Impact of fish size,water temperature,and MS‐222 concentration on inducing general anesthesia in pikeperch (Sander lucioperca) |
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| Authors: | Maciej Ro?yński Marek Hopko Konrad Stawecki Zdzis?aw Zak?? |
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| Institution: | 1. Department of Aquaculture, Stanis?aw Sakowicz Inland Fisheries Institute, Olsztyn, Poland;2. Department of Ichthyology, Hydrobiology, and Aquatic Ecology, Stanis?aw Sakowicz Inland Fisheries Institute, Olsztyn, Poland |
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| Abstract: | The aim of the study was to determine the optimum concentration of MS‐222 for given size groups of pikeperch and water temperatures. The study considered three size groups of pikeperch (body weight BW] 8.56, 15.72, 52.91 g), an MS‐222 water solution (50, 100, and 150 mg/L), and two temperatures (20 or 23°C). It was revealed that the optimum MS‐222 concentration depended largely on the size of the pikeperch and on water temperature. For fish with a BW <10 g the recommended concentration is 100 mg/L but only at 23°C. For fish with a BW of 10–40 g at an immersion temperature of 20°C the safe MS‐222 concentration ranges from 100 to 150 mg/L. However, at a temperature of 23°C the recommended concentration of the anesthetic is 100 mg/L. Similarly for larger fish, that is, fish with a BW >40 g, the optimum MS‐222 concentration at a water temperature of 20°C is in the range of 100–150 mg/L, but at a temperature of 23°C is it approximately 100 mg/L. Additionally, when exposure to the anesthetic is shorter (several min), a concentration of 150 mg/L is also safe for juvenile pikeperch of this size. |
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| Keywords: | analgesia anesthetic phase pikeperch recovery tricaine methanesulphonate |
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