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| Registros recuperados: 15 | |
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| Roussel, Sabine; Bisch, T; Lachambre, S; Boudry, Pierre; Gervois, Jl; Lambert, Christophe; Huchette, S; Day, R. |
| Domestication of Haliotis tuberculata has only recently begun. During the process, we expect that behavioural and physiological traits may evolve to become more adapted to their captive environment. These modifications may result from intentional selection of production traits or unconscious and unintentional selection due to conditions experienced in the farm environment. To study this process at the earliest stage, the progeny of 3 different broodstocks obtained from wild parents, selected farmed abalone and randomly sampled farmed abalone, were studied. After rearing for 16 mo in separate tanks, offspring from the 3 progenies were placed together in sea cages at the same density. After 3 yr, behavioural traits were studied, and the immune status after a... |
| Tipo: Text |
Palavras-chave: Predation; Hiding behaviour; Haliotis tuberculata; Domestication; Selection; Captive; Abalone. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00487/59841/62989.pdf |
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| Dubief, Bruno; Nunes, Flavia; Basuyaux, Olivier; Paillard, Christine. |
| Since 1997, populations of the European abalone Haliotis tuberculata suffer mass mortalities attributed to the bacterium Vibrio harveyi. These mortalities occur at the spawning season, when the abalone immune system is depressed, and when temperatures exceed 17 °C, leading to favorable conditions for V. harveyi proliferation. In order to identify mechanisms of disease resistance, experimental successive infections were carried out on two geographically distinct populations: one that has suffered recurrent mortalities (Saint-Malo) and one that has not been impacted by the disease (Molène). Furthermore, abalone surviving these two successive bacterial challenges and uninfected abalone were used for several post-infection analyses. The Saint-Malo population... |
| Tipo: Text |
Palavras-chave: Immunity; Hemocyte; Abalone; Disease; Extracellular products; Immune priming; Vibrio harveyi; Flow cytometry; Resistance; Phagocytosis; Bacterial growth; QPCR; Gill. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00357/46800/46667.pdf |
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| Roussel, Sabine; Caralp, Claire; Leblanc, Catherine; Le Grand, Fabienne; Stiger-pouvreau, Valerie; Coulombet, Céline; Le Goïc, Nelly; Huchette, Sylvain. |
| The commercial culture of Haliotis tuberculata has recently started in Europe. As abalone is herbivorous, the use of local collected algae as feed may appear advantageous. The nutritional value of eight monospecific seaweed diets was studied using Palmaria palmata (Rhodophyta), filamentous algae, mainly Gracilaria sp. (Rhodophyta), Enteromorpha sp. and Ulva lactuca (Chlorophyta), together with Saccharina latissima, Saccorhiza polyschides, Laminaria digitata and Laminaria hyperborea (Ochrophyta, Phaeophyceae) and a mixed macroalgal diet. An integrative approach consisted in monitoring the seasonal composition changes of these algae in terms of protein, lipid, soluble carbohydrate, fatty acid and amino-acid contents, and to relate it to seasonal growth and... |
| Tipo: Text |
Palavras-chave: Abalone; Algae; Reproduction; Growth; Protein. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00509/62066/66246.pdf |
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| Mazurie, Joseph; Thebault, Anne; Le Mao, Patrick; Veron, Gerard; Tige, Gilbert; Richard, Olivier. |
| Des mortalités anormales d'ormeaux ont été signalées en Bretagne nord (départements d'Ille et Vilaine et Côtes d'Armor) à partir du mois d'août 1998 et porté atteinte à la pêcherie professionnelle de cette zone. Des mortalités de même type avaient été signalées en Bretagne Sud, l'année précédente. Les mortalités de 1998 ont épargné le secteur plus à l'ouest (le Finistère) et plus à l'est (la Normandie). Une estimation précise n'a pas été entreprise, mais les pertes signalées par endroits dépassent 50% du stock. Les ormeaux atteints, de toutes tailles, ne présentent pas de symptôme particulier. Les analyses histologiques réalisées en priorité n'ont pas révélé d'agent infectieux. Toutefois, dans le doute et devant le caractère évolutif du phénomène, une... |
| Tipo: Text |
Palavras-chave: Ormeau; Mortalité; Côtes d'Armor; Ille-et-Vilaine; Abalone; Mortality. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00105/21666/19244.pdf |
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| Lachambre, Sébastien. |
| In the context of an increasing demand and a declining supply from fisheries, worldwide aquaculture production of abalone has greatly increased in the last decades. Selective breeding has been initiated to improve growth in major abalone species. In France, the abalone production was initiated 30 years ago and struggles to develop. This CIFRE PhD co-financed by France Haliotis, the only French hatchery in activity, was initiated to study early domestication process of farmed abalone population and to provide knowledge required to design a selective breeding program adapted to this company. Wild and farmed populations were compared, showing that, until 2013, farmed and wild abalone presented similar performances. However, lower physiological and behavioural... |
| Tipo: Text |
Palavras-chave: Sélection génétique; Ormeaux; Croissance; Physiologie; Comportement; Selective Breeding; Abalone; Growth; Physiology; Behaviour. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00441/55231/56711.pdf |
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| Diggles, Bk; Nichol, J; Hine, Pm; Wakefield, S; Cochennec, Nathalie; Roberts, Rd; Friedman, Cs. |
| Mortalities among juvenile paua Haliotis iris Martyn 1784 in a commercial culture facility were reported in April 2000. Histology of moribund paua showed heavy systemic infections of a uni- to multi-nucleate stage of a novel organism later confirmed by transmission electron microscopy (TEM) and molecular studies to be a haplosporidian. Multinucleate plasmodia up to 25 μm diameter with up to 17 nuclei were detectable in wet preparations of hemolymph from heavily infected paua. The presence of the haplosporidian in the affected facility was associated with mortalities of slow growing 'runt' paua during the summer months. Total mortalities in affected raceways 6 mo after mortalities began were between 82.5 and 90%. Heavily infected paua exhibited... |
| Tipo: Text |
Palavras-chave: Haplosporidia; Abalone; Aquaculture; Pathology; Disease; New Zealand. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-2783.pdf |
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| Gobet, Angelique; Mest, Laetitia; Perennou, Morgan; Dittami, Simon M.; Caralp, Claire; Coulombet, Celine; Huchette, Sylvain; Roussel, Sabine; Michel, Gurvan; Leblanc, Catherine. |
| Background: Holobionts have a digestive microbiota with catabolic abilities allowing the degradation of complex dietary compounds for the host. In terrestrial herbivores, the digestive microbiota is known to degrade complex polysaccharides from land plants while in marine herbivores, the digestive microbiota is poorly characterized. Most of the latter are generalists and consume red, green, and brown macroalgae, three distinct lineages characterized by a specific composition in complex polysaccharides, which represent half of their biomass. Subsequently, each macroalga features a specific epiphytic microbiota, and the digestive microbiota of marine herbivores is expected to vary with a monospecific algal diet. We investigated the effect of four... |
| Tipo: Text |
Palavras-chave: Microbe-host interactions; Digestive microbiota; Abalone; Macroalgae; Holobiont. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00489/60071/63368.pdf |
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| Harney, Ewan; Lachambre, Sebastien; Roussel, Sabine; Huchette, Sylvain; Enez, Florian; Morvezen, Romain; Haffray, Pierrick; Boudry, Pierre. |
| Selective breeding strategies require pedigree information over generations, but many species produced in aquaculture are too small to be physically tagged at early stages. Consequently, maintaining a sufficient number of separate families is often needed but costly and logistically difficult. Alternatively, parentage assignment can be obtained using DNA markers. We developed a panel of single nucleotide polymorphism (SNP) markers for the European abalone Haliotis tuberculata using an existing transcriptomic resource. An initial set of 2,176,887 SNPs was filtered to select 500 for high throughput genotyping. Of these, 298 SNPs were amplified in at least 90% of our H. tuberculata samples, consisting of a mixed family cohort (945 offspring) generated by... |
| Tipo: Text |
Palavras-chave: Abalone; Parentage assignment; Pedigree; Selective breeding; Transcriptome; SNP. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00429/54061/55396.pdf |
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| Arzul, Isabelle; Corbeil, Serge; Morga, Benjamin; Renault, Tristan. |
| Although a wide range of viruses have been reported in marine molluscs, most of these reports rely on ultrastructural examination and few of these viruses have been fully characterized. The lack of marine mollusc cell lines restricts virus isolation capacities and subsequent characterization works. Our current knowledge is mostly restricted to viruses affecting farmed species such as oysters Crassostrea gigas, abalone Haliotis diversicolor supertexta or the scallop Chlamys farreri. Molecular approaches which are needed to identify virus affiliation have been carried out for a small number of viruses, most of them belonging to the Herpesviridae and birnaviridae families. These last years, the use of New Generation Sequencing approach has allowed increasing... |
| Tipo: Text |
Palavras-chave: Molluscs; Viruses; Diseases; Herpesviridae; Bivalve; Abalone. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00371/48206/48319.pdf |
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| Registros recuperados: 15 | |
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