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| Claireaux, Guy; Davoodi, Fariba. |
| The long term consequences of oil exposure upon marine populations are still poorly evaluated. One particular missing piece of information relates to the link between oil exposure, individuals' ability to face environmental contingencies and populations' production and dynamics. In that context, the present paper investigates the impact of oil exposure upon fish cardio-respiratory performance, this performance being viewed as a key determinant of individual fitness. Experimental conditions replicated the contamination conditions observed during the weeks that immediately followed the Erika oil spill (west coast of France; December 1999). Sole (Solea solea), were exposed to number-2 oil for 5 days and were then challenged with an acute rise in temperature... |
| Tipo: Text |
Palavras-chave: Petroleum hydrocarbons; Temperature; Oxygen consumption; Cardiac performance; Environmental adaptation; Solea solea. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00006/11765/9272.pdf |
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| Davoodi, Fariba; Claireaux, Guy. |
| On December 12th, 1999, the oil tanker Erika sank off the southern coast of Brittany (France), releasing 20 00030 000 tons of heavy oil in the open sea. Among the affected coastal habitats were important nurseries for numerous flatfish species and particularly for the common sole, Solea solea. To investigate the potential impact of the spill on this economically significant resource, we employed Fry's concept of metabolic scope for activity to assess the deleterious effect of fuel exposure on the functional integrity of juvenile sole. Fish were captured from uncontaminated areas and experimentally exposed to contamination conditions mimicking those encountered during the weeks that followed the Erika spill. Using respirometry techniques we measured basal... |
| Tipo: Text |
Palavras-chave: Solea solea; Environmental adaptation; Metabolism; Fuel exposure; Erika oil spill. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2798.pdf |
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| Claireaux, Guy; Lefrancois, Christel. |
| Investigating the biological mechanisms linking environmental variability to fish production systems requires the disentangling of the interactions between habitat, environmental adaptation and fitness. Since the number of environmental variables and regulatory processes is large, straightening out the environmental influences on fish performance is intractable unless the mechanistic analysis of the 'fish-milieu' system is preceded by an understanding of the properties of that system. While revisiting the key points in our currently poorly integrated understanding of fish ecophysiology, we have highlighted the explanatory potential contained within Fry's ( Fry 1947 Univ. Toronto Stud. Biol. Ser. 55, 1 - 62) concept of metabolic scope and categorization of... |
| Tipo: Text |
Palavras-chave: Fish; Environmental adaptation; Environmental conditions; Scope for metabolic activity. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3306.pdf |
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| Gaboyer, Frederic; Vandenabeele-trambouze, Odile; Cao, Junwei; Ciobanu, Maria-cristina; Jebbar, Mohamed; Le Romancer, Marc; Alain, Karine. |
| A novel halophilic bacterium, strain RHS90T, was isolated from marine sediments from the Gulf of Lions, in the Mediterranean Sea. Its metabolic and physiological characteristics were examined under various cultural conditions, including exposure to stressful ones (oligotrophy, high pressure and high concentrations of metals). Based on phylogenetic analysis of the 16S rRNA gene, the strain was found to belong to the genus Halomonas in the class Gammaproteobacteria. Its closest relatives are H. axialensis and H. meridiana (98% similarity). DNA-DNA hybridizations indicated that the novel isolate is genotypically distinct from these species. The DNA G+C content of the strain is 54.4 mol%. The main fatty acids (C18:1ω7c, 2-OH iso-C15:0, C16:0 and/or C19:0 cyclo... |
| Tipo: Text |
Palavras-chave: Halomonas; Taxonomy; Environmental adaptation; Metal tolerance; Poly-beta-hydroxyalkanoate; Compatible. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00201/31253/29658.pdf |
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