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| Registros recuperados: 28 | |
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| Fonteneau, Alain; Fromentin, Jean-marc. |
| This communication presents a global overview of Atlantic bluefin tuna biology, exploitation and management. The comparison between bluefin tuna and all other tuna species do show that this species is ranking number one among other tunas world wide in a wide range of its resources and fisheries characteristics. Bluefin tuna is for instance the gold winner in the category of fisheries (about 10,000 years of documented fisheries, the highest price in the market, the largest tuna taken), of its peculiar biology (large migration, homing, growth, etc.) and in the category of risks presently faced by the resource, because of its multiple scientific uncertainties still pending, its increasingly serious statistical problems and the heavy political context in the... |
| Tipo: Text |
Palavras-chave: Pêche; Durabilité; Pêche abusive; Migration; Caractéristique du cycle vital; Fisheries; Sustainability; Overfishing; Migration; Life history trait.. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00194/30568/28995.pdf |
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| Pérez,Alfredo; Fabré,Nidia Noemí. |
| ABSTRACT The tiger shovelnose catfish (Pseudoplatystoma metaense) identified in literature prior to 2007 as P. tigrinum is the most important catfish species in the Orinoco River fishery, because of its abundance and high market price. The aim of this study was to obtain age, growth and population parameters of the of tiger shovelnose catfish. A total of 2,183 catfish, were sampled during 1996-2003 from the commercial fishery of the northwestern Orinoco River Basin in Venezuela, and were aged by examination of otoliths. Validation of otolith annuli was achieved with marginal increment analysis. Results suggest that, the opaque and translucent zones of otoliths were formed once per year. Length-weight relation and the von Bertalanffy growth model parameters... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Age; Growth; Otoliths; Overfishing; Venezuela. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100209 |
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| Baigún,Claudio; Minotti,Priscilla; Oldani,Norberto. |
| This study assesses the change in fish exploitation patterns of the sábalo fisheries of the lower Paraná River basin based on hydrological, biological, and fishery indicators. From historical catch records, we recorded a shift from a lightly and moderate exploited status before 2001 to a heavily exploited one, as a result of the development of sábalo exports from 2001 onwards. Channel and floodplain connectivity indices demonstrated that the Paraná exhibited highly favorable hydrological conditions between 1972 and 1999 but more adverse conditions from 1999 to 2009, as a consequence of flood pulses reduction coincident with a fishing mortality increment. A total catch of 15,000 tons, including local consumption, regional market, informal sales, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artisanal fisheries; Flood pulse; Neotropical rivers; Overfishing. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100199 |
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| Litovsky, A.. |
| El tema de las pesquerías forma parte de la temática del medio ambiente, pero más específicamente de la del desarrollo sustentable. Esta se refiere al impacto que produce la actividad humana sobre el medio ambiente, en este caso la explotación de un recurso renovable, y a las consecuencias que ello tiene, entre otras cosas, para el desarrollo de esa actividad sostenida en el tiempo. Esta temática es compleja ya que involucra diferentes aspectos de la organización social, que se relacionan entre sí e interactúan con la naturaleza. Por ejemplo, el incremento de la capacidad pesquera mundial no puede ser entendido independientemente de la dimensión política que permite o incentiva ese desarrollo. A pesar de que el problema se ha agudizado en la última década,... |
| Tipo: Theses and Dissertations |
Palavras-chave: Gadoid fisheries; Overfishing; Fishery policy; Fishery legislation; Socioeconomic aspects; Depleted stocks. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/4206 |
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| Pirate fishing by vessels flying Flags of Convenience (FOC) has become an issue internationally. They target primarily the high value species, such as shrimp, tuna, squid and others, and will fish anywhere in the world in order to catch them - on the high seas where there are no controls, in coastal waters of States which do not have the means of defending their waters against them. In several fisheries, such pirates are having a serious impact on the stocks, in some cases, it is estimated, making larger catches than the legitimate catches by vessels which participate in proper management regimes. |
| Tipo: Report |
Palavras-chave: Greenpeace; Overfishing. |
| Ano: 2001 |
URL: http://hdl.handle.net/1834/649 |
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| Zeba, S.. |
| These last years, while adressing marine conservation problems in Western Africa, 3 major issues were generally raised by our local partners: -Most of the distant water fleets fishing in the coastal waters of other countries do not often abide by the international standards of responsible fishing; -The number of distant water fleets is steadily increasing in the Exclusive Economic Areas of developing countries; -Theses fleets have tremendous ecological and economic consequences, which resulted in a crisis of fishery management. Yet it is thanks to fishing agreements that distant water fleets have legal access to the fish resources of developing coastal countries.More important: it is thanks to subsidies that the behaviours of distant water fleets have such... |
| Tipo: Report |
Palavras-chave: Distant water fisheries; Overfishing; Marine environment. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/650 |
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| Cordo, H.D.. |
| Catch per unit of effort (CPUE)analysis of the Argentine surimi fleet is a routine work to estimate abundance indices of southern blue whiting Micromesistius australis. Several analysis of this fishery suggest that, as of the years when intensive fishing by foreign and national fleets started, the resource has suffered a marked decline. When calculating the CPUE it is common practice to take into acount only trips and fishing operations with high catches of the target species fishing operations directed to other species are not considered to avoid underestimations. Therefore, in order to include a percentage of catch of the analyzed species higher than a subjective value, available data are filtered. However, because only operations with high yield are... |
| Tipo: Journal Contribution |
Palavras-chave: Catch/effort; Yield; Commercial fishing; Overfishing; Stock assessment; Stock assessment; Overfishing. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/1584 |
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| 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 |
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| Registros recuperados: 28 | |
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