影响试验。结果表明,盐度为3.0%时,氨氮24,48,72和96 h半致死浓度(LC_(50))分别为91.32,53.92,40.70和25.77 mg/L;盐度为2.5%时,分别为91.95,50.05,35.76和33.71 mg/L;盐度为2.0%的条件下,分别为164.46,98.56,71.05和44.13 mg/L;盐度为1.5%时,分别为97.19,63.97,31.83和26.04 mg/L;盐度为1.0%时,分别为74.79,21.89,13.55和10.81 mg/L;盐度为0.5%时,分别为58.17,12.98,10.46和6.01 mg/L;在盐度3.0%,2.5%,2.0%,1.5%,1.0%和0.5%时,氨氮的安全浓度(SC)分别为2.577,3.371,4.413,2.604,1.081和0.601 mg/L。指出,盐度对氨氮的毒性有较大的影响,盐度过高或者过低,都会增强氨氮对斑节对虾的毒性。提出,斑节对虾仔虾育苗应在盐度2.0%、氨氮对斑节对虾仔虾的毒性最小时进行生产。The toxicity of ammonia nitrogento Penaeus monodon larvae under different salinity conditions was studied by conventional biological toxicity test.The results showed that when the salinity was 3.0%,the 24,48,72 and 96 h LC_(50) of ammonia nitrogen respectivelywere 91.32,53.92,40.70,25.77 mg/L.Under the salinity of 2.5%,LC_(50) of 24,48,72 and 96 h respectively were91.95,50.05,35.76,33.71 mg/L.Under the salinity of 2.0%,LC_(50) of 24,48,72 and 96h respectively were 164.46,98.56,71.05,44.13 mg/L.Under the salinity of 1.5%,LC_(50) of 24,48,72 and 96 h respectively were 97.19,63.97,31.83,26.04 mg/L.Under the salinity of 1.0%,LC_(50) of 24,48,72 and 96 h respectively were 74.79,21.89,13.55,10.81 mg/L.Under the salinity of 0.5%,LC_(50) of 24,48,72 and 96 h respectivelywere 58.17,12.98,10.46,6.01 mg/L.Under the conditions of salinity 3.0%,2.5%,2.0%,1.5%,1.0%,and 0.5%,SC of ammonia nitrogen respectively were 2.577,3.371,4.413,2.604,1.081 and 0.601 mg/L;Therefore,salinity had a great influence on the toxicity of ammonia nitrogen.When the salinity was too high or too low,the toxicity of ammonia nitrogen to P.monodon larvae was stronger.It is suggested that the breeding of Penaeus monodon larvae should be conducted at a salinity of 2.0%and the minimum toxicity of ammonia nitrogen to Penaeus monodon larvae.

关 键 词：斑节对虾仔虾 盐度 非离子氨氮 氨氮 半致死浓度 安全浓度 

分 类 号：S949[农业科学—水产养殖]