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3. Xenotransplantation of European Eel (Anguilla anguilla) Spermatogonia in Zebrafish (Danio rerio) and European Sea Bass (Dicentrarchus labrax).

Author

Blanes-García, Marta, Marinović, Zoran, Morini, Marina, Vergnet, Alain, Horváth, Ákos, and Asturiano, Juan F.

Subjects
ANGUILLA anguilla, ZEBRA danio, CELL migration, STEM cells, APPROPRIATE technology, GONADS, BRACHYDANIO
Abstract

The European eel encounters challenges in achieving sexual maturation in captivity, which has been a concern for researchers. This study explores surrogate broodstock technology as an alternative approach for eel production. The present study aimed to evaluate zebrafish and European sea bass as potential recipients for European eel spermatogonia transplantation, given the abundance of eel type A spermatogonia (SPGA). Immature European eel testes were dissected and maintained at 4 °C or cryopreserved. SPGA were obtained by dissociation of fresh or post-thawed tissue, employing an enzymatic solution, and then labelled with fluorescent membrane marker PKH26. SPGA from fresh tissue were transplanted into wild-type zebrafish larvae and triploid European sea bass larvae, while SPGA from cryopreserved testis were transplanted into vasa::egfp transgenic zebrafish larvae. One-and-a-half months post-transplantation (mpt), fluorescent donor cells were not detected in the gonads of zebrafish or European sea bass. Molecular qPCR analyses at 1.5 or 6 mpt did not reveal European eel-specific gene expression in the gonads of any transplanted fish. The findings suggest that the gonadal microenvironments of zebrafish and European sea bass are unsuitable for the development of European eel spermatogonia, highlighting distinctive spermatogonial stem cell migration mechanisms within teleost species [ABSTRACT FROM AUTHOR]

Published
2024
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5. Genetic relationship between koi herpesvirus disease resistance and production traits inferred from sibling performance in Amur mirror carp

Author

Zhao, Jinfeng, Prchal, Martin, Palaiokostas, Christos, Houston, Ross D., Kause, Antti, Vandeputte, Marc, Vergnet, Alain, Bugeon, Jérôme, Bestin, Anastasia, Veselý, Tomáš, Pokorová, Dagmar, Piačková, Veronika, Pojezdal, Lubomír, Genestout, Lucie, Gela, David, Kroupová, Hana K., and Kocour, Martin

Published
2020
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7. Changes in transcriptomic and behavioural traits in activity and ventilation rates associated with divergent individual feed efficiency in gilthead sea bream (Sparus aurata)

Author

Calduch-Giner, Josep, primary, Rosell-Moll, Enrique, additional, Besson, Mathieu, additional, Vergnet, Alain, additional, Bruant, Jean-Sébastien, additional, Clota, Frédéric, additional, Holhorea, Paul George, additional, Allal, François, additional, Vandeputte, Marc, additional, and Pérez-Sánchez, Jaume, additional

Published
2023
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9. Changes in transcriptomic and behavioural traits in activity and ventilation rates associated with divergent individual feed efficiency in gilthead sea bream (Sparus aurata)

Author

Calduch-giner, Josep, Rosell-moll, Enrique, Besson, Mathieu, Vergnet, Alain, Bruant, Jean-sébastien, Clota, Frederic, Holhorea, Paul George, Allal, Francois, Vandeputte, Marc, Pérez-sánchez, Jaume, Calduch-giner, Josep, Rosell-moll, Enrique, Besson, Mathieu, Vergnet, Alain, Bruant, Jean-sébastien, Clota, Frederic, Holhorea, Paul George, Allal, Francois, Vandeputte, Marc, and Pérez-sánchez, Jaume

Abstract

Feed conversion ratio (FCR) is an important trait to target in fish breeding programs, and the aim of the present study is to underline how the genetic improvement of FCR in gilthead sea bream (Sparus aurata) drives to changes in transcriptional and behavioural patterns. Groups of fish with high (FCR+) and low (FCR-) individual FCR were established at the juvenile stage (161–315 dph) by rearing isolated fish on a restricted ration. Fish were then grouped on the basis of their individual FCR and they grew up until behavioural monitoring and gene expression analyses were done at 420 dph. The AEFishBIT datalogger (externally attached to operculum) was used for simultaneous measurements of physical activity and ventilation rates. This allowed discrimination of FCR+ and FCR- groups according to their different behaviour and energy partitioning for growth and locomotor activity. Gene expression profiling of liver and white muscle was made using customized PCR-arrays of 44 and 29 genes, respectively. Up to 15 genes were differentially expressed in liver and muscle tissues highlighting a different metabolic scope of FCR+ and FCR- fish. Hepatic gene expression profile of FCR- fish displayed a lower lipogenic activity that was concurrent with a down-regulation of markers of mitochondrial activity and oxidative stress, as well as a reallocation of body fat depots with an enhanced flux of lipids towards skeletal muscle. Muscle gene expression profile of FCR- fish matched with stimulatory and inhibitory growth signals, and an activation of energy sensors and antioxidant defence as part of the operating mechanisms for a more efficient muscle growth. These new insights contribute to phenotype the genetically mediated differences in fish FCR thanks to the combination of transcriptomic and behavioural approaches that contribute to better understand the mechanisms involved in a reliable FCR improvement of farmed gilthead sea bream.

Published
2023
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10. Changes in transcriptomic and behavioural traits in activity and ventilation rates associated with divergent individual feed efficiency in gilthead sea bream (Sparus aurata)

Author

European Commission, Calduch-Giner, Josep A., Rosell-Moll, Enrique, Besson, Mathieu, Vergnet, Alain, Bruant, Jean-Sébastien, Clota, Frédéric, Holhorea, Paul George, Allal, François, Vandeputte, Marc, Pérez-Sánchez, Jaume, European Commission, Calduch-Giner, Josep A., Rosell-Moll, Enrique, Besson, Mathieu, Vergnet, Alain, Bruant, Jean-Sébastien, Clota, Frédéric, Holhorea, Paul George, Allal, François, Vandeputte, Marc, and Pérez-Sánchez, Jaume

Abstract

Feed conversion ratio (FCR) is an important trait to target in fish breeding programs, and the aim of the present study is to underline how the genetic improvement of FCR in gilthead sea bream (Sparus aurata) drives to changes in transcriptional and behavioural patterns. Groups of fish with high (FCR+) and low (FCR-) individual FCR were established at the juvenile stage (161–315 dph) by rearing isolated fish on a restricted ration. Fish were then grouped on the basis of their individual FCR and they grew up until behavioural monitoring and gene expression analyses were done at 420 dph. The AEFishBIT datalogger (externally attached to operculum) was used for simultaneous measurements of physical activity and ventilation rates. This allowed discrimination of FCR+ and FCR- groups according to their different behaviour and energy partitioning for growth and locomotor activity. Gene expression profiling of liver and white muscle was made using customized PCR-arrays of 44 and 29 genes, respectively. Up to 15 genes were differentially expressed in liver and muscle tissues highlighting a different metabolic scope of FCR+ and FCR- fish. Hepatic gene expression profile of FCR- fish displayed a lower lipogenic activity that was concurrent with a down-regulation of markers of mitochondrial activity and oxidative stress, as well as a reallocation of body fat depots with an enhanced flux of lipids towards skeletal muscle. Muscle gene expression profile of FCR- fish matched with stimulatory and inhibitory growth signals, and an activation of energy sensors and antioxidant defence as part of the operating mechanisms for a more efficient muscle growth. These new insights contribute to phenotype the genetically mediated differences in fish FCR thanks to the combination of transcriptomic and behavioural approaches that contribute to better understand the mechanisms involved in a reliable FCR improvement of farmed gilthead sea bream.

Published
2023

11. In a marine teleost, the significance of oxygen supply for acute thermal tolerance depends upon the context and the endpoint used

Author

Nati, Julie J. H., Blasco, Felipe R., Rodde, Charles, Vergnet, Alain, Allal, Francois, Vandeputte, Marc, Mckenzie, David, Nati, Julie J. H., Blasco, Felipe R., Rodde, Charles, Vergnet, Alain, Allal, Francois, Vandeputte, Marc, and Mckenzie, David

Abstract

Eight juvenile European seabass were exposed to two thermal ramping protocols with different levels of aerobic activity and tolerance endpoint: the critical thermal maximum for swimming (CTSmax) while exercising aerobically until fatigue, and the critical thermal maximum (CTmax) under static conditions until loss of equilibrium (LOE). In the CTSmax, warming caused a profound increase in oxygen uptake rate (M˙O2) culminating in a gait transition, from steady aerobic towards unsteady anaerobic swimming, then fatigue at 30.3±0.4°C (mean±SE). Gait transition and fatigue presumably indicate an oxygen limitation, an inability to meet the combined demands of swimming plus warming. The CTmax also elicited an increase in M˙O2, culminating in LOE at 34.0±0.4°C, significantly warmer than fatigue at CTSmax. The maximum M˙O2 achieved in the CTmax was, however, less than 30% of that achieved in the CTSmax. Therefore, the static CTmax did not exploit full cardiorespiratory capacity for oxygen supply, indicating that LOE was not caused by systemic oxygen limitation. Consequently, systemic oxygen supply can be significant for tolerance of acute warming in seabass but this depends upon the physiological context and the endpoint used.

Published
2023
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15. Potential for genomic selection on feed efficiency in gilthead sea bream (Sparus aurata), based on individual feed conversion ratio, carcass and lipid traits

Author

Besson, Mathieu, Rombout, Nicky, Salou, Germain, Vergnet, Alain, Cariou, Sophie, Bruant, Jean-sébastien, Izquierdo, Marisol, Bestin, Anastasia, Clota, Frederic, Haffray, Pierrick, Allal, Francois, Vandeputte, Marc, Besson, Mathieu, Rombout, Nicky, Salou, Germain, Vergnet, Alain, Cariou, Sophie, Bruant, Jean-sébastien, Izquierdo, Marisol, Bestin, Anastasia, Clota, Frederic, Haffray, Pierrick, Allal, Francois, and Vandeputte, Marc

Abstract

Genetic improvement of feed efficiency is key to improve the economic and environmental sustainability of fish farming. However, it requires individual phenotypes of feed efficiency, which are difficult if not impossible to obtain when fish are reared in tanks or cages. Here, we applied and validated on gilthead sea bream a method to evaluate individual feed efficiency based on individual rearing of fish in aquariums under restricted feeding. We collected individual phenotypes of feed efficiency in aquariums on 538 sea bream (average weight = 54.50 g). Based on these individual phenotypes, fish (average weight = 174.6 g) were reared in groups of divergent phenotypes (high or low feed efficiency), validating that individual feed efficiency had an impact on group feed efficiency at a later stage. All 538 fish, their parents as well as 794 sibs reared in cages in a production environment, were genotyped on a 57k SNP array to estimate genomic heritability and correlations between traits. We showed that feed efficiency was heritable but did not find significant associated QTLs. We also showed that feed efficiency was negatively genetically correlated to viscera yield, indicating that the most efficient fish had less viscera than the least efficient ones. Altogether, these results support that measuring individual feed efficiency in aquariums under restricted feeding may be used as a reliable phenotyping method to genetically improve feed efficiency, despite the bias intrinsically linked to individual rearing.

Published
2022
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16. Potential for genomic selection on feed efficiency in gilthead sea bream (Sparus aurata), based on individual feed conversion ratio, carcass and lipid traits

Author

Besson, Mathieu, primary, Rombout, Nicky, additional, Salou, Germain, additional, Vergnet, Alain, additional, Cariou, Sophie, additional, Bruant, Jean-Sébastien, additional, Izquierdo, Marisol, additional, Bestin, Anastasia, additional, Clota, Frédéric, additional, Haffray, Pierrick, additional, Allal, François, additional, and Vandeputte, Marc, additional

Published
2022
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18. Phenotypic and genomic correlations between feed efficiency and metabolic traits in European sea bass

Author

Besson, Mathieu, Mckenzie, David J, Nati, Julie J.H, Germain, Salou, Vergnet, Alain, Brunier, Joseph, Bajek, Aline, Vandeputte, Marc, Allal, François, Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), 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), Ecloserie Marine de Gravelines, Aquanord, 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

19. 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

20. 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

23. Sex dimorphism in European sea bass (Dicentrarchus labrax L.): New insights into sex-related growth patterns during very early life stages

Author

Faggion, Sara, Vandeputte, Marc, Vergnet, Alain, Clota, Frederic, Blanc, Marie-odile, Sanchez, Pierre, Ruelle, Francois, Allal, Francois, Faggion, Sara, Vandeputte, Marc, Vergnet, Alain, Clota, Frederic, Blanc, Marie-odile, Sanchez, Pierre, Ruelle, Francois, and Allal, Francois

Abstract

The European sea bass (Dicentrarchus labrax) exhibits female-biased sexual size dimorphism (SSD) early in development. New tagging techniques provide the opportunity to monitor individual sex-related growth during the post-larval and juvenile stages. We produced an experimental population through artificial fertilization and followed a rearing-temperature protocol (~16°C from hatching to 112 days post-hatching, dph; ~20°C from 117 to 358 dph) targeting a roughly balanced sex ratio. The fish were tagged with microchips between 61 and 96 dph in five tagging trials of 50 fish each; individual standard length (SL) was recorded through repeated biometric measurements performed between 83 to 110 dph via image analyses. Body weight (BW) was modelled using the traits measured on the digital pictures (i.e. area, perimeter and volume). At 117 dph, the fish were tagged with microtags and regularly measured for SL and BW until 335 dph. The experiment ended at 358 dph with the sexing of the fish. The sex-ratio at the end of the experiment was significantly in favor of the females (65.6% vs. 34.4%). The females were significantly longer and heavier than the males from 103 dph (~30 mm SL, ~0.44 g BW) to 165 dph, but the modeling of the growth curves suggests that differences in size already existed at 83 dph. A significant difference in the daily growth coefficient (DGC) was observed only between 96 and 103 dph, suggesting a physiological or biological change occurring during this period. The female-biased SSD pattern in European sea bass is thus strongly influenced by very early growth differences between sexes, as already shown in previous studies, and in any case long before gonadal sex differentiation has been started, and thus probably before sex has been determined. This leads to the hypothesis that early growth might be a cause rather than a consequence of sex differentiation in sea bass.

Published
2021
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24. Different survival of three populations of European sea bass (Dicentrarchus labrax) following challenge with two variants of nervous necrosis virus (NNV)

Author

Barsøe, Sofie, Allal, Francois, Vergnet, Alain, Vandeputte, Marc, Olesen, Niels Jørgen, Schmidt, Jacob Günther, Larsen, Cathrine Agnete, Cuenca, Argelia, Vendramin, Niccolò, Barsøe, Sofie, Allal, Francois, Vergnet, Alain, Vandeputte, Marc, Olesen, Niels Jørgen, Schmidt, Jacob Günther, Larsen, Cathrine Agnete, Cuenca, Argelia, and Vendramin, Niccolò

Abstract

Viral Nervous Necrosis (VNN, also called viral encephalo- and retinopathy (VER)), is a widespread disease of marine aquaculture caused by betanodavirus (or nervous necrosis virus - NNV), a segmented positive sense RNA virus, member of the nodaviridae family. VNN affects predominantly marine fish and cause significant losses to the Mediterranean fish farming industry, including the production of European sea bass (Dicentrarchus labrax). Of the four circulating genotypes of betanodavirus, red-spotted grouper NNV (RGNNV) and the reassortant genotype red-spotted grouper/striped jack NNV (RG/SJNNV) are most prevalent in the Mediterranean. Inheritable resistance against VNN has been detected in sea bass, and selective breeding could be a mean to limit this untreatable disease. In the current study, we compare resistance to disease among three populations from the Atlantic Ocean (AT), Eastern Mediterranean (EM) and Western Mediterranean (WM), by challenge trials using both a highly pathogenic isolate of RGNNV and a lower pathogenic reassortant isolate of RG/SJNNV. The survival of the three populations were modelled with a logistic regression, and the odds ratio (OR) of surviving was calculated. The challenge with RG/SJNNV reduced the odds of surviving three-fold (OR = 0.29 [0.07-0.87]), whereas the challenge with RGNNV reduced the odds of surviving 100-fold (OR = 0.01 [0.00-0.03]). Overall, the EM population had 3.32 (1.92–5.86) times higher odds of surviving the challenge than the AT and WM stocks. All survivors were harboring viral RNA in the brain, as demonstrated by RT-qPCR. However, viral RNA levels were in average lower in survivors from the EM population in both challenges, though only significantly lower in the challenge with RG/SJNNV (p < 0.01). The survival results combined with the RT-qPCR results indicate that the EM sea bass population has a natural resistance to disease caused by RGNNV, possibly associated with limited viral entry into and/or replication in t

Published
2021
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27. Different survival of three populations of European sea bass (Dicentrarchus labrax) following challenge with two variants of nervous necrosis virus (NNV)

Author

Olesen, Niels Jørgen, Schmidt, Jacob Günther, Larsen, Cathrine Agnete, Barsøe, Sofie, Allal, François, Vergnet, Alain, Vandeputte, Marc, Olesen, Niels, Schmidt, Jacob, Larsen, Cathrine, Cuenca, Argelia, Vendramin, Niccolò, National Institute for Aquatic Resources, Technical Universtity of Denmark, 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), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), European Project: 652831, 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), Université Paris-Saclay-AgroParisTech-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Technical University of Denmark [Lyngby] (DTU)

Subjects
Fish farming, Population, Betanodavirus, Sea bass, Viral enchephalo- and retinopathy, [SDV.SA.ZOO]Life Sciences [q-bio]/Agricultural sciences/Zootechny, Neurological infection, Aquatic Science, Biology, lcsh:Aquaculture. Fisheries. Angling, Virus, 03 medical and health sciences, Genetic resistance, Grouper, 14. Life underwater, SDG 14 - Life Below Water, education, 030304 developmental biology, Viral enchephalo-and retinopathy, lcsh:SH1-691, 0303 health sciences, education.field_of_study, Host-pathogen interaction, 04 agricultural and veterinary sciences, biology.organism_classification, Virology, [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, 040102 fisheries, 0401 agriculture, forestry, and fisheries, Animal Science and Zoology, Dicentrarchus, Nervous necrosis virus, Nodaviridae
Abstract

International audience; Viral Nervous Necrosis (VNN, also called viral encephalo- and retinopathy (VER)), is a widespread disease of marine aquaculture caused by betanodavirus (or nervous necrosis virus - NNV), a segmented positive sense RNA virus, member of the nodaviridae family. VNN affects predominantly marine fish and cause significant losses to the Mediterranean fish farming industry, including the production of European sea bass (Dicentrarchus labrax). Of the four circulating genotypes of betanodavirus, red-spotted grouper NNV (RGNNV) and the reassortant geno-type red-spotted grouper/striped jack NNV (RG/SJNNV) are most prevalent in the Mediterranean. Inheritable resistance against VNN has been detected in sea bass, and selective breeding could be a mean to limit this untreatable disease. In the current study, we compare resistance to disease among three populations from the Atlantic Ocean (AT), Eastern Mediterranean (EM) and Western Mediterranean (WM), by challenge trials using both a highly pathogenic isolate of RGNNV and a lower pathogenic reassortant isolate of RG/SJNNV. The sur-vival of the three populations were modelled with a logistic regression, and the odds ratio (OR) of surviving was calculated. The challenge with RG/SJNNV reduced the odds of surviving three-fold (OR =0.29 [0.07-0.87]), whereas the challenge with RGNNV reduced the odds of surviving 100-fold (OR =0.01 [0.00-0.03]). Overall, the EM population had 3.32 (1.92–5.86) times higher odds of surviving the challenge than the AT and WM stocks. All survivors were harboring viral RNA in the brain, as demonstrated by RT-qPCR. However, viral RNA levels were in average lower in survivors from the EM population in both challenges, though only significantly lower in the challenge with RG/SJNNV (p

Published
2021

32. Genome-wide association studies for resistance to viral nervous necrosis in three populations of European sea bass (Dicentrarchus labrax) using a novel 57k SNP array DlabChip

Author

Griot, Ronan, primary, Allal, François, additional, Phocas, Florence, additional, Brard-Fudulea, Sophie, additional, Morvezen, Romain, additional, Bestin, Anastasia, additional, Haffray, Pierrick, additional, François, Yoannah, additional, Morin, Thierry, additional, Poncet, Charles, additional, Vergnet, Alain, additional, Cariou, Sophie, additional, Brunier, Joseph, additional, Bruant, Jean-Sébastien, additional, Peyrou, Bruno, additional, Gagnaire, Pierre-Alexandre, additional, and Vandeputte, Marc, additional

Published
2021
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33. Population, Temperature and Feeding Rate Effects on Individual Feed Efficiency in European Sea Bass (Dicentrarchus labrax)

Author

Rodde, Charles, Vandeputte, Marc, Allal, Francois, Besson, Mathieu, Clota, Frederic, Vergnet, Alain, Benzie, John A. H., De Verdal, Hugues, Rodde, Charles, Vandeputte, Marc, Allal, Francois, Besson, Mathieu, Clota, Frederic, Vergnet, Alain, Benzie, John A. H., and De Verdal, Hugues

Abstract

Using breeding programs to improve feed efficiency, the ratio between fish body weight gain (BWG) and feed intake (FI), could increase aquaculture sustainability through reduced feed costs and environmental impact. To this end, individual phenotypic information is required. Individual FI can be measured by isolating each fish. Under these conditions, restricting the feeding rate has proved relevant to improve feed efficiency indirectly by selecting faster-growing animals. Moreover, a restricted feeding rate reduces the work load of collecting uneaten pellets after each meal. The approach assumes the most efficient fish at high and low feeding rates are the same, but this assumption remains untested. In European sea bass (Dicentrarchus labrax), feed efficiency is likely to be impacted also by population, temperature, and their interaction, as already demonstrated for growth in this species. To investigate these issues, 200 European sea bass from three wild populations, Atlantic (AT), West Mediterranean (WM) and East Mediterranean (EM), were reared individually at two temperatures, 18°C and 24°C. Their BWG and FI were measured at six different feeding rates, from ad libitum (100% ADL) down to fasting. A trade-off between performance at 100% ADL and at fasting was observed: more efficient fish at 100% ADL showed a stronger decrease in BWG (standardized to metabolic weight) when the feeding rate was progressively lowered and lost more weight at fasting. The most efficient fish were not the same depending on the feeding rate, suggesting the feeding rate used to phenotype fish in selective breeding programs must be the same as that used in commercial practices. The slope in the linear relationship between BWG and FI (both standardized to metabolic weight) was similar among populations and temperatures. However, EM fish had a higher intercept than others, suggesting this population grew more and thus was more efficient for an equal feeding rate. Similarly, fish reared at 1

Published
2020
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34. Individual feed intake and body weight gain relationship according to genetic origin and rearing temperature in European sea bass Dicentrarchus labrax

Author

Rodde, Charles, Vandeputte, Marc, Allal, François, Besson, Mathieu, Vergnet, Alain, Clota, Frédéric, de Verdal, Hugues, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UR226, 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), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, 3AS Station Expérimentale d'Aquaculture Ifremer, Chemin de Maguelone, 34250, Palavas-les-Flots, France, Département Performances des systèmes de production et de transformation tropicaux (Cirad-PERSYST), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), and Vandeputte, Marc

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

International audience

Published
2019

37. Améliorer l'efficacité alimentaire des poissons en utilisant une nouvelle méthode de phénotypage en aquarium individuel

Author

Besson, Mathieu, Allal, François, Vergnet, Alain, Clota, Frédéric, Cariou, Sophie, Haffray, Pierrick, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Pisciculture Expérimentale INRA des Monts d'Arrée (PEIMA), Institut National de la Recherche Agronomique (INRA), Ferme Marine de Douhet, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Syndicat des Sélectionneurs Avicoles et Aquacoles Français, AgroParisTech-Institut National de la Recherche Agronomique (INRA), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Recherche Agronomique (INRA), 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), and Institut Technique de l'Aviculture et des Elevages de Petits Animaux (ITAVI). FRA.

Subjects
Aquarium, [SDV]Life Sciences [q-bio], Sélection, Phénotypage, Poisson, Alimentation, ComputingMilieux_MISCELLANEOUS
Abstract

Améliorer l'efficacité alimentaire des poissons en utilisant une nouvelle méthode de phénotypage en aquarium individuel. 6. Journées de la Recherche Filière Piscicole

Published
2019

38. Combining Individual Phenotypes of Feed Intake With Genomic Data to Improve Feed Efficiency in Sea Bass

Author

Besson, Mathieu, Allal, Francois, Chatain, Beatrice, Vergnet, Alain, Clota, Frederic, Vandeputte, Marc, Besson, Mathieu, Allal, Francois, Chatain, Beatrice, Vergnet, Alain, Clota, Frederic, and Vandeputte, Marc

Abstract

Measuring individual feed intake of fish in farms is complex and precludes selective breeding for feed conversion ratio (FCR). Here, we estimated the individual FCR of 588 sea bass using individual rearing under restricted feeding. These fish were also phenotyped for their weight loss at fasting and muscle fat content that were possibly linked to FCR. The 588 fish were derived from a full factorial mating between parental lines divergently selected for high (F+) or low (F–) weight loss at fasting. The pedigree was known back to the great grand-parents. A subset of 400 offspring and their ancestors were genotyped for 1,110 SNPs which allowed to calculate the genomic heritability of traits. Individual FCR and growth rate in aquarium were both heritable (genomic h2 = 0.47 and 0.76, respectively) and strongly genetically correlated (−0.98) meaning that, under restricted feeding, faster growing fish were more efficient. FCR and growth rate in aquariums were also significantly better for fish with both parents from F– (1.38), worse for fish with two parents F+ (1.51) and intermediate for cross breed fish (F+/F– or F–/F+ at 1.46). Muscle fat content was positively genetically correlated to growth rate in aquarium and during fasting. Thus, selecting for higher growth rate in aquarium, lower weight loss during fasting and fatter fish could improve FCR in aquarium. Improving these traits would also improve FCR of fish in normal group rearing conditions, as we showed experimentally that groups composed of fish with good individual FCR were significantly more efficient. The FCR of groups was also better when the fish composing the groups had, on average, lower estimated breeding values for growth rate during fasting (losing less weight). Thus, improving FCR in aquarium and weight loss during fasting is promising to improve FCR of fish in groups but a selection response experiment needs to be done. Finally, we showed that the reliability of estimated breeding values was higher (

Published
2019
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39. Genome-wide association study and genomic evaluations for resistance to Viral Nervous Necrosis in wild populations of European seabass Dicentrarchus labrax

Author

Allal, François, Doan, Quoc Khanh, Chatain, Béatrice, Vergnet, Alain, Haffray, Pierrick, Vandeputte, Marc, 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), 3AS Station Expérimentale d'Aquaculture Ifremer, Chemin de Maguelone, 34250, Palavas-les-Flots, France, Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Génétique Animale et Biologie Intégrative (GABI), and AgroParisTech-Institut National de la Recherche Agronomique (INRA)

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

40. Selective breeding on tolerance to fasting improves feed conversion ratio of sea bass

Author

Besson, Mathieu, Allal, François, Chatain, Béatrice, Vergnet, Alain, Clota, Frédéric, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 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), and 3AS Station Expérimentale d'Aquaculture Ifremer, Chemin de Maguelone, 34250, Palavas-les-Flots, France

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

41. Genetic improvement of feed conversion ratio in sea bass : new approach based on individual phenotypes and genomic info

Author

Besson, Mathieu, Allal, François, Chatain, Béatrice, Vergnet, Alain, Clota, Frédéric, Ferrari, Sebastien, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), 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

42. Sélection du bar pour l’efficacité alimentaire: on y arrive

Author

Besson, Mathieu, Allal, Francois, Chatain, Béatrice, Vergnet, Alain, Clota, Frédéric, Ferrari, Sebastien, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), 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

43. Estimation of genetic parameters of feed conversion ratio based on individual phenotypes in sea bass

Author

Besson, Mathieu, Allal, François, Chatain, Béatrice, Vergnet, Alain, Clota, Frédéric, Ferrari, Sebastien, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), 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

44. Thermal imprinting during embryogenesis and future adaptive capacities in European seabass

Author

Sadoul, Bastien, Cousin, Xavier, Vandeputte, Marc, Leguen, Isabelle, Clota, Frédéric, Geffroy, Benjamin, Ruelle, François, Vergnet, Alain, Chatain, Beatrice, Prunet, Patrick, Begout, Marie-Laure, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, and Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)

Subjects
fish, capacité adaptative, poisson, [SDV]Life Sciences [q-bio], bar commun, embryogénèse, thermal effect, effet thermique, dicentrarchus labrax, moronidae
Abstract

Thermal imprinting during embryogenesis and future adaptive capacities in European seabass. 3. International Congress on Applied Ichthyology and Aquatic Environment

Published
2018

46. Héritabilité de la résistance à la nécrose nerveuse virale de populations sauvages de Bar/Loup (Dicentrarchus labrax)

Author

Allal, François, Doan, Quoc Khanh, Chatain, Béatrice, Vergnet, Alain, Breuil, Gilles, Haffray, Pierrick, Vandeputte, Marc, 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Génétique Animale et Biologie Intégrative (GABI), and AgroParisTech-Institut National de la Recherche Agronomique (INRA)

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
2017

47. Efficacité d’une sélection pour la résistance au jeûne

Author

Allal, François, Vandeputte, Marc, Vergnet, Alain, Clota, Frédéric, Besson, Mathieu, Chatain, Béatrice, 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA MARBEC), and 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)-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)

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
2017

48. Sélectionner sur l’efficacité alimentaire : une nouvelle approche chez le bar

Author

Besson, Mathieu, Allal, François, Chatain, Béatrice, Vergnet, Alain, Clota, Frédéric, Ferrari, Sebastien, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA MARBEC), 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)-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), and 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)

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
2017

49. A medium-throughput method to phenotype fish for individual feed efficiency

Author

Besson, Mathieu, François Allal, Chatain, Beatrice, Vergnet, Alain, Clota, Frederic, Ferrari, Sebastien, Vandeputte, Marc, Génétique Animale et Biologie Intégrative (GABI), AgroParisTech-Institut National de la Recherche Agronomique (INRA), 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), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), and Institut National de la Recherche Agronomique (INRA)-AgroParisTech

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
2017

50. Genetic variation of resistance to Viral Nervous Necrosis in wild populations of the European sea bass (Dicentrarchus labrax)

Author

Allal, François, Doan, Quoc Khanh, Chatain, Béatrice, Haffray, Pierrick, Vergnet, Alain, Breuil, Gilles, Vandeputte, Marc, 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), Syndicat des Sélectionneurs Avicoles et Aquacoles Français (SYSAAF), Laboratoire Service d' Experimentations Aquacoles [Palavas les Flots] (LSEA 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)-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), French Government, BPI France, Bretagne regional authority, Languedoc-Roussillon regional authority, Aquitaine regional authority, Landes regional council, and Pyrenees Atlantiques regional council

Subjects
Heritability, Genetic correlation, VNN resistance, [SDV.GEN.GA]Life Sciences [q-bio]/Genetics/Animal genetics, VNN disease, [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
Abstract

International audience; Viral Nervous Necrosis (VNN) disease is considered as one of the most serious threats for European sea bass cultured in Mediterranean Sea, with no simple and effective procedures to treat this disease. In this study, 1472 offspring resulting from artificial full factorial mating of western Mediterranean dams with sires from four different wild populations of European sea bass (Northern Atlantic, NAT; Western Mediterranean, WEM; Northern-East Mediterranean, NEM; and Southern-East Mediterranean, SEM) were challenged by experimental infection to W80 betanodavirus strain in order to evaluate genetic variations for VNN resistance among populations and genetic correlations between VNN resistance and production traits. The results showed a large variation of VNN resistance between the four populations tested as well as between sire families within strain. The survivals between pure wild populations SEM, NEM, WEM and NAT were estimated at 99%, 94%, 62%, and 44%, respectively. A moderate intra-population heritability of VNN resistance, calculated based on liability scale with sire model, was recorded for the first time in European sea bass (h(u)(2) = 0.26 +/- 0.11). Finally, moderate negative genetic correlations between VNN resistance and daily growth coefficient (DGC) and body weight (BW) were also demonstrated (-0.28 +/- 0.20, -0.35 +/- 0.14, respectively) while the genetic correlation between resistance to VNN and fillet adiposity (FA) was weakly negative and not significant (-0.13 +/- 0.19). These results give good prospects of selective breeding of European sea bass for improved resistance to VNN disease.

Published
2017

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