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Registros recuperados: 12
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Campagne PROCELT1 : prospection des ressources halieutiques benthiques et démersales aux accores du plateau celtique ArchiMer
Latrouite, Daniel; Dorel, Didier; Dupouy, Herve; Quero, Jean-claude.
The « PROCELT 1 » scientific cruise took place from 5 to 28 June 1984 aboard Ifremer's research vessel «Thalassa». Its main objective was to prospect for benthic and demersal biological resources, whether traditionally fished or potential species, on the Celtic shelf-break between 47°30' N and 52°00' N and to assess them whenever possible. 83 hauls were made in stratified random sampling based on bathymetric criteria (between 200 and 800 metres) using a Lofoten trawl with 31.20 metres of headrope and 17.70 metres of footrope. This document reports on the main results of the survey: biological observations and abundance of main species per layer, observations of invertebrates and collecting of material. 26 spec sheets give the biological observations...
Tipo: Text Palavras-chave: Fisheries; Celtic shelf edge; Exploration; Ocean research cruise; Pêche; Accores plateau celtique; Exploration; Campagne océanographique.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/rapport-1199.pdf
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Comment épargner les juvéniles de soles et de gadidés dans la pêcherie crevettière : expériences de chalut sélectif en baie de Vilaine, première partie ArchiMer
Dupouy, Herve; Vacherot, Jean-philippe; Meillat, Marc.
The French brown shrimp (Crangon crangon) fishery employs on a seasonal basis around 140 ships about 10 metres in length and with engines of about 100 kilowatts of power. It takes place mainly along the coastal bottoms of silted-up sand at a depth of 2 to 10 metres and occupies principally the coasts of the eastern English Channel and those of the Gulf of Gascony. The brown shrimp catch is performed by bottom trawl, with exempted meshing of 20 mm (stretched mesh), which causes numerous rejects of immature fish that live on the same bottoms. The main part of these juveniles is made up of flat fish (sole, in particular) and of gadidae (whiting and pout). To reduce these undesirable catches that are also detrimental to other fisheries, some ingenious...
Tipo: Text Palavras-chave: Selective trawl; Devisme trawl; Asselin trawl; Brittany; Bay of Vilaine; Gadides; Sole; Whiting; Pout; Juvenile; Chalut devisme; Chalut Asselin; Chalut sélectif; Baie de Vilaine; Gadidés; Soles; Merlan; Tacaud; Juvéniles.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/1997/rapport-2669.pdf
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Comment épargner les juvéniles de soles et de gadidés dans la pêcherie de crevette grise, Deuxième partie ArchiMer
Vacherot, Jean-philippe; Dupouy, Herve; Meillat, Marc.
Starting from the year 2000, the European Union planned to establish the use of a selective trawl in brown shrimp (Crangon crangon) fisheries. In fact, the brown shrimp is caught by a bottom trawl equipped with stretched 20 mm exempted meshing in estuary areas where the nurseries of flat fish and gadidae are located. For Vilaine's estuary, Dupouy et al (1997) estimated at about 1 tonne of flat fish and one tonne of gadidae the loss in equivalent fish of marketable size, per landed tonne of brown shrimp. In this document, the authors introduce improvements resulting from the use of selective trawls developed in France (Asselin and Devismes trawls), and they show by what means the selectivity of these trawls can be improved further.
Tipo: Text Palavras-chave: Bay of Vilaine; Common shrimp; Selective trawl; Whiting; Pout; Gadides; Soles; Juveniles; Baie de Vilaine; Crevette grise; Chalut sélectif; Merlan; Tacaud; Gadidés; Soles; Juvéniles.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/rapport-2670.pdf
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Estimation des paramètres de croissance. Apport des techniques de rééchantillonnage (Bootstrap - Jackknife) et des statistiques robustes (médianes et modes) ArchiMer
Gros, Philippe; Laurec, A.; Dupouy, Herve.
This paper is devoted to statistical problems associated to the estimation of the parameters of a Von Bertalanffy growth curve. A first part corresponds to theoretical considerations, first within the classical regression point of view, corresponding to residuals normaly and independently distributed, then to resampling techniques (Jackknife/Bootstrap). The possibility of using not only the arithmetic mean of observed lengths for a given age, but also medians and modes is discussed. A software has been written in Fortran, which makes it possible to fit by (Weighted) least squares either mean, median or modal length at age, and provides estimates of variances/covariances using the classical approximation within regression theory or resampling techniques. An...
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Ano: 1987 URL: http://archimer.ifremer.fr/doc/00394/50575/51267.pdf
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Etude de la croissance des baudroies, Lophius piscatorius et L.budegassa , de l'Atlantique nord-est obtenue a partir de l'illicium. ArchiMer
Dupouy, Herve; Pajot, Régis; Kergoat, Bernard.
The growth in length of the two European anglerfishes (Lophius piscatorius and L. budegassa ) was studied from samples collected in ICES areas VII and VIII during 1984. Because of the difficulty on otoliths reading, a method based on illicium sections was developed. Moreover, morphological features of the sections can be useful in separating the two species. The location of winter rings was measured; length-frequency analysis and backcalculation was used as a first attempt to validate direct ageing.
Tipo: Text Palavras-chave: Lophius budegassa; Lophius piscatorius; Length weight relationships; Age determination; Growth.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/publication-1794.pdf
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Etude d'une gestion optimale des pecheries de langoustines et de poissons demersaux en mer Celtique ArchiMer
Laurec, Alain; Charuau, Anatole; Perodou, Jean-bernard; Nedelec, Daniel; Biseau, Alain; Durand, Jean-louis; Rivoalen, Jean-jacques; Dupouy, Herve; Le Louarn, G.; Leroux, L..
The general study, scheduled from 1984 to 1986, aims at providing a judgement about the fisheries in the Celtic Sea. This area has been chosen because it is frequented by EEC vessels with, for the time being, a large majority of French vessels. Activities there are easier to monitor than anywhere else as coastal fisheries are little developed in the area. The final product will consist of a certain number of hypotheses about the planning strategies that could be implemented in the Celtic Sea. The main idea is, firstly, to conduct analytical studies, stock by stock, in order then, to synthesize them into a model integrating the interactions between fleets in relation to their target species. A bio-economical model, deriving from the latter, will enable the...
Tipo: Text Palavras-chave: Monk; Cuckoo ray; Blue whiting; Cod; Hake; Ling; Common dab; Data bases; Fishing statistics; French fisheries; Demersal fish; Nephrops; Celtic Sea; Baudroies; Raie fleurie; Julienne; Cardine; Morue; Merlu; Merlan; Base de données; Rejets; Statistiques de pêche; Pêcheries françaises; Poissons demersaux; Langoustine; Mer Celtique.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/rapport-3671.pdf
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Les activités de pêche côtière dans le quartier maritime de Concarneau ArchiMer
Dupouy, Herve.
Ce travail m'a été confié par M. GLEMAREC dans le cadre du contrat n° 73, passé avec le C.N.E.X.O., contrat qui s'insère dans le schéma d'Aménagement du Littoral Breton. La Laboratoire d'Océanographie Biologique de l'Université de Brest ayant établi des cartes biosédimentaires du littoral ouest et sud de Bretagne, il a été jugé utile de chiffrer les activités des pêches côtières et de les surimposer sur ces cartes. A titre expérimental, le quartier maritime de Concarneau a été choisi, étant donnée la diversité des types de pêches, les fonds étant parallèlement les plus variés qui puissent être sur le littoral breton. Ce travail a été volontairement très limité dans le temps (d'Octobre à Décembre 1973), il n'est qu'une esquisse et tente de dégager une...
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Ano: 1974 URL: http://archimer.ifremer.fr/doc/00105/21596/19176.pdf
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Les baudroies ou lottes, espèces majeures de la pêche française: situation et perspectives ArchiMer
Dupouy, Herve; Andro, M; Avrilla, J.l.; Fifas, Spyros; Kergoat, Bernard; Morizur, Yvon; Mtimet, M; Pennober, J.p; Rivoalen, Jean-jacques.
Tipo: Text Palavras-chave: North East Atlantic; France; Trade analysis; Commercial species; Angler; Monk; SEM; Débarquement; Recrutement; Engins de pêche; Lophius budegassa; Lotta lotta; Lophius piscatorius; Baudroie; Lotte.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-2187.pdf
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OBSERVHAL96, campagne d'observations à finalité halieutique ArchiMer
Latrouite, Daniel; Antoine, Loic; Cosson, Nathalie; Danel, Patrick; Desaunay, Yves; Dupouy, Herve; Galgani, Francois; Lorance, Pascal; Morandeau, Fabien; Morizur, Yvon; Rivoalen, Jean-jacques; Sacchi, Jacques; Troadec, Herve.
The scientific cruise Observhal96 took place in August 4-27, 1996 with the underwater system for exploration and intervention « Cyana » and the support vessel « Suroît ». The goal of this IFREMER first use of a man opereted submersible for a fisheries study was to observe fishes and invertebrates in their environment, as well as fishing gears in operation. All the dives, 2 to 5 hours long, took place off Brittany in Atlantic. Five were shalower than 100 meters, nine between 100 and 200 meters, one at 400 meters and for deeper than 1000 meters. Six dives have been dedicated to in situ study of the impact of fishing gears : observation of the geometry of a monkfish tramel net and analysis of losses during hauling ; tracks of a bottom trawl and relative...
Tipo: Text Palavras-chave: Fish behaviour; Fishery ecology; Submarine Cyana; Dive; Underwater observation; Comportement des poissons et invertébrés; Ecologie halieutique; Submersible Cyana; Observation sous marine.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/1996/rapport-1554.pdf
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Preliminary results of a trawl fitted with a selective grid for the fishery of benthic species from Celtic Sea and Bay of Biscay ArchiMer
Meillat, Marc; Dupouy, Herve; Bavouzet, Gerard; Kergoat, B.; Morandeau, Fabien; Gaudou, Olivier; Vacherot, Jean-philippe.
The fishery for benthic species (Monkfish, Megrim, Rays, etc ... ) represents for the surrounder countries of the Celtic Sea and the Bay of Biscaye one of the most important activities . An estimate of the discards of the main species resulting from the sorting practice onboard of the trawlers participating in this fishery was made in 1985 and 1991. it was concluded that an important quantity of juveniles of Rays, Megrim and Monkfish are discarded each year causing an important mortality. The aim of the present paper is to present the preliminary results of a selectivity grid fixed on a bottom trawl to limit as possible the discards. Three different grids were tested at sea during surveys with different results. The major problem is due to difference in...
Tipo: Text Palavras-chave: Chalut sélectif; Grille; Mer Celtique; Golfe de Gascogne; Baudroies; Sardines; Raies; Selectivity; Grid; Trawl; Celtic Sea; Bay of Biscaye; Monkfish; Megrim; Rays.
Ano: 1991 URL: https://archimer.ifremer.fr/doc/00394/50567/51258.pdf
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Programme d Orientation Pluriannuel concernant une action commune de restructuration, de modernisation et de développement du secteur de la peche ArchiMer
Minet, Jean-pierre; Biseau, Alain; Charuau, Anatole; Dupouy, Herve; Durand, Jean-louis; Perodou, Jean-bernard.
Answering a need of the Office of Regional Marine Affairs of Brittany, the "fisheries" laboratory of the Ifremer in Lorient provides synthesis elements about the status of the stocks of the main species exploited in the Bay of Biscay, Celtic Sea and Western Ireland in 1983. It provides information about the fishing capacity according to the different jobs done and compares two fleets from South-Brittany: Lorient and Concarneau. This report will have to be completed by the laboratories of Roscoff for activities in North-Brittany and of la Rochelle for activities in the Bay of Biscay.
Tipo: Text Palavras-chave: Fishing fleet; Concarneau; Lorient; Fishing resources; West Ireland; Celtic Sea; Bay of Biscay; Brittany; Fishing; Flottille de pêche; Concarneau; Lorient; Ressource de pêche; Ouest Irlande; Mer Celtique; Golfe de Gascogne; Bretagne; Pêche.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/rapport-3635.pdf
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Rationalisation de l'échantillonnage biologique pour l'évaluation des stocks des pêcheries marines en golfe de Gascogne ArchiMer
Pelletier, Dominique; Beucher, Helene; Chevalier, Robert; Laurec, Alain; Alperi, J.; Pereda, P.; Guichet, Roger; Dupouy, Herve; Peronnet, Isabelle.
The aim of the project "rationalization of biological sampling for stock assessment of marine fisheries in the bay of Biscay" is to perform statistical methods and computer programs allowing to test prognoses and diagnoses based on estimates of fishing mortalities, recruitments, yields per recruit, and the "gain-loss" function. The project gathers the laboratories of the community working on the Bay of Biscay fisheries, namely - Santander in Spain (1. E. 0) - La Rochelle and Lorient in France (IFREMER). A descriptive study has been carried out. The prepared documents contain a description of the procedures used to collect the information, by each of the laboratories involved, on: - landings - biological samplings. More comprehensive data have been gathered...
Tipo: Text Palavras-chave: Capture; Marine biology; Fisheries; Megrim; Monk; Hake; Data collection; TAC; Bay of Biscay; Stock assessement; Sampling; Statistics; Capture; Biologie marine; Halieutique; Cardine; Baudroie; Merlu; Collecte de données; TAC; Golfe de Gascogne; Evaluation des stocks; Echantillonnage; Statistiques.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/1991/rapport-3621.pdf
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