Selectivity of commercial, larger mesh and square mesh trawl codends for deep water rose shrimp Parapenaeus longirostris (Lucas, 1846) in the Aegean Sea

Basit Öğe Kaydı
dc.contributor.authorKaykac, Hakan
dc.contributor.authorTokac, Adnan
dc.contributor.authorOzbilgin, Huseyin
dc.date.accessioned2019-10-27T20:50:05Z
dc.date.available2019-10-27T20:50:05Z
dc.date.issued2009
dc.departmentEge Üniversitesien_US
dc.description.abstractWe investigated the differences between size selectivity of a commercial codend (40 mm, diamond mesh - 40D), a larger mesh codend (48 mm diamond mesh - 48D), and a Square mesh codend (40 mill square mesh - 40S) for Parapenaeus longirostris in international waters of the Aegean Sea. Selectivity data were collected by using a covered codend method and analysed taking between-haul variation into account. The results indicate significant increases in L-50 values in relation to an increase in mesh size and when the square mesh is used in the commercial trawl codend. The results demonstrate that the commercially used codend (40D) is not selective enough for P. longirostris in terms of length at first maturity. Changing from a 40D to a 48D codend significantly improves selection, with an increase of about 15% in the L-50 values (carapace length 14.5 mm for 40D and 16.6 mm for 48D). Similarly, 40 mm square mesh, which has recently been legislated for EU Mediterranean waters, showed a 12.4% higher mean L-50 value (16.3 mm) than 40 mm diamond mesh for this species. However, despite these improvements, the 48D and 40S codends still need further improvements to obtain higher selectivity closer to the length at first maturity (20 mm carapace length).en_US
dc.identifier.doi10.3989/scimar.2009.73n3597
dc.identifier.endpage604en_US
dc.identifier.issn0214-8358
dc.identifier.issn1886-8134
dc.identifier.issn0214-8358en_US
dc.identifier.issn1886-8134en_US
dc.identifier.issue3en_US
dc.identifier.startpage597en_US
dc.identifier.urihttps://doi.org/10.3989/scimar.2009.73n3597
dc.identifier.urihttps://hdl.handle.net/11454/42948
dc.identifier.volume73en_US
dc.identifier.wosWOS:000269965600018en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherInst Ciencias Mar Barcelonaen_US
dc.relation.ispartofScientia Marinaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectParapenaeus longirostrisen_US
dc.subjectmesh sizeen_US
dc.subjectmesh shapeen_US
dc.subjectdiamond meshen_US
dc.subjectsquare meshen_US
dc.titleSelectivity of commercial, larger mesh and square mesh trawl codends for deep water rose shrimp Parapenaeus longirostris (Lucas, 1846) in the Aegean Seaen_US
dc.typeArticleen_US

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