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dc.contributor.authorSistiaga, Manu
dc.contributor.authorJørgensen, Terje
dc.contributor.authorBrinkhof, Ilmar
dc.contributor.authorHerrmann, Bent
dc.contributor.authorBrinkhof, Jesse
dc.date.accessioned2023-08-25T08:24:19Z
dc.date.available2023-08-25T08:24:19Z
dc.date.issued2023-05-06
dc.description.abstractSea trials to test size selectivity equipment in trawls are often limited in time because they are costly, and the results can be influenced by multiple factors that are often overlooked. In the Barents Sea gadoid trawl fishery, the use of a size sorting grid in front of the codend is compulsory. The flexigrid, a netting section containing two flexible grids, is the most widely used grid section in this fishery. However, earlier selectivity studies with this device have shown inconclusive results. It has been speculated that the differences observed resulted from the difference in age and usage of the grid sections in the studies compared. To reveal whether potential changes in the device construction over time can lead to differences in size selection properties, we performed comparative fishing trials where we compared a brand new flexigrid section and a well-used flexigrid section used continuously by a commercial trawler for approximately four years. The results showed that the new flexigrid released significantly more cod below ∼60 cm than the used flexigrid. However, when the grids were fished with a subsequent diamond mesh codend, there was no difference in the overall selectivity of the two gears, meaning that the size selectivity in the codend compensates for the potential reduction in selectivity performance of the grids. This study shows the importance of considering the age and earlier use of size selection devices like sorting grids before they are compared with other devices, as their size selection properties can change significantly over time and with use.en_US
dc.identifier.citationSistiaga, Jørgensen, Brinkhof, Herrmann, Brinkhof. Used vs. new: Does it have consequences for the performance of fishing gear?. Aquaculture and Fisheries. 2023en_US
dc.identifier.cristinIDFRIDAID 2153093
dc.identifier.doi10.1016/j.aaf.2023.03.003
dc.identifier.issn2468-550X
dc.identifier.urihttps://hdl.handle.net/10037/30411
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalAquaculture and Fisheries
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)en_US
dc.titleUsed vs. new: Does it have consequences for the performance of fishing gear?en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)