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Registros recuperados: 8
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Aquaculture, restocking and stock enhancement as an answer to the scallop fisheries management crisis in the areas of Brest and Saint-Brieuc (Brittany) ArchiMer
Paquotte, Philippe.
Since the beginning of the century, scallop fisheries in France have known successive phases of expansion and recession. Although a system of fishing licences has been implemented, the number of fishermen involved in the scallop fishery has increased and huge investments have been made. The important fishing effortduring this period has induced a serions stock depletion, and output has dropped to less than 2 000 m.t. per year since 1986. Hence, the remunerations of capital and labour have dramatically decreased. As early as 1973, attempts have been made to use aquaculture methods for the management of thisstock, following the successful Japanese model. Because of insufficient amounts of spat available from the wild, hatchery and nursery techniques have...
Tipo: Text Palavras-chave: Stock enhancement; Restocking; Scallop; Fishing licence; Aquaculture; SEM; Surpeuplement; Repeuplement; Coquille Saint Jacques; Licence de pêche; Aquaculture.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/publication-4096.pdf
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Caractérisation de l’adaptation comportementale des téléostéens en élevage : plasticité et effets de la domestication ArchiMer
Benhaim, David.
The farming of aquatic animals has started recently in comparison with that of terrestrial species which domestication started 10 500 years ago. Aquaculture is however the fastest growing animal food-production sector. This sector has now to face several challenges threatening its sustainability. Indeed, aquaculture future largely depends upon the reduction of the reliance on feeds based ingredients derived from wild fishery resources, upon a better knowledge of fish domestication process and of the adaptation mechanisms and related welfare potential. The present work aims at a better understanding of the adaptation to farming conditions through a behavioural approach based on the comparison between wild vs. domesticated populations of three species: a...
Tipo: Text Palavras-chave: Adaptation; Plasticité; Domestication; Bien-être; Comportement alimentaire; Activité de nage; Personnalité; Aliment végétal; Labyrinthe; Statut physiologique; Croissance; Aquaculture; Repeuplement; Adaptation; Plasticity; Learning; Domestication; Welfare; Feeding behaviour; Swimming activity; Personality; Plant-based diet; Maze; Physiological status; Growth; Aquaculture; Restocking.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00078/18926/16515.pdf
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Duration of the pre-settlement period of the mangrove crab Ucides cordatus (Decapoda: Ocypodidae) under laboratory conditions BABT
Ventura,Robson; Silva,Ubiratã de Assis Teixeira da; Perbiche-Neves,Gilmar; Ostrensky,Antonio; Boeger,Walter Antonio Pereira; Pie,Marcio Roberto.
The goal of the present study was to determine the most appropriate time to release the immatures of Ucides cordatus (Linnaeus) produced in the laboratory into the natural environments. Specifically, the time when the megalopae sought the mangrove sediment to excavate the burrows was determined, as well as the time necessary for their metamorphosis into the first juvenile stage. Results indicated that the megalopae of U. cordatus reared in the laboratory took three to ten days (median = 6) after their molt to excavated burrows in the sediment. The average time for the megalopae to molt into juveniles was 12.6 days (SD = 2.3).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ucides cordatus; Restocking; Larval rearing; Settlement; Megalopae; Juvenile.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500012
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Dynamique temporelle de la contribution du repeuplement en stades précoces de truite (Salmo Trutta l.) dans la population en place et dans la pêche sur le doubs franco-suisse. ArchiMer
Champigneulle, A.; Degiorgi, F.; Raymond, J. C.; Cachera, S..
The technique of otoliths fluoromarking has been used to evaluate at a large scale the practices of brown trout (Salmo trutta L.) stocking (540 000 - 570 000/year, most of them as sac fry) for three cohorts 1994-95-96 in a part of the River Doubs having a length of 40 km and fragmented in three zones (upstream, median, downstream) by three hydroelectric dams. For each of the three cohorts, there is a rather high contribution (23 to 60% according to the zone) of the stocked fry to the automnal 0+ standing population. The mass marking of all the stocked fry allowed to show that the dynamics of the contribution of the two components of recruitment (natural or stocked) differed. Indeed, the contribution of stocking decreased with time when measured in the...
Tipo: Text Palavras-chave: Salmo trutta; Repeuplement; Marquage; Otolithes; Pêche; Salmo trutta; Restocking; Marking; Otoliths; Angling.
Ano: 2002 URL: https://archimer.ifremer.fr/doc/00480/59141/61769.pdf
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Early life behavioural differences in wild caught and domesticated sea bass (Dicentrarchus labrax) ArchiMer
Benhaim, David; Pean, Samuel; Lucas, Gael; Blanc, Nancy; Chatain, Beatrice; Begout, Marie-laure.
Behavioural studies comparing hatchery and wild-caught fish are useful to improve selection for aquaculture and restocking programmes. We examined swimming behaviour characteristics in wild captured and domesticated sea bass juveniles before and after eliciting a startle response at 8 different ages and always on naive individuals. We specifically investigated whether domestication impacts juvenile sea bass behaviour and whether the first months of captivity induce behavioural modifications in wild juveniles. An apparatus was designed to mimic a predator attack by presenting a sudden visual and mechanical stimuli simultaneously in 8 arenas where single individuals were placed and video recorded. The reactivity response was evaluated and different swimming...
Tipo: Text Palavras-chave: Domestication; Swimming activity; Restocking; Selection; Coping styles.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00102/21363/19403.pdf
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Genetic differences for behaviour in juveniles from two strains of brown trout suggest an effect of domestication history ArchiMer
Benhaim, David; Guyomard, Rene; Chatain, Beatrice; Quillet, Edwige; Begout, Marie-laure.
Because captivity constitutes a drastic environmental change, domestication is expected to induce a rapid genetic selection for behavioural traits. In this study, we searched for genetic differences in behaviour among brown trout juveniles from two strains differing for their domestication history, i.e. an almost pure native wild Mediterranean population (W) and an Atlantic domesticated strain (D). In order to assess pure genetic differences among strains, males from the two origins were mated with Mediterranean females to produce two experimental crosses (WW and WD). The swimming activity characteristics of individual WW and WD juveniles were compared before and after the application of a stress (light switched off suddenly, followed by a 5-min period of...
Tipo: Text Palavras-chave: Domestication; Genotyping; Microsatellite; Swimming activity; Restocking.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00152/26301/24409.pdf
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Habitat use by native and stocked trout (Salmo trutta L.) in two northeast streams, Portugal IPB - Escola Superior Agrária
Teixeira, Amílcar; Cortes, R.; Oliveira, Daniel.
Habitat use by stocked and native brown trout (Salmo trutta L.) was assessed in two headwater streams of northeastern Portugal. Underwater observations were made during the summer season in three successive years to evaluate the effect of supplemental trout stocking. Multivariate analysis techniques applied to microhabitat use data sets were used to identify the focal elevation (distance of fish from the bottom), total depth and cover as the variables that contribute most to the discrimination between stocked and native trout. Preference curves computed for native and stocked trout of the same age (1+), showed a distinct pattern in their ability to explore the available microhabitat resources. Stocked trout tended to occupy deeper pools (total depth >...
Tipo: Article Palavras-chave: Salmo trutta; Snorkelling; Restocking; Microhabitat; Preference curves.
Ano: 2006 URL: http://hdl.handle.net/10198/998
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Production artificielle de naissain de coquilles Saint-Jacques Pecten maximus (L.). Premiers résultats en rade de Brest ArchiMer
Buestel, Dominique; Cochard, Jean-claude; Dao, Jean-claude; Gerard, Andre.
Artificial production from natural spawners could be a way of getting big quantities of spat of Pecten maximus, ln the method described, larval phase (until a size of 250 microns) occurs in a hatchery, post-Iarval phase (from 250 µ until 3 millimeters) in a nursery, and first growth period directly into the sea (from 2 mm to a size of 25-30 mm), The fifst results obtained, production of several thousand of individuals good enough for reseeding, seem to be transposable to a larger scale.
Tipo: Text Palavras-chave: Restocking; Intermediate culture; Hatchery; Nursery; Pecten maximus; Repeuplement; Prégrossissement; Ecloserie; Nurserie; Pecten maximus.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-6529.pdf
Registros recuperados: 8
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