Selectivity of PE and PA material codends for rose shrimp (Parapenaus longirostris) in Turkish twin rigged beam trawl fishery

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dc.contributor.authorDeval, Mehmet Cengiz
dc.contributor.authorBok, Tomris
dc.contributor.authorAtes, Celal
dc.contributor.authorOzbilgin, Hoseyin
dc.date.accessioned2019-10-27T19:17:11Z
dc.date.available2019-10-27T19:17:11Z
dc.date.issued2006
dc.departmentEge Üniversitesien_US
dc.description.abstractThis study investigated the differences in the selective properties of 32 turn nominal polyethylene (PE) and 32, 36, 40 and 56 mm, nominal polyamide (PA) codends in beam trawl fisheries targeting rose shrimp, Parapenaeus longirostris, in the Sea of Marmara, Turkey. Data were collected in spring 2005 onboard a commercial trawler, on commercial fishing grounds. Selectivity data were collected using the covered codend method in two twin beam trawls in every haul. Using this method, four selection curves could be obtained in one haul. Selectivity parameters were calculated by fitting a logistic function using maximum likelihood. The L-50 values of 32, 36 and 40 mm PA codends were found to be 9.1, 10.2 and 12.6 cm, respectively. Due to retention of only a few specimens, realistic selectivity parameters could not be calculated for the 56 mm PA codend. Mean L-50 decreased with a change in mesh material from PA to PE. The lowest L-50 (8.0 cm) was found for the 32 mm PE material codend. This study has shown that for rose shrimp the 32 mm PA diamond mesh codend is not appropriate for the first maturity size (FMS) of 10 cm for rose shrimp in the Turkish twin rigged beam trawl fishery. In addition, the PE netting material provides a significantly lower L-50 value than the PA netting material. (c) 2006 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.fishres.2006.05.007
dc.identifier.endpage79en_US
dc.identifier.issn0165-7836
dc.identifier.issn0165-7836en_US
dc.identifier.issue1en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage72en_US
dc.identifier.urihttps://doi.org/10.1016/j.fishres.2006.05.007
dc.identifier.urihttps://hdl.handle.net/11454/38321
dc.identifier.volume81en_US
dc.identifier.wosWOS:000240431400009en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofFisheries Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectbeam trawlen_US
dc.subjectselectivityen_US
dc.subjectParapenaus longirostrisen_US
dc.subjectmesh sizeen_US
dc.subjectnetting materialen_US
dc.subjectthe Sea of Marmaraen_US
dc.titleSelectivity of PE and PA material codends for rose shrimp (Parapenaus longirostris) in Turkish twin rigged beam trawl fisheryen_US
dc.typeArticleen_US

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