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dc.contributor.authorSistiaga, Manu Berrondo
dc.contributor.authorHerrmann, Bent
dc.contributor.authorLarsen, Roger B.
dc.contributor.authorBrinkhof, Jesse
dc.date.accessioned2019-10-15T13:43:40Z
dc.date.available2019-10-15T13:43:40Z
dc.date.issued2019-09-12
dc.description.abstractShrimp trawlers in the Barents Sea use a Nordmøre sorting grid ahead of a small-mesh codend to avoid bycatch while catching shrimps efficiently. However, small fish can still pass through the grid to enter the codend, which increases their risk of being retained. In this study, we quantified the selectivity of a standard Nordmøre grid used together with one of two different codend designs, namely a diamond mesh codend with square mesh panels and a codend with a square mesh sorting cone section, for deep-water shrimp (<i>Pandalus borealis</i>), redfish (<i>Sebastes</i> spp.), and American plaice (<i>Hippoglossoides platessoides</i>). For the first time, the selective properties of these two alternative designs were estimated and compared to those of a Nordmøre grid used together with a 35-mm diamond mesh codend, which is the compulsory gear used in the fishery today. With this traditional codend, the size selectivity of both bycatch species showed the expected characteristic bell-shaped size selection pattern, with low retention probability of very small fish and bigger fish but With high retention probability of certain sizes of juveniles. Using the square mesh sorting cone significantly reduced the maximum retention risk of redfish. The maximum retention with the diamond mesh codend with square mesh panels was estimated to be 14% lower than that of the traditional codend, but the difference was not statistically significant. The two alternative codend designs did not result in any significant reduction in bycatch of American plaice.en_US
dc.descriptionSource at <a href=https://doi.org/10.1371/journal.pone.0222391>https://doi.org/10.1371/journal.pone.0222391. </a>en_US
dc.identifier.citationSistiaga, M., Herrmann, B., Larsen, R.B. & Brinkhof, J. (2019). Quantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre grid. <i>PLOS ONE, 14</i>(9): e0222391. https://doi.org/10.1371/journal.pone.0222391en_US
dc.identifier.cristinIDFRIDAID 1734070
dc.identifier.doi10.1371/journal.pone.0222391
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10037/16404
dc.language.isoengen_US
dc.publisherPublic Library of Scienceen_US
dc.relation.journalPLOS ONE
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920en_US
dc.subjectVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920en_US
dc.titleQuantification of bell-shaped size selectivity in shrimp trawl fisheries using square mesh panels and a sorting cone after a Nordmøre griden_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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