期刊
AQUACULTURE RESEARCH
卷 31, 期 6, 页码 537-546出版社
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1365-2109.2000.00478.x
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This study investigated the feasibility of using clove oil as an alternative to tricaine methanesulphonate as a fish anaesthetic, particularly in fish stress research. The physiological stress responses of juvenile chinook salmon Oncorhynchus tshawytscha (Walbaum) anaesthetized with either tricaine (50 mgL(-1)) or clove oil (20 p.p.m.) were compared using unanaesthetized fish as controls. Haematocrit, serum cortisol and serum glucose concentrations, serum lysozyme activity and differential leucocyte counts were measured from blood samples collected before, during and upon recovery from anaesthesia and at specified intervals up to 72 h after recovery. Differences between the two anaesthetic groups were not significant for most of the physiological traits measured. Serum lysozyme activity of control fish, however, was significantly suppressed relative to the treated fish for 72 h after stress. Clove oil may be a safe and cost-effective alternative to tricaine without significantly affecting study results. Furthermore, clove oil may be more practical for field-based research, because a withdrawal period is unnecessary, and clove oil does not pose an environmental hazard.
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