聚维酮碘对青海湖裸鲤(♀)×花斑裸鲤(♂)杂交幼鱼的急性毒性和耗氧率影响  

Effects of Povidone Iodine on the Acute Toxicity and Oxygen Consumption Rate of Gymnocypri sprzewalskii(♀)×Gymnocypris eckloni(♂)Hybrid Larvae

作　　者：刘瑞苛 董艳珍[1] 徐大勇[1] 邓思红 LIU Ruike;DONG Yanzhen;XU Dayong;DENG Sihong(School of Animal Science,Xichang University,Xichang,Sichuan 615013,China;Zhengyuan Aquatic Products Co.,Ltd.of Xide County,Xide,Sichuan 616750,China)

机构地区：[1]西昌学院动物科学学院,四川西昌615013 [2]喜德正源水产有限公司,四川喜德616750

出　　处：《西昌学院学报（自然科学版）》2023年第4期20-23,共4页Journal of Xichang University(Natural Science Edition)

基　　金：凉山州科技项目(22ZDYF0181)。

摘　　要：研究了聚维酮碘对青海湖裸鲤(♀)×花斑裸鲤(♂)杂交幼鱼(体长7~8 cm,体质量15.34 g±0.23 g)的急性毒性,并测定了不同浓度聚维酮碘对青海湖裸鲤(♀)×花斑裸鲤(♂)杂交幼鱼耗氧率的影响。结果表明:(1)在(19±1)℃水温条件下,聚维酮碘对青海湖裸鲤(♀)×花斑裸鲤(♂)杂交幼鱼24、48、72和96 h的半致死浓度(LC_(50))分别为3.37、3.15、2.75和2.51μmol/L,安全浓度为0.84μmol/L;(2)在安全浓度(0.84μmol/L)和生产上使用浓度(0.22μmol/L)下,青海湖裸鲤(♀)×花斑裸鲤(♂)杂交幼鱼的耗氧率分别为0.340和0.293 mg(/g·h),窒息点分别为0.417和0.383 mg/L,均显著高于不用聚维酮碘时的耗氧率(0.243 mg(/g·h))和窒息点(0.363 mg/L)(P<0.05)。The acute toxicity of povidone iodine to Gymnocypri sprzewalskii(♀)×Gymnocypris eckloni(♂)hybrid larvae(7-8 cm,15.34 g±0.23 g)was investigated,and the effects of different concentrations of povidone iodine on the oxygen consumption rate of Gymnocypri sprzewalskii(♀)×Gymnocypris eckloni(♂)hybrid larvae were also determined.The re⁃sults showed that:(1)At the water temperature of(19±1)℃,the median lethal concentration(LC_(50))of povidone iodine were 13.37,3.15,2.75和2.51μmol/L for hybrid larvae at 24,48,72 and 96 h,respectively,and the safe concentra⁃tion was 0.84μmol/L;(2)The oxygen consumption rates of hybrid larvae were 0.340 mg(/g·h)and 0.293 mg(/g·h)at the safe concentration(0.84μmol/L)and the production concentration(0.22μmol/L),respectively,and the asphyxia⁃tion points were 0.417 mg/L and 0.383 mg/L,which were all significantly higher than the oxygen consumption rate 0.243 mg(/g·h)and asphyxiation point 0.363 mg/L of hybrid larvae without povidone iodine(P<0.05).

关 键 词：聚维酮碘 青海湖裸鲤 花斑裸鲤 杂交幼鱼 半致死浓度 窒息点 耗氧率 

分 类 号：S965.116[农业科学—水产养殖]