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Long‐term retention of dummy acoustic transmitters in adult brown trout
Author(s) -
Kennedy Richard J.,
Evans Derek,
Allen Michelle
Publication year - 2020
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14498
Subject(s) - salmo , biology , brown trout , fish <actinopterygii> , trout , fishery , term (time) , zoology , salmonidae , physics , quantum mechanics
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 throughout the experiment with an overall tag loss rate of c. 0 . 035 tags per day. 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.