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Registros recuperados: 36
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Analyse quantitative et qualitative des captures de tourteaux Cancer pagurus par la flottille de Manche-ouest ArchiMer
Latrouite, Daniel; Morizur, Yvon.
French potters from « Manche ouest » harbours ish edible crab Cancer pagurus in English Channel, Iroise Sea and along north Biscay Bay shelf. Monthly landings of the offshore fleet analysed from logbooks for the period 1985-1987 indicate changes in fishing areas. The mean length of males, the mean length of females and the sex-ratio have been analysed by Principal Component Analysis in 1981-1987 samples. The heterogeneity between catches from different statistical rectangle (30 x 40 nautical miles) was great enough to deduce a way of raising composition from samples to total landings. It also offers the possibility to verifiy and correct declaration on geographical origin of landings.
Tipo: Text Palavras-chave: Biscay Bay; Catch composition; France; Western Channel; Sampling; Iroise; Edible crab; Cancer Pagurus; Fishing; Golfe de Gascogne; Iroise; Manche; Echantillonnage; Composition des captures; Tourteau.
Ano: 1988 URL: http://archimer.ifremer.fr/doc/1988/acte-1416.pdf
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Aquaculture extensive et repeuplement ArchiMer
Buestel, Dominique; Nicolas, R.; Morize, E.; Rohan, R.; Latrouite, Daniel; Le Borgne, Y.; Cochard, Jean-claude; Flassch, Jean-pierre; Uno, Yutaka; Audouin, Jacques; Legall, J.y.; Jezequel, M.; Lorec, J.; Henocque, Yves; Reveche, C.; Girin, Michel; Laurec, Alain; Herry, P..
L'aquaculture extensive et le repeuplement sont deux modes d'exploitation des ressources halieutiques qui ne font appel, une fois les juvéniles produits, ni à un apport de nourriture artificielle, ni à un contrôle continu de la part de l'exploitant, mais dépendent par contre de la productivité du milieu marin, Cette approche repose sur l'idée que le principal facteur limitant d'une population naturelle est le faible nombre de survivants après les premiers stades, et que l'on peut par alevinage, aménagement du milieu ou autres techniques, augmenter la production d'une espèce exploitable, Le but de ces journées d'étude est de faire le point des connaissances sur ces sujets, à l'intention des scientifiques mais aussi des utilisateurs, Il a paru souhaitable de...
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00018/12941/9907.pdf
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Behaviour and habitat utilisation of seven demersal fish species on the Bay of Biscay continental slope, NE Atlantic ArchiMer
Uiblein, F; Lorance, Pascal; Latrouite, Daniel.
Much is known in very broad terms about the distribution of deep-sea fishes, but information on fine-scale habitat selection and behaviour in the largest living space on earth is still rare. Based on video sequences from 4 dives performed with the manned submersible 'Nautile' at depths between 400 and 2000 in in the Bay of Biscay, NE Atlantic, we studied the behaviour of co-occurring slope-dwelling deep-sea fishes. Five different habitats were identified according to depth range or topographical and hydrological characteristics. For each fish species or genus that could be identified, estimates of absolute abundance were provided. The most frequently occurring species, round-nose grenadier Coryphaenoides rupestris, blackmouth catshark Galeus melastomus,...
Tipo: Text Palavras-chave: Submersible observations; Assemblage structure; Density; Locomotion; Vertical positioning; Foraging; Species specific; Behavioural flexibility.
Ano: 2003 URL: https://archimer.ifremer.fr/doc/00000/10666/7591.pdf
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Bilan des essais d'élevage de la palourde sur le littoral Morbihannais - 1979 ArchiMer
Latrouite, Daniel; Perodou, Dominique.
Au cours des 15 dernières années, l'évolution des techniques ostréicoles a profondément modifié la structure sociale de cette profession. La maladie de l'huître portugaise (1970/1971), celle de la plate depuis 1969, ont provoqué de nouveaux bouleversements. Ces derniers évènements montrent les risques que courent les exploitations reposant sur la monoculture. La mise au point au JAPON, aux USA puis en ANGLETERRE et en FRANCE des techniques de production du naissain de diverses espèces de palourdes et le développement des écloseries à mollusques, permettent d'envisager l'élevage de ces coquillages pour lesquels la collecte en milieu naturel n'est pas contrôlée. Les premiers essais furent pour la plupart réalisés en plaçant les palourdes dans des poches...
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Ano: 1979 URL: http://archimer.ifremer.fr/doc/00046/15694/13096.pdf
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Bilan des essais d'élevage de la palourde sur le littoral Morbihannais - 1981 ArchiMer
De Kergariou, Gabriel; Latrouite, Daniel; Perodou, D.; Claude, Serge; Jomier, L..
Le contrat de pays d'Auray avait permis de réaliser en 1979 une première série d'essais d'élevage de palourdes en milieu ouvert. Les résultats ont été exposés dans un rapport intitulé: "Bilan des essais d'élevage de la palourde sur le littoral morbihannais" diffusé en Décembre 1979. Les principales conclusions en étaient les suivantes: - la protection des semis contre les prédateurs (crabes verts) est essentielle : le barrage à naissain utilisé traditionnellement en ostréiculture donne de bons résultats dans ce domaine. - la palourde du Pacifique (R. philippinarum) a une croissance et un taux de survie supérieurs à céux de la palourde locale et de ce fait semble mieux adaptée à ce type d'élevage. Le crédit restant (annexe) a permis de financer une seconde...
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Ano: 1981 URL: http://archimer.ifremer.fr/doc/00046/15697/13099.pdf
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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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Catalogue international des activités des flottilles de Manche, approche des interactions techniques ArchiMer
Tetard, A; Boon, M; Bennett, D; Berthou, Patrick; Bossy, S; Casey, J; De Clerck, R; Delpech, Jean-paul; Dintheer, C; Giret, M; Large, P; Latrouite, Daniel; Lemoine, Michel; Millner, R; Morizur, Yvon; Ozanne, S; Palmer, D; Pawson, M; Pickett, G; Vince, M.
This work is the result of collaboration between the English, French, Channel Isles and Belgian laboratories which are involved in a study of the English Channel. Its subject is the activities of fleets and fleet interactions, and it complements other work on the biogeographical identification of Channel fish and shellfish stocks (published), and on modelling the fleets' interactions as they exploit the resources (in preparation). The concept of a métier is defined as being the use of one fishing gear to catch one or several species targeted during a particular season in a given area. On this basis, 74 métiers were identified during 1989-90. For each métier we give a brief description of the catching gear, the target species and most usual by-catch, the...
Tipo: Text Palavras-chave: Fisheries management; Fishing effort; Technical interactions; English Channel; Métier; Gestion des pêcheries; Distribution de l'effort de pêche; Interactions techniques; Manche; Métiers.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-704.pdf
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Compte-rendu de la campagne OBSERVHAL98 - Observations à finalité halieutique ArchiMer
Latrouite, Daniel.
The scientific cruise Observhal98 took place in Biscay Bay, May 14 to June 6, 1998, with the submersible Nautile operated from the research vessel Nadir. The goal was to make direct underwater observations on fishes and invertebrates of commercial interest, on the environment in which they live and on the impact of fishing gears. A total of 22 dives, 2 to 5 hours long have been operated, ten by depth 1800 to 1000 m, three by 500 to 200 m, seven by 80 to 200 m and two in the water column. An in situ technic have been developped and operated from the submarine, with the aim of studying the growth scheme of deep water fishes. Specimen of Hoplostethus atlanticus and Trachyscorpia cristualata have been caught, anesthetised, injected with vital coloring and...
Tipo: Text Palavras-chave: Halieutique; Nautile; Plongée; Sous marin; Expérimentation; Observation; Fisheries; Nautile; Dive; Submarine; Experimentation; Observation.
Ano: 1999 URL: https://archimer.ifremer.fr/doc/1999/rapport-920.pdf
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Contribution à l'étude de la reproduction du pétoncle noir (Chlamys varia) de la baie de Quiberon ArchiMer
Perodou, Dominique; Latrouite, Daniel.
La perspective de reconstituer des gisements de pétoncle ou de pratiquer une aquaculture extensive nous a conduits à réaliser en baie de Quiberon des expériences de captage de naissain. Des observations sur la reproduction ont été faites à cette occasion. La période d'activité gonadique s'étend de Mars à Septembre mais la ponte principale intervient au début du mois de juin ; elle ne se concrétise par un bon taux de fixation que si la température de l'eau est au moins égale à 16°C. Des pontes secondaires sont observées jusqu'en Août - Septembre. Cette espèce est hermaphrodite est la relation entre le sex-ratio et la taille conduit à suggérer que la création de réserves provisoires sur un gisement exploité serait de nature à améliorer le potentiel...
Tipo: Text Palavras-chave: Pétoncle noir; Chlamys varia; Reproduction; Captage; Baie de Quiberon.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00021/13260/10307.pdf
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Données sur la biologie de Ruditapes philippinarum et Ruditapes decussatus en élevage sur la côte morbihannaise ArchiMer
De Kergariou, Gabriel; Latrouite, Daniel; Perodou, D.; Claude, Serge.
Des essais d'élevage de palourdes en milieu ouvert ont été réalisés sur le littoral morbihannais en 1979 et 1980. R. philippinarum atteint une taille commercialisable au bout de 18 mois à 2 ans suivant le site et la densité au semis. Les taux de survie observés sont supérieurs à 50% pour les essais réalisés en 1979, mais inférieurs pour ceux effectués en 1980. Une mortalité quasi totale de R. decussatus a été observée après 6 mois d'élevage, et la croissance des individus survivants est nettement moins rapide que pour l'espèce précédente. Les résultats montrent que R. philippinarum est mieux adaptée, et ils permettent de proposer un protocole d'élevage pour le secteur considéré.
Tipo: Text Palavras-chave: Palourdes; Biologie; Ruditapes philippinarum; Ruditapes decussatus; Elevage; Morbihan.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/00021/13258/10305.pdf
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Données sur la reproduction et la taille de première maturité du homard Homarus gammarus d'Iroise et du golfe de Gascogne ArchiMer
Latrouite, Daniel; Leglise, Michel; Raguenes, Gérard.
This paper deals with the lobsters caught by French fishermen off the "Conquet" (Iroise sea) and off "Ile d'Yeu" (Biscay Bay) on the French atlantic coast. The size at first maturity, defined as the size at which 50 % of female are able to reproduce, is deduced from the analysis of size frequency in landings. It is also shown that more than 50 % of the mature female are spawing each year ; the periods of hatching in the natural environment are also established.
Tipo: Text Palavras-chave: Size at maturity; Western Channel; Reproduction; Homarus gammarus; Lobster; Atlantic; Biscay Bay; Iroise sea; Golfe de Gascogne; Iroise; Manche; Taille de maturité; Reproduction; Homarus gammarus; Homard.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/acte-1414.pdf
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Essai de culture suspendue de la Coquille Saint Jacques Pecten maximus: influence de la transplantation sur le développement gonadique ArchiMer
Latrouite, Daniel; Claude, Serge.
La mise au point et le développement de techniques de captage en milieu naturel et de production en milieu contrôlé permettent d'envisager pour la coquille Saint Jacques une aquaculture extensive du type de celle réalisée pour l'huître sur parc non découvrant : un ou plusieurs centres favorables à la collecte du naissain pourvoient en juvéniles des secteurs propices à l'élevage. Une plus value marchande peut être obtenue lorsque le changement de milieu s'accompagne de modifications physiologique ou organoleptiques. Ainsi, la présence de la glande génitale développée (ou corail) est particulièrement appréciée du consommateur français. Cet état s'observe tout au long de l'année sur les gisements de Bretagne Sud et de Rade de Brest alors qu'en Baie de Saint...
Tipo: Text Palavras-chave: Conchyliculture; Coquille Saint Jacques; Captage; Croissance; Mortalité; Elevage.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00015/12660/9531.pdf
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Etude des stocks halieutiques de langoustes au Cap Vert et proposition de modalités de gestion de ces stocks - Rapport de mission 5 au 15 décembre 1996 ArchiMer
Latrouite, Daniel.
Cette mission s'inscrit en exécution de la Convention franco-capverdienne "Appui aux filières productives primaires au Cap Vert", composante 03 Pêche", financée par le Fond d'Aide et de Coopération (Convention n° 95005500 du 17 janvier 1996). Elle a été réalisée conformément aux termes du protocole n°96/1212642/F entre la Mission Française de Coopération et d'Action Culturelle à Praïa et l'Institut Français de Recherche pour l'Exploitation de la Mer. Elle constitue la prestation "mission d'expert Ifremer au Cap Vert" prévue pour l'année 1996. Elle avait pour objectifs particuliers: - dans le cadre de la Réunion sur l'Investigation et la Gestion Halieutique au Cap Vert, établir et présenter un point sur les ressources en langoustes, leur exploitation et...
Tipo: Text
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00069/17980/15508.pdf
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Etude préalable à la gestion des stocks de crustacés en Bretagne ArchiMer
Autissier, Isabelle; Coum, Andrée; Cuillandre, Jean Pierre; Veron, Gerard; Latrouite, Daniel.
At the end of the seventies, as fishing abundance (based on Catch Per Unit Effort) in crabs and lobster fishery steadily declined, operating expenses increased, and fishing boats changed strategy (changing metiers, covering larger distance to fishing areas, fishing seasons being extended, ...) professionals and scientists aimed to consider reinforcing management measures. To enlighten and support potential related decisions, the Comité Régional des Pêches et Cultures Marines de Bretagne (Regional Committee for fishing and farming in Brittany), together with the ISTPM (Ifremer since 1984), conducted a survey on the exploited populations and gave a review of the involved Breton fleet. This report shows the results of a survey conducted among fishermen,...
Tipo: Text Palavras-chave: Landings; Catch rates; Fishing area; Fishing effort; Fleet; Brittany; Edible crab; Lobster; Spider crab; Apport; Rendement; Zone de pêche; Effort de pêche; Flottille; Bretagne; Tourteau; Homard; Araignée.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/rapport-1548.pdf
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Étude préparatoire a une reconquête des niveaux de ressource en langouste royale (Palinurus elephas) en mer d'Iroise ArchiMer
Latrouite, Daniel; Lazure, Pascal.
The study conducted in the framework of an agreement between Ifremer and the Local fisheries committee at Audierne is part of a project to restore spiny lobster Palinurus elephas stock levels in the Iroise Sea. It is supported by professional fishermen from Finistère and by the Regional fisheries committee of Brittany. After a brief review of the way lobster stocks are managed worldwide, followed by the major biological and ecological features of red lobster and the state of fisheries in Europe and North Africa, the very poor state of the resource along French coast is borne out by the statistics of landings. Various scenarios (not alternatives) to promote the rebuilding of the biomass are suggested: minimum landing size increase, seasonal closure of...
Tipo: Text Palavras-chave: Phyllosoma; Iroise; Stock; Rebuilding; Overfishing; Palinurus elephas; Red lobster; Phyllosomes; Iroise; Stock; Reconstitution; Surexploitation; Palinurus elephas; Langouste rouge.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/rapport-1198.pdf
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Fécondités individuelle et par recrue du homard européen Homarus gammarus (L.) des cotes françaises ArchiMer
Latrouite, Daniel; Morizur, Yvon; Raguenes, Gerard.
Several relationships between the fecundity and the weight or the size of females have been studied for three different (based on "eye-index") stages of incubation. The relationship between the average weight of eggs at the beginning of incubation and the size of the females shows that the egg size varies according to the female's size. Loss of eggs during incubation has been studied ; the average loss between the two extreme stages of incubation is around 27%. This is a lowered value of what accurs during the whole incubation period. Egg losses are greater for small females than for big females. The annual frequency of spawning and size at first maturity have been determined in for differents fishing effort than by the commercial size.
Tipo: Text Palavras-chave: Maturity; Fecundity per recruit.; Reproduction; Europe; France; Lobster; Aquiculture; Homarus gammarus; Fecundity; Fécondité par recrue; Fécondité; Maturité; Reproduction; Homarus gammarus; Homard.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-1404.pdf
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Identification biogéographique des principaux stocks exploités en Manche, relations avec ceux des régions voisines ArchiMer
Bennet, D; Casey, J; Dare, P; Dawson, W; Flatman, S; Hulme, T; Macer, C; Millner, R; Pickett, G; Vince, M; Lorance, Pascal; Souplet, A; Giret, M; Morin, Jocelyne; Berthou, A; Latrouite, Daniel; Morizur, Yvon; Bossy, S; Ozanne, S.
At present, the majority of fisheries are monitored and regulated in areas which are delineated by arbitrary ICES boundaries which do not necessarily have logical or consistent relationships with biological processes or fish movements. The biogeographical identification of Channel stocks is, therefore, an important step towards developing a rational strategy for the management of their fisheries. This synthesis is based on the wide available knowledge which has not been yet entirely exploited with the purpose of stock identification, for 25 commercially important species in the Channel. In addition, principal technics for stock identification are reviewed likewise environmental characteristics of the Channel, which represent fundamental components in...
Tipo: Text Palavras-chave: Environnement physico chimique; Méthodes d'identification; Migrations; Zones de ponte; Distribution géographique; Espèces exploitées; Identité de stock; Manche; Physical environment; Identification methods; Migrations; Spawning areas; Geographical distribution; Exploited species; Stock identification; Channel.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/1993/rapport-719.pdf
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La flottille artisanale française de Manche Ouest. Bilan des connaissances ArchiMer
Morizur, Yvon; Berthou, Patrick; Latrouite, Daniel; Veron, Gerard.
A survey made during 1986-1987 on the artisanal fleet of the artisanal fleet in Northern Brittany and Western part of Cotentin allowed to describe this fleet in term of activity and metiers. Catches are given by species and by type of fishing activity. The result permit to outline interactions between the various activities and exploited resources. A summary of knowledge on exploited species is given.
Tipo: Text Palavras-chave: Flottille; Métiers; Typologie; Interactions; Expèces exploitées; Manche; Fleet; Metiers; Interactions; Exploited species; Channel.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/00422/53390/54252.pdf
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Le développement de la crépidule sur le gisement de coquilles Saint-Jacques de la baie de Saint-Brieuc ArchiMer
Dupouy, Hervé; Latrouite, Daniel.
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Ano: 1979 URL: http://archimer.ifremer.fr/doc/1979/publication-7161.pdf
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Le tourteau (Cancer pagurus) et son exploitation par les flottilles de Bretagne Nord, 1984-1988 ArchiMer
Latrouite, Daniel.
Due to the unsuitability of the north brittany coastal fishing grounds for trawling, the fishing activity of the harbours of this coast has been oriented towards the catch of invertebrates and peculiarly the large crustaceans. After, in the beginning of the XIX century, looking for lobster and spiny lobster, fishing has been, since the seventies, centered on the catch of the edible crab (Cancer Pagurus) and of the spider crab (Maia squinado). The first part of this document introduces the context of the exploitation and the concerned fleets. The second part treats of the biological parameters of the edible crab: growth, reproduction, migration and pathologies. The third part, devoted to the exploitation and the monitoring of the edible crab stock, is an...
Tipo: Text Palavras-chave: Exploitation; Biology; Cancer pagurus; Edible crab; North brittany; Exploitation; Biologie; Cancer pagurus; Tourteau; Bretagne Nord.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/rapport-689.pdf
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