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| Registros recuperados: 23 | |
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| Nageon de Lestang, J.. |
| Shark species, both oceanic and coastal, are very common to Seychelle waters. In the past, however, the demand for shark and shark products has always been very erratic. The ever-increasing international concern for the species and potential conflicts between fishermen and conservation groups has highlighted the issue. In the Seychelles, the shark are caught by gillnets in inshore waters and by hook-and-line and purse seine offshore. Until very recently there were no regulations controlling the shark fishery, but, partly in response to initiatives by a local conservation group, fishing for sharks with nets has been banned since 1 August 1998. A review is provided of the present situation of the fishery whilst underscoring the difficulties of formulating a... |
| Tipo: Report |
Palavras-chave: Seychelles; SHARK FISHERIES; Fishery management; Fishery regulations; Legislation; Shark fisheries; Fishery management; Legislation; Sharks. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/1311 |
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| Garcia de la Rosa, S.B.. |
| As a general rule, sharks and rays play an important role in the energy exchanges among higher trophic levels of the marine food chain and some of them, with an important impact as piscivorous predators. Squalus acanthias (Squalidae) and Raja flavirostris (=Dipturus chilensis )(Rajidae), are two elasmobranchs with high apparition frequencies in the SW Atlantic, in the coastal and demersal fishing trawls, co-existing and predating on the principal stocks of bony fish there located, especially the Argentine hake (Merluccius hubbsi). Both species could be transformed into alternative fishing resources, even though they are not currently commercially developed as such. The knowledge on their biology, given in great detail, will provide information for a... |
| Tipo: Theses and Dissertations |
Palavras-chave: Geographical distribution; Abundance; Size distribution; Feeding behaviour; Diets; Interspecific relationships; Predation; Food preferences; Shark fisheries; Geographical distribution; Feeding behaviour; Predation; Food preferences; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6162; Http://aims.fao.org/aos/agrovoc/c_3024. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/1487 |
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| de la Serna, J.M.; Valeiras, J.. |
| (Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5. |
| Tipo: Report |
Palavras-chave: Swordfish fishery; Blue shark; By-catch; Mediterranean; Prionace glauca; Shark fisheries; Sharks. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/790 |
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| Hernández-Hamón, H.; Núñez-R., S.. |
| A new record from the Southern Colombian Caribbean of the gulper shark Centrophorus granulosus (Schneider) (Pisces: Centrophoridae). There aren't records of Centrophoridae for the Southern Caribbean. Some of its species are generally known from bathypelagic habitats and are occasionally collected by deep exploratory field studies For the Colombian Caribbean, this is the First record of a male specimen (850 mm TL) of Centrophorus granulosus (Schneider, 1801) incidentally captured using a longline at 200 m depth on the continentalshelf off Bahía Taganga, Santa Marta. |
| Tipo: Journal Contribution |
Palavras-chave: Shark fisheries. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3318 |
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| Baisre, J. A.. |
| La pesca intensiva de los tiburones y en especial de sus aletas (se confecciona un plato para ocasiones y personas especiales) ponen en peligro su existencia. En la zona protegida las Doce Leguas y Nuevitas (Cuba), los turistas pueden alimentarlos, así como también, en otros 200 sitios más de buceo en el mundo. En este artículo se aborda el miedo a los tiburones, la película “Tiburón”, por qué comienza la caza de los tiburones, etc. |
| Tipo: Journal Contribution |
Palavras-chave: Shark fisheries. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5047 |
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| López-Garro, A.; Zanella-Cesarotto, Il.; Arauz-Vargas, R.. |
| Sharks present strong intraspecific changes in feeding habits, which may vary according to size, geographic location and season. This study analyzed the stomach contents of 52 juvenile scalloped hammerhead sharks (25 females and 27 males) caught by artisanal vessels in the Gulf of Nicoya. Regarding the organisms found in the stomachs, 41.07 % were teleost fish, 30.36 % mollusks and 28.57 % crustaceans. Mollusks presented the highest Relative Importance Index (RII) (43.05 %), followed by teleost fish (41.37 %) and crustaceans (15.58 %). Squids (Loliginidae) were the items with the greatest RII (32.57 %). By means of the Pianka index, a relatively low overlap between sexes was identified, suggesting a spatial sexual segregation and, in consequence, an... |
| Tipo: Journal Contribution |
Palavras-chave: Stomach content; Shark fisheries. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/4027 |
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| Bostock, T.; Herdson, D.. |
| Los tiburones son muy abundantes en las aguas ecuatorianas. Son capturados tanto por embarcaciones artesanales como por barcos industriales junto con peces pelágicos grandes (dorado, picudo, atún) y como pesca acompañante en los arrastreros. No existe una pesquería dedicada específicamente a la captura del tiburón. Sin embargo, se capturan grandes cantidades como parte de la pesca acompañante de varias otras pesquerías. Los tiburones más comunes en las capturas son los de la familia Carcharhinidae, los carcharhinidos. Se tiene que considerar que no todos los tiburones capturados se comercializan. A más de la captura de la flota artesanal, una porción muy apreciable del total es realizada por barcos industriales, los atuneros y los palangreros, éstos... |
| Tipo: Journal Contribution |
Palavras-chave: Shark fisheries; Shark utilization. |
| Ano: 1985 |
URL: http://hdl.handle.net/1834/3163 |
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| de la Serna, J.M.; Valeiras, J.. |
| (Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5. |
| Tipo: Report |
Palavras-chave: Swordfish fishery; Mediterranean; Blue shark; By-catch; Prionace glauca; Shark fisheries. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/790 |
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| Martínez Dallos, Iván; Neira Álvarez, Mayerly; Acero P., Arturo. |
| Se analizaron algunos aspectos biológicos de los tiburones boca zapato Rhizoprionodon lalandii y R. porosus, tales como madurez y segregación sexual, índices biológicos (gonadosomático, hepatosomático y factor de condición) y contenidos estomacales. Entre los meses de septiembre y diciembre de 2007 se realizó un seguimiento de las capturas de estos tiburones a partir de los desembarcos de la pesca artesanal realizada en Isla Fuerte. Se registraron 49 individuos de R. porosus, de los cuales 55 % se clasificó como inmaduros o juveniles, y 39 de R. lalandii, de los cuales 59 % se consideró como individuos inmaduros; se observó una proporción de sexos (machos:hembras) de 9:1 en R. porosus y 1:9 en R. lalandii, dando indicios de una segregación sexual.... |
| Tipo: Journal Contribution |
Palavras-chave: Marine fish; Population characteristics; Artisanal fishing; Shark fisheries. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4439 |
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| Registros recuperados: 23 | |
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