The efficacy of 2-phenoxyethanol as anaesthetic for juvenile pearl spot, Etroplus suratensis (Bloch)
2013
Sajan, S. | Sreenath, V. R. | Mercy, T. V. Anna | Syama, S.
The use of anaesthetic agents may reduce stress-induced damage to the fish. In the current investigation, anaesthetic efficacy of 2-phenoxyethanol (500 μL.L-1, 600 μL.L-1, 700 μL.L-1 and 800 μL.L-1) on Etroplus suratensis (Bloch 1790)was evaluated. 2-phenoxyethanol appears to be a highly effective anaesthetic in fishes. The time periods necessary for the induction of particular characteristic stages of induction and recovery were determined. The results showed that 600 μL.L-1 was the effective concentration that induces anaesthesia in E. suratensis (induction in 171±13 sec and recovery time 149±21 sec; p>0.05). An exponential relationship was observed between concentrations and recovery time, whereas an inverse exponential relationship was observed between concentrations of anaesthetic and induction time.
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