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A small sonic tag for measurement of locomotor behaviour in fish
Author(s) -
Young A. H.,
Tytler P.,
Holliday F. G. T.,
MacFarlane A.
Publication year - 1972
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.1095-8649.1972.tb05652.x
Subject(s) - biology , brown trout , salmo , fish <actinopterygii> , fishery , locomotor activity , zoology , endocrinology
A technique for measuring the patterns and levels of swimming activity of unrestrained fish in their natural environment during a period of 24 h is described. The fish were marked with small tags which emitted continuous ultrasonic signals by which they could be located and tracked using submerged, remotely controlled, directional hydrophones. Preliminary results obtained from 2 brown trout ( Sahno trutta ) showed a pronounced diurnal activity pattern and remarkably low swimming activity levels.