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¹ Mustafa Kemal University, Agriculture Faculty, Animal Sciences Department Antakya, Hatay, Turkey
² Muğla Sıtkı Koçman University, Faculty of Fisheries and Aquaculture, Aquaculture Department, Muğla, Turkey
³ Mediterranean Fisheries Research, Production and Training Institute, Döşemealtı, Antalya, Turkey DOI : 10.4194/1303-2712-v17_1_15 Viewed : 3794 - Downloaded : 3499 The efficacy of clove oil, 2-phenoxyethanol and benzocaine was tested on captive-bred European catfish (wels), Silurus glanis L., 1758 in this study. According to effectiveness criteria, the most optimal implementation results were obtained from 100 μl L-1 (induction 69.00±6.48 s and recovery 253.86±14.78 s) clove oil, 1000 μl L-1 (induction 88.71±8.50 s and recovery 201.43±12.19 s) PE, and 100 μl L-1 (induction 103.00±6.90 s and recovery 215.71±19.99 s) benzocaine. The concentration of anesthetics agent used directly affected the onset of each physiological respond (p<0.05). The relationship between doses and induction times was inverse exponential, in spite of that an exponential relationship was confirmed between doses and recovery times for all anesthetics. In conclusion, all these three anesthetics can be effectively used for wels. Keywords : European catfish, clove oil, 2-phenoxyethanol, benzocaine, anesthesia