Bluefin tuna (Thunnus thynnus) fishery in the Bay of Biscay. Evolution of 5+ group since 1970
Curricán (troll line) and “chapa” (silver plated spoon) were the gears used in the Bay of Biscay bluefin tuna fishery up until the middle of the twentieth century, when the first experiments with baitboat were made. The introduction of this new fishing system was a very important development in the...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2009 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/326771 |
| Acceso en línea: | http://hdl.handle.net/10261/326771 |
| Access Level: | acceso abierto |
| Palabra clave: | Pesquerías Centro Oceanográfico de Santander |
| Sumario: | Curricán (troll line) and “chapa” (silver plated spoon) were the gears used in the Bay of Biscay bluefin tuna fishery up until the middle of the twentieth century, when the first experiments with baitboat were made. The introduction of this new fishing system was a very important development in the region. The fishery is mainly made up of juveniles (<30 kg), but there was a constant presence of adults (group 5+) on the trophic migration towards northern European waters in the past. From observations on board fishing vessels at the beginning of the seventies, the importance in this fishery of age 5+ fish groups is confirmed; but since then this group has practically disappeared from the fishery. The current length composition reveals the absolute dominance of juveniles. |
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