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| Registros recuperados: 28 | |
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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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| 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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| Campbell, R.A.; Tuck, G.N.. |
| Due to the general lack of targeted fisheries on billfish, the resource status of these species within the Indian Ocean has not been analysed in any previous study and currently remains unknown. Nevertheless, significant quantities of billfish are caught annually in the Indian Ocean and, being generally long lived, these species remain vulnerable to overfishing. In this paper preliminary indices of stock availability are presented for the main billfish species based on the catch and effort data pertaining to the Japanese and Taiwanese Indian Ocean longline fisheries. While the indices need to be treated with some caution (due to problems relating to the accuracy of the catch and effort data, and the fact that changes in catchability have not been factored... |
| Tipo: Proceedings Paper |
Palavras-chave: Catch/effort; Stock assessment; Overfishing; Catchability; Fishing gear. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/58 |
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| Nunes,José de Anchieta Cintra da Costa; Medeiros,Diego Valverde; Reis-Filho,José Amorim; Sampaio,Cláudio Luis Santos; Barros,Francisco. |
| Although recreational spearfishing is a growing activity, its impacts are poorly understood. This paper aims to present data on reef fishes captured by recreational spearfishing in the Bahia State, Northeastern Brazil. We analyzed 168 photos of spearfishing conducted in the reefs of this region between 2006 and 2008. A total of 1.121 fish belonging to 48 species were captured in three sub-regions of the Bahia coastline: Litoral Norte (LN), Salvador (SSA) and Baixo Sul (BS). The main species caught were: Scomberomorus brasiliensis (n = 191), Sphyraena barracuda (n = 153), Lutjanus jocu (n = 150) and Caranx bartholomaei (n = 141); these four species represented 56.5% of total captures. Over the sampling period, the highest values of catch rates per day were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Overfishing; Coral reefs; Salvador; Litoral Norte; Baixo Sul. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000100014 |
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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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| Registros recuperados: 28 | |
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