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dc.contributor.authorDavidsen, Jan Grimsrud
dc.contributor.authorDaverdin, Marc
dc.contributor.authorArnekleiv, Jo Vegar
dc.contributor.authorRønning, Lars
dc.contributor.authorSjursen, Aslak Darre
dc.contributor.authorKoksvik, Jan Ivar
dc.date.accessioned2014-06-29T10:41:09Z
dc.date.accessioned2015-06-05T14:08:53Z
dc.date.available2014-06-29T10:41:09Z
dc.date.available2015-06-05T14:08:53Z
dc.date.issued2014
dc.identifier.citationJournal of Fish Biology 2014nb_NO
dc.identifier.issn0022-1112
dc.identifier.urihttp://hdl.handle.net/11250/284723
dc.descriptionAuthor preprintnb_NO
dc.description.abstractTo study migration performance and return rates of hatchery brown trout Salmo trutta smolts the first 5 months after release, 50 fish in each year (fork length, LF, 158–288 mm) were in two subsequent years tagged with acoustic transmitters and recorded by automatic listening stations in the River Nidelva (central Norway), its estuary and in the marine environment. More than half of the smolts became anadromous migrants (52% in 2011 and 70% in 2012). The fish spent longer time in the estuary than in the marine environment and the results suggest that migratory behaviour of S. trutta smolts is not only restricted to be resident or anadrome–lacustrine, but that there is also an intermediary strategy of estuarine feeding. There were no differences in LF or mass between groups of smolts with different migration patterns. Return rates from the sea within the first 5 months after release were in both years 16%. Median progression rate in the river was 0·090 LF s−1 but decreased significantly as the smolts entered the estuary (0·015 LF s−1). The long residential time in the estuary may increase the risk of negative effects of anthropogenic activities in estuaries, such as harbours and industrial development, and special attention should be given to evaluate effects of such activitiesnb_NO
dc.language.isoengnb_NO
dc.publisherWileynb_NO
dc.subjectacoustic telemetry; compensatory hatchery programme; migratory behaviour; mortality; sea trout; strategynb_NO
dc.titleRiverine and near coastal migration performance of hatchery brown trout Salmo truttanb_NO
dc.typeJournal articlenb_NO
dc.typePeer revieweden_GB
dc.date.updated2014-06-29T10:41:09Z
dc.source.pagenumber586-596nb_NO
dc.source.volume85nb_NO
dc.source.journalJournal of Fish Biologynb_NO
dc.source.issue3nb_NO
dc.identifier.doi10.1111/jfb.12439
dc.identifier.cristin1131952
dc.description.localcodeThis is the peer reviewed version of the following article: Davidsen, J. G., Daverdin, M., Arnekleiv, J. V., Rønning, L., Sjursen, A. D. and Koksvik, J. I. (2014), Riverine and near coastal migration performance of hatchery brown trout Salmo trutta. Journal of Fish Biology, 85: 586–596. , which has been published in final form at DOI: 10.1111/jfb.12439 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archivingnb_NO


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