Turkish Journal of Fisheries and Aquatic Sciences
2011, Vol 11, Num, 3 (Pages: 463-467)
Effect of Exposure Duration on Time to Recovery from Anaesthesia of Clove Oil in Juvenile of Russian Sturgeon
Bilal Akbulut 1 ,Eyüp Çakmak 1 ,Nilgün Aksungur 1 ,Yahya Çavdar 1
1 Central Fisheries Research Institute, Adil Yazar St., Kaşüstü, Yomra, Trabzon, Turkey
DOI :
10.4194/1303-2712-v11_3_17
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The efficacy of clove oil as an anaesthetic was evaluated in Juvenile of Russian sturgeon (Acipenser gueldenstaedtii)
under two experiments. Dose response examined using four anaesthetic concentrations varying from 0.22 to 0.90 g/L of clove
oil and effect of exposure duration on the recovery time analysed for 5 and 10 min. Mean body length (cm), 24.9±1.37 and
weight (g) 63.2±10.89, n=120, juvenile Russian sturgeon placed individually to the anaesthetic bath prepared with clove oil,
and induction (I1: Sedation and I2: Loss of equilibrium) and recovery times (R1: Regain of equilibrium and R2: Sedation)
recorded in seconds. Allowing fish remain in the anaesthesia after fish reaching anaesthesia stage, time to recovery from
anaesthesia recorded. Fish exposed to clove oil failured to respond to external stimuli and reached to anaesthesia, sympocal
stage in <3 min and recovered in <5 min at all doses except 0.22 g/L dose of clove oil. Exposure five and ten minute to
anaesthesia at the 0.22, 0.45 and 0.90 g/L concentrations, fish recovered from anaesthesia in <10 min, except 0.90 g/L. The
higher dose of clove oil resulted in significantly shorter induction time and prolonged recovery time. While correlation
between induction time and dose determined as negative, r= -0.594 and a positive correlation has been found between dose
and recovery time, r=0.422 (P<0.05). The study demonstrated that clove oil can be used as an effective anaesthetic measuring
length and weight of juvenile Russian sturgeon and dose and exposure duration effect on time to recovery from anaesthesia of
clove oil.
Keywords :
Anaesthesia, clove oil, dose response, exposure duration, recovery time