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dc.contributor.authorFakıoğlu, Y.E.
dc.contributor.authorÖzbilgin, H.
dc.contributor.authorGökçe, G.
dc.contributor.authorHerrmann, Bent
dc.date.accessioned2023-02-28T08:38:10Z
dc.date.available2023-02-28T08:38:10Z
dc.date.issued2022-03-28
dc.description.abstractBycatch of rays and skates in towed fishing gears represents one of the major threats to these relatively slow-growing marine species. The objective of this study was to modify ground gear in a bottom trawl fishery to increase the escape of these species during towing without associated loss of target catch. Sea trials were carried out with a research vessel in Mersin Bay, North-eastern Mediterranean. Experimental ground gear was modified by cutting the rigging twine between the fishing line and the footrope in the central part of the ground gear. Capture of three unwanted bycatch species were estimated. The probability of capture of guitarfish (Rhinobatos sp.) and common stingray (Dasyatis pastinaca) was significantly reduced to 8% and 20% for guitarfish and stingray, respectively compared to standard ground gear. The results for spiny butterfly ray (Gymnura altavela) were inconclusive due to the wide confidence intervals. Further, the catch comparison results for five out of six target species investigated did not show significant reduction in catch efficiency when using experimental gear compared to the standard trawl. Only for common sole (Solea solea) the modified trawl had significantly lower catch efficiency than the standard trawl. We believe that this technical measure for reducing unwanted bycatch in bottom trawls has a potential to be adopted by the fishery due to being an efficient, low-cost measure which does not create additional challenges during handling of the gear.en_US
dc.descriptionAccepted manuscript version, licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0. </a>en_US
dc.identifier.citationFakıoğlu, Özbilgin, Gökçe, Herrmann. Effect of ground gear modification on bycatch of rays in mediterranean bottom trawl fishery. Ocean and Coastal Management. 2022;223:1-10en_US
dc.identifier.cristinIDFRIDAID 2019242
dc.identifier.doi10.1016/j.ocecoaman.2022.106134
dc.identifier.issn0964-5691
dc.identifier.issn1873-524X
dc.identifier.urihttps://hdl.handle.net/10037/28619
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalOcean and Coastal Management
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 Elsevieren_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleEffect of ground gear modification on bycatch of rays in mediterranean bottom trawl fisheryen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)