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Anaesthetic effects of clove oil on seven species of tropical reef teleosts

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The anaesthetic potential of the clove oil was tested on the following species of tropical reef fishes: Abudefduf saxatilis, Stegastes variabilis, Pareques acuminatus, Acanthurus chirurgus, Sparisoma axillare, Lutjanus apodus and Bathygobius soporator. Induction and recovery times from anaesthesia were compared using various concentrations (20, 30, 40, 50 and 60 mg l−1). Induction and recovery times were not affected by variations in fish total length. When exposed to any of the five tested concentrations of clove oil, specimens achieved a deep state of anaesthesia, with induction and recovery times of <180 and <300 s, respectively. Nevertheless, to maximize safety and reduce fish mortality and stress, the lowest concentration (20 mg l−1) is recommended during field sampling.

Keywords: Brazil; anaesthesia; clove oil; induction; recovery; reef fishes

Document Type: Regular Paper


Affiliations: Departamento de Sistemática e Ecologia, Universidade Federal da Paraíba, CCEN, João Pessoa, PB 58059-900, Brazil

Publication date: November 1, 2006


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