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Swimming activity of perch, Perca fluviatilis L.
Author(s) -
Alabaster J. S.,
Stott B.
Publication year - 1978
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.1095-8649.1978.tb04205.x
Subject(s) - perch , biology , dusk , darkness , fishery , trough (economics) , shore , zoology , fish <actinopterygii> , ecology , botany , macroeconomics , economics
The swimming excursions of individual perch, measured automatically, within either cages in Windermere or in a trough on the shore, showed increases at dawn and dusk and in the summer. Similar measurements in troughs in the laboratory showed increased activity following a change from light to dark and vice versa, a pattern that was obliterated by either continuous light or continuous darkness. These results are discussed in relation to water temperature and catches of perch in traps.