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| Bdioui, M.; M'Rabet, R.. |
| Le présent travail concerne l’adaptation et l’essai d’un chalut pélagique japonais de très grandes mailles et à quatre faces égales dans les pêcheries tunisiennes. Le fil élémentaire composant les alèzes de filets est en Dyneema. Les essais de ce modèle de chalut, conçu pour un bateau d’une puissance motrice de 650 C.V, ont montré qu’il est adapté aux pêcheries de la région nord de la Tunisie et qu’il est efficace pour la capture des petits poissons pélagiques de grande profondeur notamment la sardine et l’anchois. Par ailleurs, les rendements de ce modèle de chalut sont importants grâce à ses ouvertures, horizontale et verticale, d’environ 35mètres. Les captures sont composées à plus de 99% d’espèces pélagiques. |
| Tipo: Journal Contribution |
Palavras-chave: Trawl nets; Gear research; Marine fisheries; Mesh selectivity; Pelagic fisheries; Trawlers; Pelagic fisheries. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4489 |
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| Ehrhardt, N.M.; Ercoli, R.; Garcia, J.C.; Bartozzetti, J.D.; Izzo, A.. |
| The hake, Merluccius hubbsi, fishery is the most important amongst the argentinean demersal fisheries. Fishery management schemes have been adopted to control high discard levels of undersized fish historically observed in the fishery. Controls have consissted in establishing closed areas to fishing and implementation of minimum mesh size in bottom trawls to allow escapement of fish less than 33 cm in length. Offical fishery regulations establish a 120 mm inside codend mesh size in all hake traws. This work reports on the dynamics of hake selection in bottom trawls as a function of the relative abundance of the resource as well as loading levels imposed on the fishing gear. The analyses include the response to selection by square mesh panels attached to... |
| Tipo: Journal Contribution |
Palavras-chave: Mesh selectivity; Trawl nets; Bottom trawls; Discards. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/1969 |
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| Ercoli, R.; Mituhasi, T.; Izzo, A.; García, J.C.; Bartozzetti, J.D.. |
| The Patagonian grenadier Macruronus magellanicus fishery reached the maximum exploitation in the argentine fishery in 1988 with a catch of 154,960 t, decreasing gradually in the current decade. Statistical data confirm this trend and consider a total catch of22,796,3 t for 1995. The regulations establish a minimum of 120 mm inside codend mesh size for demersal species in Argentine sea. Hoki,in relation to the fishing gear, shows a semipelagic behaviour, but no selectivity trials were made at the moment. The present report presents the selectivity results obtained with rough bottom trawl Engel net with a double braided PE twine codend and 120 mm mesh size.Except the codend, it is the gear normally used by INIDEP to evaluate demersal resources. The logistic... |
| Tipo: Journal Contribution |
Palavras-chave: Mesh selectivity; Bottom trawls; Gadoid fisheries. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/5785 |
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