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| Registros recuperados: 104 | |
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| Morel, M; Salamon, W. |
| European regulations (Directive EEC/15.07.91) provide that marketing of live bivalve molluscs intended for human consumption must comply with strict bacteriological criteria. In order to comply with these requirements along the Nord/Pas de Calais coast and to preserve shellfish culture activities, a transfer through a depuration plant is the only solution at the present time. IFREMER, with the support of the Nord/Pas-de-Calais regional authorities, conducted an initial study on the use of UV for mussel depuration and on the design of a shellfish depuration plant. This study was used as a basis by TECHMAR Company to design a project for a modular type plant, under contract from the Nord/Pas-de-Calais Region. The basic module consists of two ponds with a... |
| Tipo: Text |
Palavras-chave: ANE; France; Nord France; Nord Mytilus Crassostrea Bivalvia Ultraviolet radiation Self purification Oyster culture. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1625.pdf |
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| Floodgate, G; Jones, G; Yarrington, M. |
| The methane concentrations within both Holyhead Harbour and Western Irish sea sediments were consistent with the hypothesis that methane was the major component responsible for the acoustic turbidity, which is in agreement with Anderson and Hampton (1980) and Vilks and Rashid (1977). Microcosm experiments indicate that, for Holyhead Harbour methanogenesis may be the major contributor to the methane pool held within the sediment. Furthermore sulphate-reducing bacteria, although natural competitors for the most probable substrates of methanogenesis, may be limited in their activity by sulphate concentrations at the depths where methane is being produced. |
| Tipo: Text |
Palavras-chave: ANE; Irish Sea Biogeochemistry Sulphate reduction Bacteria Methanogenesis Sediments. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-942.pdf |
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| Barthelemy, G. |
| In 1989 and 1990, the Brittany Region has conceded a subvention to the shellfish professional organisation, for a study on the sea star proliferation Asterias rubens ; this species is a predator of reared oysters in subtidal zone, specially in the Bay of Quiberon (South Brittany). The sea star species Luidia ciliaris has been identified as an A. rubens predator in laboratory. In presence of A. rubens and various molluscs species, the exclusive prey L. ciliaris is A. rubens . Even deprived of A. rubens they do not eat any bivalve. The first result led us to set up an introduction test of L. ciliaris as the main predator of A. rubens and their relative spatial stability. In prospect of mass introduction of L. ciliaris in the bay, reproduction experiments... |
| Tipo: Text |
Palavras-chave: ANE; France; Brittany; Quiberon Bay Asterias rubens Luidia ciliaris Marine molluscs Biological control Oyster culture Predators. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-921.pdf |
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| Lorance, Pascal. |
| A fisrt survey designed to estimate the impact of the fishery on the multispecific population of the slope has been carried out from June 26th to July 20th 1996 on board of the French R/V Thalassa. This survey took place West of Scotland, between 55 degrees and 57 degrees of latitude North, on an area from where data before exploitation were available and where fishing activity was intensive since the 90's. On this area, the analysis of the species composition by haul only showed that the fish assemblage was structured according to depth. Such a conclusion was not new. However, the positioning of the hauls on two smaller sectors characterized by different slopes and bottoms, and probably by a lesser fishing intensity on the one with rougher bottom did not... |
| Tipo: Text |
Palavras-chave: Multispecies fish population; ANE; Ireland; Hebrid terrace; France; Brittany; Meriadzec Terrace; Continental slope; Survey. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00091/20223/17875.pdf |
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| Quero, Jean-claude; Cendrero, O. |
| Estimation of changes in the relative abundance of fish species in catches off Arcachon, on the shelf and in the Bassin d'Arcachon, from 1727 to the present day, shows that some previously dominant species are becoming scarce. Some are actually not caught now in the south of the Bay of Biscay. Among these are the large bottom-living elasmobranchs with low reproduction rates, such as Echinorhinus brucus, Squatina squatina, Raja batis, Raja brachyura, Dasyatis pastinaca, Myliobatis aquila, Galeorhinus galeus, Mustelus asterias, Raja clavata, ,.. and some actinopterygians, such as Trigla lyra, while catches of Eutrigla gurnardus are much reduced. Bottom trawling is principally responsible for these reductions but all fishing methods used there have... |
| Tipo: Text |
Palavras-chave: Species extinction; Fishing induced effects; Long term changes; Arcachon; France; ANE; Marine fishes. |
| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/1996/publication-3793.pdf |
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| Morizur, Yvon. |
| In crustaceans, size at first maturity is often determined by secondary sexual characters. The present work tries to determine the size at first maturity in Nephrops norvegicus from South-Brittany area with the development of some secondary sexual characters. We study a qualitative character - the presence or absence of ovigerous setae in females and biométrie characteristics - the width of the second abdominal segment in females, the length of the propod at the first pereiopod in males and females - The study of the relative growth of the propod length shows that males may reach sexual maturity at 19mm carapace length. The first maturity in females is reached at 23.5mm later than the coming out of the ovigerous setae. That carapace length is obtained... |
| Tipo: Text |
Palavras-chave: ANE; France Nephrops norvegicus length weight relationships sexual maturity. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/1979/acte-2344.pdf |
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| Grizel, Henri; Comps, Michel; Raguenes, D; Leborgne, Y; Tige, Gilbert; Martin, A. |
| Following the mass mortality of Ostrea edulis, some experiments were conducted with O. chilensis broodstock and spat coming from Chiloe Island (Chile). Concurrently, spat of th same species produced in a hatchery was cultivated. After a small period of growth, these oysters died during the summer. Microscopic observations showed Marteilia refringens and Bonamia ostreae in the oysters' tissue. For these reasons, Ostrea chilensis has not been retained to temporarily replace O. edulis. |
| Tipo: Text |
Palavras-chave: ANE; France Bonamia ostreae Marteilia refringens Ostrea chilensis Ostrea edulis Bivalvia marine mollusks spat mortality parasites parasitic diseases acclimatization oyster culture. |
| Ano: 1982 |
URL: http://archimer.ifremer.fr/doc/1982/publication-1851.pdf |
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| Aloncle, Henri; Delaporte, Francis. |
| This work is divided into 4 parts. First, in a broad introduction, a short history is given on albacore fishing in the bay of Biscay from its origin until its present extension in the neighbourhood of the Acores. This is followed by a history of the research beginning with the first attempts at classifying the albacore and then with the first investigations done on research ships; then the authors explain the reasons and the evolution of their work with reference to what was already known. The 2nd part of the study describes the campaigns of research from 1967 to 1972 to study the albacore in the north east Atlantic and the fishing and prospecting techniques used during these campaigns. The 3rd part of this investigation shows the research works sensu... |
| Tipo: Text |
Palavras-chave: ANE; Thunnus alalunga; Catching methods; Feeding behaviour; Biological rhythms; Ecology. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-2075.pdf |
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| Registros recuperados: 104 | |
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