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	Provedor de dados OceanDocs (3) Autor López, F. (3) Perrotta, R.G. (3) Macchi, G.J. (2) Akselman, R. (1) Boccanfuso, J. (1) Castro Machado, F. (1) Garciarena, A.D. (1) Guerrero, R.A. (1) Izzo, A. (1) Madirolas, A. (1) Sánchez, M.F. (1) Tringali, L.S. (1) Viñas, M.D. (1) Mais... Palavra-chave Http://aims.fao.org/aos/agrovoc/c_6115 (3) Population structure (3) Abundance (1) Biological sampling (1) Biomass (1) Catch statistics (1) Catch/effort (1) Commercial fishing (1) Costs (1) Echo surveys (1) Environmental conditions (1) Fishing grounds (1) Http://aims.fao.org/aos/agrovoc/c_15490 (1) Http://aims.fao.org/aos/agrovoc/c_1922 (1) Http://aims.fao.org/aos/agrovoc/c_2947 (1) Http://aims.fao.org/aos/agrovoc/c_32980 (1) Http://aims.fao.org/aos/agrovoc/c_926 (1) Mackerel fisheries (1) Size distribution (1) Zooplankton (1) Mais... Tipo do documento Journal Contribution (3) Ano 2002 (1) 2000 (1) 1999 (1) País Belgium (3) Idioma Espanhol (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Aspectos económicos de la pesquería de caballa (Scomber japonicus) y muestreo de desembarque en el puerto de Mar del Plata. OceanDocs Perrotta, R.G.; Tringali, L.S.; Izzo, A.; Boccanfuso, J.; López, F.; Macchi, G.J.. Movements pattern records of the Mar del Plata inshore fishing fleet during the 1997/98 and 1998/99 chub mackerel fishing seasons (October-January) allowed to observe that there is coincidence between the decrease of the 1983-1997 catches with respect to years previous to the 1975/76 "critical season" and a reduction of the inshore fleet fishing grounds which modifies accessibility of the fleet to the chub mackerel schools. Biostatistical and gonadal development results obtained in the Mar del Plata area (i.e., presence of adults during almost the whole fishing season which overlaps with the spawning season) do not differ significantly from those obtained during previous fishing seasons. As recommended in previous papers, chub mackerel fishing operations... Tipo: Journal Contribution Palavras-chave: Catch statistics; Biological sampling; Fishing grounds; Population structure; Costs; Population structure; Fishing grounds; Costs; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_2947; Http://aims.fao.org/aos/agrovoc/c_1922. Ano: 2000 URL: http://hdl.handle.net/1834/2542 Informe sobre el muestreo de desembarque de anchoíta (Engraulis anchoita) y caballa (Scomber japonicus) en el puerto de Mar del Plata: período septiembre 1999-enero 2000, con algunos comentarios sobre el manejo de estos recursos. OceanDocs Garciarena, A.D.; Perrotta, R.G.; López, F.. The chub mackerel Scomber japonicus and anchovy Engraulis anchoita commercial landings at the Mar del Plata (Buenos Aires prov., Argentina) seaport during the September 1999-January 2000 period are studied. A total of 14 chub mackerel samples were taken for total length measurements exclusively and 5 anchovy sub-samples and 1 chub mackerel sub-sample were analyzed to record individual data total length, weight, sex, sexual stage, age from otoliths readings . Most of the fish caught for both species were adults and only a small fraction of chub mackerel juveniles was found in December 1999. Length-at-fifty-percent-maturity was calculated, length-weight and length-age relationships were fitted and length growth parameters estimated. Sea surface temperature... Tipo: Journal Contribution Palavras-chave: Commercial fishing; Population structure; Catch/effort; Size distribution; Mackerel fisheries; Population structure; Http://aims.fao.org/aos/agrovoc/c_6115. Ano: 2002 URL: http://hdl.handle.net/1834/2545 La caballa (Scomber japonicus) y las condiciones ambientales en el area bonaerense de El Rincón (39°- 40°30' S), agosto 1996. OceanDocs Perrotta, R.G.; Madirolas, A.; Viñas, M.D.; Akselman, R.; Guerrero, R.A.; Sánchez, M.F.; López, F.; Castro Machado, F.; Macchi, G.J.. In August 1996 acoustic methods were employed to estimate mackerel (Scomber japonicus) abundance in the Buenos Aires, Argentina shelf area of "El Rincón" (4,287 mn2), located between 39°- 40° 30' S. Results showed a biomass estimate of 77,260 t. ASIMRAD EK-500 equipment operated with a 38 KHz split-beam transducer was used. Midwater fishing trawls were employed to identify echotraces and to collect mackerel samples.Trawls 4 and 5 were the most successful. Samples included only adult fish (310-470 mm Lt and ages ranging 2-11). Length and weight growth parameters and mortality rates were estimated. Analysis of the stomach contents revealed that mackerel was feeding exclusively on zooplankters over 2 mmlength. The analysis of the characteristics (dimensions... Tipo: Journal Contribution Palavras-chave: Abundance; Biomass; Population structure; Zooplankton; Environmental conditions; Echo surveys; Biomass; Population structure; Zooplankton; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_32980. Ano: 1999 URL: http://hdl.handle.net/1834/2529 Registros recuperados: 3 Primeira ... 1 ... Última

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