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Exercise, agonistic behaviour and food acquisition in Arctic charr,Salvelinus alpinus by Colin E. Adams; Felicity A. Huntingford; Jaroslav Krpal; Malcolm Jobling; Scott J. Burnett is a Environmental Science article available to read on EtoBox.

What is Exercise, agonistic behaviour and food acquisition in Arctic charr,Salvelinus alpinus about?

Although swimming is energetically costly, a number of studies on salmonid species have demonstrated increased growth rates in fishes forced to swim for prolonged periods at moderate speeds (typically 1-2 body lengths per set). This suggests that additional energetic costs of swimming are more than met by alternative compensatory gains. The mechanisms underlying such effects are not fully understood. In this paper, we describe an experiment designed to examine one possible mechanism, namely a swimming-induced inhibition of aggression, with consequent beneficial effects on growth. The study used Arctic charr, Salvelinus alpinus, a species for which a positive relationship between exercise and growth has been clearly established. Using direct behavioural observations on small groups, we demonstrate that individuals displaying high levels of aggressive behaviour are able to monopolise access to food and that enforced swimming at a moderate speed (1 body length per set) reduces the incidence of aggression although not the degree of monopolisation of food shown by aggressive individuals. These results suggest that the enhanced growth rates accompanying enforced swimming may reflect lowe

Who reads Exercise, agonistic behaviour and food acquisition in Arctic charr,Salvelinus alpinus?

Author

Colin E. Adams; Felicity A. Huntingford; Jaroslav Krpal; Malcolm Jobling; Scott J. Burnett

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0378-1909)

Published

1995

Language

EN

Field

Environmental Science (Physical Sciences)