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Registros recuperados: 225
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Croissance de juvéniles de Nereis diversicolor nourris avec des détritus d'halophytes ArchiMer
Meziane, T; Retiere, C.
The comparative effect of the uptake of fresh and degraded detritus of halophytic plants, harvested from salt marches of the Mont Saint-Michel Bay (France), on the growth of a juvenile population of the annelid polychaete N. diversicolor (L.) was studied under experimental conditions in summer 1993. Fresh and degraded detritus of Spartina anglica, Halimione portulacoides and Salicornia europeae, as well as the green algae Enteromorpha sp. were distributed separately to homogenous set of juveniles for a 75 d period. The highest growth rate was obtained for worms fed with Enteromorpha sp. Administration of fresh detritus of a given halophyte species to N. diversicolor juveniles always leads to a significantly higher growth rate than did degraded detritus....
Tipo: Text Palavras-chave: Nereis diversicolor; Croissance; Halophytes; Détritus; Nereis diversicolor; Growth; Halophytes; Detritus.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00322/43312/42962.pdf
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Croissance de la coque (Cerastoderma edule) en baie de Somme : Morphométrie et Marquage ArchiMer
Bellamy, Elise; Lefebvre, Alain; Mahe, Kelig; De Rafelis, Marc.
The bay of Somme is the first French field of cockles (Cerastoderma edule) with a production amounting to 3000 tons per year on average. In order to improve the stock management, it is necessary to increase our knowledge of this species. This study is looking at the growth of the common cockle. First, was carried out a morphometric analysis of the two left and right valves, which has revealed a perfect symmetry of the shell and has allowed us to establish strong correlations among the morphometric parameters. Then, a chemical marking study has been realized with calcein and manganese in order to obtain the exact growth. Calcein marking has showed a fluorescent stria only for an half hour immersion time at 150 mg.L-1. Likewise, the manganese marking has...
Tipo: Text Palavras-chave: Coque; Cerastoderma edule; Croissance; Baie de Somme; Marquage; Calcéine; Manganèse; Fluorescence; Cathodoluminescence; Cockle; Cerastoderma edule; Growth; Bay of Somme; Marker; Calcein; Manganese; Fluorescence; Cathodoluminescence.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00007/11815/8542.pdf
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Croissance de l'huître creuse Crassostrea gigas dans le bassin de Marennes-Oléron de 1987 à 1998 ArchiMer
Le Moine, Olivier; Geairon, Philippe.
This report aims to study the oyster Crassostrea gigas growth and production over a 12 years time's span in the Bay of Marennes Oleron. Results of 12 years of oyster growth did not show any significant oyster biological productivity decrease, nor trend. In contrast, annual growth showed a large variability, which will be correlated with environmental conditions. Moreover, annual growth variability was greater than the variability due to site location, but the Ronce experimental site. The later, located in the south west part of the Bay of Marennes Oleron, has been the leading oyster growth site since 1989. The annual shell growth variability was greater than oyster dry meat weight fluctuation. Both 1990 and 1991 years were characterized by the largest...
Tipo: Text Palavras-chave: Marennes Oleron bay; Crassostrea gigas; Monitoring network; Oyster growth and production; Marennes Oléron; Crassostrea gigas; Réseau de surveillance; Production; Croissance.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/rapport-1588.pdf
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Croissance des huîtres creuses, Crassostrea gigas, en baie du mont Saint-Michel, avant la restructuration de 2004 ArchiMer
Bouget, Jean-francois; Mazurie, Joseph.
This study presents the main results of oyster growth obtained experimentally in 2002 and 2003, in the farming area of Cancale before the leases reorganization of 2004. According to the REMORA monitoring network from 1990 to 2004, the oyster growth in Cancale bay may be characterized by an average annual weight gain (around 30g per year), a rather weak meat content compared to other regional oyster sites, and an exceptional quality of shell (absence of blisters, few Poly do rd). Spatially, the oyster farming area of Cancale shows rather homogeneous performances of breeding, in spite of the muddy southern area. In addition an experimental trial in 2003 allowed to evaluate favourably the potential of the new oyster area of Saint-Benoît : in these...
Tipo: Text Palavras-chave: Mont Saint Michel; Crassostrea gigas; Growth; Breeding; Oyster; Mont Saint Michel; Crassostrea gigas; Croissance; Ostréiculture; Huître.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/rapport-1637.pdf
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Croissance des huîtres plates en claire et conditions hydrologiques ArchiMer
Trochon, Pierre.
S
Tipo: Text Palavras-chave: Huîtres; Ostrea edulis; Croissance; Claires ostréicole; Seudre; Marennes Oléron.
Ano: 1960 URL: http://archimer.ifremer.fr/doc/00004/11497/8067.pdf
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Croissance des moules de bouchots dans la baie de l'Aiguillon (premières observations) ArchiMer
Dardignac, Marie-jose; Feuillet, Michelle.
Le tiers environ des bouchots concédés en France se trouve situé entre La Tranche/Mer en Vendée et Marsilly en Charente Maritime (Fig. 1). On peut distinguer, de part et d'autre de la Sèvre Niortaise, deux secteurs qui diffèrent par la nature de leur sol et, à marée montante, par l'origine des eaux de flot. Au sud de la Sèvre, la sédimentation résulte d'apports en provenance de l'Ile de Ré mais seuls les sables fins et les vases arrivent sur le littoral d'Esnandes-Marsilly où ils se déposent (LORIN, 1970). Au flot, ce secteur reçoit les eaux du Pertuis d'Antioche qui pénètrent par le courreau de la Pallice. Au nord de la rivière, en revanche, la côte vendéenne est constituée de sables moyens et grossiers ; ceux-ci se déplacent le long du littoral et...
Tipo: Text Palavras-chave: France; Baie Aiguillon; Croissance; Bouchot; Moules; Mytiliculture.
Ano: 1974 URL: http://archimer.ifremer.fr/doc/1974/acte-6859.pdf
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Croissance, engraissement et mortalité de l'huître creuse Crassostrea gigas en baie de Bourgneuf : comparaison de quatre secteurs ostréicoles ArchiMer
Haure, Joel; Baud, Jean-pierre.
A study on mortalities, growth and fattening of the oyster Crassostrea gigas was carried out spring with the autumn 1987 in four sites of bay of Bourgneuf. Mortalities, more important in spring, prove to be higher in the sectors North compared to the Southern sectors of bay of Bourgneuf. The performances of growth are rather weak when they are compared with other French oyster sectors. They however present a better production in the cattle-breeding areas located at the South of bay. The spring phase is marked by the formation of glucidic reserves, at the moment of the reheating of water, which is quickly transformed, in the majority of the sites, in lipids of reserves of the ovocytes, during the gamétogenèse. The state of fattening of Crassostrea gigas...
Tipo: Text Palavras-chave: Fattening; Oyster; Mortality; Growth; Bay of Bourgneuf; Crassostrea gigas; Engraissement; Huitre; Mortalité; Croissance; Baie de Bourgneuf; Crassostrea gigas.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/rapport-1646.pdf
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Croissance et indice de condition de l'huître plate Ostrea edulis élevée en mer et en étang sur la côte méditerranéenne ArchiMer
Paquotte, Philippe; Moriceau, Jacques.
A monitoring of the growth and condition index of the flat oyster Ostrea edulis has been conducted in the Thau Lagoon and in open sea off the Cap d'Agde. Between April and November, its growth is greater in open sea than in the lagoon. In winter, the growth doesn't stop in open sea, but one needs to get away from mussel collection in practicing seabed farming. In these conditions, the oyster's growth, throughout the year, is very close in open sea and in lagoons whereas the condition index is higher in open sea.
Tipo: Text Palavras-chave: Méditerranée; Mer ouverte; Etang de Thau; Indice de condition; Croissance; Ostrea edulis.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/1986/acte-6188.PDF
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Croissance et mortalite du petoncle noir Chlamys varia dans le bassin d'Arcachon, France ArchiMer
Trut, Gilles; Robert, Rene; Laborde, Jean-louis.
Until 1960, the Black scallop Chlamys varia was relatively abundant along the French Atlantic coasts. Today most of these natural beds have disappeared. Because mollusc hatchery and nursery techniques have been mastered, the reintroduction of this species, under control, was carried out in several areas and particularly in the bay of Arcachon, from 1989 to 1992. Good results were obtained in hatchery and nursery but the development of the juveniles in the natural fields was poor. The growth of Chlamys varia was satisfactory but heavy mortalities were rapidly recorded which could not be related to the hydrobiological conditions. This species seems to be very sensitive to short emersion and removal operations which are incompatible with aquaculture processes.
Tipo: Text Palavras-chave: Bassin d'Arcachon; Mortalité; Croissance; Chlamys varia; Mollusque; Bay of Arcachon; Mortality; Growth; Chlamys varia; Mollusc.
Ano: 1994 URL: https://archimer.ifremer.fr/doc/1994/rapport-1567.pdf
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Croissance et qualité de l'huître ceuse Crassostrea gigas dans le bassin de Thau (Hérault) : Résultats d'une étude réalisée en 1990-1991 ArchiMer
Pichot, Paul; Landrein, Sonia; Juge, Claude.
During years 1990-1991, a study was carried ouI in order to precise the relationship between sorne physiological features and the biochemical characteristics of dry flesh and hemolymf of oyster Crassostrea gigas, cultivated in the mediterranean lagoon of Thau. Growth rates and biochemical analysis for proteins, lipids and carbohydrates were estimated. The results of this study are given. They include many other data from a study on trophic relationships developed between 1985-1989.
Tipo: Text Palavras-chave: Méditerranée; Etang de Thau; Crassostrea gigas; Croissance; Composition biochimique; Protides; Lipides; Glucides; Mediterranean; Lagoon of Thau; Crassostrea gigas; Growth; Biochemical composition; Proteins; Lipids; Carbohydrates.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00419/53031/53966.pdf
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Croissance et qualité de l'huître Crassostrea gigas Thunberg en élevage dans le bassin de Marennes-Oléron ArchiMer
Deslous-paoli, Jean-marc.
In 1979-1980, the main growth o oysters Crassostrea gigas, in the basin of Marennes-Oleron occured in June and July. The available amount of food and the energetic requirements for the reproduction are important factors determining growth. Tissue weight decreased after spawning until the end of the winter, and this decrease might be related to the high quantities of inorganic particles, in the seston, at that period of the year.
Tipo: Text Palavras-chave: Marennes Oleron; Seston; Growth; Crassostrea gigas; Oysters; Marennes Oléron; Seston minéral; Croissance; Crassostrea gigas; Huîtres.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-2947.pdf
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Croissance et reproduction de Ruditapes philippinarum (Adams & Reeve 1850) en fonction des conditions d'élevage (milieu lagunaire et claire) ArchiMer
Goulletquer, Philippe.
For a few years, we have witnessed the rapid development of Japanese clam Ruditapes philippinarum (Adams & Reeve) culture on the Atlantic coast, and especially in the Charente Maritime region. However, a number of unknown variables still exist in order to optimize oyster farms and improve their benefits. In this respect, studies have been carried out since 1975 by the Centre Océanologique de Bretagne in Tudy Island, in the Kermoor pond, in order to determine: the consequence of the immersion size on their growth, the optimal seeding period, and the survival rate. Moreover, other studies aimed to significantly reduce the production cost, focused on pre-growth length. These studies correspond to a specific environment (i.e. the semi-closed Kermoor pond)....
Tipo: Text Palavras-chave: Maturation sexuelle; Cycle gamétogénétique; Biométrie; Croissance; Ruditapes philippinarum; Palourdes.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/rapport-3843.PDF
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Croissance et spectre de taille de trois algues en cultures non renouvelées, utilisées pour la nutrition de larves de bivalves en écloserie ArchiMer
Robert, Rene; His, Edouard.
The different growth stages of three marine unicellular algae used in aquaculture, Isochrysis galbana, Chaetoceros calcitrans forma pumilum and tetraselmis suecica have been studied for 50 days under controlled culture conditions using a particle meter. At the same time, the size spectrum of the cells has been determined using a C 1000 scanner. The exponential growth stage is 11 days in the first two species, and 13 in the last one. Chaetoceros calcitrans forma pumilum is the smallest with an average size of 3.5 µm. Its cellular volume is constant. The average size of Isochrysis galbana is 4.5 µm. An increase of the cellular volume is observed through its stationary stage. The modal size of Tetraselmis suecica is 8 µm. Again, an increase in the cellular...
Tipo: Text Palavras-chave: Spectre de taille; Croissance; Tetraselmis suecica; Chaetoceros calcitrans forma pumilum; Isochrysis galbana; Algues unicellulaires.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/1986/acte-6187.PDF
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Croissance relative, sex-ratio et exploitation de la crevette blanche metapenaeus monoceros (fabricius, 1798) du golfe de gabes (tunisie) OceanDocs
Jarboui, O.; Ben Abdallah, O.; Missaoui, H.; Ben Hadj Hamida, N..
Les crevettes, particulièrement Penaeus kerathurus, sont considérées parmi les espèces de crustacés les plus exploitées au niveau des côtes tunisiennes, essentiellement dans le golfe de Gabès. Depuis l’année 1993, une nouvelle espèce de crevette d’origine lesseptienne est apparue dans le golfe et s’est bien adaptée avec ses conditions climatiques et environnementales : c’est la crevette blanche Metapenaeus monoceros. L’objectif principal de cette étude consiste à suivre l’exploitation de cette espèce dans la région du golfe de Gabès, à étudier sa croissance relative et à déterminer la composition des captures selon le sexe. D’après les résultats obtenus nous avons pu constater que, durant la dernière décennie, la production de cette espèce dans le golfe de...
Tipo: Journal Contribution Palavras-chave: Crevettes; Espèces exotiques; Exploitation; Croissance; Shrimps MED; Tunisia; Gabes Gulf Metapenaeus monoceros Growth Introduced species Marine crustaceans Sex ratio Growth Sex ratio http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_7014.
Ano: 2003 URL: http://hdl.handle.net/1834/1076
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Culture d'huîtres creuses en eaux profondes dans le Pertuis d'Antioche - Comparaisons avec le site témoin de Fouras - Rapport préliminaire pour la période juillet 2000 - février 2001 ArchiMer
Robert, Stephane; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Guilpain, Patrice; Soletchnik, Patrick; Faury, Nicole; Seugnet, Jean-luc; Arnaud, Christophe; Chollet, Bruno; Chabirand, Jean-michel; Fleury, Pierre-gildas; Bouget, Jean-francois; Goulletquer, Philippe.
Il est important de rappeler ici les informations concernant le Projet "Culture d'huîtres creuses en eaux profondes dans le Pertuis d'Antioche" (Goulletquer, 2000). Le Bassin de Marennes-Oléron, et globalement la Charente-Maritime, sont marqués depuis les années 80 (Héral, 1985), par un net recul des rendements de production qui engendrent une diminution de la rentabilité économique et un accroissement des coûts de production. La démonstration de la surcharge biologique du Bassin de Marennes-Oléron est démontrée depuis 1985. Cette situation a évolué depuis cette date, par une diminution des cheptels en élevage et par une augmentation des cheptels sauvages ce qui a abouti à des plans d'entretien et de restructuration du DPM. Cependant, la situation...
Tipo: Text Palavras-chave: Ostréiculture; Eaux profondes; Crassostrea gigas; Technique élevage; Croissance; Mortalité; Pertuis Antioche.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/00072/18370/15942.pdf
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Culture d'huîtres creuses en eaux profondes dans le Pertuis d'Antioche. Comparaisons avec les cultures sur estran du bassin de Marennes Oléron et de Fouras et les filières d'élevage des Saumonards. Période avril 2001 - février 2002 ArchiMer
Robert, Stephane; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Guilpain, Patrice; Soletchnik, Patrick; Faury, Nicole; Seugnet, Jean-luc; Arnaud, Christophe; Chollet, Bruno; Chabirand, Jean-michel; Fleury, Pierre-gildas; Langlade, Aime; Goulletquer, Philippe; Mille, Dominique.
Le Bassin ostréicole de Marennes-Oléron, et globalement la Charente-Maritime, sont marqués depuis les années 80 (Héral, 1986), par un net recul des rendements de production qui engendrent une diminution de la rentabilité économique et un accroissement des coûts de production. La démonstration de la surcharge biologique du Bassin de Marennes-Oléron est faite depuis 1985. Cette situation a évolué depuis cette date, par une diminution des cheptels en élevage et par une augmentation des cheptels sauvages ce qui a abouti à des plans d'entretien et de restructuration du DPM. Cependant, la situation défavorable pour la majorité des zones charentaises en terme de croissance-production est annuellement confirmée, depuis 1993 au moyen des réseaux de croissance...
Tipo: Text Palavras-chave: Ostréiculture; Eaux profondes; Crassostrea gigas; Technique élevage; Croissance; Mortalité; Biométrie; Biochimie; Marennes Oléron.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/00072/18369/15940.pdf
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Déclin de la taille-aux-âges des sardines (Sardina pilchardus) : diminution de la croissance et/ou disparition sélective des individus à croissance rapide ArchiMer
Gentil, Claire.
In many exploited species, we see a decrease of size-at-ages. Two main hypotheses have been proposed to explain this decline: a decline in growth and the selective mortality of the individuals with fast growth both being due to environmental changes or/and to fishing. The sardine Sardina pilchardus of the Bay of Biscay is a good model for the study of this phenomenon because of its high sensitivity to the environmental variations and it sustains two large French and Spanish fisheries. The aim of this study is to measure the changes in the growth of sardines, by the reading of otoliths, and to understand mechanisms involved in this process. The main stages of this study are described in this report: extraction of otoliths during PELGAS, otoliths...
Tipo: Text Palavras-chave: Sardina pilchardus; Golfe de Gascogne; Otolithes; Croissance; Mortalité; Sélection; Sardina pilchardus; Bay of Biscay; Otoliths; Growth; Mortality; Selection.
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00459/57038/58942.pdf
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Déclin du rendement sur les concessions ostréicoles de la zone NE du bassin d'Arcachon ArchiMer
Le Dantec, Jean.
Depuis une dizaine d'années le rendement décline sur les parcs à fond d'argile voisins du littoral entre Arès et Biganos. Les chiffres relevés sur le livre de compte d'un ostréiculteur d'Andernos illustrent ce phénomène.
Tipo: Text Palavras-chave: Ostréiculture; Huître; Déclin; Croissance; Arcachon; Gironde.
Ano: 1959 URL: http://archimer.ifremer.fr/doc/00004/11494/8060.pdf
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Description mathématique de la croissance de Lesueurigobius friesii (Teleostei, Gobiidae). Essai de synthèse ArchiMer
Gros, Philippe.
A population of the burrowing goby Lesueurigobius friesii was studied from 1974 to 1979, at a sampling station located on a Nephrops ground in the northem Bay of Biscay, off the south coast ofBrittany; samples were collected close to a muddy bottom, at depths ranging from 80 to 100 m. Data on demographie structures were obtained by two independent exercises: examination of oto1iths and the analysis of length-frequency distributions. The fish attains a standard length of at !east 71 mm and an age of 6 years. Most growth takes place during the first three years of !ife, and proceeds very slowly thereafter. The state of gonad development was assessed qualitatively by visual inspection of the body cavity of females; spawning occurs in spring, and by July 61 of...
Tipo: Text Palavras-chave: Croissance; Modèle de Von Bertalanffy; Comparaison de courbes de croissance; Téléostéens; Golfe de Gascogne; Growth; Von Bertalanffy's model; Comparison of growth curves; Teleostei; Bay of Biscay.
Ano: 1980 URL: http://archimer.ifremer.fr/doc/00122/23302/21129.pdf
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Détermination de l'âge des chinchards (Trachurus trachurus et Trachurus trecae) de la ZEE mauritanienne par otolithométrie. OceanDocs
Mylnikov, N.; Ba, I.S..
Résumé : Cette étude traite de la détermination de l’âge des chinchards Trachurus trachurus et Trachurus trecae pêchés dans la ZEE mauritanienne de juin 1987 à décembre 1988. La méthode utilisée est celle dite de lecture directe des otolithes selon l’hypothèse : « une marque = une année ». Les paramètres de croissance estimés sont dans la plupart des cas voisins de ceux déjà obtenus sur ces deux espèces dans la région, mais restent cependant tributaires de la période et de la périodicité de formation des marques. Abstract : This work studies the age determination of horse-mackerels Trachurus trachurus and Trachurus trecae fished in Mauritanian waters from June 1987 to December 1988, using the direct reading of otoliths with the hypothesis: « One mark = one...
Tipo: Journal Contribution Palavras-chave: Otoliths; Mauritania; Trachurus trecae; Growth; Mauritanie; Horse-mackerels; Otolithes; Chinchards; Trachurus trachurus; Croissance; Horse mackerel fisheries.
Ano: 1990 URL: http://hdl.handle.net/1834/784
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