Consulta: subjectFacets:"Catch/effort"
Registros recuperados: 87
Data/hora: 06/06/2024 03:25:18

Global habitat preferences of commercially valuable tuna
Provedor de dados: 5
Autores: 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

Statistics of the European and associated purse seine and baitboat fleets, in the Atlantic Ocean (1991-2017)
Provedor de dados: 5
Autores: 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

Peche de l'anchois (Engraulis encrasicholus ) dans le golfe de Gascogne et sur le littoral atlantique de Galice depuis 1920. Variations quantitatives.
Provedor de dados: 5
Autores: 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

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
Provedor de dados: 20
Autores: 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

Una aplicación de los estudios ambientales para orientar la pesqueria de la caballa Scomber japonicus en Mar del Plata
Provedor de dados: 20
Autores: 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

Seychelles artisanal fisheries statistics for 1986
Provedor de dados: 20
Autores: 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

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.
Provedor de dados: 20
Autores: 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

Situación actual y perspectivas del recurso Macarela (Scomber japonicus) en Ecuador
Provedor de dados: 20
Autores: 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

Las pesquerías artesanales en la costa del Ecuador durante 1992
Provedor de dados: 20
Autores: 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

Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi)
Provedor de dados: 20
Autores: 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

Evaluation des stocks et aménagement des pêcheries de la ZEE mauritanienne
Provedor de dados: 20
Autores: 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

Spiny lobster fishery on the Mahe Plateau : November 2001 - January 2002
Provedor de dados: 20
Autores: 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

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.
Provedor de dados: 20
Autores: 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

Resultados del monitoreo de la tortuga carey (Eretmochelys imbricata) en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas, Cuba
Provedor de dados: 20
Autores: 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

Estandarización del esfuerzo de pesca ejercido sobre el abadejo (Genypterus blacodes) en aguas Argentinas. Período 1986-1996.
Provedor de dados: 20
Autores: 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

Estimación de un índice de abundancia anual de gatuzo (Mustelus schmitti) a partir de datos de la flota comercial argentina. Período 1992-2008
Provedor de dados: 20
Autores: 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

Análisis de la flota dedicada a la pesca de corvina rubia y distribución de tallas del desembarque. Período 1992-1995
Provedor de dados: 20
Autores: 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

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
Provedor de dados: 20
Autores: 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

Beneficio económico de la caballa (Scomber japonicus) con relación a la temperatura superficial del mar en el área de Mar del Plata.
Provedor de dados: 20
Autores: 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

Pesquerías de bivalvos: mejillón, vieiras (tehuelche y patagónica) y otras especies
Provedor de dados: 20
Autores: 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

Caracterización de la pesquería artesanal de la localidad de Monte Hermoso
Provedor de dados: 20
Autores: Pérez, M.A.; Ruarte, C.O.
Monte Hermoso (Province of Buenos Aires, Argentina) is a tourist town inhabited by a large number of artisanal fishermen. The aim of this study was to characterize, through a descriptive analysis, the operational activity of the artisanal fleet and quantify the catches landed per species. The ships, of a trucker type, are 6-9 m length equipped with a 40-90 HP outboard motor. The data analyzed derive from purchase slips furnished by a gatherer corresponding to the November 2009-October 2010 period. The target species were stripped weakfish (Cynoscion guatucupa) and patagonian smoothhound (Mustelus schmitti). The former was caught with hand line throughout the year, essentially between September-December. The latter was fished during March-April and...
Tipo: Journal Contribution
Palavras-chave: Coastal fisheries; Artisanal fishing; Catch/effort; Landing statistics.
Ano: 2013
URL: http://hdl.handle.net/1834/5489

La pesquería de arrastre del camarón pomada (Protrachypene precipua) en la zona de Posorja-Ecuador durante 2008
Provedor de dados: 20
Autores: Chicaiza, D.; García-Sáenz, R.; Mendívez, W.
El desembarque total estimado durante 2008 por parte de la flota arrastrera pomadera en la zona de Posorja fue de 5 704 toneladas, existiendo un decremento del  3.3 %, con respecto al 2007. La CPUE promedio fue de 1 282 libras/barco/día. Se analizaron 2 008 individuos, de los cuales 42 % fueron machos y 58 % hembras. Entre abril y mayo se registraron altas capturas de individuos que aún no han alcanzado su madurez sexual (juveniles), coincidiendo con el periodo de mayor desembarque, comportamiento similar en los últimos cuatro años, (periodo de reclutamiento a la pesca). La talla media de madurez sexual fue de 7.6 cm LT alcanzada a los seis meses aproximadamente. Los parámetros de crecimiento estimados para 2008 fueron: K = 1,01 años-1 y L∞ = 10,3 cm (LT),...
Tipo: Journal Contribution
Palavras-chave: Trawlers; Landing statistics; Growth rate; Catch/effort; Sexual maturity.
Ano: 2009
URL: http://hdl.handle.net/1834/4782

Vieira patagonica (Zygochlamys patagonica King &amp; Broderip, 1832): una nueva pesquería en la plataforma continental argentina.
Provedor de dados: 20
Autores: Lasta, M.L.; Bremec, C.
Patagonian scallop (Zygochlamys patagonica King Broderip, 1832): A new fishery in the Argentine continental shelf. We present preliminary information on a new fishery of patagonian scallop (Zygochlamys patagonica King Broderip, 1832) in the Argentine Continental Shelf. A research program was conducted jointly by INIDEP and a fishing company during 1995 with the F/V Erin Bruce. The vessel, fishing equipment and processing on board are described. A total of 7235 fishing tows were performed during 246 days at sea. Seven new beds were located between 38º 50' S and 42º 30' S, along the 100-m isobath. Beds are discrete. Differences in the size structure by bed suggest that recruitment consists of sporadic pulses. Proportion of scallops and invertebrate by-catch...
Tipo: Journal Contribution
Palavras-chave: Scallop fisheries; Commercial fishing; Catch/effort; Fishing grounds; Size distribution; Potential resources; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1999
URL: http://hdl.handle.net/1834/1872

Característica y dinámica de la explotación de corvina rubia (Micropogonias furnieri) durante la zafra invernal, años 1995 a 1997.
Provedor de dados: 20
Autores: Lasta, C.A.; Carozza, C.R.; Suquelle, P.; Bremec, C.; Errazti, E.; Perrotta, R.G.; Cotrina, C.P.; Bertelo, C.; Boccanfuso, J.
Whitemouth croaker Micropogonias furnieri fishery  during three intensive fishing seasons in the outer area of the La Plata River (Argentina-Uruguay) is analyzed. Resource exploitation in the South Atlantic area shows a general retraction of the distribution range and an isolation of the La Plata River stock where most of the fishing effort concentrates. The species market evolution brought about, for Argentina and Uruguay, an important shift in its dynamics as of 1992, when the product insertion in Asiatic markets generated an important commercial attraction and a subsequent increase in the fishing effort by the argentine inshore coastal fleet. This caused a change in the fishery development in Argentina and the establishment, in winter, of a fleet...
Tipo: Journal Contribution
Palavras-chave: Coastal fisheries; Fishery management; Catch/effort; Landing statistics; Marketing; Fishery management; Marketing; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2000
URL: http://hdl.handle.net/1834/2540

Kitefin shark Dalatia licha (Dalatiidae)fishery in the northeastern Atlantic and some recommendations for elasmobranchs explotation
Provedor de dados: 20
Autores: Perrotta, R.G.
In the Azores Islands (NE Atlantic), between 1986 and 1998, Dalatias licha was caught to obtain liver oil. A drastic abundance decline, probably attributed to a high level of exploitation, was observed. In Argentina elasmobranchs have undergone intensive fishing and, at present, catches are compromised. The history of the fishery in Azores should be taken as example and warning when implementing elasmobranchs fisheries management in Argentina.
Tipo: Journal Contribution
Palavras-chave: Abundance; Catch/effort; Fishery management; Shark fisheries; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 2004
URL: http://hdl.handle.net/1834/1501

Aspectos generales de la pesca del bonito (Sarda sarda)en la Argentina
Provedor de dados: 20
Autores: Hansen, J.E.
Basic aspects of the fising of Bonito in Argentina such as: catch statistics, fleet and gears, season and fishing grounds, and catch per unit effort (CPUE)are analized. FAO World Catch Statistics show that none of the different populations of Sarda sarda or other species of the Genus may support a highly productive fishery Exceptions are Sarda chilensis and S.sarda from the Black Sea, which us exploited by Turkey. On the basis of available information it may be inferred that the Bonito of Argentina has more competitors and a narrower thophic spectrum than that from the Black Sea.
Tipo: Journal Contribution
Palavras-chave: Landing statistics; Fishing gear; Fishing vessels; Catch/effort; Fishing gear; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 1987
URL: http://hdl.handle.net/1834/2009

Description de l'activité de la flottille industrielle pélagique dans la zone économique exclusive mauritanienne en 1990
Provedor de dados: 20
Autores: Ould Taleb Ould Sidi, M.M.
Résumé : En 1990, la pêcherie pélagique en Mauritanie s’est caractérisée par d’importantes variations – tant en termes d’effort et de rendement qu’au niveau de la composition spécifique des captures – par rapport aux années antérieures. En effet, l’effort, exprimé en jours de pêche standards, a atteint 9761 jours de pêche standards ; ce qui constitue une augmentation de plus de 21% par rapport à 1989. Aussi, avec 372000 tonnes, les captures totales ont enregistré une augmentation de 4,4%. Pour sa part, la Prise par Unité d’Effort (PUE) a enregistré un recul sensible passant de 44 tonnes/jour de pêche (t/jp) en 1989 à 38 t/jp en 1990. La composition spécifique des captures a été marquée par une augmentation importante de la contribution des sardinelles qui...
Tipo: Journal Contribution
Palavras-chave: PUE; Pelagic fish; Catch/effort; Capture fisheries.
Ano: 1996
URL: http://hdl.handle.net/1834/232

Influencia de las interacciones con el factor Año en los índices anuales de abundancia obtenidos por modelos lineales generales utilizando datos de Captura por Unidad de Esfuerzo
Provedor de dados: 20
Autores: Hernandez, D.R.; Perrotta, R.G.
The problem in the definition of a relative annual abundance index using a General Linear Model is posed. The possible factors generating changes in the catch per unit effort (CPUE) are discussed and the parameterization of the model is analyzed, in particular the Sigma-restrictive parameterization. This report considers the problem caused by the presence of interactions of first order that include the factor Year in the model. It has been mathematically demonstrated that in the presence of these interactions, the index series is not proportional to the abundance annual mean of the resource. An approach of practical order to evaluate the possible effect of the interactions that include the factor Year in the index is considered using the percentage of...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Catch/effort; Mathematical models; Abundance; Fishing vessels; Stock assessment; Mathematical models; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 2006
URL: http://hdl.handle.net/1834/2511

La pesquería artesanal del recurso concha en las zonas de Esmeraldas y El Oro, durante el 2008
Provedor de dados: 20
Autores: Mora, Elba; Moreno, Juan; Jurado, Viviana.
Se presentan los resultados del seguimiento de la pesquería del recurso concha realizado en el año 2008. Los puertos de Hualtaco y San Lorenzo registraron los más altos desembarques (6 667 617 y 5 959 595 conchas, respectivamente). El esfuerzo promedio máximo se presentó en San Lorenzo (320 recolectores/día pesca) y el mínimo en Puerto Jelí (50 recolectores/día pesca); mientras que la captura promedio de conchas (CPUE) más alta se registró en Puerto Jelí(136 conchas/hombre/día de pesca)y la menor en Muisne (100 conchas/hombre/día de pesca). El porcentaje de conchas por debajo de la talla mínima legal (45 mm Lt) tanto de concheros y comerciantes es superior a 55% en cada puerto de desembarque. Respecto a la condición reproductiva, se obsevó gran...
Tipo: Journal Contribution
Palavras-chave: Artisanal fishing; Catch/effort; Catch composition; Mangroves.
Ano: 2009
URL: http://hdl.handle.net/1834/4563

La ictiofauna de Bahía San Blas (Provincia de Buenos Aires) y su relación con la dinámica de las pesquerías deportiva y artesanal
Provedor de dados: 20
Autores: Llompart, F.M.
This study analyses the recreational and artisanal fisheries in San Blas Bay and their relationship with the dynamic of the temporal and spatial variability of the coastal fish assemblage. In addition some biological characteristics of two main target species are assessed. San Blas Bay is part of a natural reserve located in the southern part of Buenos Aires province, which has a great value in terms of tourism, ecology and productivity. According to different sampling methodologies used in this thesis 11 species of chondrychthes, 26 species of bony fish, and a hagfish (Class Petromizontida) were recorded, with a predominance of species belonging to Buenos Aires biogeographic province. To evaluate the fish assemblage seasonal pattern, every three months...
Tipo: Theses and Dissertations
Palavras-chave: Artisanal fishing; Sport fishing; Fishery management; Coastal fisheries; Marine fish; Ecological associations; Abundance; Catch/effort; Biogeography; Fishing effort; Mustelus schmitti; Odontesthes argentiniensis; Marine environment.
Ano: 2011
URL: http://hdl.handle.net/1834/4779

La pesquería artesanal del recurso concha Andara tuberculosa y A. similis en la costa ecuatoriana durante el 2004
Provedor de dados: 20
Autores: Moreno, Juan; Mora, Elba.
Durante el 2004 se realizó el seguimiento del recurso concha en los principales puertos de desembarques de la costa ecuatoriana. Se estimó las capturas promedios mensuales en cada puerto, registrándose en San Lorenzo desembarques superior a 1000 000 conchas, en contraste con puerto El Morro que registró los valores más bajos (alrededor de 50 000 conchas). A nivel de esfuerzo y captura por conchero, San Lorenzo registró los valores promedios más altos (284 concheros/día/pesca y 196 conchas/pescador/día, respectivamente). En la proporción de especies en los desembarques comerciales predominó A.tuberculosa en una relación 3:1 con respecto a A. similis. En la mayoría de los puertos se registró el predominio de conchas menores a 45 mm (talla legal), siendo...
Tipo: Journal Contribution
Palavras-chave: Artisanal fishing; Catch/effort; Catch composition.
Ano: 2009
URL: http://hdl.handle.net/1834/4560

Capturas de cangrejo rojo Ucides occidentalis en los puertos de la provincia del Guayas y El Oro, Ecuador, durante 2009
Provedor de dados: 20
Autores: Solano, F.; Flores, L.; Ruiz, W.
Durante el 2009, se realizó el seguimiento de las capturas de cangrejo rojo (Ucides occidentalis), en las principales localidades de extracción de la provincia de El Oro y Guayas, la captura total estimada de cangrejos fue de 2 897 707 y 3 184 795 en las provincias mencionadas. Las localidades de Puerto Jelí y Puerto Baquerizo Moreno fueron las de mayor desembarque, lo que está relacionado directamente con el esfuerzo. La CPUE fue muy variada en los puertos monitoreados con valores que oscilaron entre 47 a 94 cangrejos hombre-1 día-1, obteniéndose mayores niveles en el periodo posterior a la época de veda. La distribución de tallas de amplitud del cefalotórax de los cangrejos capturados, en cada una de las localidades muestreadas, fue superior a la talla...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Crab fisheries; Size-limit regulations; Landing statistics.
Ano: 2010
URL: http://hdl.handle.net/1834/4793

Seychelles artisanal fisheries statistics for 1992
Provedor de dados: 20
Tipo: Report
Palavras-chave: Artisanal fishing; Catch statistics; Catch/effort.
Ano: 1993
URL: http://hdl.handle.net/1834/5070

Multigear fishery of Nile perch (Lates niloticus) in the Winam Gulf of Lake Victoria: with special reference to mortality, selection and catch/effort data
Provedor de dados: 20
Autores: Manyala, J.O.; Rabuor, C.O.
A survey of multigear fishery of Nile perch (Lates niloticus) in the     Winam Gulf of Lake Victoria indicates that total mortality coefficient     (Z) determined from longline fishery using hook number 6 was double     that of hook number 7. Total mortality coefficient determined from     gillnets and beachseines were lower than those of hooks. The catch per     unit effort (C/f) measured using different criteria indicated an     increase for all gears in 1990 as compared to 1989 except for     gillnets. A two-fold increase in unit effort (f) increased the C/f for     mosquito seines by only 30%. The typical exponential decay of C/f with     increasing f of exploited stock in equilibrium was lacking in the case     of Nile perch in the Winam Gulf.
Tipo: Proceedings Paper
Palavras-chave: Lates niloticus; Catch/effort; Exploitation; Gillnets; Lake fisheries; Gillnets; Lake fisheries; Http://aims.fao.org/aos/agrovoc/c_32431; Http://aims.fao.org/aos/agrovoc/c_4159.
Ano: 1994
URL: http://hdl.handle.net/1834/1174

Pêcheur Breton : An analysis of data relating to a Mothership Dory fishing operation in Seychelles Waters from March 1991 - June 1992
Provedor de dados: 20
Autores: Mees, C. C.
This report presents analyses of data for Trips 2, 3 and 4 undertaken by the mothership - dory fishing venture of Pecheur Breton. Trip 1 was described separately (Mees, 1991). A comparison of data for the 4 trips follows. Trip 2, from 22 October 1991 - 16 December 1991 targeted stocks at the SE edge of the Mahe Plateau (25 days), the banks South of the Plateau (12 days), Amirantes (5 days), Platte (1 day) and the Providence / Farquhar group (12 days). 665 dory fishing trips landed 248.86 tonnes of fish of which 85.4% were demersal species. The mean catch rate was 12.76 kg/man-hour. Trip 3, from 8 January 1992 - 12 March 1992 fished for 28 days in the Amirantes, 22 at the banks South of the Mahe Plateau, 5 on the SE edge of the Mahe Plateau and 2 days at...
Tipo: Report
Palavras-chave: Fishing operations; Catch/effort; Data processing.
Ano: 1992
URL: http://hdl.handle.net/1834/5129

Updated standardized CPUE of bigeye caught by the Japanese longline fishery in the Indian Ocean.
Provedor de dados: 20
Autores: Okamoto, H.; Miyabe, N.
The catch per unit of effort (CPUE) of bigeye caught by the Japanese longline fishery in the Indian Ocean was standardized up to 1997 using general linear model (GLM) analysis. Standardized CPUE in the tropical area, which was relatively stable, ranged from 6 to 8 fish per 1,000 hooks in 1979-1987 and decreased continuously to about 4 in 1997. In contrast, CPUE in the southern area did not show the stable trend of the tropical areas, especially after 1990. This unstable CPUE pattern in the southern area in recent years seems to be derived mainly from the shift of targeting in longline operations. If the trend derived from analysis for 1952-1976 is included, current CPUE is estimated to be about 33 % of that in 1954.
Tipo: Proceedings Paper
Palavras-chave: Longlining; Catch/effort; Fishing effort; Fishery data.
Ano: 1998
URL: http://hdl.handle.net/1834/56

Situación actual de los recursos pesqueros del Archipiélago Sabana-Camagüey, Cuba
Provedor de dados: 20
Autores: Claro, R.; García Arteaga, J.P.; Gobert, B.; Cantelar Ramos, K.; Valle Gómez, S.V.; Pina Amargos, F.
The main objectives of the present study were to describe the historical development of finfish fisheries in the Archipelago Sabana-Camagüey and adjacent northeast region (Cuba), and to assess the current status of fisheries resources. Species and size composition of trawl, trap, and gillnet catches were surveyed, fisheries statistics from fishing enterprises of the area were analysed, and experienced fishermen were interviewed. The historical evolution of  catches and changes in fishing effort since 1962 is described. After a growth phase in catches resulting from increasing fishing effort, the fisheries reached a level of overexploitation by the second half of the 70s. The reduction of fishing effort and the establishment of some regulations has...
Tipo: Journal Contribution
Palavras-chave: Fishery resources; Catch/effort; Catch composition; Fishery resources; Catch composition; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_1384.
Ano: 2004
URL: http://hdl.handle.net/1834/3050

Análisis secuencial de la población de polaca (Micromesistius australis) en el período 1987-1997 ajustado con valores de rendimiento por unidad de esfuerzo de pesqueros comerciales.
Provedor de dados: 20
Autores: Wöhler, O.C.; Cordo, H.D.; Hansen, J.E.; Cassia, M.C.
The current status of southern blue whiting Micromesistius australis stock is described. A single, closed fish population is assumed to inhabit the SW Atlantic. Based on catch data corresponding to years 1987-1997, a sequential analysis on the stock is carried out (Cohort Analysis). Under an adaptative framework, catch per unit of effort data from commercial vessels are used to fit the model. Two commercial fleets are used in the fitting, i.e. Polish vessels (1987-1994)and Argentine surimi factory vessels (1991-1997). Results indicate that both, total stock biomass and spawning stock biomass would have declined. Total biomass would have decreased from a maximum close to 1.4 million tons in 1990 down to 0.5 mt in 1997 whereas the current spawning stock...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Catch/effort; Recruitment; Biomass; Demersal fisheries; Demersal fisheries; Stock assessment; Fishery management; Biomass; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2001
URL: http://hdl.handle.net/1834/1867

Reclutamiento de la vieira patagónica, Zygochlamys patagonica (Bivalvia: Pectinidae), en el sector norte de manejo, océano Atlántico sudoccidental
Provedor de dados: 20
Autores: Mauna, A.C.
CDATA[Patagonian scallop (Zygochlamys patagonica) is a suspension feeder bivalve that presents the highest concentrations of recruits associated to the shelf-break front; but the temporal pattern of these recruitments have not been described in detail. Given the importance of recruitments for the development of the fishery and the population dynamics of the resource, in this report space-time distribution [catch per unit of effort (CPUE) of specimens =&lt;, 15 mm, age 0+] is described and comparison between years and the Management Units (MU) 1.2 and 2 carried out. The study area corresponds to the North Management Sector of the patagonian scallop fishery (38º S-39º 30’ S, 55º W-56º W), Argentine Sea, SW Atlantic Ocean. The null hypothesis on recruitment...
Tipo: Journal Contribution
Palavras-chave: Scallop fisheries; Catch/effort; Recruitment; Stock assessment; Shelf fronts.
Ano: 2013
URL: http://hdl.handle.net/1834/5488

Stock assessment of the bluemouth (Helicolenus dactylopterus) in Azorean waters during the 1990-2002 period, applying a biomass dynamic model
Provedor de dados: 20
Autores: Perrotta, R.G.; Hernandez, D.R.
Bluemouth (Helicolenus dactylopterus), a benthic fish mostly inhabiting at depths between 500 m and 600 m, represents a highly valuable economic resource for local fishermen at the Azores Islands (NE Atlantic). Nominal catches of bluemouth increased from 1990 through 1994, and declined afterwards reaching in 1999 the lowest value recorded. Standardized catch per unit effort (CPUE) was used as an index for stock relative abundance; a General Linear Model, considering several factors that may have affected the fishing efficiency of commercial vessels, was run to obtain this CPUE index. These factors were: fleet type, year, month, and boat size; the last three factors were found to be statistically significant. A discrete version of the Schaefers Biomass...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Catch/effort; Risks; Mathematical models; Stock assessment; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2005
URL: http://hdl.handle.net/1834/1563

Estudio biológico pesquero de centolla y centollón en la XII Región
Provedor de dados: 20
Autores: Guzmán, L.; Daza, E.; Canales, C.; Cornejo, S.; Quiroz, J.C.; González, M.
El estudio estuvo orientado a disponer de un diagnóstico de la pesquería de centolla (Lithodes santolla) y centollón (Paralomis granulosa) en la región de Magallanes y Antártica Chilena sobre la base de antecedentes bilógico pesqueros recogidos en campañas específicas de pesca y puertos de desmbarque, además de evaluar las medidas de administración vigentes y proponer eventuales nuevas medidas. Se inició el 26 de agosto de 2002 y la toma de información de terreno terminó a fines de noviembre de 2003.
Tipo: Report
Palavras-chave: Crustacean fisheries; Catch/effort; Resource management; Stock assessment; Stock assessment; Resource management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2004
URL: http://hdl.handle.net/1834/1730

Pesquerías de pulpos
Provedor de dados: 20
Autores: Re, M.E.
The species composition, population structure, seasonality in catches and fishing of octopuses along the Argentine coast are described from available statistical data and capture samplings. Three species of octopuses, Octopus tehuelchus, Eledone massyae and Enteroctopus megalocyathus are caught. An artisanal intertidal fishery of O.tehuelchus occurs mainly in summer, from November-December to March-April in the North Patagonian coast, especially in the San Matias Gulf, by hooks. E.massyae is caught by coastal trawlers all around the year but mainly in winter and spring in Mar del Plata and Necochea areas. E.megalocyathus is caught by hooks in the intertidal zone and by diving in the subtidal zone, from the North Patagonian gulfs (March to November)to the...
Tipo: Book Section
Palavras-chave: Artisanal fishing; Catch/effort; Cephalopod fisheries; Fishery management; Stock assessment; Population structure; Bottom trawling; Fishery management; Stock assessment; Population structure; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 1998
URL: http://hdl.handle.net/1834/2578

Estimación de los poderes de pesca relativos de la flota dealtura convencional merlucera argentina. Zona patagónica: 41°-48°S
Provedor de dados: 20
Autores: Irusta, C.G.; Aubone, A.; Simonazzi, M.A.; Ibañez, P.M.
In this paper detailed mathematical description of the generalized lineal model used and data grouping criteria are presented in order to estimate the relative fishing power of four categories of the hake ice-chilled fleet. The analysis was focused to the patagonian sector (41°-48°S) of the hake total distribution area.The fleet has systematically operated in the same fishing areas between 1989-1993. The variables that better explain in yields trends of each vessel category were analyzed. The fishing power of vessels with power higher than 1200 HP has been raising since 1990 because of increasing efficiency. These vessels generate three times more fishing mortality than the standard vessels (lower than 700 HP)
Tipo: Journal Contribution
Palavras-chave: Gadoid fisheries; Catch/effort; Mathematical models; Fishing power; Fishing vessels; Fishing mortality; Fishing fleet.
Ano: 1997
URL: http://hdl.handle.net/1834/5791

Analysis and prediction of yellowfin tuna (Thunnus albacares) catch rates of longline fisheries in the western Indian Ocean using a neural network.
Provedor de dados: 20
Autores: Nishida, T.; Komatsu, T.
Strengthening tuna management is one of the primary tasks for the new Indian Ocean Tuna Commission (IOTC). Stock assessment and the prediction of the dynamics of the tuna resources will become increasingly important research topics because they provide the basic information for the management decision process. Under these circumstances, this paper attempts to develop the stock analyses and prediction techniques using neural networks. As a first step and as a test study, analyses and predictions of catch rates of the Japanese yellowfin tuna longline fisheries are attempted.
Tipo: Proceedings Paper
Palavras-chave: Fishery management; Stock assessment; Catch/effort; Tuna fisheries.
Ano: 1998
URL: http://hdl.handle.net/1834/60

Monitoreo biológico pesquero del recurso erizo en la XII Región (FASE I)
Provedor de dados: 20
Autores: Barahona, N.; Young, Z.; Gálvez, P.; Orensanz, J.M.; Cornejo, S.; Mejías, P.; Miranda, H.; Jerez, G.; Carrasco, J.
El propósito de este proyecto fue diseñar e implementar un sistema de monitoreo biológico-pesquero, geográficamente orientado al levantamiento de información de las actividades extractivas del recurso erizo en la XII Región. Para alcanzar el objetivo general del proyecto, se planteó iniciar un proceso de toma de datos complementario al ejecutado por el proyecto Investigación Situación Pesquerías Bentónicas, en el marco de una Pesca de Investigación. En la propuesta técnica, el período comprometido con actividades en terreno, fue de tres meses; se hicieron algunos ajustes a la programación y se traspasaron algunas actividades a la fase II de este estudio. De esta manera se continuó con la toma de datos durante todo el período de extracción, marzo a agosto...
Tipo: Report
Palavras-chave: Fishery surveys; Monitoring; Catch/effort; Resource management; Benthos; Biological data; Benthos; Monitoring; Resource management; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_4911; Http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2005
URL: http://hdl.handle.net/1834/1809

Ommastrephes bartramii: a potential target for the squid fishery in the Southwest Atlantic
Provedor de dados: 20
Autores: Brunetti, N.E.; Ivanovic, M.L.
Six exploratory cruises on board of the Japanese RV "Shinko Maru N°3" were carried out between 1997 and 2002 to obtain data on red squid (Ommastrephes bartramii)in the oceanic area of the SW Atlantic off Argentina and Uruguay (33° S-42° S/43° W-55° W). Between 10 and 32 jigging stations were performed each year during the night at depths of 80-200 m. Positive catches were registered in the whole area investigated with yields ranging between 0.01 and 2.03 kg/ (hour*line)and 0.001-2.26 individuals/(hour*line). Total catches oscilated between 1,426 kg in 2002 and 2,825 kg in 2000 and sea surface temperature at the fishing stations between 7.5° C and 24.5° C. Yields higher than 1 individual/ (hour*line)were registered at surface temperatures of 22° C-24° C....
Tipo: Journal Contribution
Palavras-chave: Cephalopod fisheries; Fishery surveys; Yield; Exploratory fishing; Catch/effort; Abundance; Geographical distribution; Exploratory fishing; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_2759; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2004
URL: http://hdl.handle.net/1834/1504

A mothership dory fishing operation in Seychelles: results of the first voyage of the locally owned vessel Pecheur Breton, March - May 1991
Provedor de dados: 20
Autores: Mees, C. C.
A Mother ship dory fishing operation was conducted in Seychelles waters by the vessel Pecheur Breton and 11 catcher boats during 1991. This venture was carried out over a 72 day period from 2nd March 1991 to 14 May 1991 and 246 tonnes of fish were caught.
Tipo: Report
Palavras-chave: Demersal fisheries; Fishing operations; Mother ships; Catch/effort.
Ano: 1991
URL: http://hdl.handle.net/1834/5122

Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi)
Provedor de dados: 20
Autores: 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/1834/5456

Situación actual y perspectivas del recurso Pinchagua (Opisthonema spp.) en Ecuador
Provedor de dados: 20
Autores: Santos, M.; Fuentes, E.
A partir de 1990 y debido a la drástica reducción en la abundacia de los recursos Sardina (Sardinops sagax) y Macarela (Scomber japonicus) las embarcaciones de la clase 3 también dirigieron su esfuerzo hacia la captura de Pinchagua. Los patrones de las capturas mensuales de los últimos diez años presentan una cierta estacionalidad con mayores capturas entre mayo y agosto. Las tendencias de las capturas anuales entre 1982-1991 han mantenido un comportamiento irregular influenciado por eventos cálidos EL Niño (EN) y un pulso de abundacias y de altas capturas. Durante el periodo analizado (1982-1991) la captura promedio fue de 186562 t. Las máximas capturas se registraron entre 1985 y 1986 y fueron superiores a las 325000 t/año; un brusco descenso ocurrió en...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Fishing effort; Catch/effort; Biological data; Fishery resources; Fishery resources; Pelagic fisheries; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1992
URL: http://hdl.handle.net/1834/3049

Title Stock assessment on the Indian Ocean albacore tuna.
Provedor de dados: 20
Autores: Chen, C.Y.
This paper deals with the CPUE trend and maximum sustainable yield (MSY) of Indian Ocean albacore tuna. The daily catch records of Taiwanese longliners operated in the Indian Ocean dating back to 1979 were used in this study. Deep longline techniques were introduced in the tuna fishery in the mid-1980s and an effort was made to segregate the statistics of regular longliners from those of deep longliners. A general linear model (GLM) was adopted to standardize the CPUE for data of both time periods, 1979- 1985 and 1985-1996. A surplus production model was employed to estimate its MSY and optimum effort (fopt), and the results revealed that, MSY=30.5x103 t; = 319 x 106 effective hooks.
Tipo: Proceedings Paper
Palavras-chave: Catch/effort; Catch data; Longlining; Catch statistics.
Ano: 1998
URL: http://hdl.handle.net/1834/55

Estimación de un índice de abundancia anual estandarizado para pescadilla de red (Cynoscion guatucupa), mediante la aplicación de un modelo lineal general; período 1992-2003
Provedor de dados: 20
Autores: Ruarte, C.O.; Perrotta, R.G.
The stripped weakfish (Cynoscion guatucupa) has a wide latitudinal distribution (22° S-43° S) and it is object of fishery in Brazil, Uruguay and Argentina (SW Atlantic). In this last country, it is mainly captured in the coastal region of Buenos Aires Province by means of a fleet, which has between 20 m and 30 m length. In Argentina, the average landings in the last 5 years were 9,900 t. It is the second commercial species among the coastal groups. There are two main fishery areas of this species: the Argentinean-Uruguayan Common Fishing Zone (AUCFZ) and the El Rincón area, in the South of bonaerense littoral. Due to the importance of this species, it is necessary to define an index of annual abundance to allow a suitable diagnosis of the fishery...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Size distribution; Abundance; Commercial fishing; Coastal fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2007
URL: http://hdl.handle.net/1834/2519

El proceso de pesca en la explotación de la vieira patagónica (Zygochlamys patagonica) y las respuestas espacio-temporales de las poblaciones
Provedor de dados: 20
Autores: Bogazzi, E.
Several attributes of populations of sedentary organisms differentiate benthic fisheries from those approached by the classic theory, inspired by fin-fisheries. The assessment and management of sedentary resources require the application of non-conventional methodological tools. Understanding the fishing process, in particular, is central to the analysis and management of those fisheries. The purpose of this thesis was to investigate the fishing process and its impact on stocks of the Patagonian scallop (Zygochlamys patagonica) fishery. Data and information utilized included: (i) historical data from commercial vessels and experimental fishing; (ii) positional, catch and effort data, and additional information corresponding to fleet activity between 1995...
Tipo: Theses and Dissertations
Palavras-chave: Scallop fisheries; Stock assessment; Fishing vessels; Catch/effort; Fishing effort; Fishing grounds; Oceanic fronts; Stock assessment; Fishing vessels; Fishing effort; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 2008
URL: http://hdl.handle.net/1834/2996

La pesquería de especies pelágicas en Ecuador
Provedor de dados: 20
Autores: Aguilar, F.
Entre las principales especies pelágicas costeras que tradicionalmente han sido capturadas por la flota cerquera del Ecuador están: Sardina del sur (Sardinops sagax), Macarela o Morenillo (Scomber japonicus), Pinchagua (Opisthonema spp.), Chuhueco (Cetengraulis mistycetus), Sardina redonda (Etrumeus teres). Las embarcaciones utilizadas son del tipo Purse Seiner. Este artículo muestra un análisis de la tendencia de las capturas obtenidas entre 1982 y 1991, lo que permite apreciar con claridad que posterior al máximo obtenido en 1985, las capturas descendieron significativamente como consecuencia en la reducción en la abundancia de Sardina y Macarela, lo que se explica por los efectos negativos de un intenso esfuerzo pesquero y de condiciones oceanográficas...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Fishing effort; Catch/effort; Pelagic fisheries; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 1992
URL: http://hdl.handle.net/1834/3047

Importance des saisons de transition hydrologique et impact des anomalies climatiques sur l'activité d’une flottille pélagique en ZEE mauritanienne 1985 – 1987
Provedor de dados: 20
Autores: Chavance, P.; Loktionov, Y.; Mahfoudh, M.
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Condition factor; Environmental effects; Environmental impact; Fishery resources; Fishing fleet; Pelagic fisheries; Seasonal distribution; Seasonal variations; Temperature effects; Temporal variations; Upwelling; Environmental impact; Fishery resources; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 1989
URL: http://hdl.handle.net/1834/1144

Efectos del filtrado de datos sobre la estimación de la tendencia de los índices de abundancia de polaca (Micromesistius australis)
Provedor de dados: 20
Autores: Cordo, H.D.
Catch per unit of effort (CPUE)analysis of the Argentine surimi fleet is a routine work to estimate abundance indices of southern blue whiting Micromesistius australis. Several analysis of this fishery suggest that, as of the years when intensive fishing by foreign and national fleets started, the resource has suffered a marked decline. When calculating the CPUE it is common practice to take into acount only trips and fishing operations with high catches of the target species fishing operations directed to other species are not considered to avoid underestimations. Therefore, in order to include a percentage of catch of the analyzed species higher than a subjective value, available data are filtered. However, because only operations with high yield are...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Yield; Commercial fishing; Overfishing; Stock assessment; Stock assessment; Overfishing.
Ano: 2002
URL: http://hdl.handle.net/1834/1584

Análisis secuencial de la población de merluza de cola (Macruronus magellanicus)en el atlantico sudoccidental período 1985-1995.
Provedor de dados: 20
Autores: Wöhler, O.C.; Giussi, A.R.; Hansen, J.E.
Sequential population analysis on Long Tail Hake (Macruronus magellanicus)from the Southwest Atlantic. Years 1985-1995. VPA on the Long Tail Hake (Macruronus magellanicus), based on data covering the years 1985 up to 1995, was performed to assess the current state of the stock. Simulation trials, inducing uncertainty about both the natural mortality rate and recruitment were also accomplished, to evaluate the risk of overfishing which is associated to different fishing alternatives, always under the assumption of a single and closed Long Tail Hake population. CPUE data were not appropriate for tunning, so the traditional VPA has been applied. During the period of study, stock biomass and spawning stock biomass showed an increased trend. Long and short-term...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Catch/effort; Fishing mortality; Overfishing; Biomass; Sexual maturity; Stock assessment; Fishery management; Biomass; Overfishing; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_34068; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1999
URL: http://hdl.handle.net/1834/1875

Seychelles schooner fishery: an analysis of data collected during the period January 1985 to July 1990
Provedor de dados: 20
Autores: Mees, C. C.
Schooners are the largest category of vessel participating in the local fishery. They are fully decked fishing boats equipped with inboard engines and fish with handlines or electric fishing reels. They account for about 15% of the total artisanal catch, but commercially valuable demersal species predominate. Their economic importance is thus greater than the catch volumes would indicate. Furthermore, they have the greatest range and are able to undertake longer fishing trips than other local vessels. They, or a similar class of vessel, are thus considered vitally important for the future development of the local fishery, where the potential for expansion from demersal species is considered to be offshore on the more distant banks and island groups. The...
Tipo: Report
Palavras-chave: Artisanal fishing; Fishery statistics; Catch/effort; Fishing effort; Fishing gear.
Ano: 1990
URL: http://hdl.handle.net/1834/5128

Evaluación de los índices de abundancia para corvina rubia (Micropogonias furnieri) y pez palo (Percophis brasiliensis) obtenidos mediante modelos lineales generales: simulaciones de Monte Carlo y análisis de las interacciones con el factor año
Provedor de dados: 20
Autores: Rico, M.R.; Hernández, D.R.; Carozza, C.R.
Assessment of abundance indexes for whitemouth croaker (Micropogonias furnieri) and brazilian flathead (Percophis brasiliensis) obtained with general linear models: Monte Carlo simulation and analysis of the interactions with the “year” factor. The effect of interactions with the year factor on the annual index of relative abundance obtained with general linear models applied to the cath per unit of effort data of whitemouth croaker and brazilian flathead commercial fleet was evaluated applying the Monte Carlo simulation. Levels on the relative percentage of variance explained by the interactions with the year factor (%RVEAÑO) were determined, above which loss of proportionality between the relative abundance series given by the index and the real series...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Abundance; Catch/effort; Simulation; Commercial species; Coastal fisheries.
Ano: 2013
URL: http://hdl.handle.net/1834/5503

La zona común de pesca argentino-uruguaya y el problema de la cuota de captura de merluza (Merluccius hubbsi)
Provedor de dados: 20
Autores: Bezzi, S.I.; Aubone, A.; Irusta, G.
The Argentine-Uruguayan Common Fishing Zone and the problem of the hake catch quota allocation. The aim of this paper is to present the problem of the catch quota in the shared zone and the proposals related to the maximum catch from 1976 to 1998. The state of the population which inhabits the Common Fishing Zone and north of 41°S is diagnosed, concluding that the total biomass has declined in this period and the spawning stock biomass is under the allowable biological catches. In addition, the catch per unit effort (CPUE)of the commercial fleet has a declining tendency and the total effort is duplicated. Biological population characteristics are presented: reproduction, feeding, nursery grounds and closed areas to protect juveniles. Proportional...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Biomass; Quota regulations; Depleted stocks; Fishing grounds; Shared stocks; Biomass; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1999
URL: http://hdl.handle.net/1834/1876

Evolución reciente de la captura por unidad de esfuerzo (1993-2004) y de las tallas medias (1993-2005) del pez palo (Percophis brasiliensis) en el litoral marítimo entre 34º S y 42º S
Provedor de dados: 20
Autores: Rico, M.R.; Perrotta, R.G.
Brazilian flathead (Percophis brasiliensis), of wide latitudinal distribution (23° S-47° S), is caught in Argentina in two coastal areas north and south of the Province of Buenos Aires delimited by the 39° S latitude. The species shows the highest abundance and catch yield percentages ( 5. ) of all coastal fish groups. The importance of the species makes it necessary to analyze mean lengths and define an annual abundance index that would allow to diagnose the state of the stock. To calculate the index the General Linear Model was adjusted. The factors used were Year, Quarter and 4 sub-areas, all statistically significant. The problem generated by the presence in the model of first order interactions that include the Year factor is discussed. It is...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Mathematical models; Size distribution; Coastal fisheries; Mathematical models; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2009
URL: http://hdl.handle.net/1834/3464

Análisis de la utilización de la captura por unidad de esfuerzo de pescadilla de red (Cynoscion guatucupa) como índice de abundancia anual. Período 1992-2004
Provedor de dados: 20
Autores: Perrotta, R.G.; Ruarte, C.O.
The stripped weakfish (Cynoscion guatucupa)  caught in Brazil, Uruguay and Argentina (SW Atlantic) has a wide latitudinal distribution (22° S-43° S). In Argentina there are two main fishing areas, the Argentine-Uruguayan Common Fishing Zone and 'El Rincón', southern zone of the Buenos Aires littoral. The importance of the species makes it necessary to define an annual abundance index that would allow to diagnose the state of the stock. The model adjusted to calculate the index is the General Linear Model. The factors used were Year, Quarter, Length, Stratum (4 categories) and sub-areas (5 categories), all statistically significant. The problem generated by the presence in the model of first order interactions that include the Year factor is discussed. The...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Mathematical models; Coastal fisheries; Marine environment; Marine environment; Mathematical models; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_24199; Http://aims.fao.org/aos/agrovoc/c_1696.
Ano: 2009
URL: http://hdl.handle.net/1834/3461

Muestreo de desembarque de caballa (Scomber japonicus) en el puerto de Mar del Plata (38° S) y determinación de niveles de captura en el área El Rincón; período 1989-2003
Provedor de dados: 20
Autores: Perrotta, R.G.; Garciarena, A.D.; Hernandez, D.R.
Chub mackerel caught by the commercial fleet in El Rincón (39°-41° 30’ S) and Mar del Plata (38° S) areas was analyzed. In 2001 and 2002 samples from El Rincón were obtained from landings or collected by scientific observers on board the commercial ships. Samples from Mar del Plata were acquired during the 2001-2002 and 2002-2003 fishing seasons, on board two vessels of the small purse-seine fleet. Landings were mostly adults and only a small fraction of juveniles was observed (&lt; 5%). Length growth parameters from El Rincón samples were estimated, and length-weight and length-age relationships were fitted by Least Squares. The results were as follows: L(mm) = 538.4; k (years-1) = 0.122; t0 (years) = -4.92; Pt = 4*10-7 * Lt 3.536. Natural mortality was...
Tipo: Journal Contribution
Palavras-chave: Landing statistics; Catch/effort; Growth; Commercial fishing; Length-weight relationships; Growth; Http://aims.fao.org/aos/agrovoc/c_3394.
Ano: 2007
URL: http://hdl.handle.net/1834/2516

Características biológicas y de la pesca del savorín Seriolella porosa (Pisces: Centrolophidae) del Mar Argentino
Provedor de dados: 20
Autores: Garciarena, A.D.; Perrotta, R.G.
Length growth parameters were calculated and total length-weight and total length-fork length relationships, which showed no differences between sexes, were fitted for the South Atlantic bream (Seriolella porosa). Length at first maturity was also calculated. The results were as follows: L (mm)= 490.96k years-¹) = 0.154; t0 (years)= -3.915; W(g) = 4*10-6)*TL³.1989; FL(mm) = 0.8917*TL1.0006);L sub 50 (mm)= 290.61. Natural mortality was estimated at 0.274 and limit age at 11 years. Samples were taken during research surveys carried out in 1999 and 2000 in the Argentine Sea (Atlantic SW). Sagittae otoliths of 374 specimen were used for age determination. Total fish length ranged from 226 mm to 550 mm (1-14 years). Commercial landing data of trawl fleets for...
Tipo: Journal Contribution
Palavras-chave: Growth rate; Natural mortality; Length-weight relationships; Catch/effort; Landing statistics; Fishery biology; Fishery resources; Growth rate; Fishery biology; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_16130; Http://aims.fao.org/aos/agrovoc/c_2937; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2002
URL: http://hdl.handle.net/1834/2416

Pesca recreativa en jardines de la reina, Cuba:  caracterización y percepción sobre el estado   de conservación del área.
Provedor de dados: 20
Autores: Figueredo Martín, T.; Pina Amargós, F.; Angulo Valdés, J.; Gómez Fernández, R.
La pesca recreativa es una variedad turística practicada alrededor del mundo, siendo cada vez más preferida la  captura y liberación. Pocos estudios han sido realizados sobre las pesquerías recreativas en Cuba y ninguno  enfocado a las características socio-económicas de la misma.  Los objetivos del presente trabajo son (1)  caracterizar socioeconómicamente las pesquerías recreativas en Jardines de la Reina y (2) evaluar la percepción  de los visitantes sobre la conservación de los recursos naturales del área. Para ello fueron encuestados 93  pescadores recreativos procedentes de 13 países, fundamentalmente de Reina Unido, Canadá, Argentina y  Estados Unidos. La muestra fue dominada por hombres, con edades entre 41 y 50 años, casados y graduados...
Tipo: Journal Contribution
Palavras-chave: Conservation (fishery products); Catch/effort; Socioeconomic aspects; Conservation; Fisheries management.
Ano: 2010
URL: http://hdl.handle.net/1834/4532

Pesca comercial de merluza al sur de 41°S y estimación de índices de abundancia derivados de la flota pesquera
Provedor de dados: 20
Autores: Irusta, G.; Pérez, M.; Renzi, M.A.; Castrucci, R.
The activity of fishing fleets for hake Merluccius hubbsi south of 41°S Argentine Sea, SW Atlantic, is described. In order to establish the standard group of vessels, density indices derived from research cruises and ice-chilling fleets were related. Group four 1,400-1,800 HP related better to the abundance trend. Also, two series of indices associated to different fractions of the population were estimated: juveniles  age 2) and adults age 3-5. Finally, a total catch per unit effort CPUE for the region south of 41°S, which showed a declining trend during the period considered 1991-1997, was calculated.
Tipo: Journal Contribution
Palavras-chave: Commercial fishing; Gadoid fisheries; Catch/effort; Abundance; Fishing vessels statistics.
Ano: 2003
URL: http://hdl.handle.net/1834/2420

Acerca del poder de pesca y capturabilidad en la pesquería de caballa (Scomber japonicus) de Mar del Plata
Provedor de dados: 20
Autores: Perrotta, R.G.
Analyzed in this paper is the structure of the fleet applied to mackerel fishing based at Mar del Plata Port (38° LS); an attempt is also made at establishing the best system for measuring the fishing effort; the changes in catch capability (availability and vulnerability)are duly analyzed. Sampling vessels that allow greater data, particulary by in relation to the fishing effort, are available since the 1983/84 fishing season.
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Catchability; Fishing fleet.
Ano: 1988
URL: http://hdl.handle.net/1834/1959

Situación actual del guariche Ucides occidentalis (Ortmann, 1897) en el estuario del río Chone, Manabí durante abril 2009 – 2010.
Provedor de dados: 20
Autores: Moreno, J.; Ruíz, W.
Durante el período abril 2009 – 2010 se analizó la situación pesquera artesanal del recurso guariche o cangrejo rojo Ucides occidentalis (Ortmann, 1897) en el estuario del Río Chone, considerando desembarques comerciales y su hábitat “in situ”. El esfuerzo total promedio correspondió 84 recolectores/día pesca, con una captura promedio de 36 cangrejos o su equivalente a 6 sartas u atados. Se registró un 90% de ejemplares macho con talla promedio de 7.5 cm de ancho cefalotorácico (AC); mientras que el 10% de ejemplares hembras presento una talla promedio de       6.5 cm AC. El muestreo de densidad poblacional se lo realizo en 36 estaciones correspondiente a las seis localidades cangrejeras ubicadas en el estuario reportando una densidad de 0.7 cangrejos/m2....
Tipo: Journal Contribution
Palavras-chave: Crab fisheries; Landing statistics; Catch/effort; Size-limit regulations; Size composition; Fishery surveys.
Ano: 2010
URL: http://hdl.handle.net/1834/4794

Resultados del monitoreo de la tortuga carey (Eretmochelys imbricata) en los dos sitios de captura comercial: Cocodrilo (Isla de la Juventud) y Nuevitas, Cuba
Provedor de dados: 20
Autores: Medina, Y.; Moncada, F.; 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.
Ano: 2011
URL: http://hdl.handle.net/1834/4145

Preliminary analysis of billfish catch rates in the Indian Ocean.
Provedor de dados: 20
Autores: Campbell, R.A.; Tuck, G.N.
Due to the general lack of targeted fisheries on billfish, the resource status of these species within the Indian Ocean has not been analysed in any previous study and currently remains unknown. Nevertheless, significant quantities of billfish are caught annually in the Indian Ocean and, being generally long lived, these species remain vulnerable to overfishing. In this paper preliminary indices of stock availability are presented for the main billfish species based on the catch and effort data pertaining to the Japanese and Taiwanese Indian Ocean longline fisheries. While the indices need to be treated with some caution (due to problems relating to the accuracy of the catch and effort data, and the fact that changes in catchability have not been factored...
Tipo: Proceedings Paper
Palavras-chave: Catch/effort; Stock assessment; Overfishing; Catchability; Fishing gear.
Ano: 1998
URL: http://hdl.handle.net/1834/58

Seychelles Artisanal Fisheries Statistics for 2004
Provedor de dados: 20
Autores: Robinson, J.; Azemia, R.T.
SFA/R&amp;D/061
Tipo: Report
Palavras-chave: Artisanal fishing; Catch composition; Catch statistics; Catch/effort; Landing statistics; Catch composition; Statistics; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_49978.
Ano: 2005
URL: http://hdl.handle.net/1834/1078

El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior
Provedor de dados: 20
Autores: Sverlij, S.B.; Espinach Ros, A.
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis...
Tipo: Journal Contribution
Palavras-chave: Migrations; Catch/effort; Sex ratio; Size distribution; Scale reading; Growth curves; Reproduction; Stomach content; Sex ratio; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1986
URL: http://hdl.handle.net/1834/2032

La pesquería de besugo (Pagrus pagrus). Análisis de las capturas, esfuerzo nominal y estructura de los desembarques en 2011
Provedor de dados: 20
Autores: García, S.
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...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Landing statistics; Population structure; Coastal fisheries.
Ano: 2013
URL: http://hdl.handle.net/1834/5509

Factores que afectan las tasas de captura de langostino amarillo (Cervimunida johni) en la zona norte de Chile
Provedor de dados: 20
Autores: Wiff, R.; Quiroz, J.C.; Montenegro, C.
An analysis was made of the factors affecting the catch rates of the yellow squat lobster (Cervimunida johni) in Chile’s northern region (26°03’-32°10’S) by reviewing commercial fishing logbooks from 1993 to 2003. Factors evaluated included years, months, depth stratum, fishing areas and fleet characteristics as linear predictors in a generalized linear model (GLM) in order to explain variability in the catch rate. In contrast with other fisheries, with this resource the technical characteristics of the fleet and its’ specialization poorly explain variations in catch rate; temporal factors and their interaction were, however, highly significant. The results of this study, together with the life history of the resource, allow the supposition that...
Tipo: Journal Contribution
Palavras-chave: Modelling; Catch/effort; Crustacean fisheries; Lobster fisheries.
Ano: 2005
URL: http://hdl.handle.net/1834/2070

Seychelles demersal fishery an analysis of data relating to four key demersal species
Provedor de dados: 20
Autores: Mees, C. C.
Seychelles demersal fishery is described based on historic catch and effort data, and on biological studies of four key species: Batrican (Pristipomoides filamentosus), Job Gris (Aprion virescens), Bourgeois (Lutjanus sebae), and Maconde (Epinephelus chlorostigma).  During the period 1985 - 1990 demersal species formed on average 33_310= of the total annual landings of the local fishing fleet.  Schooners and whalers were the most important boat types engaging in this fishery, and more recently, a mother ship dory fishing operation. Demersal species constituted 77_310= of all local fish exports over this period. In 1990 approximately 2,000 tonnes of demersal species were landed of which 500 tonnes were exported.  Lutjanids comprised 62_310= of the demersal...
Tipo: Report
Palavras-chave: Demersal fisheries; Fishery data; Fish catch statistics; Catch/effort; Yield predictions; Catch composition; Pristipomoides filamentosus; Aprion virescens; Lutjanus sebae; Epinephelus chlorostigma.
Ano: 1992
URL: http://hdl.handle.net/1834/5114

Pesca comercial y captura por unidad de esfuerzo de la merluza (Merluccius hubbsi) entre 34º S-41º S durante el período 1986-2005 y evidencias sobre cambios en la distribución y composición por tallas del recurso
Provedor de dados: 20
Autores: Irusta, G.; Castrucci, R.; Simonazzi, M.
The activity of the hake (Merluccius hubbsi) commercial offshore ice chilling fleet and its relation to concentration, distribution and population areas of the stock distributed between 34ºS - 41ºS is described. The catch per unit of effort (CPUE) for the 1986-2005 period was estimated applying the General Linear Model. Data derived from the offshore fishing logs provided by the Argentine Secretary of Agriculture, Farming, Fishing and Food Administration and the information obtained in research cruises carried out in 1994, 1996-2001, 2003-2005 to evaluate the resource population abundance. During the main fishing time in the sector (quarter 2) and up until 1991 the fleet scattered within the Argentine-Uruguayan Common Fishing Zone (SW Atlantic). Later on...
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Commercial fishing; Catch statistics; Fishing effort; Size distribution; Exclusive economic zone; Gadoid fisheries; Marine environment; Marine environment; Fishing effort; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_24027.
Ano: 2009
URL: http://hdl.handle.net/1834/3462

Evaluación del recurso abadejo y recomendaciones sobre su explotación a partir del año 2002
Provedor de dados: 20
Autores: Cordo, H.D.
Ling (Genypterus blacodes) resource was assessed by means of an age structured production model fitted with stock abundance indices from catch per unit effort data (CPUE) obtained from the commercial fishing fleet. Reproductive stock was assessed in the same way with CPUE data from the fishery research vessel. A short-term analysis of collapse risk as a function of 1999 and 2000 fishing mortalities was carried out with the results, and also a long-term analysis with the assumption of a variable fishing mortality (F) with two recruitment hypotheses. Results show that the present state of the Ling resource has worsened with respect to the last assessment. Considering the best of all cases, the Br/Kr relationship decreased from 0.55 to 0.33, indicating that...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Catch/effort; Fishery management; Risks; Gadoid fisheries; Commercial fishing; Stock assessment; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 2007
URL: http://hdl.handle.net/1834/2518

Les crevettes en Mauritanie, biologie et pêche
Provedor de dados: 20
Autores: Diop, M.
Les prises de crevettes au large de la Mauritanie connaissent une évolution en dent de scie depuis 1989. Les captures déclarées sont de 1112 tonnes en 1987 (dont 1099 tonnes pour le seul second semestre). Elles sont composées à 66% de Penaeus spp (espèces côtières). Les espèces &lt;Parapenaeus longirostrus&gt; et Aristeus spp dont les distributions sont plus profondes ont contribué pour 29 et 5% respectivement des captures totales de crevettes en 1987.
Tipo: Journal Contribution
Palavras-chave: Catch composition; Catch/effort; Shrimp fisheries; Catch composition; Http://aims.fao.org/aos/agrovoc/c_1384.
Ano: 1989
URL: http://hdl.handle.net/1834/1145

Standardization of catch per unit of effort for swordfish and billfishes caught by the Japanese longline fishery in the Indian Ocean.
Provedor de dados: 20
Autores: Uozumi, Y.
In the present analysis, CPUEs of swordfish and billfishes are standardized with fine-scale statistics to eliminate some possible biases in the CPUE trend which may be introduced by the factors mentioned above.
Tipo: Proceedings Paper
Palavras-chave: Catch/effort; Longlining; Catching method; Fishing effort.
Ano: 1998
URL: http://hdl.handle.net/1834/57

Aspectos de la pesca de la polaca (Micromesistius australis) por parte de la flota argentina en el período 1989 - 1995
Provedor de dados: 20
Autores: Wöhler, O.C.; Marí, N.R.
Basic aspects concerning southern blue whiting (Micromesistius australis) fishing by the Argentine fleet in the period 1989-1995 are analized. Catch and effort statistics, fleet operation modalities and spatial and temporary characteristics of fishing activities are included. The basic information to perform this analysis was collected from the fishing statistics provided by the Subsecretaría de Agricultura, Ganadería y Pesca of Argentina and from reports of the Observers Program on board of the commercial fleet. It was in 1989, when the first ship for surimi production entered the fishery, that southern blue whiting catches carried out by the Argentine fleet became important. As of 1989 catches increased in a steady way to stabilize at near 100,000 annual...
Tipo: Journal Contribution
Palavras-chave: Catch statistics; Fishing grounds; Catch/effort; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1999
URL: http://hdl.handle.net/1834/2528

Flota pesquera Argentina. Evolucion 1960-1998 con una actualizacion al 2000.
Provedor de dados: 20
Autores: Bertolotti, M.I.; Verazay, G.A.; Pagani, A.N.; Errazti, E.; Buono, J.J.
The analysis of the Argentine fishing fleet (SW Atlantic) evolution as of 1960 allows to explain the major causes of expansion, the crisis in the fisheries and the structural changes of the fleet during the 90's. Different fleet classification criteria focused on fishing capacity, fish landing composition, yields and productivity indices are described. The expansion cycles were associated to the incorporation of fishing vessels, while the 1960-1989 crisis originated in domestic and international economic crisis and changes in the strategy pattern of the fishing countries. The latter was related to overfishing of traditional coastal and demersal fisheries and to the full exploitation of resources such as squid, blue whiting and toothfish incorporated to the...
Tipo: Book Section
Palavras-chave: Fishing vessels; Fishery economics; Fishing vessels statistics; Overfishing; Landing statistics; Catch/effort; Yield; Fishing vessels; Overfishing; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2001
URL: http://hdl.handle.net/1834/2587

Evaluación del abadejo (Genypterus blacodes) en el Atlántico Sudoccidental por medio de modelos de producción dinámicos.
Provedor de dados: 20
Autores: Cordo, H.D.
Two dynamic production models were applied to assess the status of ling Genypterus blacodes stock in the SW Atlantic. The simplest (biomass dynamic model)and a more complex one (structured production model) were fitted with commercial CPUEs as abundance indices. Ling is one of the most important demersal fishes in Argentine waters. It is a demersal fish found between 35°and 55°S that shows the highest concentration in summer, between 42°and 48°S. In winter, schools disperse over the whole range of distribution. Argentine ling fishery started developing in 1986 when catches surpassed 15000 mt/year to stabilize, in recent years, at around 23000 mt/year. The species is caught mainly as by-catch by trawlers with bottom net that direct their effort to hake...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Catch/effort; Mathematical models; Yield; Stock assessment; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24199.
Ano: 2001
URL: http://hdl.handle.net/1834/1869

La pêche industrielle des espèces pélagiques côtières en Mauritanie de 1979 à 1985 - Deuxième partie : la Pêche au chalut pélagique
Provedor de dados: 20
Autores: Josse, E.
Après la mise en place de la ZEE à 200 miles en 1978, la pêche au chalut pélagique s’est développée très rapidement en Mauritanie. Avec un effort de pêche pratiquement multiplié par 10 entre 1979 et 1983. De 1979 à 1986, sept pays ont participé plus ou moins régulièrement à l’exploitation des ressources pélagiques côtières de la ZEE mauritanienne, avec des chalutiers pélagiques de gros tonnage. Trois pays : l’Allemagne de l’Est, la Roumanie et l’URSS ont réalisé, selon les années, entre les ¾ et la totalité de l’effort total, et de 80 à 100% des captures totales. Les captures totales ont été maximales en 1983, avec 470 000 tonnes. Après une baisse en 1984 elles se sont stabilisées en 1985 et 1986 entre 450 000 et 460 000 tonnes. La composition spécifique...
Tipo: Journal Contribution
Palavras-chave: Catch composition; Catch/effort; Coastal fisheries; Commercial fishing; Commercial species; Fishing effort; Fishing fleet; Fishing gear; Pelagic fisheries; Stock assessment; Trawling; Stock assessment; Trawling; Catch composition; Fishing effort; Fishing gear; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_7881; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 1988
URL: http://hdl.handle.net/1834/1171

Seychelles Tuna Bulletin: Year 2001
Provedor de dados: 20
Tipo: Book
Palavras-chave: Catch/effort; Purse seiners; Tuna fisheries; Fishery statistics; Longlining.
Ano: 2002
URL: http://hdl.handle.net/1834/235

Seychelles artisanal fisheries statistics for 1986
Provedor de dados: 20
Autores: 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; Http://aims.fao.org/aos/agrovoc/c_1384.
Ano: 1987
URL: http://hdl.handle.net/1834/1314

Description de l'activité des bateaux industriels de pêche pélagique dans la zone économique exclusive mauritanienne en 1989.
Provedor de dados: 20
Autores: Ould Taleb Ould Sidi, M.M.
Résumé: L’effectif des bateaux de pêche pélagique qui ont opéré dans la zone économique exclusive mauritanienne en 1989 s’élève à 63. L’effort de pêche standard de la flottille chalutière étrangère a atteint 8021 jours de pêche. Les prises effectuées sont de l’ordre de 356.000 tonnes dont 76% réalisés par la flottille de l’Union Soviétique et 23,5% par celle de la Roumanie. La composition spécifique est dominée par les chinchards avec 47%. Les sardinelles représentent environ 18% et la sardine plus de 15%. Les sabres et la rubrique divers occupent respectivement 6,26 et 7 ,40%.
Tipo: Journal Contribution
Palavras-chave: Catch/effort; Pelagic fish.
Ano: 1995
URL: http://hdl.handle.net/1834/254

Pecheur Breton: An analysis of data relating to a mothership dory fishing operation in and around the Exclusive Economic Zone of the Seychelles from October 1992 to May 1993
Provedor de dados: 20
Autores: Grandcourt, E.M.
A mothership/dory fishing operation 'Pecheur Breton' caught 559.8 tonnes of fish in and around the exclusive economic zone of the Seychelles between October 1992 and May 1993. The vessel fished using 12 inboard powered diesel catcher boats which were equipped with echo-sounders and electric fishing reels, two men fished from each boat. Lutjanids were the most common species group in the catch representing (45%) of the total followed by Lethrinids (32%), Serranids (15%) and other species (8%) the majority of which were pelagics. Detailed catch/effort logs were kept for each dory on a daily basis by an experienced Seychelles Fishing Authority technician. The data was analyzed using a FOXBASE programme and the results presented in this report. During three...
Tipo: Report
Palavras-chave: Fishing operations; Catch/effort.
Ano: 1995
URL: http://hdl.handle.net/1834/5121

Atlas demographique des populations de poissons d'eau douce d'Afrique
Provedor de dados: 31
Autores: Moreau,   J.; Palomares,   M.L.D.; Torres,   F.S.B.; Pauly,   Daniel.
Tipo: Report
Palavras-chave: Freshwater fish; Population dynamics; Stock assessment; Growth curves; Catch/effort; Recruitment; Fishery biology; Africa; Resource /Energy Economics and Policy.
Ano: 1995
URL: http://purl.umn.edu/44838