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The efficacy of clove oil as an anaesthetic for rainbow trout, Oncorhynchus mykiss (Walbaum)
Author(s) -
Keene J L,
Noakes D L G,
Moccia R D,
Soto C G
Publication year - 1998
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.1998.00927.x
Subject(s) - rainbow trout , biology , fishery , fish <actinopterygii> , zoology
The anaesthetic effects of clove‐oil‐derived eugenol were studied in juvenile rainbow trout, Oncorhynchus mykiss (Walbaum). Acute lethality and the effects of multiple exposures to eugenol were measured. The estimated 8‐96 h LC 50 for eugenol was found to be approximately 9 p.p.m. Times to induction and recovery from anaesthesia were measured and compared with MS‐222 under similar conditions. Eugenol generally induced anaesthesia faster and at lower concentrations than MS‐222. The recovery times for fish exposed to eugenol were six to 10 times longer than in those exposed to similar concentrations of MS‐222. Clove oil eugenol was determined to be an acceptable anaesthetic with potential for use in aquaculture and aquatic research. Doses of 40‐60 p.p.m. eugenol were found to induce rapid anaesthesia with a relatively short time for recovery in juvenile trout.