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Registros recuperados: 29
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Composição e distribuição de comunidades de peixes na planície de inundação do rio Taquari, Pantanal, MS. Infoteca-e
FREY-DARGAS, J. H.; AOKI, C.; ROSA, F. R. da; RESENDE, E. K. de.
Este estudo teve o objetivo de caracterizar a ictiofauna da planície de inundação bacia do baixo Rio Taquari (Pantanal, MS) quanto à estrutura e diversidade de suas comunidades. Foram realizadas capturas em estações hídricas contrastantes em cinco estações de coleta de dados. Para as coletas de dados foram utilizadas redes de arrasto e tarrafas, os indivíduos capturados foram identificados in locii, fotografados e soltos vivos no local de captura. No total foram registrados 5137 indivíduos distribuídos em 54 espécies pertencentes a 18 famílias e cinco ordens. A curva de rarefação tendeu à estabilização e o estimador ?Chao 1? indicou 66 espécies para a área. A maioria das espécies foi considerada rara e acidental. Os índices de Shannon encontrados são...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Ictiofauna; Diversidade; Distribuição espacial; Fish species; Diversity.; Spatial distribution..
Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1000109
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Introduction à l'aquaculture des poissons - Analyse de la filière "Pisciculture" ArchiMer
Harache, Yves.
Tipo: Text Palavras-chave: Fish species; World trade; Fish farming.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-1563.pdf
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WIOMSA Newsbrief OceanDocs
Coelacanth has, for the first time, been found to occur off the Tanzanian coast. On the 9 September 2003, Coelacanth was caught by a fisher off Songo Mnara Island in Kilwa. The fish was caught in a net at a depth of 100m, which is only a few hundred meters from shore. The coelacanth, 132cm long and weighing 40 kilogrammes, was first kept at the Marine Parks and Reserves Unit in Dar es Salaam for processing before it is preserved and put on display at the National Museum in Dar es Salaam for public viewing. No coelacanth had ever before been recorded in Tanzanian African waters, so this was a very good find. And it came only few weeks after the Tanzanian Government through its National Coelacanth Committee hosted a research and training ship MV FRS ALGOA at...
Tipo: Other Palavras-chave: Fish species.
Ano: 2003 URL: http://hdl.handle.net/1834/406
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A new species of deepwater flathead, Bembras adenensis (Scorpaeniformes: Bembridae) from the western Indian Ocean OceanDocs
Knapp, L.W.; Imamura, H..
A new bembrid, Bembras adenensis, is described on the basis of specimens collected from the Gulf of Aden, western Indian Ocean. This species is easilydistinguished from B. japonica, the only known congener of the genus, by thefollowing combination of characters: larger orbital diameter, longer head length,pectoral-fin with a small black blotch near tip of upper rays, 3 gill rakers on upper gillarch, 19 pectoral-fin rays, and 15 anal-fin rays (vs. smaller orbital diameter, shorter head length, pectoral-fin with several small spots forming irregular bands, 2 gill rakerson upper gill arch, usually 17 pectoral-fin rays, and 14 anal-fin rays in B. japonica).
Tipo: Journal Contribution Palavras-chave: Fish species.
Ano: 1997 URL: http://hdl.handle.net/1834/955
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Evaluation des stocks de Brachydeuterus auritus et Pseudotolithus spp. par les méthodes d'analyse de fréquences de taille. OceanDocs
Konan, Kouadio Justin; Sylla, Soumaïla; Diaha, N'guessan Constance; Joanny, Tapé Gnahoré; Atsé, Boua Célestin.
Cette méthode d'évaluation a montré que les deux espèces démersales sont surexploitées dans les eaux maritimes de Côte d'Ivoire. Cette méthode de routine utilisée pour évaluer les stocks pélagiques et démersales de l'Atlantique centre-est par la FAO. Au vu des résultats sur la distribution des fréquences de taille et en attendant des études bio-écologiques de ces espèces, il est impératif que des mesures soient prises pour limiter la capture de spécimens de petites tailles.
Tipo: Journal Contribution Palavras-chave: Harvesting; Samples; Catch effort; Fish species.
Ano: 2011 URL: http://hdl.handle.net/1834/5810
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Observations macroscopiques des gonades de deux espèces de Mugilidés: Liza falcipinnis et Mugil cephalus. OceanDocs
Djadji, E.L.G.; Sylla, S.; Atsé, B.C..
L'étude descriptive de ces différents stades de maturation sexuelle nous permettra de mieux cerner l'approche macroscopique des observations. Elle est d'autant plus importante que le dimorphisme sexuel dans cette famille est inexistant et que la détermination du sexe des individus nécessite une dissection.
Tipo: Journal Contribution Palavras-chave: Fish species; Reproductive cycle.
Ano: 2010 URL: http://hdl.handle.net/1834/5775
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Crown of Thorns Starfish in the Western Indian Ocean OceanDocs
Schleyer, M..
Increasing numbers of crown-of-thorns starfish (COTs) Acanthaster planci are being found in the Indo-Pacific region (Engelhard 1996, Lassig and Engelhard 1994, Stump 1996). However, there appears to be a gap in the information presented by Lassig and Engelhard (1996) for the Western Indian Ocean (WIO). The Oceanographic Research Institute (ORI) in Durban has been involved in coral reef research in a number of areas in the WIO during this decade and has encountered COTs outbreaks since September 1994. The following brief account summarizes these observations.
Tipo: Journal Contribution Palavras-chave: Fish species.
Ano: 1998 URL: http://hdl.handle.net/1834/632
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Environments of the Black-chinned Tilapia, Sarotherodon Melanotheron, and Their Potential Effects on the Genetic Structure of Stocks in Ghana OceanDocs
Abban, E.K.; Asante, A.K.; Falk, T.M..
Ghana is one of the countries bordering theAtlantic Ocean on the coast of Africa. The country is located between latitudes 5" N and11" N and longitudes 1" E and 3" W Thecoastline of Ghana, approximately 550 kmlong, is dotted with about 50 lagoons andestuaries that, together with rocky capes and avariety of sandy bays, constitute its coastalwetlands (Armah 1993). These lagoons,estuaries and associated floodplains providehabitats for a variety of wildlife including birdsand fishes (Ntiamoa-Baidu 1991). With an estimated 40 000 ha surface area, the lagoonsare important fish and fisheries resources forassociated communities. The fish speciescomposition of these lagoons varies slightly,but a constant and predominant species is theblack-chinned tilapia,...
Tipo: Proceedings Paper Palavras-chave: Fish species; Stock assessment.
Ano: 2000 URL: http://hdl.handle.net/1834/698
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Distribución y estructura poblacional de la polaca (Micromesistius australis) OceanDocs
Perrotta, R.G..
The polaca (Micromesistius australis)is a typical fish from the cold Malvinas current (temperatures between 3° and 10°C). The species is found in depths between 90 and 800 m and in latitudes from 37°40' to 50° S during winter and spring and from 42°S to 55°S during summer time, over the patagonian shelf and Burdwood Bank. One part of the stock reaches the southern region of the Scotia Sea, the western South Georgias and eastern South Shetland Islands. The dominant food species are Euphausia spp. The polaca is mainly a carcinophagous fish and may be found in a 3-4 trophic level, being one of the main food sources for primary and secondary ichthyophagous fishes.
Tipo: Journal Contribution Palavras-chave: Size distribution; Spawning grounds; Feeding; Fish species; Feeding; Spawning grounds; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_7277.
Ano: 1982 URL: http://hdl.handle.net/1834/2049
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A collection of marine fishes from Angola, with notes on new distribution records OceanDocs
Denis Tweddle; Eric Anderson.
Collections of fishes from demersal trawl surveys to 800 m depth off the Angolan coast in 2001, 2002 and 2005 resulted in several range extensions tabulated here. Specimens of species poorly represented in previous collections allowed improved diagnoses of Myxine ios, Torpedo bauchotae, Dysommina rugosa, Pisodonophis semicinctus, Xenomystax congroides, Lestidiops cadenati, Ophidion lozanoi, Cataetyx bruuni, Dibranchus atlanticus, Diceratias pileatus, Himantolophus paucifilosus, Neomerinthe folgori, Careproctus albescens, Paracaristius maderensis and Pachycara crossacanthum. All specimens accessioned into the Fish Collection of the South African Institute for Aquatic Biodiversity are listed and colour plates show a selection of species from the trawl catches
Tipo: Journal Contribution Palavras-chave: Demersal fish; Trawls; Fish species; Marine fish.
Ano: 2007 URL: http://hdl.handle.net/1834/5148
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Review of Fisheries Biology of Scomberomorus and Acanthocybium Species in the Western Indian Ocean (FAO Area 51) OceanDocs
Siddeek, M. S. M..
The seerfish group (Scomberomorus and Acanthocybium species) contributes less than 2% to the total landings from the western Indian Ocean (FAO Area 51, Fig. 1) (FAO 1994). Although its contribution is minor in quantity when compared with the landings of other major fish groups, it is considered as the prime fish in almost all the countries bordering this area. Seerfish fetch a higher price per kilogram than any other marine fin-fish landed in these countries. It is also a valuable export product in some of these countries (e.g., Oman). The high demand appears to have triggered over-exploitation of some stocks living in this region. Therefore, research studies are needed to assess these stocks to formulate appropriate management and development plans....
Tipo: Working Paper Palavras-chave: Fisheries biology; Fish species.
Ano: 1995 URL: http://hdl.handle.net/1834/514
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Fatty acid composition of the catfish -1: Heterobranchus longifillis (Pisces: clariidae and Chyrsichthys nigrodigitatus (Pisces: Bagridae) reared in tropical fresh waters OceanDocs
Omuaru, V.; Idoniboye-Obu, T.I.E..
The relationship of the fatty acid composition of the three developmental stages (fingerling, juvenile and adult) of Heterobranchus longifilis (Pisces: Clariidae) and Chrysichthys nigrodigitatus (Pisces: Bagridae) have been evaluated by gas liquid chromatography (Glc) on polyethylene glycol-2-nitroterephthalic ester (PEGNTE). Results indicated that adults of these fishes, accumulated linolenic acid (C18:3w3) above dietary levels atthe fingerling stage which was remarkably depleted in the adult fishes. Its essentiality in their nutrition and metabolism is thus suggested. In the metabolic tumover,.C18:3w3, is utilized to build up the store of eicosapentaenoic acid (C20:5w3), inHeterobranchus longifillis while the store of eicosapentaenoic acis (C20:5w3),...
Tipo: Journal Contribution Palavras-chave: Palmitic acid; Docosatetraenoic acid; Gas liquid chromatography; Eicosapentaenoic acid; Oleic acid; Polyethylene glycol-2-nitroterephthalic ester; Linolenic acid; Arachidonic acid; Fish species.
Ano: 1998 URL: http://hdl.handle.net/1834/646
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Short-term variability in alongshore winds and temperature off Swakopmund, Namibia, during a non-upwelling event in 1998-1999. OceanDocs
Bartholomae, Ch.; Hagen, E..
Swakopmund is a popular coastal resort in Namibia, especially during the summer holiday season when daily sea temperatures can fluctuate several degrees in a short period. Hourly measurements of the nearbottom water temperature were collected off the Swakopmund Jetty to investigate the thermal variability in relation to local winds. The thermal regime of this coastal region appears to be controlled by the locally forced Ekman offshore transport. Related changes in offshore transport led those of the surf-zone temperature by about one day. A transfer of kinetic energy from the alongshore wind into the temperature field of the nearshore zone dominated relative short time scales (hourly). The longer periods (7–9 days) are associated with the forcing of...
Tipo: Journal Contribution Palavras-chave: Variability; Winds; Temperature; Upwelling; Fish species; Shelf geology; Currents (water); Anomalies; Surf; Continental shelf; Coastal upwelling; Nearshore environment.
Ano: 2007 URL: http://hdl.handle.net/1834/4936
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First record of the Rubber-lip grunt Plectorhinchus mediterraneus (Guichenot 1850) (Osteichthyes: Haemulidae) in Tunisian waters (Central Mediterranean) OceanDocs
Hattour, A.; Bradai, M. N..
Nous enregistrons ici la première observation du Diagramme gris Plectorhinchus mediterraneus (Guichenot, 1850) dans le centre Est de la Tunisie. Cette espèce atlanto-méditerranéenne à affinité chaude franche vit principalement dans le sud-est atlantique et signalée également en Méditerranée occidentale et en Adriatique, a été trouvé pour la première fois sur les côtes centre-est de la Tunisie à Salakta. Les deux spécimens capturés en avril 2011 aux filets maillants de fond sont deux mâles adultes mesurant respectivement 36 et 42 cm de longueur totale. Le présent article rapporte cette nouvelle observation qui pourrait indiquer l’établissement de l’espèce dans la région. Nous donnons par ailleurs une courte description de l'espèce et un commentaire sur sa...
Tipo: Journal Contribution Palavras-chave: Fish species; Invasive species; Haemulidae.
Ano: 2011 URL: http://hdl.handle.net/1834/4746
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El pez león OceanDocs
Smith, K.; Pérez, A..
De forma amena, didáctica y muy ilustrada se describe la taxonomía, distribución, orígenes, alimentación, parásitos, recetas de cocinas y otros temas de interés de esta especie invasora para aguas marinas de Cuba y el Caribe.
Tipo: Other Palavras-chave: Fish species.
Ano: 2011 URL: http://hdl.handle.net/1834/4133
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A Sea Change : Exotics In The Eastern Mediterranean OceanDocs
Galil, B.S.; Zenetos, A..
The eastern Mediterranean is susceptible to biological invasions because of its placement between the Atlantic, Pontic and Erythrean regions, busy maritime traffic, and lagoons and bays that are crowded with fish and shellfish farms. However, the greatest influx of invaders resulted from the opening of the Suez Canal in 1869, which allowed entry of Indo-Pacific and Erythrean biota. Exotic macro phytes, invertebrates and fish are found in most coastal habitats in the eastern Mediterranean. Some invaders have outcompeted or replaced native species locally, some are considered pests or cause nuisance, whereas other invaders are of commercial value. However, at variance with other invaded seas, the invasion into the eastern Mediterranean has increased the...
Tipo: Book Section Palavras-chave: Aegean; Red Sea; Shipping Mariculture; Suez Canal; Biological Invasions; Levantine; Ionian; Fish species; Aquatic living resources; Invasive species; Http://aims.fao.org/aos/agrovoc/c_49865.
Ano: 2002 URL: http://hdl.handle.net/1834/672
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Différenciation génétique des espèces de Chrysichthys de la rivière Bia. OceanDocs
Ouattara, T.A.S.; Adepo-Gouréné, A.B.; Atsé, B.C..
Ces résultats nous laissent supposer que dans la Bia, nous avons plus de deux espèces de Chrysichthys. Soit, nous avons quatre espèces assez distinctes les unes des autres mais dont trois sont assez proches de par leurs caractères morphologiques soit, nous avons des espèces hybrides des deux espèces jusque là connus et une troisième espèce non encore répertoriée dans la Bia. Ce travail préliminaire méritait d'être poursuivi avec un nombre plus élevé de spécimens et l'étude d'un plus grand nombre de systèmes enzymatiques. A la différenciation génétique, seront associée une étude morphologique et morphométrique. Cette étude s'avère d'autant plus importante qu'elle porte sur des espèces de poissons intéressant l'aquaculture en Côte d'Ivoire et en général en...
Tipo: Journal Contribution Palavras-chave: Fish species; Cell differentiation.
Ano: 2010 URL: http://hdl.handle.net/1834/5779
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A Simple Non-Parametric Gis Model For Predicting Species Distribution: Endemic Birds In Bioko Island OceanDocs
Fa, J.E.; Lenton, S.M.; Del Val, J.P..
Species mapping is a useful conservation tool for predicting patterns of biological diversity, or identifying geographical areas of conservation significance. Mapping can also improve our understanding of the appropriateness of habitat areas for individual species. We developed a new model, PREDICT, for mapping habitat suitability of plant and animal species from incomplete field survey data. PREDICT is a statistical program written for use within a GIS (geographic information system). It produces images and statistics that assess the potential of unstudied areas for wildlife for which presence/absence data and basic habitat information are available. Suitability for a target species is determined within surveyed and non-surveyed squares by a form of...
Tipo: Journal Contribution Palavras-chave: GIS; Biodiversity; Fish species.
Ano: 2000 URL: http://hdl.handle.net/1834/705
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Première signalisation de l'oursin irrégulier <Echinocardium mediterraneum> (Forbes, 1844) sur les côtes tunisiennes OceanDocs
Sellem, F.; M’rabet, R..
The present work signals for the first time the presence of <Echinocardium mediterraneum> on the Tunisian coast and precisely in the bay of Tunis by 5 meters depth.
Tipo: Journal Contribution Palavras-chave: Fish species; Echinoderm fisheries; Sea urchin fisheries; Echinodermata; Http://aims.fao.org/aos/agrovoc/c_2459.
Ano: 2002 URL: http://hdl.handle.net/1834/250
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Note de conjoncture OceanDocs
L’analyse des résultats de la pêche artisanale, des sites sous revus, au premier semestre 2012, révèle une hausse globale de 13% des débarquements et de 15% de la valeur commerciale estimée (VCE) par rapport à la même période de 2011. Le sous secteur de la pêche industrielle, à l’exception de la pêche sardinière qui n’a pas fait l’objet de d’analyse dans cette note par faute de données disponibles, se caractérise par une baisse des débarquements de la pêche chalutière de 33% et une production de 1403,71 tonnes de la thonière au premier semestre 2012 comparativement à la même période de 2011 qui n’avait pas enregistré de débarquements. La transformation artisanale au niveau du site de Joal est marquée par une faible baisse de 4% de la production. Cette...
Tipo: Report Palavras-chave: Artisanal fishing; Fishing industry; Fish species; Landing statistics; Processing fishery products; Markets; Tuna fisheries; Trawling; Sardine fisheries; Exports; Trade.
Ano: 2013 URL: http://hdl.handle.net/1834/4723
Registros recuperados: 29
Primeira ... 12 ... Última
 

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