Feeding of Atlantic salmon ( Salmo salar L.) postsmolts in a fjord in central Norway

The feeding habits of postsmolt Atlantic salmon (Salmo salar) caught by two-boat trawling were studied in Trondheimsfjord in central Norway. Fish caught in the inner fjord near the estuaries of the Orkla and Gaula rivers had recently fed on food produced in freshwater and estuarine habitats, namely...

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Bibliographic Details
Published in:Canadian Journal of Zoology
Main Authors: Levings, C. D., Hvidsten, N. A., Johnsen, B. Ø.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1994
Subjects:
Animal Science and Zoology
Ecology, Evolution, Behavior and Systematics
Norway
Orkla
Atlantic salmon
Salmo salar
Copepods
Online Access:http://dx.doi.org/10.1139/z94-113
http://www.nrcresearchpress.com/doi/pdf/10.1139/z94-113
Description
Summary:The feeding habits of postsmolt Atlantic salmon (Salmo salar) caught by two-boat trawling were studied in Trondheimsfjord in central Norway. Fish caught in the inner fjord near the estuaries of the Orkla and Gaula rivers had recently fed on food produced in freshwater and estuarine habitats, namely stonefly and mayfly nymphs and gammarid amphipods. Stomach contents of postsmolts caught farther seaward were dominated by adult insects, with smaller proportions of the food volume originating from marine pelagic (larval fish, hyperiid amphipods, calanoid copepods) and nearshore (gammarid amphipods) habitats.

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