SELECTIVITY OF 40 MM SQUARE- AND 90 degrees TURNED-MESH CODEND FOR THE DEEPWATER ROSE SHRIMP, PARAPENAEUS LONGIROSTRIS (CRUSTACEA), AND GREATER FORKBEARD, PHYCIS BLENNOIDES (ACTINOPTERYGII: GADIFORMES: PHYCIDAE), IN THE EASTERN MEDITERRANEAN

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dc.contributor.authorAydin, Celalettin
dc.contributor.authorTokac, Adnan
dc.date.accessioned2019-10-27T22:29:01Z
dc.date.available2019-10-27T22:29:01Z
dc.date.issued2015
dc.departmentEge Üniversitesien_US
dc.description.abstractBackground. Bottom trawling is an important fishing technique for catching demersal fish, and selectivity is one of the most important tools for fishery management. This study aimed to determine the selectivity of 40 mm square- (40S) and 90 degrees turned-mesh (40T90) codend for the deepwater rose shrimp, Parapenaeus longirostris, and greater forkbeard, Phycis blennoides (Brunnich, 1768). Material and methods. Fishing experiments were conducted on the international waters of the Aegean Sea by using a commercial vessel between 24 August and 13 September 2012. The hooped covered codend technique was employed for the estimated codend selectivity. The selectivity parameters were estimated by using CC 2000 software. Results. Nineteen successful hauls, 11 with 40S, and 8 with 40T90 codends, were performed. The mean L-50 values (50% retention length) of 40S and 40T90 were found to be a 15.5 +/- 0.1 mm and 14.8 +/- 0.1 mm carapace lengths for the rose shrimp, and 15.3 +/- 0.1 cm and 12.2 +/- 0.1 cm total lengths for the greater forkbeard, respectively. Conclusion. In conclusion, 165 square meshes in a codend circumference with 40 mm mesh sizes provided higher L-50 values than the 40 mm turned meshes, and 330 meshes around the codend circumference. Halving the number of meshes in the codend with larger turned mesh and different modifications should be investigated for further studies in order to appropriate the L-50 values.en_US
dc.description.sponsorshipScience and Technology Centre of the Ege University, Izmir, TurkeyEge University [2012/SUF/012]en_US
dc.description.sponsorshipThe author would like to thank Mr Ismail Oksuz, the skipper of a commercial trawler FV Hapuloglu and his crew for their assistance in collecting the data on board. The presently reported study was funded by the Science and Technology Centre of the Ege University, Izmir, Turkey (Project No. 2012/SUF/012).en_US
dc.identifier.doi10.3750/AIP2015.45.4.03
dc.identifier.endpage362en_US
dc.identifier.issn0137-1592
dc.identifier.issn1734-1515
dc.identifier.issn0137-1592en_US
dc.identifier.issn1734-1515en_US
dc.identifier.issue4en_US
dc.identifier.startpage353en_US
dc.identifier.urihttps://doi.org/10.3750/AIP2015.45.4.03
dc.identifier.urihttps://hdl.handle.net/11454/51026
dc.identifier.volume45en_US
dc.identifier.wosWOS:000368251100003en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherWydawnictwo Akad Rolniczej W Szczecinieen_US
dc.relation.ispartofActa Ichthyologica Et Piscatoriaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectbottom trawlen_US
dc.subjectresponsible fisheriesen_US
dc.subjectsize selectivityen_US
dc.subjectmesh typeen_US
dc.titleSELECTIVITY OF 40 MM SQUARE- AND 90 degrees TURNED-MESH CODEND FOR THE DEEPWATER ROSE SHRIMP, PARAPENAEUS LONGIROSTRIS (CRUSTACEA), AND GREATER FORKBEARD, PHYCIS BLENNOIDES (ACTINOPTERYGII: GADIFORMES: PHYCIDAE), IN THE EASTERN MEDITERRANEANen_US
dc.typeArticleen_US

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