Consulta: creatorFacets:"Irusta, G."
Registros recuperados: 5
Data/hora: 08/06/2024 10:44:10

Los desembarques argentinos de merluza (Merluccius hubbsi) entre 1987 y 1997
Provedor de dados: 20
Autores: Irusta, G.; Bezzi, S.I.; Simonazzi, M.A.; Castrucci, R.
The evolution of argentine landings, characteristics of trawl fleets, principal ports, landings per fleet and management unit (north and south of 41°S), areas and fishing seasons are described. Main results show a continuous increase of argentine hake landings as of 1987. Freezers, that operated in the Patagonian zone along the whole year, was the fleet that most contributed to said increase while the ice chilling fleet maintained its level of landings in the period considered. During the second and third quarter of 1996 and 1997, in the north management unit, the fleet fished in the argentine sector of the  Common Fishing Zone and north of 41°S. During 1996, in the south management unit, the main fishing zones for both fleets were northeast of Escondida...
Tipo: Journal Contribution
Palavras-chave: Landing statistics; Fishing effort; Fishing vessels; Trawlers; Gadoid fisheries; Trawlers; Fishing effort; Fishing vessels; Http://aims.fao.org/aos/agrovoc/c_7880; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2954.
Ano: 2001
URL: http://hdl.handle.net/1834/2592

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

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

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

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