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《Journal of Henan Agricultural Sciences》 2018-07
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Study on Acute Toxicity of Eight Kinds of Aquatic Drugs to Elongateloach( Leptobotia elongata)

ZHANG Jianming;TIAN Tian;JIANG Wei;Institute of Chinese Sturgeon Research,China Three Gorges Project Corporation;Hubei Key Laboratory of Three Gorges Project for Conservation of Fishes;  
Under the conditions of water temperature of( 22 ± 1) ℃ and dissolved oxygen of( 6. 7 ± 0. 5)mg/L and p H value of 7. 9 ± 0. 2,static method aquatic organism acute toxicity test was used to study the effects of 8 aquatic drugs on acute toxicity of juvenile Leptobotia elongata,which each body weight was( 1. 95 ± 0. 24) g. The aims were to provide reference data for the use of conventional drugs during the juvenile culture period and to provide guidance for actual production. The test results showed that the median lethal concentrations of florfenicol,doxycycline hydrochloride,povidone iodine,chloramine T,quinine hydrochloride,methylene blue,abamectin and trichlorfon were 1 691. 18,606. 03,51. 49,32. 80,35. 97,12. 80,0. 25,1. 54 mg/L for 24 hours,the 1 626. 97,486. 18,45. 51,30. 98,26. 93,11. 16,0. 18,1. 41 mg/L for 48 hours,the 1 575. 34,390. 03,40. 23,27. 96,24. 10,9. 56,0. 16,1. 16 mg/L for 72 hours,and the 1 515. 53,359. 99,34. 23,27. 65,20. 17,8. 63,0. 13,1. 10 mg/L for 96 hours. The safe concentrations of 8 kinds of aquatic drugs were 451. 73,93. 87,10. 67,8. 29,4. 53,2. 55,0. 03,0. 35 mg/L,respectively. According to the toxicity of toxic substances on fish toxicity evaluation criteria for Leptobotia elongata,avermectin was highly toxic,methylene blue and trichlorfon were medium toxic,florfenicol,doxycycline hydrochloride,povidone iodine,chloramine T,and quinine hydrochloride were low toxic.
【Fund】: 国家重点研发计划重点专项(2016YFC0502210);; 中国长江三峡集团公司项目(201703076)
【CateGory Index】: S948
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