Consulta: subjectFacets:"Http://aims.fao.org/aos/agrovoc/c_24251"
Registros recuperados: 73
Data/hora: 16/06/2024 08:49:09

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

Contribución al estudio biológico-pesquero del pez gallo, Callorhynchus callorhynchus (Linné, 1758) Berg, 1895, en el Golfo San Matías
Provedor de dados: 20
Autores: Di Giácomo, E.E.
Tipo: Theses and Dissertations
Palavras-chave: Taxonomy; Stock assessment; Population structure; Reproduction; Trophic relationships; Taxonomy; Stock assessment; Population structure; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1990
URL: http://hdl.handle.net/1834/4067

Aplicación preliminar del análisis de rendimiento por recluta al efectivo pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías
Provedor de dados: 20
Autores: Morsan, E.M.; González, R.A.
El presente informe ha sido confeccionado con el objeto de asisitir en forma expedita a las Autoridades Provinciales en la adecuación y actualización de las pautas de manejo de la pesquería de merluza común Merluccius hubbsi que se desarrolla en la Jurisdicción Provincial (Golfo San Matías).
Tipo: Report
Palavras-chave: Yield/recruit; Yield predictions; Stock assessment; Fishery management; Stock assessment; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 1998
URL: http://hdl.handle.net/1834/3713

Recomendaciones para el manejo y explotación del recurso pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías durante el año 2000
Provedor de dados: 20
Autores: González, R.G.; Morsan, E.M.
En este informe se aborda el análisis del estado de conservación del efectivo pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías a partir de la metodología desarrollada en el Informe Técnico Nº 2/99 (Análisis de Cohorte de Jones basado en las tallas). Las proyecciones de rendimiento en peso del stock, de la biomasa total y del rendimiento en términos económicos y de huevos por recluta (HPR) para el 2000 se desarrollan aplicando la versión del Análisis del Rendimiento por Recluta de Thompson &amp; Bell)
Tipo: Report
Palavras-chave: Fishery resources; Stock assessment; Fishery management; Recruitment; Yield/recruit; Economic feasibility; Stock assessment; Fishery management; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2000
URL: http://hdl.handle.net/1834/3718

Fecundidad e índice de prerreclutas de merluza en el sector costero norpatagónico
Provedor de dados: 20
Autores: Ehrlich, M.D.; Macchi, G.J.
Hake Merluccius hubbsi fecundity was estimated with the gravimetric method using ovaries with hydrated oocytes without post-ovulatory follicles. Samples were obtained in three research cruises in the Argentine Sea, off Chubut Province, SW of Peninsula Valdes between 42°S and 45°S, near Isla Escondida, during December 1993, 1994 and 1996, time which coincides with the most important reproductive activity. Relative fecundity values were 722 plus or minus 107, 606 plus or minus 60 and 533 plus or minus 26 oocytes per gram of female without ovaries, respectively. Partial fecundity was adjusted to a potential model for total length and weight without ovaries, corresponding: F=0.9988 Lt3.294 and F=197.91 P1.1585 for 1994 and F=6.9785 Lt2.816 and F=552.22 P0.9889...
Tipo: Journal Contribution
Palavras-chave: Fishery surveys; Juveniles; Fecundity; Gadoid fisheries; Stock assessment; Stock assessment; Juveniles; Fecundity; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_25393; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 2003
URL: http://hdl.handle.net/1834/2415

Recent trends in research on Lake Victoria fisheries. Proceedings of the Second EEC Regional Seminar on Recent Trends of Research on Lake Victoria Fisheries, organized and hosted by Kenya Marine and Fisheries Research Institute (KMFRI), 25-27 September 1991, Kisumu, Kenya
Provedor de dados: 20
Autores: Okemwa, E.; Wakwabi, E.; Getabu, A.
Topics on Lake Victoria limnology, benthic fauna, stock assessment, catch assessment survey, gear selectivity, fisheries ecology, fish parasites and marketing economics are covered. Management and conservation of the lake's fisheries and other aquatic resources are discussed. Dialogue between fishermen, scientists and administrators is stressed, measures to be undertaken are addressed and further research is recommended.
Tipo: Proceedings Paper
Palavras-chave: Fishery management; Freshwater fish; Inland fisheries; Lake fisheries; Limnology; Resource management; Stock assessment; Zoobenthos; Fishery management; Lake fisheries; Limnology; Stock assessment; Inland fisheries; Resource management; Zoobenthos; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4159; Http://aims.fao.org/aos/agrovoc/c_4343; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_3873; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 1994
URL: http://hdl.handle.net/1834/2125

Evaluación hidroacústica del reclutamiento de anchoveta y sardina común entre la V y X Regiones, año 2003
Provedor de dados: 20
Autores: Saavedra, A.; Gálvez, P.; Barria, P.; Espejo, M.; Barbieri, M.A.; Núñez, S.; Ortiz, J.; Torres, P.; Véjar, F.; Molina, E.; Cerna, F.; López, A.A.; Bustos, L.
Se presentan los resultados de la evaluación acústica de la biomasa, abundancia y distribución espacial; oferta ambiental de alimento, y las condiciones oceanográficas físicas asociadas a la anchoveta (Engraulis ringens) y sardina común (Strangomera bentincki) en el período de reclutamiento de enero del año 2004 entre Topocalma (33º 50' S) y Punta Galera (40º 00' S).
Tipo: Report
Palavras-chave: Biomass; Abundance; Geographical distribution; Environmental conditions; Stock assessment; Echo surveys; Biomass; Geographical distribution; Stock assessment; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2004
URL: http://hdl.handle.net/1834/1738

Evaluación de la polaca (Micromesistius australis) del Atlántico sudoccidental, período 1987-1999.
Provedor de dados: 20
Autores: Wöhler, O.C.; Cordo, H.D.; Cassia, M.C.; Hansen, J.E.
Taking into account the commercial catches by the Argentine fleet and other fleets that operated around Malvinas Islands (SW Atlantic) in the 1987-1999 period, the current state of southern blue whiting (Micromesistius australis) is assessed. A sequential analysis (Cohort Analysis) tuned, in an ADAPT conceptual framework with six independent indices of abundance, was performed for the southern blue whiting stock of the SW Atlantic. Commercial catch data of the Argentinian fleet and other fleets that operate around Malvinas Islands were used.The indices included catch per unit of effort of different fleets and data from Argentine-British research surveys. The analysis showed that the decreasing trend in biomass observed in previous studies went on during...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishing mortality; Biomass; Demersal fisheries; Statistical analysis; Gadoid fisheries; Stock assessment; Biomass; Demersal fisheries; Statistical analysis; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_7378.
Ano: 2002
URL: http://hdl.handle.net/1834/2546

Modificación del análisis de cohortes de Pope para extender su aplicación a un rango más amplio de valores de mortalidad natural y mortalidad por pesca
Provedor de dados: 20
Autores: Hernández, D.R.; Perrotta, R.G.
Pope's Cohorts Analysis was modified to extend its application to a wider range of natural mortality, M and fishing mortality, F rate values. The modified method maintains the simplicity of the one established by Pope and does not require to resolve any non lineal equation in each cohort reconstruction process. The relative errors obtained when estimating the number of individuals per age (maximum and mean in absolute value) showed acceptable levels within the five domains (M and F pairs of values) analyzed in this work. The new method can be adapted to a particular situation (M and F values range) simply solving an optimization problem (minimization of the maximum relative error absolute value) easily achieved using a calculation sheet or considering the...
Tipo: Journal Contribution
Palavras-chave: Fishing mortality; Natural mortality; Stock assessment; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2008
URL: http://hdl.handle.net/1834/3143

Evaluación pesquera del bacalao austral (Salilota australis) del Atlántico Sudoccidental
Provedor de dados: 20
Autores: Wöhler, O.C.; Cassia, M.C.; Hansen, J.E.
Information about the austral cod Salilota australis caught in the Patagonian shelf including the area around Malvinas Islands (SW Atlantic)as well as some data from annual research surveys carried out as of 1992 to 1998 were analyzed. On this basis, the fishery was studied and the abundance of the stock inhabiting the area under Argentine control was estimated. To calculate the optimum yield as a function of both age-at-first catch and fishing mortality, the Yield-per-Recruit model was used. Some biological reference points were also identified and an exploitation strategy based on low risk of collapse recommended. Austral cod landings, although small, showed an increasing trend as of 1990 that reached a maximum of 14,900 tons in 1998. Most of the catches...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Landing statistics; Fishing mortality; Fishing grounds; Risks; Demersal fisheries; Biomass; Stock assessment; Demersal fisheries; Biomass; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 2001
URL: http://hdl.handle.net/1834/1866

Evaluaciones hidroacústicas de merluza común, año 2006
Provedor de dados: 20
Autores: Lillo, S.; Bahamonde, R.; Olivares, J.; Saavedra, J.; Molina, E.; Díaz, E.; Braun, M.; Núñez, S.; Navarro, E.; Vásquez, S.; Sepúlveda, A.
Este documento contiene el informe final del proyecto FIP 2006-03, realizado por el Instituto de Fomento Pesquero como unidad ejecutora y el Instituto de Investigación Pesquera de la Octava Región S.A. como subcontratada. El objetivo general del proyecto fue evaluar el stock de la merluza común (Merluccius gayi gayi) y estimar las características biológicas, pesqueras y oceanográficas relevantes del recurso. Metodológicamente, se realizaron dos cruceros de prospección, uno entre el 6 de abril y el 17 de mayo y el otro desde el 10 de julio al 19 de agosto del 2006, ambos cubrieron una zona de aprox. 13.000 millas náuticas cuadradas que correspondieron al área de la plataforma continental entre las latitudes 29º 10’ S y los 42º 00’ S y desde la costa hasta...
Tipo: Report
Palavras-chave: Stock assessment; Echo surveys; Oceanographic surveys; Biological data; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2007
URL: http://hdl.handle.net/1834/1853

Evaluation et cartographie des stocks de coquillages dans la partie marine de la région de Zarzis
Provedor de dados: 20
Autores: Ben Abdallah, O.; Ben Hadj Hamida, N.; Jarboui, O.
The experimental survey done, in august 2005, in coastal marine zone (0 - 20 m) of Zarzis showed the existence of numerous species of shellfishes of which Tricolia speciosa, Smaragdia viridis, Nassarius incrassatus, Cerithium vulgatum and Gibbulla umbilicaris are the most important gasteropods and, Pinctada radiate and Donax trunculus the main bivalves. The biomasses estimation, based on the method of swept area, in the studied zone showed that P. radiate is the most abundant species with about 20 000 tones, followed by C. vulgatum (7 645 tones) and T. speciosa (more than 1 000 tones). The Donax trunculus biomass is very low with only 13 tones. Finally, the abundance indexes distribution cartography permitted us to note that it varies from one species to...
Tipo: Journal Contribution
Palavras-chave: Biomass; Cartography; Geographical distribution; Marine crustaceans; Shellfish; Stock assessment; Biomass; Geographical distribution; Shellfish; Stock assessment; Cartography; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_7033; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_1344.
Ano: 2006
URL: http://hdl.handle.net/1834/4272

Estudios sobre reproducción y fecundidad de la polaca (Micromesistius australis Norma 1937)en el Mar Argentino
Provedor de dados: 20
Autores: Sánchez, R.P.; de Ciechomski, J.D.; Acha, E.M.
An analysis is presented of reproduction aspects of Argentine Sea blue whiting. The species spawns in the study area mostly during August and September, although some spawners have been detected even in November. Total length at 50-per-cent maturity was 35,4 cm for the males and 38.0 for the females. Significant differences between the length of maturity for individuals of the continental shelf compared to those of the slope, have been obtained. The southern blue whiting is a discontinuous spawner, showing one annual reproduction peak. Fecundity was investigated on the basis of samples collected in 1978 by the RV"Walther Herwig" and "Shinkai Maru". A significant positive correlation was also observed at relating oocyte dry weight and gonad factor, whereas...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Sexual maturity; Stock assessment; Stock assessment; Reproduction; Fecundity; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1986
URL: http://hdl.handle.net/1834/2028

Evaluación del estado de explotación de la merluza de cola Macruronus magellanicus en la plataforma sur-argentina.
Provedor de dados: 20
Autores: Prenski, L.B.; Ehrhardt, N.M.; Legault, C.
Hoki, Macruronus magellanicus, is an important resource in the Argentinean multispecific southern demersal fishery. The species is distributed South of 46°S between the 50 and 200 meter isobaths. Thesouthern demersal fishery was almost nil prior to 1987, becoming more relevant toward the end of the 1980's. International fleets operating through several fishery agreement were those of the ex-Soviet Union,Bulgaria and Japan. Research on the abundance of hoki resources were initiated in the early 1970's; however, fishery research have been noticeably enhanced since 1992. In this study existing information on the Argentinean hoki fishery is integrated and an assessment of the status of exploitation of the species is carried out.As a result of the analyses, a...
Tipo: Journal Contribution
Palavras-chave: Fishery management; Mortality; Abundance; Stock assessment; Gadoid fisheries; Demersal fisheries; Adaptations; Fishery management; Stock assessment; Demersal fisheries; Mortality; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1997
URL: http://hdl.handle.net/1834/1924

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

Evaluación hidroacústica de merluza común, año 2004
Provedor de dados: 20
Autores: Lillo, S.; Olivares, J.; Braun, M.; Díaz, E.; Núñez, S.; Saavedra, A.; Saavedra, J.; Tascheri, R.
El presente informe contiene los resultados del proyecto FIP 2004-09, el que tuvo como objetivo central cuantificar el stock (estimar la distribución y abundancia) y determinar las características biológica, pesquera y oceanográfica relevantes del recurso. Metodológicamente, en primer lugar se realizó un crucero de prospección en el B/C Abate Molina, con el fin de recabar los datos acústicos, pesqueros y oceanográficos; en segundo lugar, el análisis de los datos para proceder con la evaluación del recurso. El crucero de prospección acústica que se llevó a cabo desde el 2 de julio al 12 de agosto de 2004 dentro del área de la pesquería, efectuándose 139 lances de pesca, 80 transectas acústicas y 92 estaciones oceanográficas.
Tipo: Report
Palavras-chave: Stock assessment; Geographical distribution; Abundance; Echo surveys; Stock assessment; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2005
URL: http://hdl.handle.net/1834/1843

Consideraciones sobre la explotación del mejillón (Mytilus platensis)en la costa bonaerense. Resultados de la campaña de prospección del "Banco Faro Querandí" (junio 1981)
Provedor de dados: 20
Autores: Lasta, M.L.; Parma, A.M.; Pascual, M.S.; Zampatti, E.A.
The fishing of the mussel (Mytilus edulis platensis)off the Buenos Aires coast was alternatively carried out over two main grounds: "Faro Querandí" and "Quequén". The fluctuations of fishing periods on these grounds must have been determined by economic considerations. An abandoned bed may be considere, for practical purposes, depleted.The understanding of the dynamics of this spatially distributed stock could enable us to link more closely the biological cycles with those of the fishing activity. Rotative fishing is suggested as a managment strategy for this fishery.
Tipo: Journal Contribution
Palavras-chave: Mussel fisheries; Stock assessment; Fishing grounds; Stock assessment; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1986
URL: http://hdl.handle.net/1834/2030

Sustentabilidad de la explotacion del gatuzo Mustelus schmitti, en el ecosistema costero bonaerense (34 - 42°S)
Provedor de dados: 20
Autores: Cortés, F.
The life history of Chondrichthyans results in a low capacity to recover from the fishery human impact, Mustelus schmitti is the most landing shark in Argentina (SW Atlantic)where reductions in the abundance have been detected. The sustainability of M. schmitti to exploitation using a demographic analysis, was examined. The intrinsic rate of population increase (r)and extinction risk under several harvesting strategies were estimated. For this purpose a stage-structured female-only matrix model was applied, considering the mortality and reproductive parameters to each stage. The estimate of length at maturity from the logistic curve was 56.04 cm. The fertility per female ranged between 1 and 15 pups and it was increased with total length. The Mortality...
Tipo: Theses and Dissertations
Palavras-chave: Exploitation; Natural mortality; Shark fisheries; Stock assessment; Population structure; Stock assessment; Population structure; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 2007
URL: http://hdl.handle.net/1834/2597

Réactualisation des évaluations du stock de la crevette,Penoeus kerathurus (Forskal, 1775), du golf de Gabès, Tunisie
Provedor de dados: 20
Autores: Jawadi, G.; Ben Mariem, S.
تـم إعداد قاعدة بيانات شملت خاصة بيانات الأطوال و الثوابت البيولوجية  للقمبري الملكي المستغل بمنطقة خليج قابس و ذلك لتحبين تقييم المخزون بواسطة النماذج التحليلية لهذا النوع. و ارتكزت النماذج التحليلية التي اعتمدت في هذه الدراسة على تحليل أجيال الأطوال و إنتاجية الانتدابات. و لقد تم هذا العمل في إطار نشاط مختبر الأحياء البحرية بالمعهد الوطني لعلوم و تكنولوجيا البحار ضمن البرنامج الوطني لتقييم الثروة السمكية. و بينت النتائج ما يلي: -  أن مخزون القمبري الملكي في حالة استغلال قريبة من المثلى و أن النفوق الناتج عن الصيد معتدلا و يستهدف القسم البالغ من المخزون. - كل تخفيض في مستوى مجهود الصيد الحالي ينجر عنه نقصان في الإنتاج المستدام للمصايد. بينما  تتحمل هذه المصايد زيادة في مجهود الصيد لكن الربحية المستدامة في الإنتاج تبقي ضعيفة. - إن الزيادة في الحجم الأدنى...
Tipo: Journal Contribution
Palavras-chave: Penaeus kerathurus; Benthos; Biomass; Fishery management; Fishing mortality; Shrimp fisheries; Stock assessment; Benthos; Biomass; Fishery management; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2007
URL: http://hdl.handle.net/1834/4150

Evaluación del stock desovante de merluza del sur y merluza de cola en la zona sur austral, año 2004
Provedor de dados: 20
Autores: Lillo, S.; Céspedes, R.; Ojeda, V.; Balbontín, F.; Bravo, R.; Saavedra, A.; Barbieri, M.A.; Vera, C.
El presente informe contiene los resultados finales del proyecto FIP 2004-07, licitado y financiado por el Fondo de Investigación Pesquera (FIP). Dichos resultados dicen relación con cuantificar el stock desovante de ambos recursos presentes en la zona de aguas exteriores de las regiones X y XI, así como también determinar su distribución, abundancia, además de las características biológicas y pesqueras relevantes.
Tipo: Report
Palavras-chave: Spawning populations; Stock assessment; Geographical distribution; Abundance; Biological data; Stock assessment; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2005
URL: http://hdl.handle.net/1834/1842

Abondonce relative et estimation de la biomasse des petits pelagiques des eaux tunisiennes
Provedor de dados: 20
Autores: Hattour, A.; Ben Abdallah, L.; Guennegan, Y.
Within the frame of the National Program (PNM), 'Assessment of Marine Tunisian Resources' (1996-1999), two prospecting surveys on small pelagic fishes, have been led in narrow collaboration with French Institute IFREMER. Their objectives were to specify the relative fishes abundance, their spatial-temporal variability but also to quantify the maximum sustainable yield (MSY) of this resource. A third important goal was to familiarize a Tunisian scientist team, with numerical methods and data processing used during the cruises (reading of echograms, treatments of data, etc.) in stocks assessment. It is known that the indirect stocks assessment methods of small pelagic species is not reliable, reason for which we opted to apply echo - integration techniques....
Tipo: Journal Contribution
Palavras-chave: Abundance; Biomass; Fishery surveys; Pelagic fisheries; Potential yield; Stock assessment; Biomass; Stock assessment; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2004
URL: http://hdl.handle.net/1834/4237

Evaluación del stock desovante de merluza del sur y merluza de cola en la zona sur-austral, año 2003. Informe final corregido
Provedor de dados: 20
Autores: Lillo, S.; Céspedes, R.; Balbontín, F.; Ojeda, V.; Saavedra, A.
El presente informe contiene los resultados finales del proyecto FIP N° 2003-09: “Evaluación hidroacústica de merluza del sur y merluza de cola, 2003” licitado y financiado por el Fondo de Investigación Pesquera (FIP). Dichos resultados dicen relación con cuantificar el stock desovante de ambos recursos presentes en la zona de aguas exteriores de las regiones X y XI, así como también determinar su distribución, abundancia, como además las características biológicas y pesqueras relevantes. Metodológicamente, en primer lugar se realizó un crucero de prospección en el B/C “Abate Molina”, con el fin de recabar los datos acústicos, pesqueros y biológicos; y en segundo lugar se procedió a procesar y analizar los datos para evaluar ambos recursos precitados. El...
Tipo: Report
Palavras-chave: Stock assessment; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2004
URL: http://hdl.handle.net/1834/1697

Report of the INIDEP working group on assessment of hake (Merluccius hubbsi) north of 48° S (Southwest Atlantic Ocean)
Provedor de dados: 20
Autores: Bezzi, S.I.; Cañete, G.R.; Pérez, M.; Renzi, M.A.; Lassen, H.
The assessment covers hake between 34° and 48°S (Argentina and Uruguay), excluding Golfo San Matías. Total international landings and Argentine catch-at-age and effort data available for the 1983-1991 period allowed an analytical assessment. Tunning of the VPA was made using Laurec-Shepherd analysis and Extended Survivor analysis. The results of these analysis are congruent with the information about the state of the stock. VPA biomass estimates are aound 2.1 and 2.7 mill. Tonnes, which are similar to those calculated through surveys. The Spawning Stock Biomass estimated for 1991 is considered to be within limits where the stock shows stable recruitment. At the present effort level, yield and Spawning Stock Biomass appear to remain stable. Management...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Yield; Fishery management; Stock assessment; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 1994
URL: http://hdl.handle.net/1834/2554

Evolution et activité des principales flottilles industrielles démersales en Mauritanie depuis 1980
Provedor de dados: 20
Autores: Girardin, M.
L’évolution (1980-1987) des diverses flottes démersales de chalutiers essentiellement : congélateurs céphalopodiers, glaciers non spécialisés, glaciers spécialisés (merlu – crevettes) est décrite. Les données de débarquement, fragmentaires pour certaines pêcheries et/ou non encore exploitées en détail, concernent les années 1984, 1986 et 1987 pour les glaciers non spécialisés et, uniquement 1987 pour les autres flottilles. A partir de ces informations relatives à l’effort de pêche et aux débarquements, les tendances générales et les résultats de ces flottilles sont analysés.
Tipo: Journal Contribution
Palavras-chave: Cephalopod fisheries; Commercial fishing; Fishery resources; Fishing effort; Fishing gear; Fishing vessels; Stock assessment; Demersal fisheries; Stock assessment; Fishery resources; Fishing effort; Fishing gear; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2946; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 1988
URL: http://hdl.handle.net/1834/1172

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

Programa temporal de evaluación hidroacústica de merluza del sur en aguas interiores de la X y XI Regiones, año 2002. Informe final corregido
Provedor de dados: 20
Autores: Lillo, S.; Céspedes, R.; Barbieri, M.A.; Saavedra, A.; Gálvez, P.
Se presentan los resultados de la evaluación de la biomasa y la distribución espacial de la merluza del sur (Merluccius australis), estructurado por tallas y edad en las aguas interiores de la X y XI Regiones aplicando el método hidroacústico. También se estima la abundancia relativa y la importancia de la fauna acompañante proveniente de los lances de pesca con arrastre a mediagua. Con la información recolectada en el Crucero y en la pesquería se plantea un modelo de dinámica espacio temporal del stock. Los datos fueron colectados en dos cruceros de prospección realizados a bordo del B/C “Abate Molina”, entre el 4 y 18 de febrero (verano) y el desde el 1 al 14 de septiembre del 2003 (invierno). Los resultados mostraron que la merluza del sur era el...
Tipo: Report
Palavras-chave: Population structure; Stock assessment; Age composition; Biomass; Geographical distribution; Body size; Acoustic equipment; Population structure; Stock assessment; Age composition; Biomass; Geographical distribution; Body size; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_29093; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_35330.
Ano: 2004
URL: http://hdl.handle.net/1834/1696

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

Situación de la pesquería del recurso almeja (Venus antiqua) en la X región. Investigación situación pesquerías bentónicas, 2006
Provedor de dados: 20
Autores: Barahona T., N.; González Y., J.
El objetivo de esta investigación es establecer el estado de la pesquería del recurso almeja en la X región, en función de la tendencia en los indicadores pesqueros relevantes, con el propósito de disponer de una visión diagnóstica para el manejo de la pesquería.
Tipo: Report
Palavras-chave: Benthic environment; Clam fisheries; Stock assessment; Stock assessment; Benthic environment; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_877.
Ano: 2007
URL: http://hdl.handle.net/1834/4109

Análisis y diagnóstico del diseño de muestreo de las campañas de evaluación de merluza (Merluccius hubbsi) al norte y al sur de los 41°S (Zona Comun de Pesca Argentino-Uruguaya y Mar Argentino). Años 1996-1999
Provedor de dados: 20
Autores: Hernandez, D.R.; Bezzi, S.I.; Ibañez, P.M.
Gain contribution by stratification in hake (Merluccius hubbsi) biomass estimation with respect to a simple random sampling based on the same sample size is analyzed. Considering as objective hake biomass assessment, curves which relate precision reached in estimations to the sample size are established. Data were from total hake biomass surveys carried out from 1996 through 1999 hake management units distributed North and South of 41°S Argentine Sea are analyzed separately. Stratification used at present allows to obtain very variable gains in precision associated to biomass with estimations, in the North management unit, with a maximun of 88 in 1996 and no gain in 1997. The South management unit presents also variable results but always with important...
Tipo: Journal Contribution
Palavras-chave: Gadoid fisheries; Fishery surveys; Biomass; Statistical sampling; Stock assessment; Biomass; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2003
URL: http://hdl.handle.net/1834/2401

L'anchois ( engraulis encrasicolus) des cotes nord de la Tunisie : reproduction et exploitation
Provedor de dados: 20
Autores: Gaamour, A.; Khemiri, S.; Mili, S.; Ben Abdallah, L.
The reproduction parameters necessary for stock management and catch analysis of anchovy in the North region of Tunisia were studied. The global sex-ratio is close to 1, special caution should be taken using this parameter as it is size dependant. Mean reproduction period extends from April to October. However within this period individuals of population have different spawning and maturation. The size at first sexual maturity Lm50 is about 7.3cm. In the North region of Tunisia, the anchovy landings are lower than the exploitable biomass, therefore the anchovy is an under-exploitable species in this region
Tipo: Journal Contribution
Palavras-chave: Engraulis encrasicolus; Clupeoid fisheries; Catching methods; Fishery management; Reproduction; Sex ratio; Sexual maturity; Spawning; Stock assessment; Fishery management; Spawning; Stock assessment; Reproduction; Sex ratio; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2004
URL: http://hdl.handle.net/1834/4236

El savorin Seriolella porosa como un recurso estacional en el Golfo San Matias, Argentina
Provedor de dados: 20
Autores: Perier, M.R.; Di Giácomo, E.E.
The San Matias Gulf (Argentine Sea) fishery was historically developed and based on the catching of a target species: the common hake    Merluccius hubbsi. There are also other marketable species such as the savorin Seriolella porosa. The presence of this species in the gulf is characterized by its abundance, population structure and biology. The material used was derived from three information sources: fishing survey cruises, landing samplings and record of the fishing activity.The results obtained allowed to delimit a spawning ground and a nursery area. The relative abundance of the resource showed seasonal variations with the highest values in August. The captured range size was 19-59 cm for females and 19-56 cm for males. The first sexual maturity was...
Tipo: Journal Contribution
Palavras-chave: Population structure; Spawning grounds; Spawning seasons; Abundance; Fishery management; Stock assessment; Population structure; Fishery management; Stock assessment; Spawning grounds; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_7277.
Ano: 2002
URL: http://hdl.handle.net/1834/1701

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

Evaluación hidroacústica del stock parental de merluza de tres aletas en su unidad de pesquería, año 2005
Provedor de dados: 20
Autores: Saavedra, A.; Correa, V.; Céspedes, R.; Ojeda, V.; Adasme, L.; Díaz, E.; Oliva, J.; Rojas, P.
El presente estudio tiene como objetivo evaluar el stock de merluza de tres aletas (Micromesistius australis) a través del método hidroacústico, entre las latitudes 47º y 51º S. Como parte del proyecto se realizó entre el 13 y el 22 de agosto de 2005 a bordo del B/F Unzen un crucero de prospección orientado a evaluar mediante un método de evaluación directa (evaluación acústica) su biomasa, abundancia y distribución, estimar la importancia relativa de la fauna acompañante, condiciones reproductivas y tróficas del stock y realizar un análisis de las agregaciones detectadas durante el crucero. Durante el estudio se realizaron 41 lances de pesca de reconocimiento (23 positivos) y 49 transectas acústicas.
Tipo: Report
Palavras-chave: Stock assessment; Echo surveys; Abundance; Biomass; Stock assessment; Biomass; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2006
URL: http://hdl.handle.net/1834/1848

Recomendaciones para el manejo y explotación del recurso pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías durante el año 1999
Provedor de dados: 20
Autores: González, R.A.; Morsan, E.M.
En este informe se aborda el análisis del estado de conservación del efectivo pesquero de merluza común (Merluccius hubbsi) del Golfo San Matías a partir de la aplicación de métodos del tipo analítico (Análisis de Cohorte). A partir de este diagnóstico (estimaciones de las tasas de mortalidad por pesca anual y del número de reclutas retrocalculado para el año 1998), se realizan proyecciones del rendimiento en peso del stock, de la biomasa total y del rendimiento en términos económicos, aplicando para ello una versión del Análisis de Rendimiento por Recluta
Tipo: Report
Palavras-chave: Fishery management; Stock assessment; Yield/recruit; Recruitment; Mortality; Economic feasibility; Fishery management; Stock assessment; Mortality; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1999
URL: http://hdl.handle.net/1834/3721

Evaluación hidroacústica del machuelo (Opisthonema oglinum) y la sardina (Sardinella aurita), en la zona norte del Caribe colombiano, durante julio-agosto y diciembre de 1997
Provedor de dados: 20
Autores: Páramo, J.E.; Viaña, J.E.
The objective of the present work was to assess the biomass of Atlantic thread herring (Opisthonema oglin1lm) and the Spanish sardine (Sardinella aurita) in the north area of the Colombian Caribbean sea by means of two acoustic surveys (one in July-August and other in December, 1997). The scientific echosounder used for both surveys was the SIMRAD EK500. Emphasis was made on Atlantic thread herring and Spanish sardine because these small pelagic fish have been the most abundant in previous studies in this area. Systematic sampling using parallel transects perpendicular to the coast was carried out. The transect spacing used was 12 nautical miles. The Elementary Sampling Distance Unit (ESDU) was set in 1 nm. In order to know about the species composition...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2002
URL: http://hdl.handle.net/1834/3117

La praire  (&lt;Venus rosalina&gt;) à l'Ouest du Banc d'Arguin (Mauritanie) : évaluation des stocks et dynamique des populations.
Provedor de dados: 20
Autores: Diop, M.
Ce travail est consacré à l’étude du banc à &lt;Venus rosalina&gt; situé à l’ouest du Banc d’Arguin (Mauritanie). Ce gisement est d’un intérêt économique certain, puisque la biomasse  estimée se situe entre 1,3 et 2,8 millions de tonnes. Après une présentation des résultats obtenus sur les paramètres biologiques essentiels, une approche dynamique de l’étude de la population a été réalisée. Ainsi, en retenant quatre hypothèses de mortalité naturelle, les courbes de rendement par recrue ont été construites. Les productions annuelles potentielles ont pu être calculées sous deux hypothèses d’âge à la première capture et en fixant l’effort de pêche au niveau FO.1. Elles se situeraient en moyenne à 300.000 tonnes, mais avec une forte variabilité liée aux...
Tipo: Journal Contribution
Palavras-chave: Marine molluscs; Population dynamics; Stock assessment; Seashells; Stock assessment; Population dynamics; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6111.
Ano: 1988
URL: http://hdl.handle.net/1834/1187

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

Evaluación del stock desovante de anchoveta y sardina común entre la V y X Regiones, año 2003. Informe final corregido
Provedor de dados: 20
Autores: Bernal, C.; Canales, M.; Catasti, V.; Sepúlveda, A.; Ruíz, P.; Alarcón, R.; Núñez, S.; Oyarzún, C.; Gazitúa, S.; Claramunt, G.; Herrera, G.
Se evalúan los stocks desovantes de anchoveta y sardina común mediante la aplicación del método de la producción diaria de huevos, durante la época de máxima actividad reproductiva del año 2003. Se diseñó un crucero de recolección de huevos y se efectuaron capturas de adultos de ambas especies entre la V (33°10’S) y X (41°20’S) Regiones. En la región costera entre la VIII y X Regiones, la condición reproductiva fue monitoreada a través de indicadores macroscópicos (IGS y estados de madurez sexual), indicando que ambas especies habrían iniciado su actividad reproductiva a partir de julio de 2003, con un máximo de actividad observado en septiembre para ambas especies. Desde la flota artesanal con puerto base en Calbuco, se obtuvieron hembras de sardina común...
Tipo: Report
Palavras-chave: Stock assessment; Clupeoid fisheries; Fish eggs; Biomass; Spawning; Spawning populations; Stock assessment; Biomass; Spawning; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_14490.
Ano: 2004
URL: http://hdl.handle.net/1834/1695

Patrones de distribución espacio-temporal de los estadíos embrionarios y larvales de la anchoíta (Engraulis anchoita Hubbs &amp; Marini) a micro y macro-escala. Su relación con la supervivencia
Provedor de dados: 20
Autores: Sánchez, R.P.
This dissertation is focused on the study of implications of spatial patterns on survival of eggs and larvae and subsequent recruitment of the SW Atlantic anchovy, Engraulis anchoita. The study of distribution patterns is encompassed within the conceptual framework of the analysis of reproductive strategies of marine bony fish, as adaptations that enable them to cope with and actively exploit environmental variability, regulating their abundance and avoiding extinction. The SW Atlantic anchovy, is ideally suitable for studies on reproductive biology and recruitment on a comparative basis. Its spawning and nursery grounds are located in very diverse ecosystems. This variety refers to their physico-chemical properties, carrying capacity, the influence of...
Tipo: Theses and Dissertations
Palavras-chave: Fish eggs; Fish larvae; Recruitment; Ichthyoplankton; Biomass; Reproduction; Developmental stages; Mortality; Stock assessment; Environmental conditions; Biomass; Developmental stages; Stock assessment; Fish larvae; Reproduction; Mortality; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1995
URL: http://hdl.handle.net/1834/1491

Síntesis de las evaluaciones y sugerencias de manejo efectuadas sobre el recurso merluza (Merluccius hubbsi) entre el año 1986 y mayo de 1997.
Provedor de dados: 20
Autores: Bezzi, S.I.
Hake (Merluccius hubbsi) stock assessments and management recommendations made as of 1986 for the Argentine Sea, are summarized. The surplus production models used allowed to diagnose an overdimensioned fleet and to establish that, as of 1983, population densities were lower than the optimum values. In 1990 it was mentioned that total landings exceeded the Maximum Sustainable Yield and that the fishing effort was above the optimum exploitation level. The Virtual Population Analysis was first applied in 1993 and, for the 1986-1991 period, a 25. increase in fishing mortality, significant reductions of total and reproductive biomasses and a first catch length of 25 cm were detected. Besides, proposals were made to enhance accuracy of future assessments. In...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Yield; Overfishing; Risks; Stock assessment; Fishery management; Overfishing; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2000
URL: http://hdl.handle.net/1834/2533

Evaluación de la merluza (Merluccius hubbsi) en julio y agosto de 1994, entre 34º y 36ºS del Atlántico sudoccidental.
Provedor de dados: 20
Autores: Villarino, M.F.; Simonazzi, M.A.; Bambill, G.A.; Ibañez, P.M.; Castrucci, R.; Reta, R.
This report contains the objectives, data collected and results from a hake assessment survey carried out in the Argentine Sea between 34° and 46° S, during July and August 1994, on board of the R/Vs "Dr. E. L. Holmberg" and "Cap. Oca Balda". The main objectives of the survey were: 1) to estimate total biomass and total abundance per age class; 2) to study the size and age composition; 3) to define the maturity ogive per size and age; 4) to quantitatively determine cannibalism and predation indexes. The area covered by the survey where 149 trawls and 184 oceanographic stations were performed was close to 100,440 nm2 . Hake biomass between 34° and 46° S was estimated in 1,105,284 tons and the confidence interval at 95.  was ± 23.12. . Most of the biomass...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Abundance; Biomass; Fishery surveys; Population structure; Stock assessment; Biomass; Population structure; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 2000
URL: http://hdl.handle.net/1834/2591

Evaluación hidroacústica del stock parental de merluza de tres aletas en su unidad de pesquería, año 2003. Informe final corregido
Provedor de dados: 20
Autores: Lillo, S.; Céspedes, R.; Díaz, E.; Ojeda, V.
El presente estudio tiene como objetivo evaluar el stock de merluza de tres aletas (Micromesistius australis) a través del método hidroacústico, entre las latitudes 47º y 51º Sur. Como parte del proyecto, se realizó entre el 2 y el 15 de agosto del 2003 a bordo del B/C “Abate Molina” un crucero de prospección dirigido a evaluar mediante un método de evaluación directa (evaluación acústica) su biomasa, abundancia y distribución, estimar la importancia relativa de la fauna acompañante, condiciones reproductivas y tróficas del stock. Durante el estudio se realizaron 13 lances de pesca y 49 transectas acústicas. Los resultados muestran que la merluza de tres aletas se distribuyó asociada al borde de la plataforma y talud continental, con una biomasa estimada...
Tipo: Report
Palavras-chave: Stock assessment; Biomass; Population structure; Age composition; Geographical distribution; Acoustic equipment; Stock assessment; Biomass; Population structure; Age composition; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_29093; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2004
URL: http://hdl.handle.net/1834/1698

Evaluación directa del langostino colorado y langostino amarillo entre la II y VIII Regiones, año 2003
Provedor de dados: 20
Autores: Leiva, B.; Canales, C.; Barbieri, M.A.; Cortez, J.; Quiroz, J.C.; Arana, P.; Guerrero, A.; Ahumada, M.; Melo, T.; Queirolo, D.; Hurtado, C.; Gálvez, P.; Molina, E.
El Proyecto FIP 2003-31 contempló cruceros de prospección los cuales fueron desarrollados en el período comprendido entre el 17 de agosto y el 27 de septiembre de 2003 y cuyo fin estuvo dirigido a la estimación, mediante evaluación directa, del nivel de biomasa y abundancia del langostino colorado (Pleuroncodes monodon) y langostino amarillo (Cervimunida johni) entre las Regiones II y VIII
Tipo: Report
Palavras-chave: Stock assessment; Crustacean fisheries; Biomass; Abundance; Stock assessment; Biomass; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2004
URL: http://hdl.handle.net/1834/1733

Modelo de optimización para el cálculo de la cuota de captura de langostino amarillo
Provedor de dados: 20
Autores: Albornoz, V.; Canales, C.; Fazzi, R.
This paper presents a nonlinear optimization model that use to establish an annual quota for the total allowable catch for managing the yellow squat lobster fishery. The proposed bioeconomic model maximizes the economic profits of the activity involved and, simultaneously, takes into account the long-term conservation of the resource by restricting catches and thereby assuring adequate biomass level in the future. The dynamic behavior of the population is incorporated through a single-specie logistic growth model. Parameters (e.g., growth rate, maximun population and ish eort) were estimated based on a sampling technique using historical biomass reports and fishing yields. The results obtained with this methodology are shown, as is their application in...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Nonlinear equations; Quota regulations; Crustacean fisheries; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2006
URL: http://hdl.handle.net/1834/2068

Evaluación y manejo de praderas de feofitas en la Provincia de Arauco
Provedor de dados: 20
Autores: Ávila, M.; Cáceres, J.; Núñez, M.; Camus, P.; Romo, H.; Pérez, R.
El objetivo general del proyecto fue evaluar los stocks y proponer alternativas de explotación de las praderas de feofitas (Durvillaea antarctica y Macrocystis pyrifera) de la Provincia de Arauco, VIII Región. Este objetivo se logró a través de los siguientes objetivos específicos: identificar y caracterizar los algares de Durvillaea y Macrocystis de la Provincia de Arauco; determinar el estado poblacional de los algares identificados; analizar alternativas de explotación y acciones de manejo para los algares identificados en la zona de estudio de acuerdo a la realidad local; proponer regímenes de explotación y acciones de manejo, para los algares identificados en la zona de estudio de acuerdo a la realidad local.
Tipo: Report
Palavras-chave: Algae; Stock assessment; Exploitation; Resource management; Stock assessment; Algae; Resource management; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2005
URL: http://hdl.handle.net/1834/1810

Evaluación de recursos pelágicos pequeños al este de las Islas Galápagos durante abril de 1995
Provedor de dados: 20
Autores: Vicuña, H.; Chalén, X.
The document presents results from the pelagic acoustic research survey, executed at the East zone of the Galápagos Islands, between April and May 1995. A total of ca., 15 500 km² was covered. The following species were identified in the catch: mackarel (Scomber japonicus), south sardine (Sardinops sagax), mictophids (Lampanyctus spp.), and small specimens of giant squid (Dosidicus gigas). Mean legth and weight for mackarel and south sardine were 26,3 cm FL/0,251 kg and 18,6 cm TL/0,051 kg respectively. The estimated density for small pelagic fish of comercial interest (mackarel and sardine) was of 10,5 km². The estimated biomass for mackarel was ca., 125 000 t whereas for sardine was ca., 36 000 t. The current results coincide with those of March-April...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Length-weight relationships; Biomass; Stock assessment; Echo surveys; Biomass; Stock assessment; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 1995
URL: http://hdl.handle.net/1834/3022

Evaluación hidroacústica de jurel en la región oceánica, de la I y II Regiones
Provedor de dados: 20
Autores: Córdova, J.; Correa, V.; Hernández, C.; Letelier, J.; Reyes, H.; Ramirez, N.; Catasti, V.; Valenzuela, V.; Bocic, V.
El presente informe contiene los resultados de la cuantificación de la biomasa por hidroacústica del jurel en la zona norte, la distribución e indicadores biológicos del jurel, las condiciones ambientales y las relaciones entre éstas y la distribución del recurso. El crucero de investigación se realizó entre el 2 de noviembre y el 5 de diciembre del año 2006. La prospección abarcó el área desde Arica (18º 20’ S) a Antofagasta (23º 50’ S), desde las 5 a 200 mn. Este estudio se llevó a cabo con el B/C Abate Molina operado por el Instituto de Fomento Pesquero (IFOP) y de propiedad de Subsecretaría de Pesca.
Tipo: Report
Palavras-chave: Stock assessment; Biomass; Echo surveys; Environmental conditions; Geographical distribution; Stock assessment; Biomass; Geographical distribution; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007
URL: http://hdl.handle.net/1834/1851

Evaluación hidroacústica del stock parental de merluza de tres aletas en su unidad de pesquería, año 2004. FASE I y FASE II
Provedor de dados: 20
Autores: Lillo, S.; Céspedes, R.; Ojeda, V.; Saavedra, A.; Díaz, E.; Adasme, L.
El presente estudio tiene como objetivo evaluar el stock de merluza de tres aletas (Micromesistius australis) a través del método hidroacústico, entre las latitudes 47° 00' S y 51° 00' S. Como parte del proyecto, se realizó entre el 2 y el 14 de septiembre de 2004 un crucero de prospección a bordo del B/C Abate Molina, orientado a evaluar mediante un método de evaluación directa (evaluación acústica) su biomasa, abundancia y distribución, junto con estimar la composición de tallas, edad y proporción sexual del stock desovante en el área de estudio.
Tipo: Report
Palavras-chave: Stock assessment; Spawning populations; Echo surveys; Biomass; Geographical distribution; Sex ratio; Age groups; Body size; Stock assessment; Biomass; Geographical distribution; Body size; Sex ratio; Age groups; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_35330; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_28628.
Ano: 2005
URL: http://hdl.handle.net/1834/1740

Distribución, evaluación acustica y estructura poblacional de la anchoíta. Resultados de las campañas del año 1993
Provedor de dados: 20
Autores: Hansen, J.E.; Madirolas, A.
Two pelagic surveys to study were carried out during 1993. Those surveys covered the regions inhabited by either the bonaerensis stock in october (34-41°S)and the patagonian stock in November - December (41-45°30'S). Pre-stratified random sampling designs, including two random steps to allocate the transects, were adopted to perform the acoustic sampling by echo integration. A midwater trawl net (9-16 m vertical opening, 10 mm mesh-sized codend)was used to collect fish samples. The biomass of the northern stock was acoustically estimated to be about 1,45 million tons, whereas that of the southern stock was almost 740,000 t. Young anchovies, up to two-year old, allow for most of theose abundance values within each stock. The arrays of individuals at the sea...
Tipo: Journal Contribution
Palavras-chave: Pelagic fisheries; Geographical distribution; Biomass; Mortality; Echo surveys; Stock assessment; Geographical distribution; Biomass; Stock assessment; Pelagic fisheries; Mortality; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_4945.
Ano: 1996
URL: http://hdl.handle.net/1834/1955

Evaluación de polaca (Micromesistius australis) en el Atlántico Sudoccidental. Período 1987-2001
Provedor de dados: 20
Autores: Wöhler, O.C.; Hansen, J.E.; Cassia, M.C.; Cordo, H.D.
Period 1987-2001. A diagnosis of the current state of Southern blue whiting (Micromesistius australis) stock in the Southwest Atlantic was carried out on the basis of catches corresponding to the period 1987-2001 as reported by the Argentine fleet and also by vessels operating around Malvinas Islands. Abundance and current fishing mortality rates were estimated, and the biomass evolution in the long term resulting from some possible exploitation strategies based on different management strategies were projected. A sequential population analysis calibrated under a conceptual adjustable framework with five independent abundance indices was carried out. The effects on the biomass estimates were analysed by adopting different selection patterns and calibration...
Tipo: Journal Contribution
Palavras-chave: Fishery management; Biomass; Demersal fisheries; Stock assessment; Biomass; Fishery management; Demersal fisheries; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2007
URL: http://hdl.handle.net/1834/2526

Evaluación hidroacústica del recurso jurel entre la V y X Regiones, invierno, año 2004
Provedor de dados: 20
Autores: Córdova, J.; Barbieri, M.A.; Espejo, M.; Núñez, S.; Ortiz, J.; Torres, P.; Véjar, F.; Catasti, V.; Valenzuela, V.
El presente informe contiene los resultados de la cuantificación de biomasa por hidroacústica del jurel (Trachurus murphyi) en la zona centro-sur, la distribución e indicadores biológicos del jurel, las condiciones ambientales, y las relaciones entre éstas y la distribución del recurso. El crucero de investigación se realizó entre el 29 de mayo al 23 de junio del año 2003.
Tipo: Report
Palavras-chave: Stock assessment; Biomass; Echo surveys; Geographical distribution; Environmental conditions; Fishery resources; Pelagic fisheries; Stock assessment; Biomass; Geographical distribution; Environmental conditions; Fishery resources; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2005
URL: http://hdl.handle.net/1834/1734

Índice de abundancia del grupo merluza de edad 2 en el área de cría patagónica. Período 1995-1998
Provedor de dados: 20
Autores: Castrucci, R.; Aubone, A.; Pérez, M.; Renzi, M.A.
An abundance index of hake Merluccius hubbsi individuals age 2 was estimated in the nursery area south of 41°S Argentine Sea, SW Atlantic. The analysis comprised the 1995-1998 period and was made with data derived from research surveys programmed to that end. A mean value estimator of CPUE catch in number of individuals per trawl hour based on delta distribution was used. The spatial distribution of CPUE of age groups 1 and 2 in the area surveyed, total length distribution per survey and the corresponding age composition are presented. The declining trend of abundance index of hake age 2 observed during the four year period amounted to 52.9.
Tipo: Journal Contribution
Palavras-chave: Nursery grounds; Juveniles; Abundance; Stock assessment; Gadoid fisheries; Stock assessment; Nursery grounds; Juveniles; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_25438; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 2003
URL: http://hdl.handle.net/1834/2477

Aplicación de un modelo dinámico de biomasa para evaluar el efectivo sur de merluza. Período 1986-1998
Provedor de dados: 20
Autores: Irusta, G.; Hernandez, D.R.
The status of hake (Merluccius hubbsi) resource south of 41°S in the Argentine Sea was evaluated with the Biomass Dynamic Model of Pella and Tomlinson. Results indicate that the population was overexploited and in a low biological production level (B99 BMSY1 because, as of 1998, catches always exceeded the surplus production corresponding to each year and the (MSY) Maximum Sustainable Yield. In 1993 increase of landings accelerated declination of biomass. For 1999 the MSY was estimated at 244,773 t and the replacement catch at 147,389 t. Landings corresponding to 1998 surpassed the MSY in 145,000 t and the replacement catch in 242,611 t.
Tipo: Journal Contribution
Palavras-chave: Gadoid fisheries; Stock assessment; Overfishing; Biomass; Yield; Stock assessment; Biomass; Overfishing; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_34068.
Ano: 2003
URL: http://hdl.handle.net/1834/2425

Monitoreo y prospección de orange roughy, año 2001
Provedor de dados: 20
Autores: Young, Z.; Díaz, E.; Bahamonde, R.; Tascheri, R.; Muñoz, Y.; Olivares, A.; Ortego, M.I.; Rivera, J.; Oliva, J.
Se realizó una recopilación y análisis de datos de la pesquería de orange roughy (Hoplostethus atlanticus) que cubrió el período mayo-agosto de 2001, con el propósito de caracterizar la actividad pesquera y la condición biológica del recurso. Además, se realizó una pesca exploratoria, orientada a prospectar nuevas áreas de extracción para este recurso.
Tipo: Report
Palavras-chave: Marine fisheries; Deep-sea fisheries; Stock assessment; Fecundity; Reproduction; Echo surveys; Marine fisheries; Stock assessment; Fecundity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/1727

Introducción al análisis Bayesiano
Provedor de dados: 20
Autores: Hernandez, D.R.
An introduction to the Bayesian Analysis is presented and conceptual aspects highlighted. Initially, the probability concept is analyzed from its objective perspective such as frequency, and from its subjective perspective such as degree of belief. It is discussed how, within the context of Bayesian statistics, probability as degree of belief allows to give sense to the probability of a hypothesis and, therefore, enables to resolve problems of scientific interest that could not be otherwise addressed. The likelihood concept is discussed and the Bayes formula, which integrates a priori information and knowledge with information provided by current data demonstrated. Basic concepts of the Decision Theory within the Bayesian perspective are introduced. The...
Tipo: Book
Palavras-chave: Statistical analysis; Statistical models; Fishery resources; Stock assessment; Prediction; Probability theory; Statistical analysis; Stock assessment; Fishery resources; Prediction; Http://aims.fao.org/aos/agrovoc/c_7378; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2942; Http://aims.fao.org/aos/agrovoc/c_29367.
Ano: 2007
URL: http://hdl.handle.net/1834/2560

Estimación de la biomasa de adultos desovantes de la anchoíta (Engraulis anchoita)en el área costera bonaerense durante la primavera de 1981 y análisis comparativo de los recuentos de ictioplancton con redes de diferentes mallas
Provedor de dados: 20
Autores: Sánchez, R.P.; de Ciechomski, J.D.
A bongo sampler fifted with nets of two different mesh sizes, 330 and 505 u. was used to collected 137 ichthyoplankton samples in the coastal areas off Buenos Aires Province in October, 1981. The efficiency of the two meshes for catching anchovy eggs and larvae and total ichthyoplankton was examined. The statistical analysis of the samples shows that there are no significant differences between the numbers of anchovy and total eggs collected by the different meshes. As regards anchovy and total larvae the finer mesh showed as significantly higher catching efficiency. The results of this partial estimate do not suggest that a major revision of the total assessment of the complete stock is necessary.
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fish eggs; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 1984
URL: http://hdl.handle.net/1834/2044

Evaluación de merluza de cola (Macruronus magellanicus) en el Atlántico Sudoccidental. Período 1985-2001
Provedor de dados: 20
Autores: Wöhler, O.C.; Hansen, J.E.; Giussi, A.R.; Cordo, H.D.
Period 1985-2001. A stock assessment of Patagonian hoki of the Southwest Atlantic was carried out by using data from the years 1985-2001. A cohort analysis, fitted with some survey abundance indices was used in an adaptive conceptual framework. Simulation trials were performed to project the evolution of the fishery, to evaluate the risk of over-fish the stock under different exploitation levels, and to estimate Biologically Acceptable Catches (BAC). Both total biomass and spawning stock biomass showed increasing trends resulting from four strong year classes (1993, 1995, 1996 and 1998). Total biomass at the beginning of 2001 was estimated to be 2.5 million tons, and spawning stock biomass at the spawning time (August) was estimated to be around 1.28...
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Fishery management; Biomass; Risks; Demersal fisheries; Stock assessment; Fishery management; Biomass; Demersal fisheries; 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_2173.
Ano: 2007
URL: http://hdl.handle.net/1834/2525

Estimaciones in situ de la fuerza de blanco (TS) de merluza del sur y merluza de cola
Provedor de dados: 20
Autores: Lillo, S.; Barbieri, M.A.; Espejo, M.; Castillo, J.; Miranda, H.; Córdova, J.; Saavedra, A.; Rojas, M.; Cancino, C.; Flores, F.; Reyes, H.
En el presente informe se entregan los resultados finales del proyecto FIP 2003-34, cuyo objetivo general fue estimar mediante métodos in situ, la fuerza de blanco de las especies merluza del sur y merluza de cola (Merluccius australis y Macruronus magellanicus). En primer lugar durante el desarrollo del proyecto, se debió proponer un enfoque metodológico dirigido a efectuar las mediciones de fuerza de blanco considerando las características del recurso y los medios tecnológicos disponibles. En segundo término, se procedió a definir un sistema acústico a emplear para lo cual se analizaron diferentes alternativas, seleccionándose un sistema compuesto de un transductor de profundidad que era desplegado en las profundidades de distribución de los recursos...
Tipo: Report
Palavras-chave: Stock assessment; Acoustic equipment; Echo surveys; Target strength; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2005
URL: http://hdl.handle.net/1834/1812

Evaluación del stock desovante de anchoveta en la I y II Regiones, año 2003
Provedor de dados: 20
Autores: Braun, M.; Claramunt, G.; Reyes, H.; Catasti, V.; Montenegro, C.; Baros, V.; Díaz, E.; Pizarro, J.; Pizarro, P.
El informe contiene los resultados correspondientes al desarrollo del crucero Módulo huevos y Módulo adultos del Proyecto FIP 2003-07. De conformidad con la metodología planteada en la propuesta técnica y con el fin de estimar los parámetros biológicos que requiere la aplicación del Método de Producción de Huevos, a saber: fecundidad media poblacional, frecuencia de desove, proporción sexual, producción diaria de huevos y peso estimado de hembras maduras, se realizaron los respectivos muestreos para el recurso anchoveta, durante el período de máxima actividad reproductiva del año 2003.
Tipo: Report
Palavras-chave: Stock assessment; Reproduction; Eggs; Fecundity; Pelagic fisheries; Spawning; Eggs; Stock assessment; Spawning; Reproduction; Fecundity; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2004
URL: http://hdl.handle.net/1834/1732

Evaluación preliminar de los recursos pelágicos en el Área Común de Pesca Argentino-Uruguaya: año 1978-1979
Provedor de dados: 20
Autores: Nión, H.C.; Castaldo, H.A.; Barea, L.C.
En este trabajo se presenta una evaluación preliminar de los recursos pelágicos del frente oceánico del Río de la Plata y del área común de pesca argentino-uruguaya en el Atlántico Sudoccidental. Dicha evaluación fue llevada a cabo por el Gobierno de la República Oriental del Uruguay, durante la segunda fase del Preyecto Pesquero URU.71.517.
Tipo: Report
Palavras-chave: Pelagic fisheries; Geographical distribution; Size distribution; Zonal distribution; Sex ratio; Length-weight relationships; Stock assessment; Geographical distribution; Stock assessment; Pelagic fisheries; Sex ratio; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659; Http://aims.fao.org/aos/agrovoc/c_7014.
Ano: 1980
URL: http://hdl.handle.net/1834/2556

Recomendaciones preliminares para el manejo y explotación del efectivo pesquero de la merluza común (Merluccius hubbsi) del Golfo San Matías a partir de la aplicación del análisis de Rendimiento por Recluta
Provedor de dados: 20
Autores: González, R.A.; Morsan, E.M.
El presente plan analiza la población de merluza mediante un modelo de rendimiento por recluta y enuncia recomendaciones de manejo pesquero del sotck
Tipo: Report
Palavras-chave: Fishery resources; Fishery management; Stock assessment; Recruitment; Yield/recruit; Fishery management; Stock assessment; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 1998
URL: http://hdl.handle.net/1834/3686

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

Evaluación hidroacústica del reclutamiento de anchoveta y sardina común entre la V y X Regiones, año 2004
Provedor de dados: 20
Autores: Castillo, J.; Saavedra, A.; Gálvez, P.; Núñez, S.; Ortiz, J.; Torres, P.; Véjar, F.; Molina, E.; Cerna, F.; López, A.A.; Bustos, L.
Se presentan los resultados de la evaluación acústica de biomasa, abundancia y distribución espacial; oferta ambiental de alimentos y las condiciones oceanográficas físicas asociadas a la anchoveta y sardina común en el período de reclutamiento de enero del año 2005 en la zona centro-sur.
Tipo: Report
Palavras-chave: Stock assessment; Biomass; Abundance; Geographical distribution; Environmental conditions; Echo surveys; Stock assessment; Biomass; Geographical distribution; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2005
URL: http://hdl.handle.net/1834/1748

Conocimiento biológico pesquero del recurso merluza (Merluccius hubbsi) y su pesquería en la República Argentina.
Provedor de dados: 20
Autores: Bezzi, S.I.; Dato, C.V.
This paper summarizes the present knowledge on Merluccius hubbsi and its fishery in Argentina, based on the model proposed by the Technical Secretary of Comisión Técnica Mixta del Frente Marítimo, in 1990. It includes the taxonomic location of the species, its geographical distribution, stock unity, structure and population dynamics. It describes the fishing gear and fishing operations and presents the available information on selectivity and discards. The paper shows the data landings separated by fleet. Exploitation regulatory measures in force are included.
Tipo: Journal Contribution
Palavras-chave: Gadoid fisheries; Population dynamics; Stock assessment; Mortality; Population structure; Fishery management; Landing statistics; Parasites; Stock assessment; Population structure; Fishery management; Mortality; Parasites; Population dynamics; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_5574; Http://aims.fao.org/aos/agrovoc/c_6111.
Ano: 1995
URL: http://hdl.handle.net/1834/2558

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

Los recursos pesqueros demersales del Mar Argentino. Parte I. Evaluación de la biomasa (Standing stock)de la merluza común (Merluccius hubbsi)y de la merluza austral (Merluccius polylepis)en el área de su distribución estival
Provedor de dados: 20
Autores: Simonazzi, M.A.; Otero, H.O.
The present paper deals with the standing stock (Pw1)of the common hake (Merluccius hubbsi)and the austral hake (Merluccius polylepis), using the swept are method (Alverson, 1971)and with the Potential Yield (Cmax)using the Gulland (1970)method. The standing stock of the common hake was 2.642.715 tons. the highest concentrations of this specie were distributed over 12.348 nm² (13 o/o of the toal distribution area)with 1.178.843 tons. This area was located between 41° and 45° of south latitude and between the coast and 100 m of bottom depth in the Patagonian Shelf. The other 1.463.872 tons were distributed over a wide area of 82.727 nm².
Tipo: Journal Contribution
Palavras-chave: Stock assessment; Geographical distribution; Seasonal distribution; Hake fisheries; Stock assessment; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 1980
URL: http://hdl.handle.net/1834/2057

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

Abondance relative et estimation de la biomasse des petits pélagiques des eaux tunisiennes
Provedor de dados: 20
Autores: Ben Abdallah, L.; Hattour, A.; Guennegan, Y.
Deux  campagnes de prospection sur les petits pélagiques s'inscrivant dans le cadre du Programme National Mobilisateur (PNM), "Evaluation de ressources pélagiques et démersales des eaux tunisiennes" (1996-1999) ont été menée en étroite collaboration avec l’Institut Français de Recherche et d’Exploitation de la Mer (IFREMER). Ces campagnes ont pour objectifs de préciser l'abondance relative des petits pélagiques et leur variabilité spatiaux-temporelles mais également de quantifier les potentiels exploitables des stocks des animaux aquatiques préalablement définis, et surtout de familiariser l’équipe des scientifiques tunisiens, aux méthodes numériques et informatiques utilisées en participant à la lecture des échogrammes et aux traitements des données des...
Tipo: Journal Contribution
Palavras-chave: Abundance; Biomass; Pelagic fisheries; Potential yield; Stock assessment; Biomass; Stock assessment; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2004
URL: http://hdl.handle.net/1834/1163

Descripción de las principales especies de invertebrados sujetas a explotación pesquera artesanal en el Golfo San Matías y caracterización sinóptica del sistema pesquero rionegrino relacionado con esas pesquerías
Provedor de dados: 20
Autores: Narvarte, M.; Morsan, E.M.
Se presenta una sinopsis sobre la situación d las pesquerias artesanales de invertebrados del Golfo San Matías, de los principales recursos (almeja púrpura, vieira tehuelche, mejillón y pulpito) y del ecosistema marino donde se desarrollan las mismas. Se brinda una guía de análisis para proceder a la evaluación de las mismas con vistas a la potencial certificación de una gestión sustentable. Además se incluye una memoria descriptiva del sector institucional y los organismos encargados de la administración, manejo, investigación y control de las pesquerías, como asi también del marco legal en la que se desarrolla la actividad
Tipo: Report
Palavras-chave: Artisanal fishing; Coastal fisheries; Fishery management; Clam fisheries; Stock assessment; Legislation; Fishery regulations; Certification; Fishery management; Stock assessment; Coastal fisheries; Legislation; Certification; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_1696; Http://aims.fao.org/aos/agrovoc/c_4253; Http://aims.fao.org/aos/agrovoc/c_35702.
Ano: 2005
URL: http://hdl.handle.net/1834/3712

Talla de primera madurez del abadejo (Genypterus blacodes) en el Atlántico Sudoccidental.
Provedor de dados: 20
Autores: Cordo, H.D.; Machinandiarena, L.; Macchi, G.J.; Villarino, M.F.
The length at first maturity (Lm50. ) and the maturity ogive are very important parameters in stock assessment. In this paper the ling Genypterus blacodes females Lm50.  is estimated with frequencies of mature fish determined by microscope diagnosis of ovaries collected during the spawning season (SW Atlantic). The Lm50.  of ling was estimated at 70.5 cm of total length (TL), which corresponds to an age of 4.5 years. The maturity process occurs between 63 and 78 cm TL (between 3.7 and 5.4 years).
Tipo: Journal Contribution
Palavras-chave: Sexual maturity; Ovaries; Stock assessment; Ovaries; Stock assessment; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2002
URL: http://hdl.handle.net/1834/2544

Estado de explotación del recurso besugo (Epigonus crassicaudus) en Chile
Provedor de dados: 20
Autores: Wiff, R.; Quiroz, J.C.; Tascheri, R.
The exploitation status of cardinalfish (Epigonus crassicaudus) yielded in Chile between 33° to 41°S was analyzed. An indirect assessment was performed between 1997 and 2003 through size-structured model with a transition matrix defining the changes among sizes. The model was calibrated using size structures, official landings, catch-per-unit of effort (CPUE) taken from commercial fishing logbooks and standardized by generalized linear models (GLM). After 7 years of an intense fishery activity, we concluded that the cardinalfish resource in Chile is on the recruitment overfishing limit. On 2003, the spawning biomass with respect to the virginal spawning biomass is close to 40%. The biological references points (BRP) based on spawning per recruit biomass...
Tipo: Journal Contribution
Palavras-chave: Exploitation; Fisheries; Stock assessment; Fisheries; Stock assessment; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_24251.
Ano: 2005
URL: http://hdl.handle.net/1834/2069