Pascal We have done both studies of pike migration up fishways and also radio telemetry studies of pike. The radio telemetry studies we did were in the 1970s and we implanted radio transmitters in the body cavity. We have likely implanted more than 100 pike with transmitters in various studies. Mortality was very low (<10%) and some radios functioned for over a year. We have also recovered many fish after weeks a months and the wound is completely healed. If you get in touch with me directly I can mail you some information or fax you the methods sections of some of the studies. Cheers Bill Mackay
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