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dc.contributor.authorGrimaldo, Eduardo
dc.contributor.authorHerrmann, Bent
dc.contributor.authorJacques, Nadine
dc.contributor.authorSu, Biao
dc.contributor.authorVollstad, Jørgen
dc.contributor.authorSu, Biao
dc.date.accessioned2020-09-29T10:36:54Z
dc.date.available2020-09-29T10:36:54Z
dc.date.issued2020-09-24
dc.description.abstractGillnets made of the biodegradable resin polybutylene succinate co-adipate-co-terephthalate were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon polyamide (PA) gillnets. Both types of gillnets were made of 0.55 mm Ø monofilaments. However, since the biodegradable nets are weaker than nylon PA nets when using the same monofilament diameter, we also used biodegradable nets made of 0.60 mm Ø monofilament that had a similar tensile strength to the 0.55 mm Ø nylon PA nets. The relative catch efficiency of the different gillnet types was evaluated over the 2018 autumn fishing season for saithe and cod in northern Norway. For cod, both biodegradable gillnets (0.55 and 0.60 mm) had a significantly lower catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 62.38% (CI: 50.55–74.04) and 54.96% (CI: 35.42–73.52) compared with the nylon PA net, respectively. Similarly for saithe, both biodegradable gillnets (0.55 and 0.60 mm) had a lower estimated catch efficiency compared to the traditional nylon PA net (0.55 mm) with estimated catch efficiencies of 83.40% (71.34–94.86) and 83.87% (66.36–104.92), compared with the nylon PA net, respectively. Tensile strength does not explain the differences in catch efficiency between the two gillnet types, since increasing the twine diameter of the biodegradable gillnets (to match the strength of nylon PA gillnets) did not yield similar catch efficiencies. However, the elasticity and stiffness of the materials may be responsible for the differences in catch efficiency between the nylon PA and biodegradable gillnets.en_US
dc.identifier.citationGrimaldo Ed, Herrmann B, Jacques N, Su B, Vollstad J. Effect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnets. PLOS ONE. 2020en_US
dc.identifier.cristinIDFRIDAID 1833275
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0234224
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/10037/19502
dc.language.isoengen_US
dc.publisherPublic Library of Scienceen_US
dc.relation.journalPLOS ONE
dc.relation.projectIDRFF Nord-Norge: 282512en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920en_US
dc.subjectVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920en_US
dc.titleEffect of mechanical properties of monofilament twines on the catch efficiency of biodegradable gillnetsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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