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dc.contributor.authorSistiaga, Manu
dc.contributor.authorHerrmann, Bent
dc.contributor.authorBrinkhof, Jesse
dc.contributor.authorLarsen, Roger B.
dc.contributor.authorSantos, Juan
dc.contributor.authorStepputtis, Daniel
dc.contributor.authorBrinkhof, Ilmar
dc.contributor.authorJacques, Nadine
dc.contributor.authorCerbule, Kristine
dc.contributor.authorPetetta, Andrea
dc.contributor.authorCuende, Elsa
dc.contributor.authorKvalvik, Liz Beate Kolstad
dc.date.accessioned2023-08-10T12:11:23Z
dc.date.available2023-08-10T12:11:23Z
dc.date.issued2023-02-21
dc.description.abstractShortening codend lastridge ropes can be an effective fishing gear modification to improve the size selection properties in diamond mesh codends. Lastridge ropes attached to codend selvedges withstand the longitudinal forces created by the catch building up and therefore, prevent the codend meshes from closing. However, the extent to which the lastridge ropes should be shortened to maximize the effect of this measure is unclear. Besides opening codend meshes, shortening lastridge ropes can also lead to net folding, which can potentially have negative consequences for size selectivity. In the present study, we tested the size selective properties of a 129 mm diamond mesh codend in three different configurations: 0 %, 15 % and 30 % shortened lastridge ropes. Selectivity data were collected for cod (<i>Gadus morhua</i>), haddock (<i>Melanogrammus aeglefinus</i>) and redfish <i>(Sebastes</i> spp.) in the Barents Sea gadoid bottom trawl fishery. Shortening the lastridge ropes by 15 % had a significant effect on the release efficiency of haddock between 35 and 50 cm, whereas to obtain a similar result for cod, the lastridge ropes had to be shortened by 30 %. However, the use of shortened lastridge ropes significantly increased the retention of fish below 35 cm for both species, especially when the lastridge ropes were shortened from 15 % to 30 %. The effect on redfish size selectivity was in general limited. Exploitation pattern indicators showed that there was no added benefit from shortening them further from 15 % to 30 % for any of the three species. This study concludes that, while shortening lastridge ropes can contribute to improved size selection of diamond mesh codends, reducing them beyond 15 % is not recommended because it can substantially increase the retention of undersized fish, probably due to net folding.en_US
dc.identifier.citationSistiaga, Herrmann, Brinkhof, Larsen, Santos, Stepputtis, Brinkhof, Jacques, Cerbule, Petetta, Cuende, Kvalvik. Is there a limit to the potential effects of shortening lastridge ropes on the size selectivity of diamond mesh codends?. Fisheries Research. 2023;262:106671:1-13en_US
dc.identifier.cristinIDFRIDAID 2134131
dc.identifier.doi10.1016/j.fishres.2023.106671
dc.identifier.issn0165-7836
dc.identifier.issn1872-6763
dc.identifier.urihttps://hdl.handle.net/10037/29857
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalFisheries Research
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleIs there a limit to the potential effects of shortening lastridge ropes on the size selectivity of diamond mesh codends?en_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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