Foraging behaviour changes of Arctic charr during smolt migration in northern Norway

Smolt of anadromous Arctic charr Sahelinus alpinus (L.) migrating from Storvatn, northern Norway, had a similar feeding intensity as resident Arctic charr from the benthic‐ and pelagic zone in early summer in fresh water. While smolts fed mostly on surface insects, however, resident Arctic charr had...

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Bibliographic Details
Published in:Journal of Fish Biology
Main Authors: Rikardsen, H., Amundsen, P.‐A., Bodin, P. J.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2002
Subjects:
Arctic
Norway
Arctic charr
Northern Norway
Online Access:http://dx.doi.org/10.1111/j.1095-8649.2002.tb00297.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2002.tb00297.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2002.tb00297.x
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Summary:Smolt of anadromous Arctic charr Sahelinus alpinus (L.) migrating from Storvatn, northern Norway, had a similar feeding intensity as resident Arctic charr from the benthic‐ and pelagic zone in early summer in fresh water. While smolts fed mostly on surface insects, however, resident Arctic charr had a more broader diet consisting mostly of chironomids, Bosmina sp., benthic prey and surface insects. This indicates that Arctic charr smolts have adopted a surface oriented feeding behaviour prior to their sea migration.

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