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| Registros recuperados: 104 | |
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| Moraga, D; Lucas, A. |
| The three populations studied were situated on the west coast of Brittany: to the North (Diben), to the West (Tinduff) to the South (Ile Tudy). 25 to 57 analysis were carried out on each of the 19 enzymatic systems where 27 loci had been recognized. Six of which were not interpreted, 10 were monomorphic, 11 polymorphic. Among these latter, the analysis of 4 of the loci were not used as the determination was too confused. Therefore, the comparison of the 3 populations was carried out on 7 polymorphic loci (EST3, HK2, LAP2, MDH1, MDH2, GPI, PGM2). Only a rare allele showed one qualitative difference; this coupled with slight quantitative differences in the distribution of the alleles did not permit to distinguish the three various populations. The genetic... |
| Tipo: Text |
Palavras-chave: ANE; France; Brittany Ruditapes decussatus Bivalvia Genetics Enzymes Biopolymorphism Bivalve Mollusque Heterozygotie Polymorphisme enzymatique. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1183.pdf |
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| Mellon, Capucine. |
| Cod (Gadus morhua, L.), whiting (Merlangius merlangus, L.), saithe (Pollachius virens, L.), haddock (Melanogrammus aeglefinus, L.), sole (Solea vulgaris, L.) and plaice (Pleuronectes platessa, L.) make up the main demersal stocks under quota which concern the French fishery in North Sea and Eastern English Channel. The diagnosis on the state of stocks are set up at the International Council for the Exploration of the Sea (ICES). Recommendations which result from the analyses are proposed to the European Union. Most of the stocks are close or outside their safe biological limits. Several reasons account for that such as the high fishing mortality rates and mixed fisheries on species with diverse biological characteristics. Consequently, more and more young... |
| Tipo: Text |
Palavras-chave: Demersal stocks; ANE; North Sea; Eastern English Channel; Mixed fishery; Biological characteristics; Landings; Stock assessment. |
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00447/55905/57907.pdf |
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| Turley, C; Lochte, K. |
| Using in situ incubations in dialysis bags of natural bacterial communities, the change in growth rates over a 2-day period has been studied for the community as a whole and for different morphological groups within the community. A sequence of events during growth of both communities well above (4m) and well below (60m) the thermocline in the stratified waters, close to a shallow sea front in the Irish Sea, was noted. There was evidence not only of a periodic pattern of growth of the whole bacterial community but also of synchronous cell division of groups within the community. An increase in mean cell volume of both 4 m and 60 m bacterial communities preceded an increase in specific growth rate which usually coincided with a decrease in mean cell volume.... |
| Tipo: Text |
Palavras-chave: ANE; Irish Sea Environmental effects Bacteria Oceanic fronts Diurnal variations Vertical distribution Environmental factors Growth. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-951.pdf |
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| Morizur, Yvon. |
| The average length at which female Nephrops norvegicus attain their first maturity was determined during 1977 and 1978 by following the presence of spermatophores and development of the ovaries. During 1978, females were sexually mature at the age of 2 but in 1977 they did not mature before the age of 3. The cumulative maturity curves are sigmoid, due to an overlapping of Gaussian curves. A logistic equation was developed to calculate the percentage of mature females at each length. There is no evidence that the present fishing levels reduce the chances of a female with developing ovaries to be fertilized, since 90 to 100% of such females bear spermatophores. |
| Tipo: Text |
Palavras-chave: Brittany; France; ANE; Crustacea; Nephrops norvegicus; Females; Growth; Sexual maturity. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/publication-2349.pdf |
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| Wilson, P. |
| In England and Wales purification tanks are built to comply with broad operating criteria specified by the Ministry of Agriculture Fisheries and Food. These have been developed over many years with limited availability of data and has resulted in design restrictions which have limited the economic viability and effectiveness of the tanks. The approved method for the large scale purification of mussels has been to spread them in a single shallow layer in large outdoor tanks with access to a supply of clean sea water. This results in a purification plant that requires a lot of land, is labour intensive and generally remote from the harvesting area. In addition such tanks are exposed to ambient conditions and can result in filtration activity, upon which... |
| Tipo: Text |
Palavras-chave: ANE; British Isles; England Escherichia coli Crassostrea gigas Bivalvia Bacteria Tanks Self purification Storage conditions Oyster culture. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-1626.pdf |
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| Registros recuperados: 104 | |
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