Effects of anaesthetics (halothane and MS-222) on crayfish,Astacus astacus |
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| Affiliation: | 1. Institute of Oceanography and Fisheries, Šetalište I. Meštrovića 63, 21000 Split, Croatia;2. Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10000 Zagreb, Croatia;1. Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling FK9 4LA, Scotland, United Kingdom;2. Skretting Aquaculture Research Centre, PO Box 48, Stavanger 4001, Norway |
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| Abstract: | The effects of an anaesthetic despersive in air and usually applied in mammals (halothane, Hoechst) and of an anaesthetic soluble in water and applied in fish (MS-222, Sandoz) were investigated in experiments with crayfish, Astacus astacus (L.). Halothane was used at concentrations of 0.01, 0.06, 0.12, 0.5 and 1.0 vol.%, while MS-222 was applied in two concentrations, dissolved in the ratios of 1 : 1000 and 1 : 10 000. Halothane was most effective at 0.5 vol. %. The concentrations of MS-222 which were applied in our experiments had almost no effect on the crayfish. |
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