Effects of exotic salmonids on juvenile Atlantic salmon behaviour

Abstract – We examined the effects of two salmonid species, chinook salmon ( Oncorhynchus tschwaytscha ) and brown trout ( Salmo trutta ), both exotic species to Lake Ontario, on behaviour and foraging success of juvenile Atlantic salmon ( S. salar ), a native species to Lake Ontario, in an artifici...

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Bibliographic Details
Published in:Ecology of Freshwater Fish
Main Authors: Scott, R. J., Poos, M. S., Noakes, D. L. G., Beamish, F. W. H.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2005
Subjects:
Ecology
Aquatic Science
Ecology, Evolution, Behavior and Systematics
Atlantic salmon
Online Access:http://dx.doi.org/10.1111/j.1600-0633.2005.00099.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1600-0633.2005.00099.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1600-0633.2005.00099.x
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Summary:Abstract – We examined the effects of two salmonid species, chinook salmon ( Oncorhynchus tschwaytscha ) and brown trout ( Salmo trutta ), both exotic species to Lake Ontario, on behaviour and foraging success of juvenile Atlantic salmon ( S. salar ), a native species to Lake Ontario, in an artificial stream. We found that both exotic species have effects on Atlantic salmon behaviour, but that neither had an effect on foraging success. These results may explain why the Atlantic salmon re‐introduction programme in Lake Ontario has had little success, as more than 3 million exotic salmonids are released in Lake Ontario streams annually.

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