La pesquería de besugo (Pagrus pagrus). Análisis de las capturas, esfuerzo nominal y estructura de los desembarques en 2011
Red porgy (Pagrus pagrus) fishery. Analysis of catches, nominal effort and landings structure in 2011. A descriptive analysis of red porgy (Pagrus pagrus) fishery within the Buenos Aires Coastal Ecosystem (BCE) and the Argentine continental shelf, between 34° S and 42° S, during 2011 was performed. The catches landed, of a total of 3,627 t, performed in a direct and incidental way by an heterogeneous fleet of 149 vessels belonging to five strata (Ia, Ib, Ic, IIa and IIb) in 1,527 fishing trips represented a 36.7% decrease as regards 2010. The spatiotemporal analysis allowed to determine that the highest yields of the species were obtained close to 50 m depth, that coincides with the highest surface temperatures in the area, that decrease in a northeast-southwest direction. A steady increase in the participation of the trawler fleet as regards the one using traps was observed. This study allowed to identify, besides, variations in the directionality of an important part of the fleet, that reduced the number of “directed” trips. The length structure (TL) landed reflected differences in the extractive methods that, in the case of non-selective gears (trawls), meant a lower TLmean and a higher percentage of juveniles as compared to those observed in the fleet that used traps. Landings showed a large presence of 2 and 3 year old individuals and a decrease of 4 year old specimens with respect to the participation registered in 2010.
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| Format: | Journal Contribution biblioteca |
| Language: | Spanish / Castilian |
| Published: |
2013
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| Subjects: | Catch/effort, Landing statistics, Population structure, Coastal fisheries, |
| Online Access: | http://hdl.handle.net/1834/5509 |
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