Browsing Brage IMR by Author "Grimaldo, Eduardo"
Now showing items 1-9 of 9
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Are rigid sorting devices necessary to control size selectivity in demersal trawl fisheries?
Herrmann, Bent; Bak-Jensen, Zita; Sistiaga, Manu; Brinkhof, Jesse Vallevik; Larsen, Roger Bertram; Grimaldo, Eduardo; Cerbule, Kristine; Kostak, Enis Noyan; Eighani, Morteza (Peer reviewed; Journal article, 2024)Diamond mesh codends are the most common size selectivity devices in trawls for releasing bycatch and undersized individuals. However, codend selectivity can vary due to the flexibility of the netting meshes, making ... -
Bycatch reduction in the deep-water shrimp (Pandalus borealis) trawl fishery with a large mesh top panel
Cerbule, Kristine; Jacques, Nadine; Pettersen, Hermann; Ingólfsson, Ólafur Arnar; Herrmann, Bent; Grimaldo, Eduardo; Larsen, Roger B.; Brinkhof, Jesse; Sistiaga, Manu; Lilleng, Dagfinn; Brčić, Jure (Peer reviewed; Journal article, 2021)In the Northeast Atlantic deep-water shrimp (Pandalus borealis) trawl fishery, the bycatch of juvenile fish and shrimp represents a problem. This study evaluated if inserting a 200 mm mesh size top-panel in the last three ... -
Exploring Growth Patterns of Maurolicus muelleri across Three Northeast Atlantic Regions
Alvarez, Paula; Aldanondo, Naroa; Wieczorek, Alina M.; Cariou, Thibault; Boyra, Guillermo; Grimaldo, Eduardo; Melle, Webjørn Raunsgård; Klevjer, Thor A. (Peer reviewed; Journal article, 2024)Maurolicus muelleri is an important component of mesopelagic ecosystems; nevertheless, we possess only limited knowledge about its biological features. We collected samples of M. muelleri from six scientific surveys between ... -
Forsøk med kvadratmaskepanel for artsseleksjon i vassild-trål
Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Ingolfsson, Olafur; Sørheim, Egil (Research report, 2016)Trålfiske etter vassild er et relativt rent fiskeri med nokså lite bifangst, men det er likevel ønskelig å redusere bifangsten av bl.a. hyse og kolmule ytterligere. Denne rapporten beskriver forsøk der en ekstra forlengelse ... -
Forsøk med kvadratmaskepanel for artsseleksjon i vassild-trål. Faktaark.
Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Ingolfsson, Olafur; Sørheim, Egil (Research report, 2016)I det Norske fisket etter vassild (Argentina silus) er fartøykvotene relativt små og en lønnsom avvikling av fisket forutsetter at kvantumet tas på kortest mulig tid. Tauingene i fiskeriet er lange og dette skaper risiko ... -
Ghost fishing efficiency by lost, abandoned or discarded pots in snow crab (Chionoecetes opilio) fishery
Cerbule, Kristine; Herrmann, Bent; Grimaldo, Eduardo; Brinkhof, Jesse; Sistiaga, Manu; Larsen, Roger B.; Bak-Jensen, Zita (Peer reviewed; Journal article, 2023)Marine pollution by lost, abandoned or otherwise discarded fishing gear (ALDFG) often has negative impact on the ecosystem through plastic pollution and continuous capture of marine animals, so-called “ghost fishing”. ALDFG ... -
Observing fish behavior in towed fishing gear—is there an influence of artificial light?
Brinkhof, Jesse Vallevik; Sistiaga, Manu; Herrmann, Bent; Karlsen, Junita Diana; Grimaldo, Eduardo; Jacques, Nadine Louise; Bak-Jensen, Zita (Peer reviewed; Journal article, 2024)Fish behavior is important to consider when developing selective fishing gear. In studies designed to investigate the size selective properties of towed fishing gears such as trawls, fish behavior is mainly documented by ... -
Potential for codends with shortened lastridge ropes to replace mandated selection devices in demersal trawl fisheries
Sistiaga, Manu; Brinkhof, Jesse; Herrmann, Bent; Larsen, Roger B.; Grimaldo, Eduardo; Cerbule, Kristine; Brinkhof, Ilmar; Jørgensen, Terje (Peer reviewed; Journal article, 2021)In many trawl fisheries, codend size selectivity is supplemented by adding selection devices to the gear. In the Barents Sea gadoid fishery, combining diamond mesh codends with sorting grids is compulsory. However, the use ... -
Seleksjon i 4-panels enkeltristseksjon med- og uten løftepanel. Rapport fra fullskalaforsøk gjennomført ombord på tråleren "Ramoen" i perioden 28.oktober - 10.november 2013
Grimaldo, Eduardo; Lilleng, Dagfinn; Jørgensen, Terje; Sistiaga, Manu Berrondo; Herrmann, Bent (Research report, 2014)Resultatene fra toktet viste at løftepanelet foran sorteringsristen hadde en betydelig effekt på parameteren Cgrid, dvs. sannsynligheten for at en fisk kommer i kontakt med rista, og dermed på seleksjonen av torsk. Forskjellen ...