Vis enkel innførsel

dc.contributor.authorKrafft, Bjørn Arne
dc.contributor.authorKrag, Ludvig Ahm
dc.contributor.authorEngås, Arill
dc.contributor.authorNordrum, Sigve
dc.contributor.authorBruheim, Yngve
dc.contributor.authorHerrmann, Bent
dc.date.accessioned2016-09-19T11:16:04Z
dc.date.accessioned2016-09-21T12:59:11Z
dc.date.available2016-09-19T11:16:04Z
dc.date.available2016-09-21T12:59:11Z
dc.date.issued2016-09-13
dc.identifier.citationKrafft BA, Krag LA, Engås A, Nordrum S, Bruheim I, Herrmann B (2016) Quantifying the Escape Mortality of Trawl Caught Antarctic Krill (Euphausia superba). PLoS ONE 11(9): e0162311. doi:10.1371/journal.pone.0162311nb_NO
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11250/2409367
dc.description-nb_NO
dc.description.abstractAntarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels of which are expected to increase. However, many of the length classes of krill can escape through commonly used commercial trawl mesh sizes. A vital component of the overall management of a fishery is to estimate the total fishing mortalityand quantify the mortality rate of individuals that escape from fishing gear. The methods for determining fishing mortality in krill are still poorly developed. We used a covered codend sampling technique followed by onboard observations made in holding tanks to monitor mortality rates of escaped krill. Haul duration, hydrological conditions, maximum fishing depth and catch composition all had no significant effect on mortality of krill escaping 16 mmmesh size nets, nor was any further mortality associated with the holding tank conditions. A non-parametric Kaplan-Meier analysis was used to model the relationship between mortality rates of escapees and time. There was a weak tendency, though not significant, for smaller individuals to suffer higher mortality than larger individuals. The mortality of krill escaping the trawl nets in our study was 4.4 ± 4.4%, suggesting that krill are fairly tolerant of the capture-and-escape process in trawls.nb_NO
dc.language.isoengnb_NO
dc.publisherPublic Library of Sciencenb_NO
dc.rightsNavngivelse 3.0 Norge*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/no/*
dc.titleQuantifying the Escape Mortality of Trawl Caught Antarctic Krill (Euphausia superba)nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.date.updated2016-09-19T11:16:04Z
dc.source.volume11nb_NO
dc.source.journalPLoS ONEnb_NO
dc.source.issue9nb_NO
dc.identifier.doi10.1371/journal.pone.0162311
dc.identifier.cristin1382671
dc.relation.projectNorges forskningsråd: 243619nb_NO


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Navngivelse 3.0 Norge
Med mindre annet er angitt, så er denne innførselen lisensiert som Navngivelse 3.0 Norge