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Radio‐transmitted electromyogram signals as indicators of swimming speed in lake trout and brown trout
Author(s) -
Thorstad E. B.,
ØKland F.,
Koed† A.,
McKinley R. S.
Publication year - 2000
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/j.1095-8649.2000.tb00259.x
Subject(s) - brown trout , trout , salmo , fishery , salvelinus , biology , salmonidae , fish <actinopterygii>
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 Emå stock ( r 2 =0·96) and Lærdal 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.