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| Registros recuperados: 14 | |
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| Gaudy, R; Youssara, F; Diaz, F; Raimbault, P. |
| Zooplankton biomass was measured at 20 stations located along five coastal-offshore transects in the Gulf of Lions (NW Mediterranean) during spring 1998 and winter 1999, using two nets equipped with 200 and 80 Pm mesh. Biomass was twice as abundant in spring. It increased toward the coast and the west of the gulf and was positively correlated to chlorophyll, primary production and organic particulate matter and negatively to temperature and salinity. The enrichment effect of Rhone river input and the oligotrophic influence of the north Mediterranean current (NMC) were the main distribution factors of zooplankton biomass. Higher biomass was obtained in coastal stations with the 80 mum net, which sampled more efficiently young larval stages and nauplii.... |
| Tipo: Text |
Palavras-chave: Zooplankton; Métabolisme; Cycle saisonnal; Golfe du Lion; Zooplankton; Metabolism; Seasonal cycle; Gulf of Lions. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43262/42993.pdf |
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| Goulletquer, Philippe; Wolowicz, Maciej; Latala, Adam; Geairon, Philippe; Huvet, Arnaud; Boudry, Pierre. |
| Respiration rates of various geographical strains of Crassostrea gigas were compared to assess the respiratory expenditure as a physiological indicator of catabolism (cost of maintenance). Parental oysters, sampled in France (Marennes-Oleron), Japan (Hiroshima), Taiwan (Tunkang) and Spain (Cadix), were differentiated by both their geographic origin and by mitochondrial DNA markers, allowing the distinction between the two closely related taxa Crassostrea gigas and Crassostrea angulata. After reproduction of these parental oysters, respiration rates of spat of each strain, reared under common controlled conditions, were individually estimated at 20 degrees C by using a volumetric microrespirometer. Our results demonstrated that physiological variability... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; NE Atlantic; Oyster strains; Hybrids; Crassostrea angulata; Crassostrea gigas; Metabolism; Respiration rates; Océan Pacifique; Atlantique NE; Souches génétiques; Hybrides; Crassostrea angulata; Crassostrea gigas; Métabolisme; Taux de respiration. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-859.pdf |
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| Gaudy, R; Youssara, F. |
| Respiration, excretion (NH4 and PO4) and feeding of zooplankton from the upper 200 m of the Almeria-Oran frontal region (western Mediterranean), were studied during winter 1997. Eight sites belonging to the three main hydrodynamic structures of the area (Mediterranean water, geostrophic Atlantic jet and associated anticyclonic gyre) were considered. Lowest values of respiration, PO4 excretion, O/P atomic ratio and particle ingestion were found in Mediterranean waters. At the frontal limit, respiration and ammonium excretion were enhanced compared to the adjacent structures (Mediterranean water and Atlantic jet). In the gyre water, lowest O/N and highest N/P values were observed and maximum faecal pellet production and reproduction activity (inferred from... |
| Tipo: Text |
Palavras-chave: Mer d'Alboran; Front; Zooplancton; Métabolisme; Nutrition; Alboran sea; Front; Zooplankton; Metabolism; Feeding. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00322/43275/43006.pdf |
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| Registros recuperados: 14 | |
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