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Are growth and density quantitative indicators of essential fish habitat quality? An application to the common sole Solea solea nursery grounds ArchiMer
Gilliers, Camille; Le Pape, Olivier; Desaunay, Yves; Morin, Jocelyne; Guerault, Daniel; Amara, Rachid.
Bio-indicators were measured on juvenile fish to assess the quality of eight coastal and estuarine nursery grounds in the Eastern English Channel and in the Bay of Biscay during 3 years. Growth (size and otolith daily increment width), body condition (morphometric index) and abundance of juvenile common soles were analysed together with xenobiotic concentrations (heavy metals and organic contaminants). Condition indices displayed important variations and did not allow relevant estimation of environmental quality. On the contrary, growth and density indicators showed good steadiness above years but varied among sites. In spite of difficulties of interpreting these indicators on such a meso-scale approach, analyses highlighted the estuaries of Seine and...
Tipo: Text Palavras-chave: Flatfish juvenile; Essential fish habitat quality; Quantitative bio indicators.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2016.pdf
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Growth and condition of juvenile sole (Solea solea L.) as indicators of habitat quality in coastal and estuarine nurseries in the Bay of Biscay with a focus on sites exposed to the Erika oil spill ArchiMer
Gilliers, Camille; Le Pape, Olivier; Desaunay, Yves; Bergeron, Jean-pierre; Schreiber, Nathalie; Guerault, Daniel; Amara, Rachid.
Indicators of growth and condition were used to compare the habitat quality of nurseries of juvenile sole (Solea solea L.) in the Bay of Biscay, based on one survey in 2000. The four biological indicators are poorly correlated with each other, suggesting that no single measure may give an adequate description of fish health and of its habitat's quality. Growth indicators showed significant differences between northern and southern areas. Juveniles from the two southernmost nurseries, the Gironde estuary and the Pertuis Antioche, displayed significant lower otolith increment widths and mean sizes. These differences were inversely related to water temperature and unrelated to genetic or age differences, and are unlikely to be due to limiting trophic...
Tipo: Text Palavras-chave: Erika oil spill; RNA/DNA; Otolith daily increment width; Essential fish habitat.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-3963.pdf
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Comparaison de la qualite des zones de nourriceries cotieres du littoral francais a partir de l'etude d'indices de condition mesures sur des juveniles de soles ArchiMer
Gilliers, Camille; Amara, Rachid; Bergeron, Jean-pierre; Le Pape, Olivier; Desaunay, Yves.
Coastal and estuarine ecosystems provide nursery habitat for various marine species. Habitat quality has potential effects on growth and survival of fish juveniles. As quality can not be measured directly, we have used two kind of condition indices to assess growth and nutritional status of 0-group soles juveniles : - morphometric indices - biochemical indice Biochemical indice values show that each area provides good feeding condition. Unlikely, morphometric condition factors show differences in habitat quality between eastern Channel and Bay of Biscay. Juveniles have better condition in the eastern Channel. Condition indices didn’t enable us to find any general relationship between human effects and habitat quality.
Tipo: Text Palavras-chave: Nourriceries; Qualité; Indices de condition; Juvéniles du groupe.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00132/24364/22505.pdf
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Influence of oil exposure on the physiology and ecology of the common sole Solea solea: Experimental and field approaches ArchiMer
Claireaux, Guy; Desaunay, Yves; Akcha, Farida; Auperin, Benoît; Bocquene, Gilles; Budzinski, Hélène; Cravedi, Jean-pierre; Davoodi, Fariba; Galois, Robert; Gilliers, Camille; Goanvec, Christelle; Guerault, Daniel; Imbert, Nathalie; Mazeas, Olivier; Nonnotte, Guy; Nonnotte, Liliane; Prunet, Patrick; Sebert, Philippe; Vettier, Aurélie.
Evaluating the ecological impact of an oil spill is a complex issue requiring coherently articulated examination of the sequence of interactions that link the cell, where contaminants exert their effects, to the ecosystem, where interactions with human activities arise. This sequence of interactions traverses the frontiers between scientific disciplines (chemistry, toxicology, physiology, and fisheries ecology). Using the common sole (Solea solea L.) as a model species for the coastal habitats polluted by the "Erika" oil spill, our research project attempted to define indices of functional integrity that characterised the consequences of fuel exposure at the different biological levels. The coupling of field observations with experimental laboratory work...
Tipo: Text Palavras-chave: Physiological ecology; Common sole; Complex system approach; Oil spill.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/publication-405.pdf
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