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| 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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| Tserpes, George; Massutí, Enric; Fiorentino, Fabio; Facchini, Maria Teresa; Viva, Claudio; Jadaud, Angelique; Joksimovic, Aleksandar; Pesci, Paola; Piccinetti, Corrado; Sion, Letizia; Thasitis, Ioannis; Vrgoc, Nedo. |
| The present work examines the spatio-temporal biomass trends of Mullus barbatus and Mullus surmuletus in the Mediterranean Sea through the analysis of a time series of data coming from the Mediterranean International Trawl Surveys (MEDITS), accomplished annually from 1994 to 2015. The biomass of both species showed clear declining trends below 150 to 200 m depth, which were steeper in the case of M. barbatus. Increases in temporal biomass trends were observed for M. barbatus from 2008 onward in most geographic sub-areas (GSAs), while stability was mostly observed for M. surmuletus. For both species, dynamic factor analysis revealed similarities among neighbouring GSAs and the subsequent cluster analysis identified two major GSA groups corresponding to the... |
| Tipo: Text |
Palavras-chave: Red mullet; Striped red mullet; Distribution; Trends; Mediterranean. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00489/60056/63336.pdf |
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| Carpentier, André; Coppin, Franck. |
| Ifremer carries out a yearly bottom trawl survey named Channel Ground Fish Survey (CGFS) in order to collect essential biological data on major exploited fish species in the Eastern Channel. These data are also provided to feed the indispensable historic series to the yearly assessment of resources. This report presents results of the CGFS surveys for 1997 and 1998, under two aspects : a multispecific approach of the biological assemblages and integrating an interannual analysis, then a monospecific analysis of 7 species of commercial interest, as whiting, pout, cod, red gurnard, plaice, black bream, red mullet. |
| Tipo: Text |
Palavras-chave: Campagne; Chalutage; Manche orientale; Distribution; Abondance; Répartition; Cartographie; Multiespèces; Merlan; Merlangius merlangus; Tacaud; Trisopterus luscus; Morue; Gadus morhua; Grondin rouge; Aspitrigla cuculus; Plie; Pleuronectes platessa; Griset; Spondyliosoma cantharus; Survey; Trawling; Eastern Channel; Distribution; Abundance; Cartography; Multi-species; Whiting; Merlangius merlangus; Pout; Trisopterus luscus; Cod; Gadus morhua; Red gurnard; Aspitrigla cuculus; Plaice; Pleuronectesplatessa; Black bream; Spondyliosoma cantharus; Red mullet. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00306/41762/40975.pdf |
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