dc.contributor.author | Brinkhof, Jesse | |
dc.contributor.author | Grimaldo Vela, Eduardo Enrique | |
dc.contributor.author | Herrmann, Bent | |
dc.contributor.author | Pettersen, Hermann | |
dc.date.accessioned | 2022-10-10T06:48:32Z | |
dc.date.available | 2022-10-10T06:48:32Z | |
dc.date.created | 2022-10-03T09:59:54Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Ocean and Coastal Management. 2022, 229 1-9. | en_US |
dc.identifier.issn | 0964-5691 | |
dc.identifier.uri | https://hdl.handle.net/11250/3024874 | |
dc.description.abstract | Norway pout (Trisopterus esmarkii) is caught with large trawls with small meshed codends, inevitably causing the fishery to have large by-catch issues. To reduce the amount of by-catch, a rigid sorting grid was made compulsory in 2010. However, there is still a severe by-catch issue, as well as the loss of target species because of the grid. A possible cause might be clogging of the grid, which could be solved by increasing the grid area. Therefore, this study compared the size selectivity of by-catch species and target species in a double-trawl configuration in which one trawl was equipped with a standard grid (6.30 m2), and the other trawl was equipped with a grid that had a 50% larger surface area (9.45 m2). The results demonstrated that the size selectivity and catch efficiency of the target species were unaffected; neither was there any significant difference between the two grids in terms of wanted by-catch species [blue whiting (Micromesistius poutassou), horse mackerel (Trachurus trachurus), and greater argentine (Argentina silus)]. However, the larger grid caught significantly more unwanted by-catch species [haddock (Melanogrammus aeglefinus), whiting (Merlangius merlangus), and hake (Merluccius merluccius)]. Approximately one-third of the accumulated catches comprised the target species, one-third of wanted by-catch species, and one-third of unwanted by-catch species, demonstrating the by-catch challenges in this fishery. Simultaneously, none of the by-catch limits were exceeded. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | Mixed fishery | en_US |
dc.subject | Grid | en_US |
dc.subject | Selectivity | en_US |
dc.subject | Small-meshed trawls | en_US |
dc.subject | Norway pout | en_US |
dc.title | The effect of grid size on catch efficiency and by-catch in the demersal trawl fishery for Norway pout (Trisopterus esmarkii) | en_US |
dc.title.alternative | The effect of grid size on catch efficiency and by-catch in the demersal trawl fishery for Norway pout (Trisopterus esmarkii) | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2022 The Authors. Published by Elsevier Ltd. | en_US |
dc.source.pagenumber | 1-9 | en_US |
dc.source.volume | 229 | en_US |
dc.source.journal | Ocean and Coastal Management | en_US |
dc.identifier.doi | 10.1016/j.ocecoaman.2022.106333 | |
dc.identifier.cristin | 2057677 | |
dc.source.articlenumber | 106333 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |