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| Registros recuperados: 50 | |
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| Villarino, M.F.; Aubone, A.. |
| The total length distribution of pink cuskeel Genypterus blacodes catches is difficult to obtain. On the contrary, it is easy to have access to the head length distribution. So, the purpose of this study was to obtain a relationship between a certain head measurement and total length to estimate the length distribution of the catches. Individuals were obtained from bottom-trawl surveys between 39°-47°S and the San Jorge Gulf of the Argentine sea. Sets of measurements of total length (LT), maxillar length (Lmax), head length (Lc),orbital length (Lo), preorbital length (Lpo) and head length-total length ratio (r=Lc/LT) by sex were obtained. The total length was estimated with a regression model using the head length as independent variable. No significant... |
| Tipo: Journal Contribution |
Palavras-chave: Size distribution; Regression analysis; Fishery surveys; Regression analysis; Http://aims.fao.org/aos/agrovoc/c_16335. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/2532 |
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| Ould Mohamed Fall, K.. |
| Résumé : L’indice d’abondance des principales espèces de sparidés pêchées en Mauritanie a été suivi dans les campagnes de chalutage démersal du CNROP en saison froide, chaude et transition, durant la période allant de 1982 à 1992. Des affinités par zone (cas de Diplodus bellottii, Pagellus bellottii, et Sparus caeruleostictus) et par saison (Dentex macrophtalmus) ont été observées. Un indice moyen mensuel a été dégagé pour les 6 espèces étudiées et les aires de distribution ainsi que les zones d’abondance déterminées. |
| Tipo: Journal Contribution |
Palavras-chave: Spatial distribution; Abundance; Trawlers; Fishery surveys. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/255 |
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| Lasta, C.A.. |
| The Coastal Project developed at the INIDEP (Mar del Plata,Argentina) offers an analysis on the operative modality of coastal assessment surveys, proposing an information process useful to standardize data collection and processes of future surveys. The efficiency of the evaluation of strata used until the year 1993 was analyzed and a new stratification is proposed. The aim was to define area-strata of importance for the main coastal species, using the traditional stratification of the coastal ecosystem and the mew methodology. The reason for redefining strata is that a decrease was been detected in the number of traditional species and an increment on the biomass of non-commercial species and,associated with it, the development of new explotation areas.... |
| Tipo: Journal Contribution |
Palavras-chave: Fishery surveys; Coastal fisheries; Coastal fisheries; Http://aims.fao.org/aos/agrovoc/c_1696. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2466 |
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| Bautil, B.R.R.. |
| Spiny lobster fishing in the Seychelles is an artisanal done essentially by skin divers operating at night in the shallow waters surrounding by the islands. Because of human population distribution lobster fishing grounds are concentrated on the inner granitic islands. In September 1992, a random stratified samoling program was set up to gather biological information from the entire granitic Mahe plateau. Direct census of fishery resources by Scuba divers swimming underwater transects was selected as the most feasible and expedient means by which to enact the Resource Survey. This report present partial result gathered for the survey around Mahe Island only and provides an estimate of the Maximum sustainable yield for the granitic plateau by extrapolation... |
| Tipo: Report |
Palavras-chave: Fishery surveys; Fishery biology; Population characteristics; Panulirus. |
| Ano: 1992 |
URL: http://hdl.handle.net/1834/5118 |
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| Brunetti, N.E.; Ivanovic, M.L.; Rossi, G.R.; Elena, B.; Benavides, H.R.; Guerrero, R.A.; Blanco, G.; Marchetti, C.; Piñero, R.. |
| The distribution, abundance and population structure of Illex argentinus in relation to the oceanographic conditions during summer 1997, were analyzed as a result of the research cruise carried out by R/V Shinko Maru No.3 on the Argentine shelf (39-50°30'S). Besides, abundance and biological features of Ommastrephes bartrami are analyzed. The main activities carried out during the cruise included jigging operations, tagging (only for I. argentinus) and biological sampling. In addition, meteorological and oceanographic data were collected. A total of 30,2000 individuals were tagged and released. The recapture rate was 0.156. (47 recoveries/30,200 released), considerably higher than that of 1996 (0.030; 4 recoveries/13,191 released). I. argentinus was... |
| Tipo: Journal Contribution |
Palavras-chave: Fishery surveys; Abundance; Population structure; Tagging; Cruise reports; Population structure; Tagging; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14775. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/2537 |
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| Barahona, N.; Young, Z.; Gálvez, P.; Orensanz, J.M.; Cornejo, S.; Mejías, P.; Miranda, H.; Jerez, G.; Carrasco, J.. |
| El propósito de este proyecto fue diseñar e implementar un sistema de monitoreo biológico-pesquero, geográficamente orientado al levantamiento de información de las actividades extractivas del recurso erizo en la XII Región. Para alcanzar el objetivo general del proyecto, se planteó iniciar un proceso de toma de datos complementario al ejecutado por el proyecto Investigación Situación Pesquerías Bentónicas, en el marco de una Pesca de Investigación. En la propuesta técnica, el período comprometido con actividades en terreno, fue de tres meses; se hicieron algunos ajustes a la programación y se traspasaron algunas actividades a la fase II de este estudio. De esta manera se continuó con la toma de datos durante todo el período de extracción, marzo a agosto... |
| Tipo: Report |
Palavras-chave: Fishery surveys; Monitoring; Catch/effort; Resource management; Benthos; Biological data; Benthos; Monitoring; Resource management; Http://aims.fao.org/aos/agrovoc/c_878; Http://aims.fao.org/aos/agrovoc/c_4911; Http://aims.fao.org/aos/agrovoc/c_6524. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1809 |
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| 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 |
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| Moriondo Danovaro, P.. |
| The study on distribution and abundance of eggs and early planktonic stages of red shrimp, Pleoticus muelleri (Bate, 1888), contributes to a better knowledge of the species dynamics. Results from processing and analyzing 72 plankton samples collected with Bongo net during two research cruises on board of FV “Arbumasa XVIII” and RV “Capitán Oca Balda”, carried out in the Patagonian littoral in March 2008 and January 2009, are presented. In both cruises, eggs and larval stages were found all over the study area. The highest punctual densities of eggs were recorded in the area known as “La Pared” (46° 45’ S-65° 55’ W and 46° 50’ S-65° 55’ W). Eggs indicate the presence of shrimp reproductive concentrations which, while migrating eastwards towards waters of... |
| Tipo: Journal Contribution |
Palavras-chave: Fish larvae; Eggs; Abundance; Fishery surveys; Pleoticus muelleri; Marine environment. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4880 |
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| Moreno, J.; Ruíz, W.. |
| Durante el período abril 2009 – 2010 se analizó la situación pesquera artesanal del recurso guariche o cangrejo rojo Ucides occidentalis (Ortmann, 1897) en el estuario del Río Chone, considerando desembarques comerciales y su hábitat “in situ”. El esfuerzo total promedio correspondió 84 recolectores/día pesca, con una captura promedio de 36 cangrejos o su equivalente a 6 sartas u atados. Se registró un 90% de ejemplares macho con talla promedio de 7.5 cm de ancho cefalotorácico (AC); mientras que el 10% de ejemplares hembras presento una talla promedio de 6.5 cm AC. El muestreo de densidad poblacional se lo realizo en 36 estaciones correspondiente a las seis localidades cangrejeras ubicadas en el estuario reportando una densidad de 0.7 cangrejos/m2.... |
| Tipo: Journal Contribution |
Palavras-chave: Crab fisheries; Landing statistics; Catch/effort; Size-limit regulations; Size composition; Fishery surveys. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4794 |
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| Registros recuperados: 50 | |
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