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| Registros recuperados: 517 | |
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| Vandeputte, Marc. |
| Common carp was the first domesticated fish species and is now a major species in worldwide aquaculture. Although research has generated a considerable body of knowledge about its genetics, genetic improvement programmes are virtually non-existent in this species and only crossbreeding is used in practice. The main reasons are the inefficiency of methods usually effective in other aquaculture species (monosexing, triploidy), and the bad image of selective breeding which is difficult to implement in ponds, and for which reliable genetic parameters were missing until recently. These parameters are now becoming available through the use of parentage assignment with microsatellite markers. However, the question of selective breeding for growth remains far from... |
| Tipo: Text |
Palavras-chave: Selection; Population genetics; Cyprinus carpio; Breeding; Aquaculture. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6563.pdf |
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| Vagner, Marie; Robin, Jean; Zambonino, Jose-luis; Person, Jeannine. |
| The purpose of this study was to investigate the combined effect of the incorporation of vegetable products in diet and temperature on enzymatic pathways for high unsaturated fatty acids (HUFA) desaturation in sea bass larvae. Four replicated groups were fed a low (LH; 0.8% EPA+DHA) or a high (HH; 2.2% EPA+DHA) n-3 HUFA microparticulated diet from mouth opening, six days post-hatching and were reared at 16 or 22 degrees C. The four experimental conditions (LH16, HH16, LH22 and HH22) were tested for 45 days. At the end of the experiment, body weight, total length and biomass were affected by temperature (P<0.001), while biomass as well as fresh body weight was also influenced by diet (P<0.05 and P<0.001 respectively). This always lead to the same... |
| Tipo: Text |
Palavras-chave: Desaturation; HUFA; Dicentrarchus labrax; Delta 6 desaturase; Aquaculture. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2673.pdf |
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| Taris, Nicolas; Baron, S; Sharbel, Tim; Sauvage, Christopher; Boudry, Pierre. |
| The analysis of parentage using microsatellite markers is of increasing importance, notably in aquaculture genetic research where communal rearing of mixed families can be used to reduce unwanted environmental variance. We present here an optimization of parental genotype assessment for larvae or adults of the Pacific oyster, Crassostrea gigas, using a multiplex system of three microsatellite loci. In conjunction with a simple DNA extraction protocol, this method enables high throughput analyses of parentage in C. gigas. Using this method, we successfully determined the parentage of 93% (1224 out of 1318) of the progeny in a factorial cross between 3 females and 10 males. The inability to genotype the remaining 7% was due to DNA degradation of larvae... |
| Tipo: Text |
Palavras-chave: Oysters; Aquaculture; Parental assignment; High throughput; Larval DNA extraction; Multiplex. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-1814.pdf |
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| Kaspar, Vojtech; Hulak, Martin; Kohlmann, Klaus; Vandeputte, Marc; Rodina, Marek; Gela, David; Linhart, Otomar. |
| Sperm competition occurs when sperm from different males compete for fertilization. The aim of this in vitro fertilization study was to compare the competitive success of five males using heterosperm with an equal number of sperm from each male and four different sperm/egg ratios (5,000, 10,000, 20,000 and 100,000 spermatozoa per egg) in order to better understand variations of competitive fertilization. The roles of sperm motility and velocity were studied. Fertilization and hatching rates of the 5 males studied, with 100,000 spermatozoa per egg, were between 23.7-94.8% and 23.7-92.2%, respectively. Sperm velocity and percentage of motile sperm ranged from 85.0 to 137.6 mu m s(-1) and 2.0 to 93.5% at 15 see post sperm activation, respectively. The... |
| Tipo: Text |
Palavras-chave: Paternity assignment; Artificial reproduction; Aquaculture. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-6551.pdf |
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| Barbabé, G.. |
| The production of Juveniles, key of aquaculture, needs for the alimentation of the larvae, to dispose plankton preys, which cannot be supplied by rearing. The collections realised with adapted implements, have led to very positive results In both types of media, situated in the surroundings of Séte : mar shes and oxydation ponds (used for waste water purifying). The most abundant plankton in these two kinds of media are uni-cellular algae, Rotlfera, Copepoda, Daphne (oxydation pont) and Aetemia (marshes). These populations constitute a complete alimentation sequence without an equivalent for the necessities of larvae and juveniles. Our qualitative collections (from 0,2 to 20 kg/h) plankton, dependent on the species) have allowed to rear, without any... |
| Tipo: Text |
Palavras-chave: Collecte zooplancton; Aquaculture; Eaux usées; Zooplankton collection; Aquaculture; Waste waters. |
| Ano: 1979 |
URL: http://archimer.ifremer.fr/doc/00305/41663/40872.pdf |
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| Lazard, Jerome; Rey-valette, Helene; Aubin, Joel; Mathe, Syndhia; Chia, Eduardo; Caruso, Domenico; Mikolasek, Olivier; Blancheton, Jean Paul; Legendre, Marc; Rene, Francois; Levang, Patrice; Slembrouck, Jacques; Morissens, Pierre; Clements, Olivier. |
| Little work dealing with the evaluation of aquaculture system sustainability has so far been undertaken on a global and comparative basis. Moreover, such work is mostly based on very unbalanced approaches in terms of the dimensions of sustainable development that are taken into account. The approach adopted in this article is designed to encompass all the dimensions of sustainability including the institutional one (governance). The taking into account of this latter, in particular, together with the role played by aquaculture in sustainability at the territorial level gives the approach its original and innovative nature. The process of establishing the checklist of sustainability indicators in aquaculture relies on a hierarchical nesting approach which... |
| Tipo: Text |
Palavras-chave: Aquaculture; Indicators; Co-construction; Sustainability. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00245/35598/34151.pdf |
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| Tanguy, Renan; Le Grel, Laurent. |
| After 12 years of a difficult start, the sea bass (Dicentrarchus labrax) breeding projects are multiplying. Faced with the constraints presented by the sites used in the past, farming at sea seems to offer conditions more conducive to the growth and survival of the animals. The zootechnical data from the farm makes it possible to link the rate of growth and the thermal profile of the site. Risks and uncertainties still weigh heavily on aquafarming projects, but solutions such as insurance are helping to improve their economic feasibility. The economic and financial analysis comes up with good overall profitability of the project, even if the duration of the breeding cycle and the necessity to ensure a progressive increase in operating capacity make the... |
| Tipo: Text |
Palavras-chave: Grossissement; Prégrossissement; Loup; Aquaculture; SEM. |
| Ano: 1989 |
URL: http://archimer.ifremer.fr/doc/1989/rapport-2417.pdf |
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| Flassch, Jean-pierre. |
| Featuring innovation could be simpleness in the field application, allowing to account in the best of natural conditions. The new technologies increasing production are usually subordinate to climatic, geogaphic and mainly socio-economic conditions wre they are used, therefore they cannot be always directly tranferred to other countries. Another fact could be pointed out : in high productivity areas the innovations are quite unusual ; the influrence of farmers and the routine practices generally restrict the propagation of new ideas and their application ; on the other hand in the new countries or with a starting prodcution the new techniques get the best chances to be transferred. These last fifteen y the use of synthetic stuff has been one of the... |
| Tipo: Text |
Palavras-chave: Aquaculture; Bivalves; Pregrowing techniques; Growthing techniques. |
| Ano: 1985 |
URL: http://archimer.ifremer.fr/doc/00015/12633/9522.pdf |
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| Begout, Marie-laure; Lagardere, Jean-paul. |
| An experiment was conducted to measure swimming activity of rainbow trout (254.0 +/- 33.7 g) held in outdoor tanks under three culture conditions with stocking density used to generate differences: 27 (Culture Density 1, CD1), 80 (CD2) and 136 kg m(-3) (CD3). Fish were fed dry pellets at 1% of tank biomass from 9h00 to 13h00 with automatic feeders. Using acoustic telemetry, fish positions were monitored every 5 s during 48 h for nine fish (three in each treatment). Swimming behaviour was analysed in terms of trajectories: they varied between (i) holding position (high turning angles), (ii) chaotic trajectories (equal use of all turning angles) and (iii) circular swimming (average turning angle of 60degrees). Space utilisation differed for each culture... |
| Tipo: Text |
Palavras-chave: Rainbow trout; Aquaculture; Swimming activity; Fish welfare; Acoustic telemetry. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/publication-387.pdf |
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| Copp, G. H.; Godard, M. J.; Russell, I. C.; Peeler, E. J.; Gherardi, F.; Tricarico, E.; Miossec, Laurence; Goulletquer, Philippe; Almeida, D.; Britton, J. R.; Vilizzi, L.; Mumford, J.; Williams, C.; Reading, A.; Rees, E. M. A.; Merino-aguirre, R.. |
| Developed for carrying out risk assessments under the European Commission (EC) Council Regulation No 708/2007 concerning the use of alien and locally absent species in aquaculture (ASR), the European Non-native Species in Aquaculture Risk Assessment Scheme (ENSARS) is briefly summarised, and the ‘Organism’ module is applied to the 24 species listed in ASR's Annex IV. Four other ENSARS modules (Infectious Agent, Facility, Pathway, and Socio-economic) were used to assess two case study species (European catfish Silurus glanis L. and red swamp crayfish Procambarus clarkii Girard). No Annex IV species was categorised as low risk, 10 as moderately low risk, 12 as medium risk, two as moderately high risk and none as high risk. The results are discussed and... |
| Tipo: Text |
Palavras-chave: Aquaculture; Biological invasions; Decision support; ENSARS; EU legislation; Risk analysis. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00189/30032/29433.pdf |
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| Boudry, Pierre; Collet, B; Mccombie, Helen; Ernande, Bruno; Morand, B; Heurtebise, Serge; Gerard, Andre. |
| In order to study individual growth variability and its relationship with survival in juvenile Crassostrea gigas, parental oysters were sampled at four sites located along the French Atlantic coast and bred under controlled hatchery conditions. Four groups of larvae were obtained by crossing five males and five females from each of the four sites, and a fifth group by crossing these 20 males and 20 females together in a pool. Larvae were reared under conditions allowing the maintenance of a maximum variability of size and gave five experimental groups. Oysters were individually monitored for growth and survival from 3 to 10 months after fertilization. The individual growth performances were relatively stable over time and no noticeable compensation for... |
| Tipo: Text |
Palavras-chave: Survival; Oysters; Growth; Crassostrea gigas; Aquaculture. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/publication-467.pdf |
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| Le Berre, Jerome. |
| Introduction: This document is the End of Second Year internship report for Rennes University 1's Senior Math and Computer Science Modelisation Professional diploma. This two month internship was completed at the Brest IFREMER center at the Coastal Ecology department. IFREMER participates, in the course of its institutional missions, in observation and coastal sea surveillance, in order to improve on the knowledge, protection methods and restoration of the marine environment. Marine phytoplankton proliferation is an important study subject because of its potential cause for nuisance, for men, consumers of sea products as well as for the ecosystem. During Spring and Summer, shellfish become invariably unsuitable for consumption due to toxins produced by... |
| Tipo: Text |
Palavras-chave: Aquaculture; Growth; Phytoplanctonic algae; Mathematical models. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/rapport-1770.pdf |
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| Registros recuperados: 517 | |
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