Evaluation of marking European silver eels with visible implant elastomer tags and alcian blue
After 183 days, the retention of the visible implant elastomer marks implanted on the belly and along the basis of the ventral fin margin of the European silver eel Anguilla anguilla was 100%. The retention of the alcian blue spots on the belly was 84% after 1 day, but decreased to 68% by the end of the experiment (after 183 days). Marking-induced mortality was 0% for both marking types over the complete trial period.
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