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Comparative efficacy of two anesthetic agents in the Sobaity sea bream, Sparidentex hasta (Valenciennes 1830)

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Abstract

It is known that responses to the same anesthetic can vary considerably among different fish species. In this investigation, the efficacy of two anesthetic agents (clove powder and 2-phenoxyethanol) was compared in Sobaity sea bream, Sparidentex hasta (Valenciennes 1830). Induction and recovery times for S. hasta anesthetized with anesthetic agents were dose-dependent (P < 0.05). The onset of individual phases of anesthesia and recovery times depended significantly on the concentration of the anesthetic used (P < 0.05). An inverse exponential relationship was observed between concentrations of anesthetic and induction time, whereas exponential relationships were observed between concentrations and recovery times for both anesthetic agents evaluated. The lowest effective concentrations based on the efficacy criteria of complete anesthetic induction within 180 s and recovery within 300 s were determined to be 100 mg L−1 (induction time 1.92 ± 0.10 min and recovery time 2.48 ± 0.17 min) for clove powder and 200 μL L−1 (induction time 2.55 ± 0.14 min and recovery time 5.66 ± 0.62 min) for 2-phenoxyethanol. Clove powder was proven to be more effective, and the latter appears to meet many of the criteria of an ideal anesthetic for this fish species.

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Acknowledgment

We thank Mr. Najafabadi and Mr. Sedaghat the hatchery owners of Bandare-e-Moallem hatchery and their crew to providing facilities.

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Authors and Affiliations

  1. Department of Fisheries, Islamic Azad University, Bandar Abbas Branch, P.O. Box: 79159-1311, Bandar Abbas, Iran

    Majid Afkhami, Alireza Salarzadeh & Maryam Ehsanpour

  2. Department of Health and Aquatic Diseases, Faculty of Veterinary Medicine, University of Tehran, P.O. Box: 14155-6453, Tehran, Iran

    Mohammad Reza Ahmadi

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  1. Majid Afkhami
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  2. Mohammad Reza Ahmadi
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  3. Alireza Salarzadeh
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  4. Maryam Ehsanpour
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Correspondence to Majid Afkhami.

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Afkhami, M., Ahmadi, M.R., Salarzadeh, A. et al. Comparative efficacy of two anesthetic agents in the Sobaity sea bream, Sparidentex hasta (Valenciennes 1830). Comp Clin Pathol 23, 841–846 (2014). https://doi.org/10.1007/s00580-013-1699-3

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