Consulta: creatorFacets:"Chavanne, Herve"
Registros recuperados: 8
Data/hora: 07/06/2024 00:23:08

What is the heritable component of spinal deformities in the European sea bass (Dicentrarchus labrax)?
Provedor de dados: 5
Autores: Bardon, Agnes; Vandeputte, Marc; Dupont-nivet, Mathilde; Chavanne, Herve; Haffray, Pierrick; Vergnet, Alain; Chatain, Beatrice.
Malformations in farmed fish are a prime research topic as it has a major impact on fish welfare and on the economical value of the product. In this study, the genetic component of spine deformities was estimated in European sea bass, a major species of Mediterranean aquaculture, with the use of a posteriori reconstruction of pedigree with microsatellites. Our population exhibited a very high malformation rate (81%),probably due to intense swimming of fish during pre-growing The heritability of global spine deformities was evaluated to be 0.21 +/- 0.04 on the underlying scale (033 +/- 0.06 for lordosis, 0.13 +/- 0.04 for scoliosis). Deformities scored by an internal or external examination turned out to be genetically the same trait (genetic...
Tipo: Text
Palavras-chave: Genetic correlations; Heritability; Growth; Deformities; Dicentrarchus labrax; European sea bass.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6768.pdf

Genetics of European seabass (Dicentrarchus labrax L.)
Provedor de dados: 5
Autores: Chatain, Beatrice; Chavanne, Herve.
The production of sea bass, a major species in Mediterranean fish farming, still relies in many cases on the production of fingerlings issued from wild breeders. Still, genetic improvement is a major key to sustainable development for all optimized forms of animal production. Three types of genetic improvement can be acheived in fish: i) the production of monosex populations. For seabass, monosex female populations would be the objective as females grow 20-30% faster than males. However, sex determination in this species is complex, impacted by both genetic and environmental factors. Hence, production of monosex populations is not yet a routine operation, although in some cases almost 100% female batches have been obtained; ii) chromosome set...
Tipo: Text
Palavras-chave: Sea fishes; Population genetics; Mediterranean zone; Fish culture; Dicentrarchus labrax; Breeding.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6562.pdf

Plan de sauvegarde 2011 : synthèse de résultats 2011-2012
Provedor de dados: 5
Autores: Chavanne, Herve; Maurouard, Elise; Yonneau, Caroline; Heroin, Debora; Ledu, Christophe; Degremont, Lionel; Benabdelmouna, Abdellah.
Afin de permettre l’approvisionnement partiel des établissements ostréicoles en naissain « à survie améliorée », un protocole d’approvisionnement partiel de sauvegarde (PSI) a été mis en place en 2010 entre le CNC, les CRCs, les écloseurs et l’Ifremer afin de fournir aux ostréiculteurs du naissain présentant les meilleures chances de survie face aux mortalités estivales. Il avait ainsi été décidé que des écloseries privées produiraient du naissain triploïde « à survie améliorée » en 2010 à partir de géniteurs, femelles diploïdes et mâles tétraploïdes, sélectionnés et fournis par Ifremer. Sur la base notamment des recommandations des Assises de la Conchyliculture, l’opération a été reconduite en 2011 (PSII) et 2012 (PSIII). Suite aux productions réalisées...
Tipo: Text
Palavras-chave: Mortalités; Crassostrea gigas; Huîtres creuses; Triploïde R; Sélection Génétique.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00143/25412/23563.pdf

Multi-site evaluation of the rearing performances of 5 wild populations of European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Vandeputte, Marc; Garouste, Romain; Dupont-nivet, Mathilde; Haffray, Pierrick; Vergnet, Alain; Chavanne, Herve; Laureau, Stanislas; Ron, Tetsuzan Benny; Pagelson, Glen; Mazorra, Carlos; Ricoux, Remi; Marques, Pedro; Gameiro, Marta; Chatain, Beatrice.
Sea bass is a major species in Mediterranean aquaculture, but has a distribution area ranging from North Atlantic to South Mediterranean, with a population structure previously revealed by population genetics. To test the farming performances of wild sea bass populations, we produced a partial diallel cross mating scheme, using sires originating from North Atlantic (NAT), South Atlantic (SAT), West Mediterranean (WEM), North-East Mediterranean (NEM) and South-East Mediterranean (SEM). Fifteen sires per origin were mated in a full-factorial design using artificial fertilization with 9 NAT dams and 17 WEM dams, producing 10 population crosses and 1950 potential full-sib families. All fish were reared together, then tagged at an average weight of 20 g and...
Tipo: Text
Palavras-chave: European sea bass; Dicentrarchus labrax; Selective breeding; Growth; Processing yields; Genotype by environment interaction.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00171/28265/26514.pdf

Genotype x environment interactions for growth rate in European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Vandeputte, Marc; Dupont-nivet, Mathilde; Haffray, P; Vergnet, Alain; Cenadellii, S; Parati, K; Chavanne, Herve; Laureau, S; Chatain, Beatrice.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00014/12520/9378.pdf

Etude de faisabilité d’opérations de ‘repeuplement orienté’ dans deux sites français de captage de l’huître creuse (Crassostrea gigas)
Provedor de dados: 5
Autores: Bernard, Ismael; Lapegue, Sylvie; Dumas, Franck; Talarmain, Eric; Cornette, Florence; Degremont, Lionel; Chavanne, Herve; Pouvreau, Stephane; Auby, Isabelle; Maurer, Daniele; Plus, Martin; Le Moine, Olivier; Boudry, Pierre.
La forte augmentation des mortalités de juvéniles d’huître creuse depuis 2008 a relancé la problématique de l’approvisionnement en naissains de l’ostréiculture française. Dans ce contexte, cette étude a pour objectif d’étudier la faisabilité d’opérations de repeuplement en huîtres génétiquement plus résistantes, afin d’améliorer les performances de survie du naissain capté dans le milieu naturel. Cette étude s’est ainsi focalisée sur les deux bassins naisseurs historiques, Marennes-Oléron et Arcachon. Nous avons donc cherché à établir (1) une hiérarchie des bancs en fonction de l’expulsion de larves d’huître dans le bassin d’Arcachon, (2) une cartographie des liens en termes de connectivité entre les bancs des pertuis charentais et (3) la faisabilité du...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00083/19410/17013.pdf

Genotype by environment interactions for growth in European seabass (Dicentrarchus labrax) are large when growth rate rather than weight is considered
Provedor de dados: 5
Autores: Dupont-nivet, Mathilde; Karahan-nomm, Bilge; Vergnet, Alain; Merdy, Olivier; Haffray, Pierrick; Chavanne, Herve; Chatain, Beatrice; Vandeputte, Marc.
Two hundred fifty three full-sib families from 33 males and 23 females of European seabass were produced in a partly factorial mating design. All fish were reared in the same tank for 14 months until reaching mean weight of 35 g. then 7000 of them were individually tagged and weighed, and dispatched to four farms in different locations (France, Israel, Italy and Portugal) representing a wide variety of environmental conditions. Around mean weight of 400 g. 1177 to 1667 fish at each site were weighed. Daily growth coefficient (DGC) was calculated. Pedigrees were successfully redrawn for 99.2% of fish using microsatellite markers. Genetic correlations between sites were high for body weight (&gt;0.80 in all cases but one, i.e., five cases over six), but only...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Seabass; Growth; Daily growth coefficient; Heritability; G x E interactions; Aquaculture.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12256/9227.pdf

Metapopulation patterns of additive and nonadditive genetic variance in the sea bass (   Dicentrarchus labrax   )
Provedor de dados: 5
Autores: Guinand, Bruno; Vandeputte, Marc; Dupont-nivet, Mathilde; Vergnet, Alain; Haffray, Pierrick; Chavanne, Herve; Chatain, Beatrice.
Describing and explaining the geographic within-species variation in phenotypes (“phenogeography”) in the sea over a species distribution range is central to our understanding of a variety of eco-evolutionary topics. However, phenogeographic studies that have a large potential to investigate adaptive variation are overcome by phylogeographic studies, still mainly focusing on neutral markers. How genotypic and phenotypic data could covary over large geographic scales remains poorly understood in marine species. We crossed 75 noninbred sires (five origins) and 26 dams (two origins; each side of a hybrid zone) in a factorial diallel cross in order to investigate geographic variation for early survival and sex ratio in the metapopulation of the European sea...
Tipo: Text
Palavras-chave: Additive and nonadditive variance; Darwin's corollary; Heterosis; Mito-nuclear epistasis; Pleiotropy.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00376/48759/49154.pdf