两种药物对脊尾白虾各期溞状幼体的毒性试验

Experiment on Toxicity of Two Drugs to Zoea of Exopalaemon carinicauda

采用静水实验法进行甲醛和孔雀石绿对脊尾白虾 (Exopalaemoncarinicauda)各期状幼体 (Z1～Z6)的急性毒性研究。结果表明 :在pH值为 7 9± 0 5、水温 (2 6 0± 0 5 )℃的条件下 ,甲醛对脊尾白虾Z1～Z6的半致死浓度 (48hLC50 )分别为 176× 10 -6,16 7× 10 -6,15 0× 10 -6,16 7× 10 -6,113× 10 -6,5 5× 10 -6,安全浓度 (Cs)分别为 30× 10 -6,17× 10 -6,32× 10 -6,11× 10 -6,4× 10 -6,9× 10 -6;孔雀石绿对脊尾白虾Z1～Z6的 4 8hLC50 分别为 0 4 5 1× 10 -6,0 4 4 8× 10 -6,0 5 91× 10 -6,0 4 4 0× 10 -6,0 380× 10 -6,0 15 8× 10 -6,Cs分别为 0 0 6 9× 10 -6,0 0 5 8× 10 -6,0 10 2× 10 -6,0 0 90× 10 -6,0 0 71× 10 -6,0 0 34× 10 -6。

The tests for the acute toxicity of formaldehyde and malachite green on zoea(Z 1～Z 6)of Exopalaemon carinicauda were carried out under pH of 7 9±0 5,temperature of (26 0±0 5)℃ Results indicated that the 48 hLC 50 of for maldehyde to Z 1～Z 6 was 176×10 -6 ,167×10 -6 ,150×10 -6 ,167×10 -6 ,113×10 -6 ,55×10 -6 ;the safe concertration was 30×10 -6 ,17×10 -6 ,32×10 -6 ,11×10 -6 ,4×10 -6 ,9×10 -6 ;respectively.The 48 hLC 50 of malachite green on Z 1～Z 6 was 0 451×10 -6 ,0 448×10 -6 ,0 591×10 -6 ,0 440×10 -6 ,0 380×10 -6 ,0 158×10 -6 ;the safe concertration was 0 069×10 -6 ,0 058×10 -6 ,0 102×10 -6 ,0 090×10 -6 ,0 071×10 -6 ,0 034×10 -6 respectively.The Z 5 and Z 6 were highly sensitive to the testing drugs.