The diet of juvenile lake trout Salmo trutta L. in rivers of the Onega basin in autumn

The diet of juvenile lake trout Salmo trutta L. in rivers of the Onega basin in autumn The diet of juvenile trout and the state of their food resources in autumn (September–November) were studied in two typical small rivers tributary to Lake Onega (Karelia) in 2003. The relationship between the composition of food objects among benthic and drifting invertebrates and the food spectrum of trout was analyzed. The results show that before freeze-up, despite the disappearance of aerial and terrestrial insects, juveniles trout continue active feeding. However, their feeding priorities change: they begin to take food objects directly from the bottom, as well as from the water surface and within the water column. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

The diet of juvenile lake trout Salmo trutta L. in rivers of the Onega basin in autumn

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2008 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Environment, general; Ecology
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1134/S1067413608020070
Publisher site
See Article on Publisher Site

Abstract

The diet of juvenile trout and the state of their food resources in autumn (September–November) were studied in two typical small rivers tributary to Lake Onega (Karelia) in 2003. The relationship between the composition of food objects among benthic and drifting invertebrates and the food spectrum of trout was analyzed. The results show that before freeze-up, despite the disappearance of aerial and terrestrial insects, juveniles trout continue active feeding. However, their feeding priorities change: they begin to take food objects directly from the bottom, as well as from the water surface and within the water column.

Journal

Russian Journal of EcologySpringer Journals

Published: Jan 19, 2011

References

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