Effect of Lidocaine Hydrochloride and Clove Oil as an Anaesthetic on Korean Rose Bitterling, Rhodeus uyekii and Oily Bifterling, Acheilognathus koreensis

Abstract

The efficacy of lidocaine hydrochloride and Clove oil as anaesthetics was evaluated in the Korean rose bitterling, Rhodeus uyekii (Mori, 1935) and oily bitterling, Acheilognathus koreensis (Kim and Kim, 1990) at four different temperatures of and . When complete anaesthesia was acquired less than 3 min and recovery was acquired less than 10 min, the optimal dose range of lidocain hydrochloride at was 250550 ppm in Korean rose bitterling, and 150550 ppm in oily bitterling, respectively. In case of Clove oil, the optimal dose range at was 40200 ppm in Korean rose bitterling and 80240 ppm in oily bitterling, respectively. Both of lidocaine hydrochloride and Clove oil resulted in a negatively dose-dependent manner for anaesthesia induction time in these two species. Recovery times were more variable in relation to anaesthetic doses, but in general higher anaesthetic doses resulted in similar or longer recovery time. As expected, the lower temperature resulted in longer anaesthesia induction and recovery time. The study demonstrated that lidocaine hydrochloride and Clove oil can be used as effective anaesthetics in these two species. The results from this study could be useful for aquaculturists industry and other related husbandry practices that require anaesthesia of Korean rose bitterling and oily bitterling.