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Registros recuperados: 87
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Global habitat preferences of commercially valuable tuna ArchiMer
Arrizabalaga, Haritz; Dufour, Florence; Kell, Laurence; Merino, Gorka; Ibaibarriaga, Leire; Chust, Guillem; Irigoien, Xabier; Santiago, Jose Luis; Murua, Hilario; Fraile, Igaratza; Chifflet, Marina; Goikoetxea, Nerea; Sagarminaga, Yolanda; Aumont, Olivier; Bopp, Laurent; Herrera, Miguel; Fromentin, Jean-marc; Bonhomeau, Sylvain.
In spite of its pivotal role in future implementations of the Ecosystem Approach to Fisheries Management, current knowledge about tuna habitat preferences remains fragmented and heterogeneous, because it relies mainly on regional or local studies that have used a variety of approaches making them difficult to combine. Therefore in this study we analyse data from six tuna species in the Pacific, Atlantic and Indian Oceans in order to provide a global, comparative perspective of habitat preferences. These data are longline catch per unit effort from 1958 to2007 for albacore, Atlantic bluefin, southern bluefin, bigeye, yellowfin and skipjack tunas. Both quotient analysis and Generalized Additive Models were used to determine habitat preference with respect to...
Tipo: Text Palavras-chave: Habitat; Tuna fisheries; Catch/effort; Environmental conditions; Quotient analysis; Generalised Additive Models; Ecosystem Approach to Fisheries Management.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00201/31190/29589.pdf
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Statistics of the European and associated purse seine and baitboat fleets, in the Atlantic Ocean (1991-2017) ArchiMer
Pascual-alayon, P; Floch, Laurent; N'Gom, F; Dewals, P; Irie, D; Amatcha, Ah; Amande, M-j.
The document presents an overall summary of the fishing activities of the European and assimilated purse seine and bait boat fleets operating in the eastern Atlantic Ocean over the period 1991-2017. We describe the annual changes in fleet technical characteristics (carrying capacity, size), fishing effort (fishing and searching days), extent of fishing grounds, catches and nominal Catch per Unit Effort by species, as well as the average individual weight by species. Maps are also presented indicating the fishing effort distribution in the Atlantic, as well as the spatio-temporal distribution of European and assimilated purse seine catches in 2017 compared to previous years (2010-2016).
Tipo: Text Palavras-chave: Tuna fishery; Yellowfin; Skipjack; Purse seiners; Catch/effort; CPUE; Species composition; Size composition.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00490/60190/63533.pdf
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Peche de l'anchois (Engraulis encrasicholus ) dans le golfe de Gascogne et sur le littoral atlantique de Galice depuis 1920. Variations quantitatives. ArchiMer
Junquera, Susana.
Using the fishing records from the most relevant ports of the Cantabrian and Galician coasts, th history of the anchovy (Engraulis encrasicholus ) fishery in this area is reconstituted. The crisis observed and the variations in the fishing areas throughout the time are analyzed. An estimation of the age classes composition in the catches founded on commercial classification data can be made. The hypothesis of existence of a core population in the Southern part of the Bay of Biscay is presented and that only under certain advantageous condition the expansion of this species throughout all the Cantabrian Sea was possible.
Tipo: Text Palavras-chave: Pisces; Age composition; Population dynamics; Catch/effort; Fishery statistics.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/publication-1795.pdf
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Evaluación de corvina rubia (Micropogonias furnieri) en el área del Río de la Plata y Zona Común de Pesca argentino-uruguaya por medio de un modelo de dinámica de biomasa OceanDocs
Carozza, C.R.; Hernandez, D.R.; Perrotta, R.G..
Whitemouth croaker (Micropogonias furnieri)has a broad distribution along the Atlantic coast of the Americas, from Mexico to the south of the Province of Buenos Aires, Argentina. At the southern end of distribution, Argentina and Uruguay catch the species with different commercial fleet types bay or creek, coastal and off-shore and modalities of bottom trawling with doors and paired trawling. Maximum catches of both countries, that reached 60,000 t, were registered between 1995 and 1997. After that period a remarkable decrease was observed, specially in Argentina where catches remained at around 6,000 t over a total of 30,000 t for both countries. The commercial fleet was divided in three categories and the total area of study in three subareas: El Salado,...
Tipo: Journal Contribution Palavras-chave: Stock assessment; Catch/effort; Risks; Biomass; Depleted stocks; Mathematical models; Coastal fisheries; Commercial fishing; Stock assessment; Biomass; Mathematical models; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2004 URL: http://hdl.handle.net/1834/1503
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Una aplicación de los estudios ambientales para orientar la pesqueria de la caballa Scomber japonicus en Mar del Plata OceanDocs
Perrotta, R.G.; Pertierra, J.P.; Viñas, M.D.; Macchi, G.J.; Tringali, L.S..
Both mackerel mean biomass and mean fishing effort in Buenos Aires (Argentina) shelf during the period 1990-91/1994-95 were estimated. Those values were 85,792 t and 42,051 minutes, respectively. However, the best economic profit from the fishery (about $15,390,036)($1=U$S1) was estimated to take place at 28,000 minutes. It was observed a waste in fishing effort of the commercial fleet related with sea surface temperatures of 19°C or more. Moreover, adult mackerel find better trophic conditions on the continental shelf (depth 50m), while larvae originated from massive spawning in late November-early December, i.e., during the main fishing season, find their optimum at lower depths. Mackerel shoals enter and leave fishing grounds in a counterclockwise way...
Tipo: Journal Contribution Palavras-chave: Mackerel fisheries; Biomass; Catch/effort; Environmental conditions; Economic models; Commercial fishing; Biomass; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1998 URL: http://hdl.handle.net/1834/2465
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Seychelles artisanal fisheries statistics for 1986 OceanDocs
De Moussac, G..
A report of the fishery statistics for 1986 with the different type of vessels and fishing methods used.
Tipo: Report Palavras-chave: SEYCHELES; Artisanal fishing; Catch composition; Fishery statistics; Catch/effort; Fish catch statistics; Catch composition; Artisanal fisheries.
Ano: 1987 URL: http://hdl.handle.net/1834/1314
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Caracterización del proceso de descarte de merluza (Merluccius hubbsi) en la flota de buques congeladores y factorías. Resultados preliminares a partir de los datos recolectados por observadores del INIDEP en seis mareas realizadas entre agosto y diciembre de 1995. OceanDocs
Cañete, G.R.; Dato, C.V.; Villarino, M.F..
Pursuant to SAGyP resolution No. 814/93, during August-December 1995, six INIDEP Fishery Observers trips on board of processing vessels of the Argentine fleet were carried out. They represented 256 navigation days, 232 effective fishing days, 725 fishing trawls and 2,245 trawling hours. Data measured on board were compared to those reported in the fishing log corresponding to the same cruise and submitted to the DNPyA by the Skipper. Catches observed and reported differ by 3985,7 t (28.2. ), with a maximum difference of 1,200 t in a single cruise. In the case of trawling hours, an important fluctuation of values was observed and, in two cases, the number of hours declared exceeded those actually performed (111 and 72). In the other four cruises, between 3...
Tipo: Journal Contribution Palavras-chave: Factory ships; Fishery surveys; Research programmes; By catch; Catch/effort; Fish catch statistics; Gadoid fisheries; Factory ships; Http://aims.fao.org/aos/agrovoc/c_10732.
Ano: 2000 URL: http://hdl.handle.net/1834/2535
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Situación actual y perspectivas del recurso Macarela (Scomber japonicus) en Ecuador OceanDocs
Santos, M.; González, N..
Los marcados cambios en la disponibilidad de macarela (Scomber japonicus) en aguas ecuatorianas debido a su migración, se relacionan probablemente con las modificaciones en el medio ambiente, que determinan las condiciones óptimas para la alimentación, reproduccion y sobrevivencia larval (French y Men, 1983). En general, las capturas de Macarela presentan una clara estacionalidad con dos periodos de máximos desembarques: enero-marzo y agosto-octubre. Entre los años 1982 y 1991 las capturas alcanzaron un máximo de 590000 t (1982) y un mínimo de 84000 t (1991), con un promedio anual de 262000 t. Las capturas anuales en el período analizado (1982-91) muestra un contínuo descenso, caracterizado por escasos volúmenes obtenidos durante los eventos ”El Niño” (EN)...
Tipo: Journal Contribution Palavras-chave: Pelagic fisheries; Fishing effort; Fishery resources; Catch/effort; Pelagic fisheries; Fishing effort; Fishery resources.
Ano: 1992 URL: http://hdl.handle.net/1834/5702
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Las pesquerías artesanales en la costa del Ecuador durante 1992 OceanDocs
Villón, C.; Balladares, M..
En 1992 fueron visitados los puertos de Esmeraldas, San Mateo, Manta, Anconcito, Sta. Rosa, Engabao, Playas y Puerto Bolívar, obteníendose información de la actividad pesquera artesanal mediante un sistema de entrevistas aplicado a 2000 embarcaciones, las que en conjunto forman la flota operativa de los ocho puertos antes mencionados. El desembarque total acumulado durante 1992 se estimó en 38632,8 t, fluctuando entre 897 t en Playas y 9006 t en Anconcito. Este desembarque total acumulado fue superior al realizado durante los años 1990 y 1991. El esfuerzo pesquero se mantuvo casi constante en los puertos visitados durante 1992, sin embargo el número de botes activos registrados al día del muestreo presentó una variación significativa.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Artisanal fishing; Harbours; Harbours; Http://aims.fao.org/aos/agrovoc/c_3492.
Ano: 1993 URL: http://hdl.handle.net/1834/3023
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Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi) OceanDocs
Otero, H.O..
The statistics provided by the Argentinean Fishing Vessel and the biological data collected by scientist in the last eleven years, allow us to estimate different aspects of the population dynamics of the common hake (Merluccius hubbsi). This work deals with the relative abundance and the maximal sustainable yield of this species, considering the bonaerense stock of the Southewest Atlantic. Analyzing the effective fishing density, concluding remarks can be made. The high catches of 1967 (more than 600.000 tons.)made by the Russian Fleet, affected the fishing density in 1968. Since 1969, the resource recovered the high density level as a consequence of a decrease in the catches and in the fishing effort, but vulnerability of the stock is shown.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Potential yield; Hake fisheries.
Ano: 1980 URL: http://hdl.handle.net/1834/2061
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Evaluation des stocks et aménagement des pêcheries de la ZEE mauritanienne OceanDocs
Diop, M.; Inejih, C.A.O.; Tous, P.; Failler, P.; Dia, M.A..
Le cinquième groupe de travail destiné à l’évaluation des stocks et l’aménagement des pêcheries de la zone économique exclusive mauritanienne s’est réuni à l’Institut Mauritanien de Recherches Océanographiques et des Pêches (IMROP) du 9 au 17 décembre 2002. Les objectifs de ce groupe de travail étaient d’actualiser les résultats des groupes de travail précédents, en utilisant les nouvelles informations disponibles ; d’établir un diagnostic des différents stocks et pêcheries afin de définir les potentiels de capture ainsi que les caractéristiques de l’effort permissible et d’évaluer l’impact des mesures d’aménagement actuellement en vigueur et identifier les perspectives à venir. Les résultats obtenus ont contribué à la formulation de recommandations...
Tipo: Journal Contribution Palavras-chave: Artisanal fishing; Catch composition; Catch statistics; Catch/effort; Cephalopod fisheries; Coastal fisheries; Demersal fisheries; Economic analysis; Environmental conditions; Fishery economics; Fishery management; Fishing effort; Fishing fleet; Landing statistics; Marine environment; Overfishing; Pelagic fisheries; Population dynamics; Prices; Quality assurance; Quality control; Research institutions; Research vessels; Seasonal distribution; Seasonal variations; Shrimp fisheries; Socioeconomic aspects; Upwelling; Demersal fisheries; Economic analysis; Fishery management; Marine environment; Prices; Research vessels; Catch composition; Coastal fisheries; Environmental conditions; Fishing effort; Overfishing; Pelagic fisheries; Population dynamics; Quality assurance; Research institutions; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_2469; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6178; Http://aims.fao.org/aos/agrovoc/c_6516; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_34068; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_35287; Http://aims.fao.org/aos/agrovoc/c_6514.
Ano: 2005 URL: http://hdl.handle.net/1834/1322
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Spiny lobster fishery on the Mahe Plateau : November 2001 - January 2002 OceanDocs
Payet, R.J.; Isidore, M..
The present report reviews the spiny lobster fishery on the Mahe Plateau for the 2001/2002 fishing season. The monitoring programme, set up in 1992, was continued this season to collect more information on the spiny lobster stock in order to improve and maintain proper management of this resource around the Mahe Plateau. For the 2001/2002 lobster fishing season, a total of 40 licenses were issued namely twenty seven on Mahe, five on Praslin and eight on La Digue. Similar to previous seasons, the most frequently used lobster fishing technique was snorkelling which involved 32 fishing units, whilst only four units used the trap method and one used both snorkelling and trap. For this three-month fishing season, a total of 5.5 tonnes of spiny lobsters were...
Tipo: Report Palavras-chave: Lobster fisheries; Fishery data; Catch/effort; Fishery management; Catching methods.
Ano: 2002 URL: http://hdl.handle.net/1834/237
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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
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Resultados del monitoreo de la tortuga carey (Eretmochelys imbricata) en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas, Cuba OceanDocs
Moncada, F.; Medina, Y.; Nodarse, G..
Se presentan los resultados obtenidos para la tortuga carey (Eretmochelys imbricata) en la plataforma cubana, a partir de los monitoreos en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas; entre 1995 y 2006. Se analizan algunos indicadores poblacionales como el comportamiento de la composición por talla, la talla media anual y la proporción sexual de los careyes capturados, así como el comportamiento de la captura comercial anual en los dos sitios. Se concluye que la talla media de los careyes capturados en la Isla de la Juventud y Nuevitas, se ha mantenido estable a lo largo del tiempo, con un predominio de las tallas menores en la Isla de la Juventud; y que la proporción por sexos favorable a las hembras muestra un...
Tipo: Journal Contribution Palavras-chave: Monitoring; Catch/effort; Marine turtles.
Ano: 2011 URL: http://hdl.handle.net/1834/4628
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Estandarización del esfuerzo de pesca ejercido sobre el abadejo (Genypterus blacodes) en aguas Argentinas. Período 1986-1996. OceanDocs
Cordo, H.D..
If the fishing effort is properly standardized, the catch per unit of effort may be proportional to biomass (C/f=q x B(med)). A multiplicative factorial model was applied to the ling Genypterus blacodes catch and effort data by the Argentine bottom trawl fleet recorded between 1986 and 1996. The relative fishing power of the fleet strata was estimated and the effort standardized to obtain normalized CPUEs. Provided they were estimated in the same spatial and temporal situation, there were no differences between the normalized CPUE and the nominal CPUE because ling is caught mainly as by-catch in the Argentine hake fishery. A general picture of the spatial and temporal distribution of ling as reflected by the commercial fleet operations was also obtained.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Fishing effort; Variance analysis; Fishing power; Mathematical models; Fishing power; Fishing effort; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_29792; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001 URL: http://hdl.handle.net/1834/1868
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Estimación de un índice de abundancia anual de gatuzo (Mustelus schmitti) a partir de datos de la flota comercial argentina. Período 1992-2008 OceanDocs
Pérez, M.; Massa, A.M.; Cordo, H.D..
Patagonian smoothhound (Mustelus schmitti) is one of the predominant cartilaginous fishes of the Argentine Sea (SW Atlantic Ocean). It is caught, mainly, in the coastal multispecific fishery with nearly other 30 bony and cartilaginous species. The group is known as ‘variado costero’. In this work the smoothhound abundance indices (CPUE) and standardized efforts for the 1992-2008 period in the area between 34~’S-42~’S were estimated. The General Lineal Model (GLM) and data derived from the argentine commercial fleet were used. Other aspects that could affect estimates and trends of the annual indices were also analyzed. Mean CPUE values estimated with the GLM, considered as annual standardized abundance indices, show an increasing trend as of 2000; the...
Tipo: Journal Contribution Palavras-chave: Abundance; Catch/effort; Coastal fisheries; Statistical analysis; Mustelus schmitti; Marine environment.
Ano: 2011 URL: http://hdl.handle.net/1834/4881
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Análisis de la flota dedicada a la pesca de corvina rubia y distribución de tallas del desembarque. Período 1992-1995 OceanDocs
Carozza, C.R.; Perrotta, R.G.; Cotrina, C.P.; Bremec, C.; Aubone, A..
This work deals with the structure and efficiency of the fleet fishing white croaker in Argentina. Results show that there exist two strata delimited by 17.25 m length and 345 HP vessels. The most efficient is constituted by those of smaller dimensions. During 1992-1995 landings were sampled and subsequently analyzed. A decrease in mean length landed and an increase of juveniles presence were detected. The situation coincided with an increment of catches, landings, fishing effort, exports and the fleet activities in "El Salado" area (35° 57' - 36° 57' LS).
Tipo: Journal Contribution Palavras-chave: Fishing vessels; Catch/effort; Catch statistics; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 2001 URL: http://hdl.handle.net/1834/2594
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La pesquería de la concha prieta (Anadara tuberculosa y Anadara similis) en el 2009: indicadores pesqueros y condición reproductiva en la zona sur y norte de Ecuador OceanDocs
Mora, E.; Moreno, J.; Jurado, V.; Flores, L..
Un análisis de los principales indicadores pesqueros (CPUE, esfuerzo y talla media de captura) fue realizado en base a información obtenida del seguimiento de la pesquería de la concha prieta durante el año 2009 en los sitios de desembarque más importantes. Los puertos de San Lorenzo y Hualtaco registraron los desembarques más altos (8.8 y 4.8 millones de conchas, respectivamente). Los rendimientos en CPUE oscilaron entre 95 y 122 conchas/conchero/día pesca,mientras que el esfuerzo promedio se encontró entre 38 y 331 concheros/día pesca. El porcentaje de conchas no comerciales fue superior al 45% (A. tuberculosa) y a 35% (A. similis) en cada puerto de desembarque. La condición reproductiva fue muy variable a lo largo del año en relación a los estadios de...
Tipo: Journal Contribution Palavras-chave: Cockle fisheries; Fishery surveys; Catch/effort; Sexual maturity; Size composition; Resource conservation.
Ano: 2010 URL: http://hdl.handle.net/1834/4795
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Beneficio económico de la caballa (Scomber japonicus) con relación a la temperatura superficial del mar en el área de Mar del Plata. OceanDocs
Perrotta, R.G.; Hernandez, D.R..
The temperature that limits the presence of schools of Argentine chub mackerel Scomber japonicus was found to be around 19°C in the Mar del Plata area Buenos Aires prov., Argentina. At higher values, most shoals leave coastal waters in direction to the mid-shelf. An inverse relationship was observed between catches per unit of effort CPUE and sea surface temperature. The highest CPUE values corresponded to temperatures lower than 19°C. Beyond that value, the possibility of obtaining a CPUE higher than the unit is nearly null and the low standard deviation means it is unlikely to reach high CPUE values. The economic profit per minute of each daily cruise was estimated using a case study carried out with a single vessel pilot with mean structural and...
Tipo: Journal Contribution Palavras-chave: Catch/effort; Surface temperature; Fishery management; Commercial fishing; Mackerel fisheries; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 2002 URL: http://hdl.handle.net/1834/2543
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Pesquerías de bivalvos: mejillón, vieiras (tehuelche y patagónica) y otras especies OceanDocs
Ciocco, N.F.; Lasta, M.L.; Bremec, C..
Fisheries of the mussel Mytilus edulis platensis, the tehuelche scallop Aequipecten tehuelchus and Patagonian scallop Zygochlamys patagonica are described. Information about catches of purple clam Amiantis purpurata in San Matias Gulf, mussel Aulacomya ater ater and hard shell clam Ameghinomya antiqua in San José Gulf is also presented. Regarding mytilus fishery, it is observed that the main catches were situated in Faro Querandí and Quequén beds (Buenos Aires Province, Argentina), where high densities occured in an area between 35 and 60 m depths. Those beds were exploited until the production was no more commercially interesting. The tehuelche scallop is a very well known resource from the Argentine Sea and its fisheries from San Matías and San José...
Tipo: Book Section Palavras-chave: Mussel fisheries; Scallop fisheries; Clam fisheries; Fishery surveys; Catch/effort; Fishing grounds; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1998 URL: http://hdl.handle.net/1834/2579
Registros recuperados: 87
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