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Registros recuperados: 6
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Fluctuations des captures de civelles (Anguilla Anguilla L.) et analyse de la variation de leur capturabilité dans l'estuaire de l'Adour ArchiMer
De Casamajor, Marie-noelle; Bru, N.; Prouzet, Patrick.
Analysis of glass eels catches from 1927 to 1998 in the Adour estuary showed different periods of successive decrease. Fishing periods between 1985 to 1993 were studied iwn order to observe impact of hydroclimatic conditions on the level of catch per unit of effort. This study took place in January when glass eels accessibility by the fishery was generally the highest. With hand and trawl netting that filtered the upper part of the water column, only individuals located close to the surface were accessible. Consequently, factors acting on the migration of glass eels in the water column have a great importance on the fishing success. Among environmental conditions, moon phase and temperature influence were determinant factors on catch variability but a lack...
Tipo: Text Palavras-chave: Capturabilité; Civelle; Estuaire de l'Adour; Phase lunaire; Catchability; Glass eels; Migratory behaviour; Adour estuary.
Ano: 2001 URL: https://archimer.ifremer.fr/doc/00480/59145/61773.pdf
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HYDROTAMIS. Evaluation et amélioration de la qualité des captures de civelles de l’UGA Loire, côtiers vendéens et Sèvre niortaise ArchiMer
Pengrech, Alexis; Morandeau, Fabien; Vincent, Benoit.
La qualité des captures de civelles occupe une importance croissante pour optimiser les projets de repeuplement en France et en Europe et pour mieux valoriser la production. Aussi le Comité régional des pêches maritimes et des élevages marins des Pays de la Loire (COREPEM) a initié une étude visant à améliorer la qualité des captures de civelles de l’UGA LCV, première unité de gestion nationale en nombre de licenciés et en volume de production. Pour réaliser cette étude, le COREPEM s’est appuyé sur l’Ifremer (Laboratoire de Technologie Halieutique de Lorient), le Syndicat mixte pour le développement de la pêche et de l’aquaculture en Pays de la Loire (SMIDAP) et l’Association des pêcheurs professionnels de Loire-Atlantique (AADPPMFEDLA). Ce projet se...
Tipo: Text Palavras-chave: Civelle; UGA LCV; Région Pays de la Loire; Estuaires; Pêcheurs professionnels; Amélioration de la qualité des captures; Tamis à civelles; Hydrodynamisme..
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00292/40296/38734.pdf
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Identification des flux de civelles (Anguilla anguilla) à partir des relations d’allométrie en fonction des conditions hydrodynamiques de l’estuaire de l’Adour ArchiMer
De Casamajor, Marie-noelle; Prouzet, Patrick; Lazure, Pascal.
Biological data on glass eels (Anguilla anguilla) were collected during two successive sampling periods from November to March (1996-1997 and 1997-1998) on the Adour estuary. As for other estuaries, decrease in length (mean of 73.5 to 67.4 mm) and weight (mean of 3.5 to 2.6 dg) of glass eels were observed. Weight and length characteristics were used to identify groups of glass eels. These groups were well distinguished during the first sampling period but some overlaps appeared in the second one. Fluctuations of static allometry and similarity coefficients showed successive glass eels arrivals in the lower part of the estuary during the two seasons. We used fluctuations of the index of similarity in the second period to describe arrivals of glass-eels...
Tipo: Text Palavras-chave: Biométrie; Modèle hydrodynamique; Flux migratoires; Civelle; Estuaire de l’Adour; Biometry; Hydrodynamic model; Migratory flow; Glass-eels; Adour estuary.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00188/29897/28346.pdf
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La peche maritime professionnelle dans l'estuaire de l'Adour en 2000. Importance economique et caracteristiques des captures de poissons migrateurs amphihalins. ArchiMer
Prouzet, Patrick.
This technical report gives the characteristics of the estuarine professional fishing located in the lower course and at the mouth of Adour river during the fishing season 2000. The fishery statistics for all the migratory amphihaline species (excepted glass-eel) are recorded according to the calendar year. For the glass-eel landings, the statistics given are relative to the fishing season (November, 1, 1999-March, 31,2000). The 2000 fishing season is characterized by a medium level of landings around 50 metric tonnes, but a high turnover, the highest of the 1985-2000 series: 1.47 Meuros. An evaluation of the state of the main exploited species is given: Atlantic Salmon, Sea Trout, Allis Shad, Sea Lamprey and Eel (glass-eel and yellow eel). The catch...
Tipo: Text Palavras-chave: Caractéristiques des captures et évolution des stocks; Anguille; Civelle; Lamproie marine; Grande alose; Truite de mer; Saumon atlantique; Espèce amphihaline; Statistique de pêche; Pêche professionnelle estuarienne; Catch characteristics and stock evolution; Yellow eel; Glass eels; Sea lamprey; Allis shad; Sea trout; Atlantic Salmon; Professional esturian fishing; Fish statistic; Amphihaline species.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/rapport-1577.pdf
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Larval history of glass eels, Anguilla anguilla, (Linne, 1758) in migration in coastal and estuarine areas (Adour, Bay of Biscay) as revealed by otolith structure. ArchiMer
De Casamajor, Marie-noelle; Lecomte Finiger, Raymonde; Prouzet, Patrick.
The embryonic past of glass eels vas studied from the interpretation of microstructures registered on otoliths. The aim of this work is to put in evidence possible seasonal modifications of the growth of otoliths so that differences between otoliths of glass eels caught off marine and estuarine environment. So during the season 1999-2000, from November till March, otolith sampling was realised in the Southwestern part of France, in an estuarine and coastal zone. We observed a spatial and temporal evolution of proportions of the three various types of otoliths taken into account. Glass eels sampled at sea sometimes have a mark on their otoliths indicating the transition in the estuary, especially at the end of the fishing season. Measures of growth marks of...
Tipo: Text Palavras-chave: Migration; Larval past; Golf of Biscay; Glass eels; Otolith; Migration; Passé larvaire; Golfe de Gascogne; Civelle; Otolithe.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/publication-664.pdf
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Stades pigmentaires de la civelle Anguilla anguilla (L.) dans les estuaires de la Loire et de la Vilaine ArchiMer
Grellier, Patrick; Huet, Jerome; Desaunay, Yves.
Ce catalogue illustre et complète le travail de référence de ELIE et al. (1982). Il vise à venir en aide aux biologistes amenés à comparer leurs descriptions qualitatives et quantitatives des échantillons de civelles.
Tipo: Text Palavras-chave: Pigmentation; Stades Larvaires; Civelle.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/00085/19614/17254.pdf
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