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| Registros recuperados: 39 | |
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| Gaignon, Jean-louis; Prouzet, Patrick. |
| Les résultats de la campagne 1979-1980 ont montré la nécessité d'améliorer les performances de l'alevinage pour obtenir des résultats de production intéressants en cycle ouvert dans les conditions bretonnes. En effet, une augmentation du taux de smoltification à un an ne semble pouvoir être obtenue dans des conditions économiquement intéressantes (Charge très supérieure à 2 kg/m2), qu'à condition que la taille des tacons soit au moins égale à 6-7 cm en septembre de la première année. En conséquence, l'objectif expérimental de la saison 1980-1981 est de déterminer les conditions d'élevage qui puissent permettre d'obtenir un population homogène ayant une bonne croissance c'est-à-dire très supérieure à celle obtenue en 79-80.... |
| Tipo: Text |
Palavras-chave: Aquaculture; Pisciculture; Production; Juvéniles; Salmo salar; Densité. |
| Ano: 1981 |
URL: http://archimer.ifremer.fr/doc/00143/25381/23519.pdf |
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| Prouzet, Patrick; Martinet, J. P.. |
| 1. Captures des géniteurs Les saumons ont été capturés sur la Nive au barrage de Chopolo situé sur le cours inférieur à proximité de la localité d'Ustaritz (figure 1). Cette opération a été réalisée à l’aide d’une trappe de capture aménagée dans le bassin supérieur de la passe à ralentisseurs. En tout 20 géniteurs ont été capturés sous la responsabilité du CSP et de l'INRA durant la période d'autorisation de capture du 10 mai au 31 juillet 1988. Sur ces 20 saumons, on comptait 19 femelles pour un mâle. Une des femelles était marquée et provenait d'un repeuplement effectué sur la Nivelle par l'INRA. Elle a été de ce fait écartée du lot. |
| Tipo: Text |
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| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/00068/17940/15475.pdf |
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| Boussouar, Ahmed; Le Bihan, Soizick; Arino, Ovide; Prouzet, Patrick. |
| The paper presents a mathematical model of the early larval stage, from spawn to the resorption of the yolk-sac, of the anchovy, Engraulis encrasicolus, of the Bay of Biscay. The model describes the temperature-dependent growth and drift of passive larvae by the currents and vertical turbulence. A numerical code has been built and numerous simulations, fed by both biological (egg surveys by AZTI-San Sebastian, Spain, and IFREMER, France) and physical (circulation model by IFREMER-Brest, France) data, were undertaken. Their main features are presented and discussed here, and some conclusions on the possible utilization of the results in improving estimates of anchovy stocks by the daily egg production method are drawn. |
| Tipo: Text |
Palavras-chave: Passive stage; Numerical simulation; Migration; Growth; Anchovy; Stade passif; Simulation numérique; Migration; Croissance; Anchois. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-518.pdf |
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| Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier. |
| Situation géographique et caractéristiques de la zone prospectée par les professionnels maritimes La zone de pêche étudiée se trouve dans la région du Bas-Adour (cf carte de situation). Elle est limitée en aval par la "barre de l'Adour" et en amont par le "bec du Gave" (confluence de l'Adour et des Gaves réunis) et la première pêcherie des Gaves Réunis. Cela représente une distance prospectée de 33 km. Cette portion de l'Adour est soumise à l'influence de la marée compte tenu de son absence d'élévation par rapport au niveau de la mer. La limite de salure des eaux fixée par le décret du 4 juillet 1853 se situe au pont d'Urt (château de Montpellier) à 22 km de la limite transversale de la mer. Ainsi, l'aire d'étude se situe à la fois en zone maritime et en... |
| Tipo: Text |
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| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00086/19698/17339.pdf |
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| Prouzet, Patrick. |
| Les Maritimes regroupent quatre provinces Canadiennes : Terre Neuve, la Nouvelle Ecosse, le Nouveau Brunswick et l'Ile du Prince Edouard. La superficie des Maritimes est de 539 000 km2, soit 5% de la superficie totale du pays. Au cours de ce voyage, deux provinces des l\tlaritimes ont été visitées le Nouveau Brunswick et la Nouvelle Ecosse. Le Nouveau Brunswick (superficie 73 405 km2) possède un climat tempéré à proximité de la Baie de Fundy, mais il devient nettement continental à l'intérieur de la province. Les précipitations sont abondantes et constantes (1 041 mm en moyenne/an). Une des principales production du Nouveau Brunswick provient de la fabrication de produits manufacturés. La Nouvelle Ecosse (superficie : 55 460 km2) possède un climat... |
| Tipo: Text |
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| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/00153/26469/24574.pdf |
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| Bru, Noelle; Prouzet, Patrick; Lejeune, Michel. |
| The European eel (Anguilla anguilla) is drastically declining in all its distribution area and listed in the red list of the IUCN (International Union for Conservation of Nature). A rebuilding plan was adopted at European level in 2007, Regulation R(CE) 100/2007, to restore eel abundance to the level observed during the seventies. Its implementation started on the 1(st) of January 2009. This species is heavily threatened by numerous activities including fishing, and its management can only be effective through a systemic approach minimizing the whole range of human-induced impacts on the resource and its habitat. In the framework of the European interregional programme INTERREG IIIB-Atlantic Area-the INDICANG project aimed at elaborating abundance... |
| Tipo: Text |
Palavras-chave: Biomass estimates; Exploitation rate; Time series; River; Glass eel; Anguilla anguilla. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00000/11170/7526.pdf |
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| De Casamajor, Marie-noelle; Lecomte-finiger, R; Prouzet, Patrick. |
| Along biometric characteristics, glass eel otoliths were collected during three migration seasons, in the Adour estuary, during the new moon of January. Microstructure reading and measurements of various growth zones bring information on glass eel larval life during their oceanic migration and the transition phase in estuary. The results show significant inter-annual variations of glass eels otolithometric characteristics from the point of view of their typology as of the various growth zones measured during transoceanic migration. The differences observed between the years on the typology level could be related to very fluctuating environmental conditions during recruitment. The differences in measurements carried out on the registered otolith zones would... |
| Tipo: Text |
Palavras-chave: Biometry; Glass eels; Oceanic migration; Larval phase; Otolith. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1544.pdf |
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| Baglinière, J. L.; Bomassi, P.; Bousquet, B.; Chancerel, F.; De Pontual, Helene; Dumas, J.; Euzenat, G.; Fontenelle, G.; Fournel, F.; Gayou, F.; Luquet, J. F.; Maisse, G.; Martin Ventura, J. A.; Marty, A.; Nihouarn, A.; Porcher, J. P.; Prevost, E.; Prouzet, Patrick; Pustelnik, G.; Richard, A.; Troadec, Herve. |
| This report confirms interpretation criteria used in scale reading for age determination of Atlantic Salmon in freshwater and in sea water with typical examples. The difficulties for age determination of wild and reared populations by showing atypical examples are presented. Finally some recommandations to a better knowledge of Atlantic salmon population in south distribution area are proposed. |
| Tipo: Text |
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| Ano: 1985 |
URL: https://archimer.ifremer.fr/doc/00480/59127/61755.pdf |
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| Tabouret, H.; Bareille, G.; Mestrot, A.; Caill-milly, Nathalie; Budzinski, H.; Peluhet, L.; Prouzet, Patrick; Donard, O. F. X.. |
| Heavy metals and organic pollutants were investigated in the Adour estuary (South West France) and associated wetlands using the European eel (Anguilla anguilla) as a bioindicator. Heavy metals (Cu, Cd, Zn, Pb, and Ag) were measured in soft tissue of yellow eels. Mercury (total Hg and MeHg) and organochlorinated compounds (7 PCBs, 11 OCPs) were analysed in muscle. Concentrations in muscle were in agreement with moderately contaminated environments in Europe and were below the norms fixed for eel consumption for heavy metals and OCPs. Analyses of liver showed a higher pressure of Ag and Zn in the downstream estuary than in the freshwater sites whereas Cd was lower in the estuary probably because of the salinity influence. According to quality classes 100%... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00036/14677/11987.pdf |
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| Guerault, Daniel; Desaunay, Yves; Beillois, Pierre; Prouzet, Patrick; Martinet, Jean-pierre; Cuende, François - Xavier. |
| The exploitation of amphihaline species by marine and freshwater commercial fishermen in the Loire estuary in 1989, and by marine commercial fishermen in the Adour estuary from 1985-1991 is described in this study. This fishery employs 320 fishermen and represents a commercial value of 38 million FF. This is mainly due to the exploitation of glass eel, especially in the Loire River, the landings of which have decreased alarmingly. In the Adour River, the diversity of the exploited species and the total commercial value of drift gillnet catches - on the average 43% - in this fishery are high. The landings of migratory salmonid species are high and they may attain 25% of the total commercial value. This study emphasizes the uniqueness, the socio-economic... |
| Tipo: Text |
Palavras-chave: France; Loire; Adour; Atlantique; Socio économie; Biologie; Pêcherie estuarienne; Espèce amphihaline; France; Adour River; Loire River; Ocean; Atlantic; Socio economy; Biology; Estuarine fisherie; Amphihaline specie. |
| Ano: 1994 |
URL: https://archimer.ifremer.fr/doc/1994/rapport-1452.pdf |
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| Prouzet, Patrick. |
| Researcher since 1974 at CNEXO (National Centre for Exploration of the Oceans), then at IFREMER (French Institute for Exploitation of the Sea), I have at the same time brought to the work of researching the dynamics of exploited ichthyologic populations actions for enhanced improvement and transfer of knowledge to help managers and stakeholders administer these resources and restore them if needed. This activity led me to play a double role: that of the expert who is asked to set up "a truth judgment" on a given subject or according to a specific question, and that of the scientist faced with the judgment of his peers who strives not to go against his knowledge (i.e., that which is subject to the criticism of the scientific community). This change of... |
| Tipo: Text |
Palavras-chave: Ecosystem; Ichthyology; Populations dynamics; Halieutics. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/rapport-2167.pdf |
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| Prouzet, Patrick. |
| The general characteristics of the main salmon (Salmo salar L.) stocks in the Massif armoricain (Brittany and Lower Normandy), in the Loire-Allier and in the Adour-Gaves-Nive have been summarized. Due to the poor quality of the previous fishing statistics, there is no clear picture of the historical evolution of the salmon stock. However, a dramatic decrease in the endemic range of Atlantic salmon in France can be shown since the mid-18th century a nd more particularly during the last 50 years. The lack of precise informations describing the size of the catches and the levels of exploitation at sea and in the estuaries make it impossible to estimate the impact that exploitation has led on the evolution of salmon stocks. The mean age of salmon in freshwater... |
| Tipo: Text |
Palavras-chave: Saumon Atlantique; Salmo salar; Captures; Stocks; France; Atlantic salmon; Salmo salar; Catch records; Stocks; France. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/00135/24599/22627.pdf |
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| Registros recuperados: 39 | |
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