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Is there genetic variation in the response to competition intensity in juvenile brown trout Salmo trutta?

Robertsen, Grethe; Kvingedal, Eli; Einum, Sigurd
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2473368
Date
2011
Metadata
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Original version
Journal of Fish Biology. 2011, 78 (2), 635-646.   10.1111/j.1095-8649.2010.02886.x
Abstract
Effects of intraspecific competition intensities on the relative performance (growth and movement) of juvenile brown trout Salmo trutta originating from nine different families were tested in tank experiments and in semi-natural streams. Both growth and movement differed consistently among families, indicating genetic variation in these traits. There were no significant interaction effects, however, between the intensity of competition and family origin on performance in either of the two experimental systems. Thus, genetic variation in response to competition intensity appeared to be limited in the population from which the juveniles used in this experiment originate.
Publisher
Wiley
Journal
Journal of Fish Biology

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