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dc.contributor.authorBok, Tomris Deniz
dc.contributor.authorKahraman, Abdullah Ekrem
dc.contributor.authorGokturk, Didem
dc.date.accessioned2021-03-03T14:12:04Z
dc.date.available2021-03-03T14:12:04Z
dc.date.issued2011
dc.identifier.citationBok T. D. , Gokturk D., Kahraman A. E. , "Bycatch in 36 and 40 mm PA Turkish twin rigged beam trawl codends", AFRICAN JOURNAL OF BIOTECHNOLOGY, cilt.10, sa.37, ss.7294-7302, 2011
dc.identifier.issn1684-5315
dc.identifier.othervv_1032021
dc.identifier.otherav_384d87b3-5eec-4dd4-af23-f7f6cb2505c8
dc.identifier.urihttp://hdl.handle.net/20.500.12627/41928
dc.description.abstractThe Turkish twin rigged beam trawl which has two identical nets rigged side by side on the same beam targets mainly the Parapenaeus longirostris, although some bycatch fish species have also become target species. Thus, landings of the shrimp beam trawling fleet also include some commercially valuable fishes. Our study focused on the bycatch commercial species which are caught by the beam trawl fishery with nominal mesh sizes 36 and 40 mm PA (diamond) codend in the Sea of Marmara (Turkey) and also on the minimum landing size (MLS) established for Merluccius merluccius, Merlangius merlangus euxinus, Mullus surmuletus, Trachurus trachurus and Pomatomus saltatrix. Since there was no MLS value for Spicara smaris, the length at first maturity (LFM) was used for this species. Experiments were carried out onboard the commercial beam trawler. In 20 hauls, the average codend catch weight was 63.12 kg for 36 mm PA and 66.51 kg for 40 mm PA. On the other hand, for 36 mm PA, 83.5% of M. merluccius, 74.3% of M. merlangus euxinus, 29.7% of T. trachurus, 10.8% of P. saltatrix and 8.6% of M. surmuletus were below the MLS. For 40 mm PA, 88.9% of M. merlangus euxinus, 87.7% of M. merluccius, 42.5% of T. trachurus, 7.2% of P. saltatrix and 6.7% of M. surmuletus were below MLS. In addition, 7.5% of S. smaris were below length at first maturity (LFM) for 36 PA codends.
dc.language.isoeng
dc.subjectYaşam Bilimleri
dc.subjectBiyoteknoloji
dc.subjectTemel Bilimler
dc.subjectYaşam Bilimleri (LIFE)
dc.subjectMikrobiyoloji
dc.subjectBİYOTEKNOLOJİ VE UYGULAMALI MİKROBİYOLOJİ
dc.titleBycatch in 36 and 40 mm PA Turkish twin rigged beam trawl codends
dc.typeMakale
dc.relation.journalAFRICAN JOURNAL OF BIOTECHNOLOGY
dc.contributor.departmentİstanbul Üniversitesi , ,
dc.identifier.volume10
dc.identifier.issue37
dc.identifier.startpage7294
dc.identifier.endpage7302
dc.contributor.firstauthorID61331


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