Vis enkel innførsel

dc.contributor.authorChittenden, Cedar
dc.contributor.authorRikardsen, Audun H.
dc.contributor.authorSkilbrei, Ove Tommy
dc.contributor.authorDavidsen, Jan Grimsrud
dc.contributor.authorHalttunen, Elina
dc.contributor.authorSkardhamar, Jofrid
dc.contributor.authorMcKinley, R. Scott
dc.date.accessioned2020-01-22T10:13:15Z
dc.date.available2020-01-22T10:13:15Z
dc.date.created2011-08-30T14:24:04Z
dc.date.issued2011
dc.identifier.citationAquaculture Environment Interactions. 2011, 1 (3), 215-224.nb_NO
dc.identifier.issn1869-215X
dc.identifier.urihttp://hdl.handle.net/11250/2637435
dc.description.abstractThe search for effective strategies to prevent and mitigate accidental releases of aquaculture fishes is on-going. To test a new recapture strategy and evaluate the individual dispersal behaviour of escaped farmed Atlantic salmon Salmo salar L. at the northern limit of its range, 39 adult salmon (mean ± SD fork length and weight: 85.5 ± 5.0 cm and 7.4 ± 1.4 kg, respectively) were implanted with depth-sensing acoustic tags and released in a north Norwegian fjord during the spring of 2007. The fish were released from 2 aquaculture sites in the Altafjord system and tracked using both mobile and fixed receivers. The coastal marine bag-net fishery, in combination with in-river angling, was tested as a potential recapture strategy. Immediately following the simulated escape event, the fish dove to near-bottom depths, subsequently returning to surface levels within the following days. The fish dispersed rapidly (9.5 ± 19.2 km d–1), traveling outward to coastal waters along the edges of the fjord. The bag-net fishers and anglers recaptured 79% of the escaped fish within 1 mo post-release, 90% of which were from bag nets. While most of the fish left the fjord, 7 tagged fish (18%) entered the Alta River estuary (3 of which later migrated up the Alta River), and 1 returned to the Altafjord the following year, presumably to spawn. The results showed that recapture efforts need to be immediate and widespread to mitigate farm-escape events. Coastal bag nets were effective at recapturing escaped farmed salmon, compared to previously tested methods, and would be especially useful in areas where gill-netting is not permitted.nb_NO
dc.language.isoengnb_NO
dc.titleAn effective method for the recapture of escaped farmed salmonnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber215-224nb_NO
dc.source.volume1nb_NO
dc.source.journalAquaculture Environment Interactionsnb_NO
dc.source.issue3nb_NO
dc.identifier.doi10.3354/aei00021
dc.identifier.cristin835691
cristin.unitcode7431,23,0,0
cristin.unitcode7431,0,0,0
cristin.unitnamePopulasjonsgenetikk
cristin.unitnameHavforskningsinstituttet
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel