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Registros recuperados: 6
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Analyse descriptive de la pêcherie du golfe de Tunis OceanDocs
Ben Abdallah, L.; El Abed., A.; Zarrad., R.; Missaoui., H.; Gharbi., H..
Ce travail décrit les résultats de la campagne de pêche benthique dans le golfe de Tunis. Durant la campagne de 1999, les ressources benthiques du golfe sont exploitées par 45 chalutiers. Ces unités ont enregistré une production de 590 tonnes qui est voisine à celle de deux années précédentes. Les débarquements sont constitués essentiellement de merlu Merluccius merluccius , rouget blanc Mullus barbatus, saurel Trachurus sp., chevrette Parapenaeus longirostris, pageot Pagellus sp. et spicarel Spicara sp. Le chalutage expérimental dans le golfe a donné un rendement horaire de 45Kg et un pourcentage de rejet évalué à 16%. L'étude des structures démographiques des principales espèces montre que l'exploitation dans le golfe s'effectue sur des groupes d'âge...
Tipo: Journal Contribution Palavras-chave: Gadoid fisheries; Carangid fisheries; Mullet fisheries; Bottom trawling; Catch composition; Fishery surveys; Spicara; Trachurus; Merluccius merluccius; Parapenaeus longirostris; Mullus barbatus; Pagellus; Http://aims.fao.org/aos/agrovoc/c_33883; Http://aims.fao.org/aos/agrovoc/c_7842; Http://aims.fao.org/aos/agrovoc/c_41529; Http://aims.fao.org/aos/agrovoc/c_46329; Http://aims.fao.org/aos/agrovoc/c_43349; Http://aims.fao.org/aos/agrovoc/c_5502.
Ano: 2000 URL: http://hdl.handle.net/1834/4297
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Bioindicators of pollutant exposure in the northwestern Mediterranean sea ArchiMer
Burgeot, Thierry; Bocquene, Gilles; Porte, C; Dimeet, Joel; Santella, Rm; Garcia De La Parra, L.m.; Pihol-leszkowicz, A.; Raoux, C.; Galgani, Francois.
Several bioindicators were used to evaluate the biological and genotoxic effects of marine pollutants near large coastal cities in the northwestern part of the Mediterranean Sea. Three target species of teleosts were selected: red mullet Mullus barbatus and 2 types of comber (Serranus hepatus and S. cabrilla). Induction of ethoxyresorufin-O-deethylase (EROD) activity specific for polycyclic aromatic hydrocarbons (PAH) and polychlorinated biphenyls (PCB) was measured in the livers of the fish, and inhibition of acetylcholinesterase (AChE) by organophosphorus insecticides and carbamates was measured in their muscle tissues. Maximal EROD activities (16.8 +/- 2.7 to 19.4 +/- 4.2 pmol min(-1) mg protein(-1)) recorded in red muller near Barcelona (Spain),...
Tipo: Text Palavras-chave: EROD; GST; AChE; Antioxidant enzymes; Biomonitoring; DNA adducts; PAH; Mullus barbatus.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00183/29410/27779.pdf
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Experimental and theoretical study of red mullet (Mullus barbatus) selectivity in codends of Mediterranean bottom trawls ArchiMer
Sala, Antonello; Priour, Daniel; Herrmann, Bent.
The objective of this study was to investigate the effect on Mullus barbatus (red mullet) codend selectivity by increasing the codend mesh size or reducing the number of meshes in the codend circumference. This was performed through experimental sea trials and computer simulations. The sea trials were carried out in the Adriatic Sea using a polyamide codend in order to assess its selectivity, to record morphological (height, width and length) and population size structure parameters of red mullet (Mullus barbatus). The selectivity process in the codend was also simulated with an individual-based model (PRESEMO) and a finite element model (FEMNET) to calculate the codend shapes. By adjusting the behavioural description of red mullet in the simulation, the...
Tipo: Text Palavras-chave: Mediterranean Sea; Mullus barbatus; Red mullet; Codend shape simulation model; Trawl; Codend selectivity.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2200.pdf
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Explorative analysis on red mullet (Mullus barbatus) ageing data variability in the Mediterranean ArchiMer
Carbonara, Pierluigi; Zupa, Walter; Anastasopoulou, Aikaterini; Bellodi, Andrea; Bitetto, Isabella; Charilaou, Charis; Chatzispyrou, Archontia; Elleboode, Romain; Esteban, Antonio; Follesa, Maria Cristina; Isajlovic, Igor; Jadaud, Angelique; Garcia-ruiz, Cristina; Giannakaki, Amalia; Guijarro, Beatriz; Kiparissis, Sotiris Elias; Ligas, Alessandro; Mahe, Kelig; Massaro, Andrea; Medvesek, Damir; Mytilineou, Chryssi; Ordines, Francesc; Pesci, Paola; Porcu, Cristina; Peristeraki, Panagiota; Thasitis, Ioannis; Torres, Pedro; Spedicato, Maria Teresa; Tursi, Angelo; Sion, Letizia.
The uncertainty in age estimation by otolith reading may be at the root of the large variability in red mullet (Mullus barbatus) growth models in the Mediterranean. In the MEDITS survey, red mullet age data are produced following the same sampling protocol and otolith reading methodology. However, ageing is assigned using different interpretation schemes, including variations in theoretical birthdate and number of false rings considered, in addition to differences in the experience level of readers. The present work analysed the influence of these variations and the geographical location of sampling on red mullet ageing using a multivariate approach (principal component analysis). Reader experience was the most important parameter correlated with the...
Tipo: Text Palavras-chave: Mullus barbatus; Age variability; MEDITS; Mediterranean; Reader effect; False rings; Date of birth.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00591/70320/68356.pdf
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Use of MEDITS trawl survey data and commercial fleet information for the assessment of some Mediterranean demersal resources ArchiMer
Abella, Alvaro; Belluscio, Andrea; Bertrand, Jacques; Carbonara, Pier Luigi; Giordano, Daniela; Sbrana, Mario; Zamboni, Ada.
An assessment of the state of the fisheries of hake, red mullet and Norway lobster was carried out by using trawl survey data from the MEDITS research programme. The assessment was performed by means of the application of a composite model utilising the total mortality rate Z as a direct index of fishing effort. The studied area covered the whole western Italian coast (Ligurian and Tyrrhenian seas) and the eastern coasts of Corsica. The area was divided into twelve sub-areas, considered to be of similar ecological characteristics with similar initial productivity but considered to experience different rates of exploitation. Available information on fishing fleets and their geographic distribution was used in creating sub-areas. For each one of these...
Tipo: Text Palavras-chave: Modèles composites; Estimation des stocks; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Méditerranée; Composite models; Stock assessment; Merluccius merluccius; Mullus barbatus; Nephrops norvegicus; Mediterranean sea.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00188/29876/28360.pdf
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Using the ALADYM simulation model for exploring the effects of management scenarios on fish population metrics ArchiMer
Spedicato, Maria Teresa; Poulard, Jean-charles; Politou, Chrissi-yianna; Radtke, Krzysztof; Lembo, Giuseppe; Petitgas, Pierre.
Simulation of fisheries systems is a widely used approach that integrates monitoring and assessment tools. We applied the ALADYM (age-length based dynamic model) simulation model to three different studies aimed at investigating correlations between pressure and population metrics, exploring the viability of different mortality levels in long-term scenarios and predicting the effects of combined management measures. Uncertainty was incorporated into the simulations following the Monte Carlo paradigm. Three stocks were used for these exercises: red mullet in the central-southern Tyrrhenian Sea and European hake in both the Bay of Biscay and the Aegean Sea. The analysis of the relationships between total mortality and indicators highlighted significant...
Tipo: Text Palavras-chave: Simulation model; Model-based indicators; Fishery management; Reference points; Mullus barbatus; Merluccius merluccius; Mediterranean Sea; Atlantic Ocean.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12226/9008.pdf
Registros recuperados: 6
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