Trenkel, Verena; Lorance, Pascal; Berthele, Olivier; Ferrant, Anthony; Le Piver, David; Rochet, Marie-joelle
The data come from bait experiments that were carried out at three study sites (Meriadzek Terrace, terrace located between the canyon of Belle Île and the canyon of St Nazaire referred to as St Nazaire Terrace, and Belle Île Canyon) on the continental slope of the Bay of Biscay during the VITAL cruise in late August and early September 2002 using the ROV Victor 6000. A full description of the experiments and results can be found in Trenkel and Lorance (2011).
The depth range 1100 – 1500 m was investigated in all sites by perpendicular strip transects starting from the...
Gaillard, Fabienne; Mercier, Herle; Kermabon, Catherine
The Programme Ocean Multidisciplinaire Meso Echelle (POMME) was designed to describe and quantify the role of mesoscale processes in the subduction of mode waters in the Northeast Atlantic. Intensive situ measurements were maintained during 1 year (September 2000 - October 2001), over a 8 degrees square area centered on 18 degrees W, 42 degrees N.
In order to synthesized the in-situ physical observations, and merge them with satellite altimetry and surface fluxes datasets, a simplified Kalman filter has been designed. Daily fields of temperature, salinity, and stream function were produced on a regular grid over a full seasonal cycle. We...
Reynaud, Thierry; Desprez De Gesincourt, Floriane; Gaillard, Fabienne
Observations of Sea surface temperature and salinity are now obtained from voluntary sailing ships using medium or small size sensors. They complement the networks installed on research vessels or commercial ships. The delayed mode dataset proposed here is upgraded annually as a contribution to GOSUD (http://www.gosud.org )
Gaillard, Fabienne; Diverres, Denis; Jacquin, Stéphane; Gouriou, Yves; Grelet, Jacques; Le Menn, Marc; Tassel, Joelle; Reverdin, Gilles
French Research vessels have been collecting thermo-salinometer (TSG) data since the early 2000 in contribution to the GOSUD programme. The set of homogeneous instruments is permanently monitored and regularly calibrated. Water samples are taken on a daily basis by the crew and later analysed in the laboratory. We present here the delayed mode processing of the 2001-2013 dataset and an overview of the resulting quality. The careful calibration and instrument maintenance, complemented with a rigorous adjustment on water samples lead to reach an accuracy of a few 10-² PSS in salinity or evenless. Global comparison with the ISAS13 ARGO gridded...
Bouget, Jean-francois; La Gandera De, Fernando
The pilot scale pursuit of ovogenesis in sea bass (Dicentrarchus .labrax L.) has been realized under photoperiod control in different seasons with the consequent variations in temperature. 5 lots of spawners have been kept in 12 m3 tanks: 3 in spring ascent temperature conditions with similar results; 1 in the last phase of descent temperature in autumn, and 1 with natural photoperiod and temperature conditions.
In all cases the spawn was induced with LHRHa obtaining identical quantity and quality results.
From comparison of results in the 5 lots can be infer that ovogenesis development is independent of temperature range but a descent...
Hernandez, Ivan; Gaspar, Alfredo
Zooplankton abundance, biomass and composition were evaluated in various temporal scales in a seasonal coastal upwelling system at Margarita Island, Venezuela. Scales of temporal variation include weeks, months and seasons (relaxation, upwelling and transition). Seasons were delimitated by upwelling index and sea temperature. The sampling period comprise Sept/2002 - July/2003. Zooplankton samplings were made by horizontal trawls (1-10m depth), using 200,mu m nets, 2-6km from the coastal margin. Total abundance show important variation at week scales, with different patterns between locations, while seasonal differences of abundance are marginal. Biomass only shows seasonal variation due significant reduction in the transition season....
Van Wormhoudt, Alain; Le Moullac, Gilles; Klein, Birgit; Sellos, Daniel
Las tripsinas, entre las proteasas, y las amilasas, entre las carbohidrasas, son las enzimas más activas en Penaeus vannamei, un camarón de interés comercial, especialmente en Latinoamérica. Estas enzimas y sus cDNAS fueron caracterizados. En lo que respecta a las tripsinas, se reconocieron cinco isoformas y se analizaron sus cDNAs correspondientes, los cuales codifican una preproenzima de 225 aminoácidos conteniendo un supuesto precursor
peptídico de 14 residuos y una secuencia señal altamente hidrofobica de 14 aminoácidos. Dentro de la secuencia del zimogeno, se detectaron algunos sitios autocatalíticos (Int. J. Biochem. Cell Biol. 1996, 28, 551-563). Con respecto a las amilasas, dos...
Lacroix, Denis; Griessinger, Jean-michel
Le Moullac, Gilles; Phillip De Laborie, Loic; Saulnier, Denis; Goarant, Cyrille; Dehasque, Marleen
Anderson (1992) y Raa (1996) han escrito impresionantes críticas acerca del uso de inmunoestimulantes en acuacultura. La mayoría de los trabajos citados se refieren principalmente al cultivo de peces y pocos acerca del camarón. Así que este trabajo está enfocado al camarón y las pocas pruebas publicadas. Varios de los inmunoestimulantes y su manera de actuar sobre el sistema inmune en camarones se describen brevemente, así como los métodos usados para administrar las sustancias inmunoestimulatorias para camarón. La dificultad para experimentar en este campo está señalada con algunos ejemplos.