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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 87
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Age estimation and growth of some deep-sea fish from the northeast Atlantic ocean ArchiMer
Allain, Valerie; Lorance, Pascal.
Age is a necessary parameter used in population dynamics to assess the state of exploited resources. This parameter is poorly known for most deep-sea species (depth > 400 m). This work focused on age estimation from otoliths of Alepocephalus bairdii (Alepocephalidae), Coryphaenoides rupestris (Macrouridae), Helicolenus dactylopterus (Sebastidae) and Hoplostethus atlanticus (Trachichthyidae), which French fishery exploitation, off the west coasts of the British Isles, began the late 1980's. Considering otolith growth zones as annual, the four species all show high longevity: 38, 54, 43 and 130 years, respectively, together with slow growth. The differences in growth between sex were estimated and difficulties in accurately estimating the age were...
Tipo: Text Palavras-chave: Alepocephalus bairdii; Coryphaenoides rupestris; Helicolenus dactylopterus; Hoplostethus atlanticus; ANE; Slope fish; Age estimation; Otoliths.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00000/10396/7690.pdf
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Alimentation du merlan Merlangius merlangus L. en Mer Celtique ArchiMer
Du Buit, Marie-henriette; Merlina, Frédéric.
The importance of predation by the whiting (Merlangius merlangus ) from the Celtic Sea has been studied by analysis of stomach contents. Eight hundred and thirteen whitings have been examined during 1984-1986 period. Fish food totalizes 97% of food. It is chiefly a swimming species: no cannibalism has been observed. The daily food index varies between 2 and 4% according to the length and the annual consumption on fishes of nominal catches (11230 t for 1983) would reach 135,000 t corresponding to species already fished for human consumption and the fish meal industry.
Tipo: Text Palavras-chave: Celtic Sea; ANE; Gadidae; Pisces; Merlangius merlangus; Predator control; Stomach content; Feed composition; Feeding.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/publication-1744.pdf
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Analyse des structures de la peche dans les ports de la cote atlantique francaise de 1961 a 1975 et des incidences du chalutage sur les stocks des principales especes concornees par cette activite dans les mers adjacentes. ArchiMer
Guillou, A; Njock, J.c.
The authors have studied the structure of the fishing fleet for artisanal and industrial fisheries and its activities in the harbours of the Atlantic coast: Douarnenez, Concarneau, Lorient, Saint-Nazaire, Nantes, La Rochelle, Bayonne etc. It appears that the decline of the traditional fishery corresponds to the degradation of the stocks, especially the hake and megrim stocks. The industrial fishery supports the consequences of this overfishing while the artisanal trawling fishery showed in 1975 a relative prosperity. In conclusion, it is evident that stock degradation is chiefly caused by fisheries utilizing too narrow meshes. This is not irreversible and it is probable that a sensible widening of the meshes would permit better management of the potential...
Tipo: Text Palavras-chave: ANE; France Fishery data Stock assessment Commercial fishing Artisanal fishing.
Ano: 1978 URL: http://archimer.ifremer.fr/doc/1978/publication-1952.pdf
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Approche quantitative de la fonction de nourricerie jouée par les systèmes vasières-estuaires ArchiMer
Parlier, Emmanuel.
Coastal fish populations settle more or less frequently, at various stages, estuarine systems. Tidal marshes are one of the components of these mosaics of habitats. The first part of this work describes fish assemblages through the utilisation of these systems by fishes analysed in order to propose a revised functional classification of ecological guilds. T h i s new classification is used to compare fish communities of four estuarine systems in the western coast of France: the Mont Saint- Michel Bay, the Saint-Brieuc Bay, the Loire estuary and the Aiguillon Bay. The second part aims at characterizing the nursery function as defined by Beck et al. (2001). Acombinative approach based on gut content analysis, and stable isotope analysis shows that Yo Y s e a...
Tipo: Text Palavras-chave: Isotope ratio; Otolith; Saltmarsh; Nursery; Mont Saint Michel Bay; Saint Brieuc Bay; Aiguillon Bay; Seine estuary; Loire estuary; NEA; Dicentrarchus labrax; Fish communities; Rapports isotopiques; Otolithe; Marais salés; Nourricerie; Baie du Mont Saint Michel; Baie de Saint Brieuc; Baie de l'Aiguillon; Seine; Loire; ANE; Dicentrarchus labrax; Peuplement de poissons.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/these-4601.pdf
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Bilan des essais d'acclimatation d'Ostrea chilensis sur les cotes de Bretagne. ArchiMer
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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Bilan energetique de la population de coque (Cerastoderma edule ) en baie de Saint-Brieuc, Manche Ouest ArchiMer
Blanchard, Michel.
During one year, from March 1988 to June 1989, the intertidal population of Cerastoderma edule in the Bay of Saint-Brieuc, is investigated. Physiological measurements (ingestion, egestion, respiration and excretion) are monthly carried out in laboratory. We observe that reproductive metabolism influences the results. The energy budget of this cockle population, based on a biomass and production estimate for a 15 x 10 super(6) sq.m. area, is calculated and discussed.
Tipo: Text Palavras-chave: ANE; France; Brittany; St. Brieuc Bay Cerastoderma edule Bivalvia Marine molluscs Experimental research Excretion Ingestion Temperature Oxygen consumption Respiration Animal physiology Biomass Energy budget.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/acte-1716.pdf
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Biologie du copepode Eurytemora affinis hirundoides dans la Gironde: Donnees morphometriques ArchiMer
Feurtet, A; Castel, J.
Eurytemora affinis hirundoides is the most abundant copepod in the Gironde Estuary which is submitted to strong salinity gradients. The response of the populations to these gradients is measured by following the variation of simple biometric characteristics. The observed variations reflect the influence of two important factors: salinity and turbidity.
Tipo: Text Palavras-chave: ANE; France; Gironde Estuary Copepoda Turbidity Biometrics Environmental effects Animal morphology Biology Ecophysiology.
Ano: 1987 URL: http://archimer.ifremer.fr/doc/1987/acte-1406.pdf
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Biosystematique du complexe Solea vulgaris du golfe du Lion (poissons, teleosteens, soleides). Genetique, morphology et etude meristique. ArchiMer
Quignard, Jean-pierre; Pasteur, Nicole; Shehata, Suzanne.
A study of biochemical genetics morphology demonstrates that the two subspecies Solea vulgaris typica and S. v. aegyptiaca are sympatric and sexually isolated in the Golfe du Lion. These two taxa are therefore distinct species. S. vulgaris appears relatively homogenous genetically as well as morphologically in the Atlanto-Mediterranean area; S. aegyptiac shows some morphological variations but no important genetic differentiation in the different regions of Mediterranean.
Tipo: Text Palavras-chave: ANE; France Morphometry Meristic counts Genetics Taxonomy.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-1839.pdf
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Bivalves: Indicateurs de pollution microbienne des eaux littorales ArchiMer
Plusquellec, A; Beucher, M; Legal, Y.
Sea water and mussels from a natural site (Concarneau - France) have been compared for fecal contamination by enumeration of their fecal Coliform and fecal Streptococci content. Mussels contain a significant concentration of bacteria, although this concentration differs for the two indicators. Enumeration of fecal Streptococci in bivalves leads to a reduction of the variability observed in sea water. Mussels allow a more efficient assessment of Salmonella in the marine environment than sea water itself.
Tipo: Text Palavras-chave: ANE; France; Brittany; Concarneau Bay Salmonella Mytilidae Bivalvia Streptococcus Tidal currents Bioaccumulation Marine pollution Sea water Bacteria Pollution indicators Pollution detection Microbial contamination Indicator species.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1005.pdf
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Capture d'une espece nouvelle pour la faune de l'atlantique nord-est Photostylus pycnopterus beebe, 1933 poissons, clupeiformes, alepocephalides ArchiMer
Quero, Jean-claude.
Photostylus pycnopterus Beebe, 1933 is recorded for the lst time off the north-eastern Atlantic.
Tipo: Text Palavras-chave: ANE; Photostylus pycnopterus; New records; Geographical distribution.
Ano: 1974 URL: http://archimer.ifremer.fr/doc/1974/publication-2035.pdf
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Captures au nord de 49° N, de Cyttopsis roseus (Pisces, zeiformes, zeidae), espèce nouvelle pour le plateau celtique, et de Chaunax Pictus (Pisces, lophiiformes, chaunacidae) ArchiMer
De Cardenas, E; Cendrero, O; Quero, Jean-claude; Du Buit, M.h..
Tipo: Text Palavras-chave: ANE; New records; Geographical distribution; Chaunax pictus; Cyttopsis roseus.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/publication-3784.pdf
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Chemical and microbiological aspects of acoustically turbid sediments. ArchiMer
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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Classification and monitoring of shellfish harvesting areas in England and Wales ArchiMer
Rodgers, C; Lees, D; Hudson, S.
The EC Directive (91/492/EEC) on Shellfish Hygiene requires all Member States to classify their shellfish harvesting areas into one of three categories according to the degree of faecal indicator bacteria present in samples of shellfish flesh. Historically, a limited amount of bacteriological data for England and Wales has been collected by Local and Port Health Authorities, the National Rivers Authority, the Ministry of Agriculture, Fisheries & Food and other smaller organisations involves in survey work. However, in order to provide definitive classifications before 1 January 1993, it is necessary to implement on-going monthly sampling programmes at fixed points within each shellfishery. Consequently standardised sample collection protocols and...
Tipo: Text Palavras-chave: ANE; British Isles; Wales ANE; British Isles; England Escherichia coli Bivalvia Bacteria Self purification Marine molluscs Microbial contamination Classification Shellfish.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-1597.pdf
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Consequences des recents changements de maillage sur les rendements de la flotille langoustiniere lorientaise en Mer Celtique ArchiMer
Morizur, Yvon; Charuau, Anatole.
Some trawlers from Lorient (France) are fishing for Nephrops at the North of 48th parallel. During the last years, the mesh size of their cod-end changed twice. It increased from 45 mm to 60 mm at the end of year 1978 and to 70 mm at the end of year 1979.'. Whereas the change to 60 mm seems to have no immediate- effect on Nephrops landings, the increase from 60 mm to 70 mm results in a loss in Nephrops landings of 30-40 %. That loss in Nephrops landings goes with an increase in some by-catches species as whiting, cod and hake.
Tipo: Text Palavras-chave: ANE; Celtic Sea Nephrops Malacostraca Catch statistics Crustacean fisheries Yield Fishery management Mesh regulations.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/acte-2345.pdf
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Contribution a la connaissance du regime alimentaire de la seiche (Sepia officinalis L.) (Mollusque Cephalopode) dans le nord du golfe de Gascogne et dans le golfe du Morbihan: Resultats preliminaires ArchiMer
Pinczondusel, G; Daguzan, J.
The specific analysis of preys allows to determine the composition of cuttlefishes alimentary diet in natural conditions. This analysis based on exploitation of stomachal contents shows a majority of Fishes and Brachyura Crustaceans consumed. The alimentary diet with a Fish dominance in winter area (off Belle-Ille island) becomes a Crustacea dominance when adult cuttlefishes come in Morbihan Bay, in March, for reproduction. As for newly-born, they eat exclusively Crustacean Amphipoda and Macrura.
Tipo: Text Palavras-chave: ANE; France; Brittany; Morbihan Gulf Sepia officinalis Cephalopoda Spring Adults Winter Prey selection Sexual reproduction Stomach content Diets.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-928.pdf
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Contribution a l'etude de la crevette rose Palaemon serratus (Pennant). Exploitation, biologie. ArchiMer
The authors first examines the economical importance of the common prawn fishery and studied its geographical distribution, the fishing gear and methods and the fishing effort and fishery yield. He then gives data on the biology and ecology of P. serratus : size-weight relationships, relative growth, longevity, quantitative repartition (sex-ratio), stock and mortality rate estimation by marking. Finally, he studies the reproduction of the common prawn.
Tipo: Text Palavras-chave: ANE; France Palaemon serratus Population dynamics Catching methods Stock assessment Sexual reproduction Fishery biology.
Ano: 1980 URL: http://archimer.ifremer.fr/doc/1980/publication-1937.pdf
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Contribution à l'étude du genre Pseudoscopelus (Chiasmodontidae) avec une espèce nouvelle, P. pierbartus n. sp., deux synonymies junior et une clé d'identification des espèces valides ArchiMer
Spitz, J; Quero, Jean-claude; Vayne, Jean-jacques.
The genus Pseudoscopelus Lutken, 1892 is easily distinguished from the other Chiasmodontidae by the presence of well-defined rows of photophores. Until 2005, eight species were known. Pseudoscopelus scriptus was the first described by Lutken in 1892, then P. sagamianus by Tanaka in 1908, P. stellatus by Beebe in 1932 and P. altipinnis by Parr in 1933. Later in 1934, Fowler described three new species: P. microps, P. cephalus, and P. obtusifrons. These three species, known from only one specimen each, have not been recorded since. Lastly, an easily distinguishable species, P. scutatus, was discovered by Krefft in 1971. In a recent review, Prokoviev and Kukuev (2005, 2006) confirmed the validity of all species and described a new one P. aphos,...
Tipo: Text Palavras-chave: Taxonomy; Junior synonymy; New species; ANE; P. pierbartus n. sp.; Pseudoscopelus; Chiasmodontidae.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3628.pdf
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Copepodes du plateau continental du Golfe de Gascogne 1971 et 1972. ArchiMer
Beaudouin, Jacqueline.
The spp of copepods occuring on the continental slope of the Bay of Biscay are described. Their distribution in relation to external conditions and the seasons is examined, according to the annual harvests. In conclusion, 2 faunistical sectors corresponding to 2 geographical areas are distinguished in the Bay of Biscay.
Tipo: Text Palavras-chave: ANE; Europe; Biscay Bay Copepoda Continental slope Community composition Marine ecology Taxonomy.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2012.pdf
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Croissance de Crassostrea gigas en Bretagne en 1989, mise en place d'un reseau d'acquisition de donnees ArchiMer
Lebec, C; Mazurie, Joseph.
To provide updated information on the growth of Crassostrea gigas in Brittany, experimental stations on 8 sites (culture area) were monitored. Biometric measurements (length, width,...), meat composition (proteins, lipids, carbohydrates...), quality, survival and parasitism were observed after 7 months. A descriptive study by principal components analysis was conducted to find the most significative variables explaining the variability and classifying the sites. Six groups of station can be identified by their respective performances that have been screened in detail. An optimal strategy was discussed to establish a most efficient data network in Brittany. The yearly variations will be checked up and their correlations with environmental factors tested...
Tipo: Text Palavras-chave: ANE; France; Brittany Crassostrea gigas Bivalvia Monitoring Biochemistry Site selection Aquaculture Rearing Experimental research Pond culture Growth.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/acte-918.pdf
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Cyclothone pseucoaccliniciens sp.nov. (Poissons, Clupeiformes, Gonostomatices.) Nouvelle espece de l'Atlantique. ArchiMer
Quero, Jean-claude.
The author describes a new sp of gonostomatiid fish of the gen Cyclothone Goode and Bean, 1883 which, as C.acclinidens Garman, 1899, has long oblique teeth in the posterior part of the upper jaw. The new sp. C.pseudoacclinidens from the north-eastern Atlantic, differs from Pacific sp, C.acclinidens, by the number of rays of the ventral fins. fins, the number of gill rakers on the first gill arch and the length of gill lamellae.
Tipo: Text Palavras-chave: ANE; Cyclothone; Cyclothone atraria; Cyclothone acclinicens; Cyclothone pseucoacclinicens; Taxonomy; New species.
Ano: 1974 URL: http://archimer.ifremer.fr/doc/1974/publication-2039.pdf
Registros recuperados: 87
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