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Registros recuperados: 7
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Etude de la production de juvéniles de saumon atlantique (Salmo salar) - 1 - Résultats de la saison 1979-1980 Pisciculture du Quinquis ArchiMer
Gaignon, Jean-louis; Prouzet, Patrick.
La pisciculture du Quinquis, sise près de Landivisiau (29), a pour objet la production intensive de smolts de saumon atlantique (Salmo salar) dans le cadre d'un programme d'aménagement et de repeuplement de la rivière Elorn. Depuis sa mise en eau (1976) les résultats ont été décevants et ceci à cause, d'une part de difficultés de démarrage (problèmes alimentaires en autres), d'autre part de problèmes sanitaires : la furonculose ayant entrainé des mortalités importantes dès le 1er automne (alevins à bonne croissance) ou en fin d'hiver. Au total, la survie a toujours été très faible et la production de smolts négligeable. C'est pourquoi, à partir de la saison 79-80, les objectifs ont été tournés davantage vers l'expérimentation tout en conservant un objectif...
Tipo: Text Palavras-chave: Saumon atlantique; Salmo salar; Elevage; Juvénile; Paramètres élevage; Données économiques; Pisciculture.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00083/19420/17031.pdf
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Etude des nourriceries de la Baie de Seine orientale et de l'estuaire de la Seine ArchiMer
Morin, Jocelyne; Riou, Philippe; Bessineton, Christophe; Vedieu, Christophe; Lemoine, Michel; Simon, Serge; Le Pape, Olivier.
This study, carried out from 1995 to 1997, within the framework of "Le Havre" harbour extension project, concerned halieutic populations and the characterization of a coastal nursery in the oriental part of the Seine bay and the Seine estuary . The main objective was to describe the specific and demographic composition of marine populations and their spatio-temporal distribution, and so assess the biological and halieutic role of this area. This study also included a research about the dietary needs of fish juveniles living in the estuary. Autumn and winter surveys results show that the estuary and area under direct influence are the richest from a biological and halieutic point of view. The mouth estuary isthe richest area in terms of diversity of...
Tipo: Text Palavras-chave: Bay of Seine; Estuary; Food; Trophic; Juvenile; Nursery; Baie de Seine; Estuaire; Alimentation; Trophique; Juvénile; Nourricerie.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/rapport-1507.pdf
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Evaluation des ressources halieutiques par les campagnes scientifiques françaises - Façade "Manche est" et façade "Loire-Gironde" ArchiMer
Delpech, Jean-paul; Mahe, Kelig; Mehault, Sonia; Rostiaux, Emilie; Biais, Gerard; Coppin, Franck; Vaz, Sandrine.
This report is a result of a contract between Ifremer and the French Ministry of Industry. The aim was to map the distribution of the fisheries resources from french scientific surveys. Two areas have been selected: - the "Eastern Channel" area, including 7 administrative departments : Nord, Pas-de-Calais, Somme, Seine-Maritime, Eure, Calvados and Manche. - the "Loire-Gironde" area, including 4 administrative departments : Loire-Atlantique, Vendée, Charente-Maritime and Gironde.
Tipo: Text Palavras-chave: Bay of Biscay; Eastern Channel; Juvenile; Adult; Abundance index; Specific richness; Mapping; Fisheries; Scientific survey; Golfe de Gascogne; Manche est; Juvénile; Adulte; Indice d'abondance; Richesse spécifique; Cartographie; Campagne halieutique.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/rapport-6642.pdf
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Metamorphosis and estuarine colonisation in the common sole, Solea solea (L.): implications for recruitment regulation ArchiMer
Amara, Rachid; Lagardere, Francoise; Desaunay, Yves; Marchand, Jocelyne.
Processes involved in both metamorphosis and settlement of young sole were studied at the population, cohort and individual level in order to evaluate their role in survival and recruitment regulation. Metamorphosis can be defined as a phase of variable duration (10 days on average) at the end of which the larval period of pelagic dissemination is completed. Size at the onset of metamorphosis is considerably less variable than age and is less plastic to environmental change. Metamorphosis is triggered by the acquisition of a competent size and a sufficient store of energy supplies, and occurs without a nutritional crisis or growth arrest. In addition, changes in organogenesis and behaviour that occur during metamorphosis seem to contribute to horizontal...
Tipo: Text Palavras-chave: Estuarine colonisation; Critical phase; Juvenile; Larva; Solea solea; Colonisation estuarienne; Phase critique; Juvénile; Larve; Solea solea.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-536.pdf
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Otoliths imprinting of sole (Solea solea) from the Bay of Biscay: a tool to discriminate individuals from nursery origins? ArchiMer
De Pontual, Helene; Lagardere, Francoise; Troadec, Herve; Batel, Alain; Desaunay, Yves; Koutsikopoulos, Constantin.
Sole nurseries are located in the main bays and estuaries of the Bay of Biscay, where juveniles from the same stock. concentrate and constitute temporarily isolated groups. This context being favourable for elemental analyses of juvenile otoliths this study has been initiated with the aim of obtaining environmental imprints of the main nurseries of origin of juveniles recruiting to the adult stock, and of evaluating the relative contribution of these nurseries to the stock. The objectives were to compare (i) the otolith elemental imprints obtained by sampling juveniles in the Loire and the Gironde nurseries, and (ii) two multi-element analysis techniques: laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) and solution-based ICPMS...
Tipo: Text Palavras-chave: Recruitment; Juvenile; Estuarine nursery; ICPMS; Trace elements; Otolith; Recrutement; Juvénile; Nourricerie estuarienne; ICPMS; Eléments traces; Otolithe.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-537.pdf
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Programme de repeuplement - "Sea Rancing" en Salmonidés migrateurs - Production de juvéniles saison 80-81 ArchiMer
Gaignon, Jean-louis; Prouzet, Patrick.
Ce document a pour but de fournir l' ensemble des résultats et des observations recueillis au cours d 'une saison dans le cadre de programmes CNEXO . En effet, si certaines données sont obtenues grâce à des expériences originales et dans ce cas font ou feront l'objet de publications, d'autres constituent de simples notes ou essais qui peuvent représenter globalement une expérience susceptible de pouvoir aider à l'amélioration de techniques de production nécessaires au développement de l'activité Aquaculture - Repeuplement. Il a en outre la particularité de fournir des données sur des sujets dont l 'homogénéité n'apparaît peut - être pas évidente au lecteur élevage intensif de juvéniles. repeuplement, "Sea Ranching", gestion des stocks. Pourtant il n' y a...
Tipo: Text Palavras-chave: Aquaculture; Salmo salar; Saumon atlantique; Production; Juvénile; Repeuplement; Gestion de stocks.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00078/18902/16488.pdf
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Relations biométriques chez l'araignée de mer Maja squinado : longueur de référence, distinction juvénile-adulte, taille-poids. ArchiMer
Le Foll, Didier; Latrouite, Daniel; Noel, Philippe.
For the analysis of spider crab populations it is necessary to split the size composition by sex and between age groups, and to convert length to weight. In some cases different length measurements need to be correlated in order to compare the results from different authors. Morphometricaly it is easy to use the abdominal flap to distinguish between male and female, and between immature and adult females, but for immature and adult males it is necessary to use Somertons method to analyse the relation between carapace length and claw width. The relation between carapace length and weight is normally established at moult stage 4, and it obtained separately for males, females, immature and adults spider crabs. When measuring carapace length the present length...
Tipo: Text Palavras-chave: Adult; Biometry; Western Channel; Juvenile; Biology; Maja brachydactyla; Spider crab; Adulte; Juvénile; Manche; Maja brachydactyla; Biométrie; Araignée.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-1410.pdf
Registros recuperados: 7
Primeira ... 1 ... Última
 

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