Animal, plant and human health and welfare
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Browsing Animal, plant and human health and welfare by Author "Allen, Michelle M."
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Item Long term retention of dummy acoustic transmitters in adult brown trout(Wiley, 2020-08-26) Kennedy, Richard; Evans, Derek W.; Allen, Michelle M.A group of 36 1+ age class Salmo trutta were surgically implanted with dummy acoustic tags and monitored for 370 days. In total 13 tags were expelled through-out the experiment with an overall tag loss rate of c. 0.035 tag/d. Fish length was the only explanatory variable which had a significant association with subsequent tag expulsion. The estimated probability of retaining a tag for a year for a fish of length 32 cm was 0.76, 34 cm was 0.60 and 36 cm was 0.38. The long term tag loss patterns were examined and discussed.