Şen, Halil Ege University - Faculty of Fisheries - Aquaculture Department, Turkey , Tanrıkul, T. Tansel Ege University - Faculty of Fisheries - Aquaculture Department, Turkey

Effects of 2-Phenoxyethanol on cuttlefish Sepia officinalis L. (Cephalopoda: Sepiidae)

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Effects of 2-Phenoxyethanol (2-PhOH) on cuttlefish Sepia officinalis (L.) were investigated. The five concentrations (0.10, 0.15, 0.20, 0.25 and 0.30 ml/L) of 2-PhOH were dissolved directly into 15 L transparency glass aquarium containing of 10 L continuously aerated seawater (pH 7.68, O2 6.8 mg/l, salinity 37‰ at 19.7°C). After 2-PhOH treatments, the cuttlefishes were transferred immediately to a polyester recovery tank with 450 L of well-aerated seawater, where they were observed in 48-h due to any mortality. Six cuttlefishes, the mean body weight was 224.46 ± 56.20 g (n=30) were used individually in each experiment. According to the present results, at 0.1 ml/L of 2-PhOH level neither anesthetic effects nor mortality occurred on the cuttlefish, but more than 50% mortality occurred between 0.15 and 0.30 ml/L of 2-PhOH concentrations. The percentages of survival were 100% for 0.10 ml/L, 33.3% for 0.15 and 0.20 ml/L, and 16.7% for 0.25 and 0.30 ml/L of 2-PhOH concentrations (P 0.05). The reminders recovered within 5 minutes and survived over 48 hours. Finally, the current study demonstrated that 2-PhOH could not be recommended for S. officinalis due to its inefficiency and toxicity.

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2 , Phenoxyethanol , anaesthesia , cuttlefish , Sepia officinalis , toxicity.

Ege Journal Of Fisheries an‎d Aquatic Sciences

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