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Registros recuperados: 8
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Aspects techniques d’exploitation du métier trémails à crevettes dans le golfe de Gabès OceanDocs
Bdioui, M.; M’rabet, R.; Ben Naceur, L.; Missaoui, H.; Ben Salem, S..
The investigations realised with fishermen and the consultation of the statistical official documents, confirmed the importance of shrimp’s trammel nets métier in this area. The concerned fleet could be divided into two categories: a modern fleet characterised by variables means of production and sophisticated equipments. The second, the most numerous was a typically small scale fleet which suffers of the lack of means. Moreover, these investigations gave arise to the identification of several models of shrimp’s trammel nets assembly.
Tipo: Journal Contribution Palavras-chave: Trammel nets; Trémails à crevettes <; Penaeus kerathurus>; Shrimp fisheries.
Ano: 2004 URL: http://hdl.handle.net/1834/1552
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Distribution spatiale de l'ichtyoplancton en été et en automne et conditions environnementales dans le golfe de Tunis OceanDocs
Romdhane, M.S.; El Abed, A.; Zarrad, R.; M’rabet, R.; Missaoui, H..
Pendant l’été et l’automne de l’année 2002, deux campagnes d’étude de l’ichtyoplancton ont été effectuées dans le golfe de Tunis. La température moyenne des eaux de surface a été de 25,51°c en été et 21,85°c en automne. Les œufs et les larves ont été plus abondants en été qu’en automne (360 œufs /10m² et 244 larves /10m² en été et 115 œufs /10m² et 174 larves /10m² en automne). Les paramètres environnementaux : température, salinité oxygène dissous, pH, chlorophylle a et abondance du mésozooplancton ne semblent pas avoir une influence directe sur la distribution spatiale de l’ichtyoplancton. Cependant, la bathymétrie semble avoir une influence sur cette distribution.
Tipo: Journal Contribution Palavras-chave: Mésozooplancton; Golfe de Tunis; Plankton; Zooplankton MED; Tunisia; Tunis Gulf Abundance Distribution Environmental factors Ichthyoplankton Zooplankton Distribution Environmental factors Zooplankton http://aims.fao.org/aos/agrovoc/c_35773 http://aims.fao.org/aos/agrovoc/c_2594 http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2003 URL: http://hdl.handle.net/1834/1075
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Essai et mise au point d'un chalut de fond à grande ouverture verticale (gov) OceanDocs
Bdioui, M.; M’rabet, R.; Ben Naceur, L..
The main object of this study is to develop a big vertical opening bottom trawl (GOV) adapted to the Tunisian fisheries. Two models of trawls were tested. One for a trawler with 600 horse power engine and another model for a trawler with 900 horse power engine. The obtained results in this study show that the two models of trawls tested are efficient, especially in the areas where we found benthic and pelagic species together. Further more, the yield of these trawls is higher than that of the shrimp’s trawl, the most gear used in Tunisian water.
Tipo: Journal Contribution Palavras-chave: Chalut de fond; Fisheries technologies; Technique de pêche; Bottom trawl; Trawls.
Ano: 2003 URL: http://hdl.handle.net/1834/885
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Première mention du poisson-bourse <Stephanolepis diaspros> (Fraser - Brünner, 1940) dans la lagune de Bizerte OceanDocs
Haouas-Gharsallah, I.; Bdioui, M.; Ben Naceur, L.; M’rabet, R..
The present study signals for the first time the presence of the reticulated leatherjacket, <Stephanolepis diaspros> in Bizerte lagoon. The specimen was fished in October 2004 by trammel nets between 5 and 7 meter depth.
Tipo: Journal Contribution Palavras-chave: MED Tunisia Bizerte L. <; Stephanolepis diaspros>; Geographical distribution Fish Geographical distribution http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 2004 URL: http://hdl.handle.net/1834/1157
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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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Recensement du grand dauphin <Tursiops truncatus> OceanDocs
Ben Naceur, L.; Gannier, A.; Bradai, M.N.; Drouot, V.; Bourreau, S.; Laran, S.; Khalfallah, N.; M’rabet, R.; Bdioui, M..
In the setting of a program of census and identification of cetaceans in the Tunisian waters, started in 2001 by a pilot campaign limited to the region of the Sahel (of Sousse to The Chebba), the INSTM (National Institute of Sea Sciences and Technologies of Tunisia) and the CRC-Marineland (Center of Research on the Cetacean Antibes, France) achieved a second prospecting campaign from the first to May 28, 2003. This campaign, baptized « ASPIS 2003 », concerned the zone of the 15 MN of Kélibia to Zarzis, in the east and the south of the country. The north zone has not been prospected practically following bad weather. The density of the common bottlenose dolphin <Tursiops truncates> has been estimated to 0,19 animals/km2, with a coefficient of...
Tipo: Journal Contribution Palavras-chave: Recensement; Cétacés; Cetaceans <; Tursiops truncatus>; Tunisia Census Marine mammals.
Ano: 2004 URL: http://hdl.handle.net/1834/1554
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Régime alimentaire de symphodus (Crenilabrus) ocellatus des côtes sud de la Tunisie OceanDocs
Bouain, A.; Ouannes-Ghorbel, A.; Jarboui, O.; M’rabet, R..
Symphodus (Crenilabrus) ocellatus of the Tunisian southern Gabes coasts feeds on the small bentic invertebrates of shallow medowe bed. The preferential preys of this Labridae fish are crustaceans and mollusces. Trophic variations of this fish by seasons show its specific adaptive response to changes in environment.
Tipo: Journal Contribution Palavras-chave: MED; Tunisia; South coast; Régime alimentaire; Crustacés; Mollusques; Côtes sud de la Tunisie Symphodus ocellatus Labridae Diets Food organisms Prey selection Shellfish Zoobenthos Shellfish Zoobenthos http://aims.fao.org/aos/agrovoc/c_7033 http://aims.fao.org/aos/agrovoc/c_15487.
Ano: 2003 URL: http://hdl.handle.net/1834/1074
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Variabilité mensuelle du zooplancton et de l'ichtyoplancton dans le golfe deTunis OceanDocs
Zarrad, R.; El Abed, A.; Missaoui, H.; M’rabet, R.; Romdhane, M.S.; Jarboui, O..
Monthly variability of zooplankton and ichthyoplankton abundance and composition were studied in 6 stations in the Gulf of Tunis between February 2003 and January 2004. Plankton trawls were horizontal, in surface and at night. Study area seems to be influenced by climatic conditions and the outflow of Majreda River that affect the surface temperature and salinity. Copepods, with many abundance picks in the year, formed the most abundant group (84%) followed by cladocerans (8%) and chaetognaths (3%). The swarms of appendicularians, cladocerans and medusas then for zoe are in spring. The highest fish spawning periods was in summer then the highest larva abundance was in winter and summer.
Tipo: Journal Contribution Palavras-chave: Mesozooplankton; Variabilité mensuelle zooplancton; Ichtyoplancton; Golfe de Tunis Tunisia Tunis Gulf Ichthyoplankton Temporal variations Zooplankton Zooplankton http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2004 URL: http://hdl.handle.net/1834/1553
Registros recuperados: 8
Primeira ... 1 ... Última
 

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