Radio-transmitted electromyogram signals as indicators of swimming speed in lake trout and brown trout

E.B. Thorstad, F. Økland, Anders Koed, R.S. McKinley

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Swimming speed and average electromyogram (EMG) pulse intervals were highly correlated in individual lake trout Salvelinus namaycush (r(2)=0.52-0.89) and brown trout Salmo trutta (r(2)=0.45-0.96). High correlations were found also for pooled data in both lake trout (r(2)=0.90) and brown trout of the Ema stock (r(2)=0.96) and Laerdal stock (r(2)=0.96). The linear relationship between swimming speed and average EMG pulse intervals differed significantly among lake trout and the brown trout stocks. This successful calibration of EMGs to swimming speed opens the possibility of recording swimming speed of free swimming lake trout and brown trout in situ. EMGs can also be calibrated to oxygen consumption to record energy expenditure. (C) 2000 The Fisheries Society of the British Isles
Original languageEnglish
JournalJournal of Fish Biology
Volume57
Issue number3
Pages (from-to)547-561
ISSN0022-1112
Publication statusPublished - 2000

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