Consulta: subjectFacets:"Bay of Arcachon"
Registros recuperados: 11
Data/hora: 04/06/2024 16:26:06

Contamination du milieu marin par les micropolluants (résultats du RNO de 1979 à 1994). 2 : Le Bassin d'Arcachon
Provedor de dados: 5
Autores: Cantin, Christian.
After a quick presentation of the observation national network of the marine environment quality (RNO), the different metallic and organic Micropollutants measured in four stations of the Bay of Arcachon are described (origin, eventual toxicity). The results of the contamination measurements in the living tissue (oysters) are presented on graphics, based on a sample every three months from 1979 ta 1994, and means are compared to those obtained during the same period on the others points of the Manche-Atlantique coast.  
Tipo: Text
Palavras-chave: Micropolluants; Bassin d'Arcachon; Huîtres; Micropollutants; Bay of Arcachon; Oysters.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00422/53309/54147.pdf

Manila clam Tapes philippinarum culture: Sediment-clam interactions
Provedor de dados: 5
Autores: Goulletquer, Philippe; Robert, Rene; Trut, Gilles.
Manila clam (Tapes philippinarum) culture and sediment interactions were tested by comparing two rearing areas, including an oceanic ('Le-Ferret') and a more estuarine ('Les-Jacquets') sites in the bay of Arcachon (France). The growth of a calibrated clam population (10-mm spat) was monitored in these two areas with a concomitant sediment-water interface survey over a 1.5-year period. Two sites per area, including control and rearing plots, were sampled on a monthly basis. The potential clam farming impacts by bioturbation and interactions were examined at three sediment depths: 0-1, 1-2 and 2-10 cm. Moreover, the main hydrobiological parameters were measured on a weekly basis to establish a relationship between these parameters and sediment-water...
Tipo: Text
Palavras-chave: Bay of Arcachon; Tapes philippinarum; Sediment water interface; Bioturbation; Clam culture; Bassin d'Arcachon; Tapes philippinarum; Interface eau sédiment; Bioturbation; Vénériculture.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/publication-864.pdf

Growth and mortality of the European oyster Ostrea edulis in the Bay of Arcachon (France)
Provedor de dados: 5
Autores: Robert, René; Borel, Michel; Pichot, Yves; Trut, Gilles.
A study of the growth and mortality of the European oyster Ostrea edulis , including the effects of Marteilia refringens and Bonamia ostreae , was carried out in three oceanic areas in the Bay of Arcachon from May 1989 to February 1991. One-year-old spat, free from disease were used for the trials. Six months after beginning the trials, Marteilia refringens had severely infested the cultures. Although Bonamia ostreae was found during the first year, the rate of infestation was low. In the second year bonamiasis increased and high mortality (&gt; 60%) occurred in Ostrea edulis populations. Although the growth of the oysters was good, their condition index was generally poor. Moreover, shell perforations by Polydora sp. were observed. The influence of...
Tipo: Text
Palavras-chave: Ostrea edulis; Pathologie; Mortalité; Croissance; Reproduction; Composition biochimique; Bassin Arcachon; Ostrea edulis; Pathology; Mortality; Growth; Reproduction; Gross biochemical composition; Bay of Arcachon.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00015/12600/9477.pdf

Caractéristiques des mortalités estivales de l'huître Crassostrea gigas dans le bassin d'Arcachon
Provedor de dados: 5
Autores: Maurer, Daniele; Comps, Michel; His, Edouard.
Summer mortalities in the Pacific oyster in the Bay of Arcachon were analysed during four years (1981 to 1984). Mortalities occur mostly among one year old oyster and affect the whole bay, with different prevalence. The phenomenon occurs at certain times during the summer spawning period and is associated with high temperatures. A thinning of the digestive tubule epithelium is observed, but there is no evidence of infectious disease. The failure to find a causative agent, pollution or pathogen, tends to strengthen a physiological disorder hypothesis, related to environmental conditions. The influence of external (temperature, available food) and internai factors (length, maturation, spawning) on this phenomenon is discussed. A comparaison is drawn with...
Tipo: Text
Palavras-chave: Bay of Arcachon; Summer mortalities; Crassostrea gigas; Bassin d'Arcachon; Mortalités estivales; Crassostrea gigas.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/publication-4318.pdf

Résultats du réseau microbiologique du bassin d'Arcachon de 1989 à 1995
Provedor de dados: 5
Autores: Cantin, Christian.
Après avoir rapidement présenté le Bassin d'Arcachon et son environnement (situation géographique et réseau hydrologique), et rappelé quelques données sur l'ostréiculture, le tourisme et le réseau d'assainissement, le réseau de surveillance microbiologique (REMI) est décrit depuis sa mise en place en 1989 (réseau principal) jusqu'à son évolution en 1995 avec la mise en oeuvre d'un réseau étendu. Les résultats des analyses effectuées mensuellement sur les huîtres, au cours de ces sept années, sont présentés pour chaque station sous forme graphique, répartis en quatre secteurs  géographiques. lls ont été interprétés pour chaque réseau en fonction des quatre zones de salubrité définis par l'arrêté relatif aux classements des zones de production, et, ensuite...
Tipo: Text
Palavras-chave: Bactériologie; Huîtres; Bassin d'Arcachon; Bacteriology; Oysters; Bay of Arcachon.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00427/53819/54808.pdf

Growth, fatness and gross biochemical  composition of the japanese oyster Crassostrea gigas in stanway cylinders in the bay of Arcachon, France
Provedor de dados: 5
Autores: Robert, Rene; Trut, Gilles; Borel, Michel; Maurer, Daniele.
The Stanway cylinder was tested in the bay of Arcachon from September 1989 to August 1991. Trials were mainly performed on the Japanese oyster Crassostrea gigas in a wind-exposed area. The seed, spat, 18 month old oysters development and fattening of 2 year old oysters were studied. Compared to plastic bags the Stanway cylinder has high positive effects on survival and growth of Crassostrea gigas seed. It also has positive effects on commercial sized Crassostrea gigas fattening. Nevertheless, the cylinder has negative effects on the growth of Crassostrea gigas spat and 18 month old oysters, except for width. However, oyster quality is greatly improve : higher condition index, higher carbohydrate contents and higher shell densities were recorded. Because...
Tipo: Text
Palavras-chave: Bay of Arcachon; Culture methods; Growth; Crassostrea gigas; Bassin d'Arcachon; Technique d'élevage; Croissance; Crassostrea gigas.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/rapport-1644.pdf

Approche des relations entre  a croissance de l'huître Crassostrea  gigas et le milieu dans le bassin d'Arcachon
Provedor de dados: 5
Autores: Maurer, Daniele.
study of the experimental growth of the oyster Crassostrea gigas was undertaken of 1985 to 1988, parallel to a follow-up hydrobiologic of the medium, in three sites of the basin of Arcachon. - The characteristics of growth of the studied sites proved very stable during various years ; they are also very different from one site to another, the performances being able to vary the simple one with the double of the center of the basin towards the exit on the ocean. It is during the summer and of the autumn that the difference is established between the sectors, the spring growths being similar. The hierarchy observed is associated a more or less great precocity of the laying. - A gradient influences continental oceanic-influence is observed, resulting in more...
Tipo: Text
Palavras-chave: Ostreiculture; Oyster; Hydrobiology; Growth; Bay of Arcachon; Crassostrea gigas; Ostréiculture; Huître; Hydrobiologie; Croissance; Baie d'Arcachon; Crassostrea gigas.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/rapport-1645.pdf

Croissance et mortalite du petoncle noir Chlamys varia dans le bassin d'Arcachon, France
Provedor de dados: 5
Autores: 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

Contamination par le tributylétain (TBT) du Bassin d'Arcachon évaluée à l'aide d'un indicateur biologique : l'imposex chez Ocenebra erinacea. Résultats préliminaires
Provedor de dados: 5
Autores: Fernandez-castro, Nora; His, Edouard; Cantin, Christian.
The Bay of Arcachon has been particularly affected by the impact of organotin-based antifouling paints (His, 1996). Boring gastropods, Ocenebra erinacea, have completely disappeared from the Bay, because of the castration induced by these compounds, from 1980 to 1990. There have been no studies on imposex effects in the Bay of Arcachon since the investigations of Poli (1972) who first described the phenomenon, and of Féral (1982) who attributed it to TBT. Recently, Sarradin &amp; al. (1991) demonstrated the persistence of TBT and its degradation products in the sediments of the Bay, the latter being a potential source of pollution; Stroben &amp; al. ( 1995) have conceived a contamination scale based on the VDSI (Vas Deferens Sequence Index) in prosobranch...
Tipo: Text
Palavras-chave: Bassin d'Arcachon; Imposex; Ocenebra erinacea; TBT; Bay of Arcachon; Imposex; Ocenebra erinacea; TBT.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/00038/14898/12224.pdf

Croissance, engraissement et cycle sexuel de Crassostrea gigas dans le Bassin d'Arachon: comparaison des huîtres agées de 1 et 2 ans
Provedor de dados: 5
Autores: Maurer, Daniele; Borel, Michel.
Two-year-old oysters have a physiology which is reproduction-oriented, their maturation occurring synchronously among oysters from the same batch. The importance of the spring accumulation of glycogenated stocks varies through the years and correlates with the growth stage. Glucidic components are quickly used during the month preceding egg-laying and are transformed into lipid stocks for the oocytes. One-year-old oysters develop at different rates, some of them not showing any sign of maturation and the percentage of laying individuals varies through the years. Glycogenated stocks accumulate in a similar way in both age-classes and their more precocious and more intense use by young molluscs is not necessarily linked with their gametogenesis and growth,...
Tipo: Text
Palavras-chave: Bay of Arcachon; Maturation; Biochemistry; Crassostrea gigas; Bassin d'Arcachon; Maturation; Biochimie; Crassostrea gigas.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-6182.PDF

Estimation de la biomasse d'huîtres Crassostrea gigas en élevage dans le bassin d'Arcachon. Été 1985.
Provedor de dados: 5
Autores: Maurer, Daniele; Borel, Michel; Dreno, Jean-paul.
L'élaboration d'un modèle de gestion d'un bassin conchylicole nécessite, en particulier, la connaissance de l’évolution des stocks d'huîtres d'une année à l'autre afin d'en apprécier l'influence éventuelle sur le rendement.  Le présent travail décrit la méthodologie utilisée et les résultats obtenus au cours de la première estimation du stock d'huîtres Crassostrea gigas en élevage dans le bassin d'Arcachon en 1985.  Cette estimation nécessite l'utilisation simultanée de photographies aériennes (évaluation de la surface réellement exploitée ) et de sondages-terrain (évaluation de la biomasse par unité de surface). Ces derniers ont également permis de valider les résultats obtenus par photographie.  En 1985, le taux d'exploitation variait, selon la zone...
Tipo: Text
Palavras-chave: Crassostrea gigas; Biomasse; Bassin d'Arcachon; Crassostrea gigas; Biomass; Bay of Arcachon.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00102/21342/18965.pdf