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	Provedor de dados ArchiMer (3) Autor Denis, Jeremy (3) Courcot, Lucie (2) Loots, Christophe (2) Marchal, Paul (2) Vallet, Carole (2) Antajan, Elvire (1) Caboche, Josselin (1) Lefebvre, Valerie (1) Vincent, Dorothée (1) Mais... Palavra-chave Feeding strategy (2) Condition larvaire (1) Critical period (1) Croissance (1) Diet (1) Downs herring (1) Downs herring larvae (1) English Channel-North Sea. (1) Growth (1) Gut content (1) Hareng des Downs (1) Larval condition (1) Manche-mer du Nord. (1) Nutrition (1) Période critique (1) Scanning electronic microscopy (1) Selectivity index (1) Mais... Tipo do documento Text (3) Ano 2016 (2) 2014 (1) País France (3) Idioma Inglês (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Changements ontogéniques de la condition larvaire chez une espèce de poisson à reproduction hivernale, le hareng des Downs ArchiMer Denis, Jeremy. The larval condition of Downs herring during the critical period was investigated between 2008 and 2015 in the eastern English Channel and Southern Bight of North Sea from data collected during the International Bottom Trawl Survey (IBTS). First, the study of the feeding strategy from gut contents analysis using two complementary approaches (electronical microscopy and measure of fluorescence) revealed a shift in the feeding diet occurring at a larval size of 13 mm. Smaller larvae had an omnivorous and a more diversified diet composed of numerous protist and small zooplanktonic preys whereas bigger larvae had a less diversified diet composed mainly of bigger zooplanktonic prey. Along with the diet shift, combination of four condition indices (ingestion... Tipo: Text Palavras-chave: Hareng des Downs; Condition larvaire; Nutrition; Croissance; Période critique; Manche-mer du Nord.; Downs herring; Larval condition; Feeding strategy; Growth; Critical period; English Channel-North Sea.. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00386/49701/50227.pdf Feeding strategy of Downs herring larvae in the English Channel and North Sea ArchiMer Denis, Jeremy; Vallet, Carole; Vincent, Dorothée; Courcot, Lucie; Marchal, Paul; Loots, Christophe. The aim of this study was to characterize the feeding strategy of Downs herring larvae at "critical period" during winter in the English Channel and North Sea was defined to assess whether nutrition is responsible for low recruitment in stocks over the past years. Data collected during the French part of the International Bottom Trawl Survey from 2008 to 2014 were used to analyse fish larvae diet by direct observation using Scanning Electron Microscope (SEM). Gut content methods generally used for copepods was adapted to fish larvae to assess phytoplankton ingestion. The relative importance of small preys (0,5-375µm) observed in gut contents proved the essential role of SEM to better acknowledge Downs herring diet. We demonstrated that Downs herring larvae... Tipo: Text Ano: 2014 URL: http://archimer.ifremer.fr/doc/00255/36608/35174.pdf Feeding strategy of Downs herring larvae (Clupea harengus L.) in the English Channel and North Sea ArchiMer Denis, Jeremy; Vallet, Carole; Courcot, Lucie; Lefebvre, Valerie; Caboche, Josselin; Antajan, Elvire; Marchal, Paul; Loots, Christophe. This study aims to characterize the larval feeding strategy of the Downs sub-population of North Sea herring (Clupea harengus L.). Diet composition, vacuity rate and prey selectivity of larvae from 8 to 15 mm collected during the International Bottom Trawl Survey (IBTS) - MIK sampling from 2008 to 2013 were assessed by direct observation of their gut contents using Scanning Electron Microscopy (SEM). The high contribution of protists and small zooplanktonic prey observed in the gut contents proved the relevance of SEM to study the diet of first feeding larvae. The relatively low vacuity rate of 45% suggests that food may not be a limiting factor for Downs herring larvae in winter. These larvae appeared to be omnivorous and there was a clear shift in term... Tipo: Text Palavras-chave: Diet; Feeding strategy; Selectivity index; Scanning electronic microscopy; Downs herring larvae; Gut content. Ano: 2016 URL: http://archimer.ifremer.fr/doc/00345/45606/45226.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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