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14 results on '"Blanc, Marie-Odile"'

3. Otolith morphogenesis during the early life stages of fish is temperature‐dependent: Validation by experimental approach applied to European seabass (Dicentrarchus labrax).

Author

Mahé, Kélig, Clota, Frédéric, Blanc, Marie Odile, Bled Defruit, Geoffrey, Chatain, Béatrice, de Pontual, Hélène, Amara, Rachid, and Ernande, Bruno

Subjects
OTOLITHS, EUROPEAN seabass, FISH populations, IDENTIFICATION of fishes, MORPHOGENESIS, WATER temperature
Abstract

Otolith shape is often used as a tool in fish stock identification. The goal of this study was to experimentally assess the influence of changing temperature and ontogenic evolution on the shape component of the European seabass (Dicentrarchus labrax) otolith during early‐life stages. A total of 1079 individuals were reared in a water temperature of 16°C up to 232 days post hatch (dph). During this experiment, several specimens were transferred into tanks with a water temperature of 21°C to obtain at the end of this study four different temperature treatments, each with varying ratios between the number of days at 16 and 21°C. To evaluate the otolith morphogenesis, samples were examined at 43, 72, 86 and 100 dph. The evolution of normalized otolith shape from hatching up to 100 dph showed that there were two main successive changes. First, faster growth in the antero‐posterior axis than in the dorso‐ventral axis changed the circular‐shaped otolith from that observed at hatching and, second, increasing the complexity relating to the area between the rostrum and the anti‐rostrum. To test the effect of changing temperature, growing degree‐day was used in three linear mixed‐effect models. Otolith morphogenesis was positively correlated to growing degree‐day, but was also dependent on temperature level. Otolith shape is influenced by environmental factors, particularly temperature, making it an efficient tool for fish stock identification. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Phenotypic characterization of the three main natural populations of seabass (Dicentrarchus labrax) on growth and quality traits performances

Author

Vergnet, Alain, Clota, Frédéric, Denis, Edoh, Ruelle, François, Blanc, Marie-Odile, Lallement, Stéphane, Leitwein, Maeva, Vandeputte, Marc, Allal, François, MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Génétique Animale et Biologie Intégrative (GABI), and Université Paris-Saclay-AgroParisTech-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)

Subjects
[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies, [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery, [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

6. Late high temperature promotes fast growth and female differentiation in European sea bass Dicentrarchus labrax, while early photoperiod has no effect on either trait

Author

Clota, Frédéric, Geffroy, Benjamin, Vergnet, Alain, Blanc, Marie-Odile, Lallement, Stéphane, Goikoetxea, Alexander, Leitwein, Maeva, Allal, François, Vandeputte, Marc, MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Génétique Animale et Biologie Intégrative (GABI), Université Paris-Saclay-AgroParisTech-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)

Subjects
[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies, [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery, [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

7. Genomic prediction and genotype-by-temperature interaction of sex tendency in European sea bass

Author

Allal, François, Besson, Mathieu, Sadoul, Bastien, Ruelle, François, Pegart, M., Blanc, Marie-Odile, Vergnet, A., Clota, Frederic, Sánchez Baizán, Núria, Piferrer, Francesc, Vandeputte, Marc, Geffroy, Benjamin, MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut de Recherche pour le Développement (IRD), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Institute of Marine Sciences / Institut de Ciències del Mar [Barcelona] (ICM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Génétique Animale et Biologie Intégrative (GABI), Université Paris-Saclay-AgroParisTech-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and European Commission

Subjects
[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies, [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery, [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny, ComputingMilieux_MISCELLANEOUS
Abstract

Aquaculture Europe, Oceans opportunity, 4-7 October 2021, Madeira, Portugal.-- 2 pages, 1 figure, European sea bass (Dicentrarchus labrax) is an important European aquaculture species. Females, performing better than males with later maturation and larger size, are preferred. Unfortunately, in aquaculture conditions, the sex-ratio is typically biased towards males. Thus, deciphering the sex determinism system and finding routes for controlling the sexratio of this species has been a long-lasting challenge to support sea bass production and selective breeding programmes. A polygenic threshold sex determination system was demonstrated (Vandeputte et al. 2007), where the genetic sex tendency is influenced by larval rearing temperature to determine the phenotypic sex (Piferrer et al, 2005). In this study, we applied two thermal treatments during early larval stage, a low temperature protocol (16°C, LT), known to favour more balanced sex-ratios, and a high temperature masculinizing protocol (21°C, HT). We used genome-wide SNP genotypes to estimate the genetic parameters and genotype-by-temperature interaction of sex tendency in European sea bass, This work was partially supported by the 3S - Seabass Sex and Stress project (n° 4320175237) funded by the French Government and the European Union (EMFF, European Maritime and Fisheries Fund) at the “Appels à projets Innovants” managed by the France Agrimer Office, and the European Union’s 7th Framework Programme under Grant Agreement 652831 (AQUAEXCEL2020, Transnational Access project AE040073)

Published
2021

14. Sex determination of the European sea bass : deciphering the role of temperature over the whole larval period to enhance female production

Author

Geffroy, Benjamin, Vandeputte, Marc, Blanc, Marie‐Odile, Clota, Frédéric, Sadoul, Bastien, Ruelle, François, Chatain, Béatrice, Cousin, Xavier, Begout, Marie Laure, MARine Biodiversity Exploitation and Conservation (UMR MARBEC), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 3AS Station Expérimentale d'Aquaculture Ifremer, Chemin de Maguelone, 34250, Palavas-les-Flots, France, and Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)

Subjects
[SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, [SDV.SA.SPA]Life Sciences [q-bio]/Agricultural sciences/Animal production studies, [SDV.SA.STP]Life Sciences [q-bio]/Agricultural sciences/Sciences and technics of fishery, [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

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