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Registros recuperados: 9
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Imprime registro no formato completo
Atelier de formation sur le code de la pêche à kayar OceanDocs
Dioh, B.; Ndiaye, O.; Sané, K.; Diouf, P.S..
Dans le programme de conservation des écosystèmes marins et côtiers de I'Akique de I'Ouest du World Wide Fund for Nature (WWF), Kayar a été retenu comme site où des activités de terrain doivent être menées. Dans le but de former et de sensibiliser les acteurs chargés de I'application des lois et règlements relatifs à la pêche et ceux à qui cette réglementation s'applique, une séance de vulgarisation des lois et règlements régissant la pêche au Sénégal a été organisée le 26 juillet 2002 à Kayar. Aprés la cérémonie d'ouverture, Messieurs Ousmane NDIAYE, Chef de la division pêche artisanale à la Direction de l'océanographie et des pêches maritimes (DOPM) et Alassane Samba DIOP, Chef du secteur des pêches de Kayar, animateurs de la journée, ont fait une...
Tipo: Report Palavras-chave: Mackerel fisheries; Marine accidents; Fish; Legislation; Law of the sea; Sea surface; Fish; Legislation; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_4253.
Ano: 2002 URL: http://hdl.handle.net/1834/1741
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Beneficio económico de la caballa (Scomber japonicus) con relación a la temperatura superficial del mar en el área de Mar del Plata. OceanDocs
Perrotta, R.G.; Hernandez, D.R..
The temperature that limits the presence of schools of Argentine chub mackerel Scomber japonicus was found to be around 19°C in the Mar del Plata area Buenos Aires prov., Argentina. At higher values, most shoals leave coastal waters in direction to the mid-shelf. An inverse relationship was observed between catches per unit of effort CPUE and sea surface temperature. The highest CPUE values corresponded to temperatures lower than 19°C. Beyond that value, the possibility of obtaining a CPUE higher than the unit is nearly null and the low standard deviation means it is unlikely to reach high CPUE values. The economic profit per minute of each daily cruise was estimated using a case study carried out with a single vessel pilot with mean structural and...
Tipo: Journal Contribution Palavras-chave: Catch/effort; Surface temperature; Fishery management; Commercial fishing; Mackerel fisheries; Fishery management; Http://aims.fao.org/aos/agrovoc/c_24026.
Ano: 2002 URL: http://hdl.handle.net/1834/2543
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Conseil interminstériel sur la pêche et l'aquaculture OceanDocs
La pêche est une composante essentielle du développement économique et social intégré. Elle contribue de manière non négligeable aux objectifs de croissance de l'économie nationale, notamment à la réduction du déficit de la balance des paiements, du chômage ainsi qu'a la satisfaction des besoins alimentaires des populations.
Tipo: Proceedings Paper Palavras-chave: Water analysis; Factory ships; Wastewater treatment; Mackerel fisheries; Lake fisheries; Fishery policy; Fishery management; Fishery protection; Fishery resources; Aquaculture; Lake fisheries; Fishery management; Aquaculture; Water analysis; Factory ships; Wastewater treatment; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_4159; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_550; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_10732; Http://aims.fao.org/aos/agrovoc/c_25312; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2002 URL: http://hdl.handle.net/1834/1482
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Consideraciones sobre el crecimiento de la caballa (Scomber japonicus marplatensis)durante su primer año de vida OceanDocs
Sánchez, R.P..
Through the analysis of the morphological changes ocurring in the process of growth, it was possible to identify three stages (primary juvenile: 25-75 mm; secondary juvenile: 76-160 mm; and juvenile preadult: 161-250 mm)during the first year of the species life. Regression equations for the different relations studied: body weight/body lenght, body surface/body lenght, body surface/body weight, and metabolic rate/body lenght, have been calculated for each stage. The variation of the number of gill rakers, mean distance between adjacent rakers and mean values of gill rakers lenght in reference to body growth was studied, and the relation between filtering area and body length was established.
Tipo: Journal Contribution Palavras-chave: Length-weight relationships; Condition factor; Gills; Juveniles; Mackerel fisheries; Gills; Http://aims.fao.org/aos/agrovoc/c_3262.
Ano: 1982 URL: http://hdl.handle.net/1834/2047
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Ecología trófica de la caballa del Mar Argentino (Scombridae, Scomber japonicus marplatensis). Parte I. Alimentación y crecimiento OceanDocs
Angelescu, V.A..
The present study describes the morphology of the digestive system, the feeding and feeding behaviour, and the trophic relationships of the mackerel in the coastal waters regions, pelagic zone, along the Province of Buenol Aires. At the same time, this study is completed with a bioestatistical analysis on growth rhythm of body length and body weight of secondary juveniles, pre-adults and adults. All the biological information and statistical data correspond, only to the period november-march and the summer trophic habitat area.
Tipo: Journal Contribution Palavras-chave: Trophic relationships; Ecological distribution; Digestive system; Feeding; Growth curves; Condition factor; Mackerel fisheries; Feeding; Digestive system; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_2275.
Ano: 1979 URL: http://hdl.handle.net/1834/2058
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Informe sobre el muestreo de desembarque de anchoíta (Engraulis anchoita) y caballa (Scomber japonicus) en el puerto de Mar del Plata: período septiembre 1999-enero 2000, con algunos comentarios sobre el manejo de estos recursos. OceanDocs
Garciarena, A.D.; Perrotta, R.G.; López, F..
The chub mackerel Scomber japonicus and anchovy Engraulis anchoita commercial landings at the Mar del Plata (Buenos Aires prov., Argentina) seaport during the September 1999-January 2000 period are studied. A total of 14 chub mackerel samples were taken for total length measurements exclusively and 5 anchovy sub-samples and 1 chub mackerel sub-sample were analyzed to record individual data total length, weight, sex, sexual stage, age from otoliths readings . Most of the fish caught for both species were adults and only a small fraction of chub mackerel juveniles was found in December 1999. Length-at-fifty-percent-maturity was calculated, length-weight and length-age relationships were fitted and length growth parameters estimated. Sea surface temperature...
Tipo: Journal Contribution Palavras-chave: Commercial fishing; Population structure; Catch/effort; Size distribution; Mackerel fisheries; Population structure; Http://aims.fao.org/aos/agrovoc/c_6115.
Ano: 2002 URL: http://hdl.handle.net/1834/2545
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La caballa (Scomber japonicus) y las condiciones del ambiente en elárea "El Rincón" 39°40'-41°30'S del Mar Argentino. Septiembre 2000 OceanDocs
Perrotta, R.G.; Viñas, M.D.; Madirolas, A.; Reta, R.; Akselman, R.; Castro Machado, F.; Garciarena, A.D.; Macchi, G.J.; Moriondo Danovaro, P.; Llanos, V.; Urteaga, J.R..
Between September 1st and 6th a research cruise was carried out in the Buenos Aires shelf area of "El Rincon" 39°40'-41°30'S, Argentine Sea SW Atlantic. The total area studied was 2,527.8 nautical mile2. Knowledge of the commercial fleet location at the time of the survey allowed to intensify sampling in a 'miniarea' of 52,8 nautical mile2. The acoustic assessment of chub mackerel (Scomber japonicus) biomass was 49,511.9 t, 94 of which corresponded to this last area. Fish samples coming from fishing trawls included only adult individuals of 240-460 mm total length (TL) and ages ranging 2-11 years. The limit age was estimated at 13 years and natural and total mortality rates at 0.23 and 0.54, respectively. Oceanographic conditions were those typical of the...
Tipo: Journal Contribution Palavras-chave: Population characteristics; Echo surveys; Mackerel fisheries; Fishery oceanography; Biomass; Environmental conditions; Fishery oceanography; Biomass; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_2938; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2003 URL: http://hdl.handle.net/1834/2418
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Reproducción y fecundidad del surel (Trachurus picturatus australis) OceanDocs
Cassia, M.C.; de Ciechomski, J.D..
Studies on the sexual maturation on the jack mackerel in the area close to Mar del Plata were carried out throughout the whole year, 56 almost ripe females between 160 and 210 mm in total length and between 38 and 78 g is weight were taken into consideration for fecundity determinations. The most importante results obtained during these studies are the following: The gonad index was rather high and reached the value of 11.5.-The reproduction season is a rather one and the spawning occurs mainly in December and January.-It is assumed that a female of this species spawns once over a reproduction season, but shedding numerous batches of eggs in short intervals.-The lowest value found for the fecundity was 15.825 ovocites and the highest one was 82.892.-It is...
Tipo: Journal Contribution Palavras-chave: Reproduction; Fecundity; Mackerel fisheries; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 1980 URL: http://hdl.handle.net/1834/2064
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Una aplicación de los estudios ambientales para orientar la pesqueria de la caballa Scomber japonicus en Mar del Plata OceanDocs
Perrotta, R.G.; Pertierra, J.P.; Viñas, M.D.; Macchi, G.J.; Tringali, L.S..
Both mackerel mean biomass and mean fishing effort in Buenos Aires (Argentina) shelf during the period 1990-91/1994-95 were estimated. Those values were 85,792 t and 42,051 minutes, respectively. However, the best economic profit from the fishery (about $15,390,036)($1=U$S1) was estimated to take place at 28,000 minutes. It was observed a waste in fishing effort of the commercial fleet related with sea surface temperatures of 19°C or more. Moreover, adult mackerel find better trophic conditions on the continental shelf (depth 50m), while larvae originated from massive spawning in late November-early December, i.e., during the main fishing season, find their optimum at lower depths. Mackerel shoals enter and leave fishing grounds in a counterclockwise way...
Tipo: Journal Contribution Palavras-chave: Mackerel fisheries; Biomass; Catch/effort; Environmental conditions; Economic models; Commercial fishing; Biomass; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1998 URL: http://hdl.handle.net/1834/2465
Registros recuperados: 9
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