Consulta: creatorFacets:"Dupont-nivet, Mathilde"
Registros recuperados: 20
Data/hora: 04/06/2024 01:23:04

How to genetically increase fillet yield in fish: Relevant genetic parameters and methods to predict genetic gain
Provedor de dados: 5
Autores: Vandeputte, Marc; Fraslin, Clemence; Haffray, Pierrick; Bestin, Anastasia; Allal, Francois; Kocour, Martin; Prchal, Martin; Dupont-nivet, Mathilde.
Fillet yield (i.e. the proportion of edible muscle in a fish) is a key economic trait for species sold as fillets. Its genetic improvement is complicated by several of its characteristics 1) it is a ratio trait, 2) its numerator (fillet weight) and denominator (body weight) are strongly correlated (correlations in the range 0.89-0.99), 3) it offers little phenotypic variation and 4) it cannot be measured on alive breeding candidates. In a former study, we showed that it could be improved by selection, especially with three selection indices, fillet yield, residual fillet weight and a ratio-specific linear index. However, it is well known that the heritability of ratio traits does not permit a reliable prediction of genetic gains. As predictability of...
Tipo: Text
Palavras-chave: Aquaculture; Genetics; Heritability; Selection; Linear index; Residual fillet weight; Selection response; Simulation; Processing yields.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00612/72378/71390.pdf

Assessment of Genetic Variability of Fish Personality Traits using Rainbow Trout Isogenic Lines
Provedor de dados: 5
Autores: Millot, Sandie; Pean, Samuel; Labbe, Laurent; Kerneis, Thierry; Quillet, Edwige; Dupont-nivet, Mathilde; Begout, Marie-laure.
The study of inter-individual variability of personality in fish is a growing field of interest but the genetic basis of this complex trait is still poorly investigated due to the difficulty in controlling fish genetic origin and life history. When available, isogenic lines that allow performing independent tests on different individuals having identical genotype constitute a very relevant experimental material to disentangle the genetic and environmental components of behavioural individuality. We took advantage of heterozygous isogenic lines to investigate the personality in rainbow trout through the analysis of their reactions to different experimental situations. To this end, seven to ten rainbow trout isogenic lines were screened for their spatial...
Tipo: Text
Palavras-chave: Personality; Isogenic lines; Genetic variability; Risk taking; Spatial exploration; Oncorhynchus mykiss.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00194/30496/29976.pdf

Negative genetic correlations between production traits and head or bony tissues in large all-female rainbow trout (Oncorhynchus mykiss)
Provedor de dados: 5
Autores: Haffray, Pierrick; Bugeon, Jerome; Pincent, Cedric; Chapuis, Herve; Mazeiraud, Emmanuel; Rossignol, Marie-noelle; Chatain, Beatrice; Vandeputte, Marc; Dupont-nivet, Mathilde.
Genetic parameters of production traits (growth, carcass yield, fillet yield) and bony tissues (head and vertebral axis) were estimated for large all-female rainbow trout Oncorhynchus mykiss reared in freshwater. Genetic parameters were estimated using REML at 16 months of age (1636 g) on 1962 DNA-assigned progenies from a partial factorial mating design with 60 dams and 100 sex-reversed sires. Most traits presented medium to high heritability (0.37 to 0.54). A high genetic correlation (r(A)=0.97) was found between fillet yield and headless gutted carcass yield (or HGCarc%). Due to its higher heritability and high genetic correlation with fillet yield, selection on HGCarc% should result in a 50% increase in selection efficiency on fillet yield by reducing...
Tipo: Text
Palavras-chave: Resource allocation; Fillet yield; Head; Salmonids; Aquaculture; Selective breeding.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00109/22042/19801.pdf

Detection of new pathways involved in the acceptance and the utilisation of a plant-based diet in isogenic lines of rainbow trout fry
Provedor de dados: 5
Autores: Callet, Therese; Dupont-nivet, Mathilde; Cluzeaud, Marianne; Jaffrezic, Florence; Laloe, Denis; Kerneis, Thierry; Labbe, Laurent; Quillet, Edwige; Geurden, Inge; Mazurais, David; Skiba-cassy, Sandrine; Medale, Francoise.
o meet the growing demand of fish feed for aquaculture, an increasing proportion of marine ingredients are being replaced by blends of plant products. However, the total replacement of marine ingredients in salmonid diets impairs fish performance. This is particularly true during the early fry stage and this stage is therefore considered of particular importance. In rainbow trout (RBT), the existence of a genetic variability to survive and grow with plant-based diets devoid of marine ingredients has now been proved, but the mechanisms behind are little studied especially at early stage. To investigate these, we analysed the whole transcriptome of three isogenic lines of RBT fry, which have similar growth when fed a marine resources-based diet (M diet) but...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00452/56371/57969.pdf

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

Selection for Adaptation to Dietary Shifts: Towards Sustainable Breeding of Carnivorous Fish
Provedor de dados: 5
Autores: Le Boucher, Richard; Dupont-nivet, Mathilde; Vandeputte, Marc; Kerneis, Thierry; Goardon, Lionel; Labbe, Laurent; Chatain, Beatrice; Bothaire, Marie Josee; Larroquet, Laurence; Medale, Francoise; Quillet, Edwige.
Genetic adaptation to dietary environments is a key process in the evolution of natural populations and is of great interest in animal breeding. In fish farming, the use of fish meal and fish oil has been widely challenged, leading to the rapidly increasing use of plant-based products in feed. However, high substitution rates impair fish health and growth in carnivorous species. We demonstrated that survival rate, mean body weight and biomass can be improved in rainbow trout (Oncorhynchus mykiss) after a single generation of selection for the ability to adapt to a totally plant-based diet (15.1%, 35.3% and 54.4%, respectively). Individual variability in the ability to adapt to major diet changes can be effectively used to promote fish welfare and a more...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00107/21845/19429.pdf

Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Saillant, Eric; Dupont-nivet, Mathilde; Sabourault, Marie; Haffray, Pierrick; Laureau, Stanislas; Vidal, Marie-odile; Chatain, Beatrice.
Genetic parameters for carcass quality traits were estimated in 27 families of sea bass (3 dams x 9 sires factorial mating design), raised mixed in the same tanks starting before hatching. O. spring parentage was determined a posteriori using 6 microsatellite loci. Carcass quality traits were recorded at 818 days post fertilization (mean standard length: 32.6 +/- 3.1 cm). Genetic parameters were estimated from the sire half sib variance and covariance components. Heritability of body weight (BW) and carcass processing traits (standardized to body weight) percent head weight (Head%), percent viscera weight (Viscera%) and percent visceral fat weight (VisceFat%) were relatively high ranging from 0.48 +/- 0.15 (Viscera%) to 0.87 +/- 0.23 (Head%); the estimate...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Communal testing; Microsatellites markers; Carcass quality; Heritability.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6355.pdf

Is avoiding full sib matings really worthwhile in a breeding program?
Provedor de dados: 5
Autores: Dupont-nivet, Mathilde; Vandeputte, Marc.
Stochastic simulations were used to compare genetic progress and inbreeding depending on whether full sib matings were allowed or not when applying individual selection. Fifteen selection cycles were considered, using a single pair mating design. Two levels of heritability (h(2)) were studied (0.1; 0.5) as well as four different proportions of selected animals (2, 5, 10 and 20%), four population sizes (1000, 2,000, 4,000 and 10,000 candidates) and two levels of inbreeding depression (0 and 5% decrease of phenotype for 10% increase in inbreeding). Fifty replicates were generated for each set of parameters. The simulations revealed that avoiding full sib matings became less and less relevant as population size and proportion of selected animals increased and...
Tipo: Text
Palavras-chave: Selection; Sib mating; Inbreeding; Genetic variability; Stochastic simulations; Fish.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14587/11952.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

Genetic variability of environmental sensitivity revealed by phenotypic variation in body weight and (its) correlations to physiological and behavioral traits
Provedor de dados: 5
Autores: Lallias, Delphine; Quillet, Edwige; Begout, Marie-laure; Auperin, Benoit; Khaw, Hooi Ling; Millot, Sandie; Valotaire, Claudiane; Kerneais, Thierry; Labbe, Laurent; Prunet, Patrick; Dupont-nivet, Mathilde.
Adaptive phenotypic plasticity is a key component of the ability of organisms to cope with changing environmental conditions. Fish have been shown to exhibit a substantial level of phenotypic plasticity in response to abiotic and biotic factors. In the present study, we investigate the link between environmental sensitivity assessed globally (revealed by phenotypic variation in body weight) and more targeted physiological and behavioral indicators that are generally used to assess the sensitivity of a fish to environmental stressors. We took advantage of original biological material, the rainbow trout isogenic lines, which allowed the disentangling of the genetic and environmental parts of the phenotypic variance. Ten lines were characterized for the...
Tipo: Text
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00416/52769/53631.pdf

How to genetically increase fillet yield in fish: New insights from simulations based on field data
Provedor de dados: 5
Autores: Fraslin, Clemence; Dupont-nivet, Mathilde; Haffray, Pierrick; Bestin, Anastasia; Vandeputte, Marc.
Fillet yield (i.e. the proportion of edible flesh from a given amount of fish) is a trait of high economic interest for species sold as fillets. Improving it by selective breeding is not an easy task, as it is a ratio trait, which causes mathematical difficulties. It is moreover a specific ratio where numerator (fillet weight) and denominator (body weight) are very strongly correlated (genetic and phenotypic correlations in the range 0.89–0.99). This led some authors to conclude that they have the same genetic and phenotypic basis, precluding selection for improved fillet yield. In this study, we propose to study fillet yield as a component of two traits, fillet weight and waste weight (waste weight = body weight-fillet weight, so the sum of head, bones,...
Tipo: Text
Palavras-chave: Aquaculture; Genetics; Heritability; Selection; Processing yields.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00415/52599/53430.pdf

Accuracy of BLUP breeding values in a factorial mating design with mixed families and marker-based parentage assignment in rainbow trout Oncorhynchus mykiss
Provedor de dados: 5
Autores: Haffray, Pierrick; Enez, Florian; Bugeon, Jerome; Chapuis, Herve; Dupont-nivet, Mathilde; Chatain, Beatrice; Vandeputte, Marc.
Marker-based parentage assignment provides the opportunity to investigate factors of efficiency for mixed-family designs and factorial mating. In such designs, family size is both uncontrolled and small, which may be thought to limit the accuracy of estimated breeding values (EBVs). The objective of this work was to estimate the accuracy of EBVs of growth and quality traits in a large factorial mating design and in commercial breeding conditions. An expected six hundred full-sib families of rainbow trout Oncorhynchus mykiss (2042 fish in total) were produced by ten factorial matings of six dams with ten sires. Fish were phenotyped for body weight, carcass yield, fillet yield, fillet fat content and fillet colour, and family information was recovered using...
Tipo: Text
Palavras-chave: Aquaculture; Salmonids; DNA parentage assignment; Sib selection; EBV accuracy.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00429/54062/55395.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

A first insight into genotype x diet interactions in European sea bass (Dicentrarchus labrax L. 1756) in the context of plant-based diet use
Provedor de dados: 5
Autores: Le Boucher, Richard; Vandeputte, Marc; Dupont-nivet, Mathilde; Quillet, Edwige; Mazurais, David; Robin, Jean; Vergnet, Alain; Medale, Francoise; Kaushik, Sadasivam; Chatain, Beatrice.
This preliminary study assessed genotype x diet interaction in late growth of European sea bass (Dicentrarchus labrax) fed with either a fish meal (FM)- or a fish oil (FO)-based diet (M) or an all-plant-based (PB) diet. A total of 550 fish from 224 families were reared together and tagged. DNA was sampled and microsatellites were used to assign parentage. When fish weight was 192 +/- 54 g, two tanks were fed with M (FM: 100%; FO: 100%) and two others with PB (FM: 0% and FO: 0%). Body weight (BW), fork length (FL) and fillet lipid content (CorrFat) were analysed with a linear model and with REML methodology. We observed no significant differences between groups, but a slightly lower (P=0.03) daily growth coefficient in sea bass fed PB than in those fed M....
Tipo: Text
Palavras-chave: Genotype by diet x environment interaction; European sea bass; Plant diet; Genetic correlation.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00032/14335/12374.pdf

Genetic Parameters and Genome-Wide Association Studies of Quality Traits Characterised Using Imaging Technologies in Rainbow Trout, Oncorhynchus mykiss
Provedor de dados: 5
Autores: Blay, Carole; Haffray, Pierrick; Bugeon, Jérôme; D’ambrosio, Jonathan; Dechamp, Nicolas; Collewet, Guylaine; Enez, Florian; Petit, Vincent; Cousin, Xavier; Corraze, Geneviève; Phocas, Florence; Dupont-nivet, Mathilde.
One of the top priorities of the aquaculture industry is the genetic improvement of economically important traits in fish, such as those related to processing and quality. However, the accuracy of genetic evaluations has been hindered by a lack of data on such traits from a sufficiently large population of animals. The objectives of this study were thus threefold: (i) to estimate genetic parameters of growth-, yield-, and quality-related traits in rainbow trout (Oncorhynchus mykiss) using three different phenotyping technologies [invasive and non-invasive: microwave-based, digital image analysis, and magnetic resonance imaging (MRI)], (ii) to detect quantitative trait loci (QTLs) associated with these traits, and (iii) to identify candidate genes present...
Tipo: Text
Palavras-chave: Aquaculture; Fat content; Flesh colour; Magnetic resonance imaging; Fatmeter; Computer vision; Genetic correlations; QTL.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00682/79410/81958.pdf

Side effects of sexual maturation on heritability estimates in rainbow trout (Oncorhynchus mykiss)
Provedor de dados: 5
Autores: Dupont-nivet, Mathilde; Chevassus, Bernard; Mauger, Stephane; Haffray, Pierrick; Vandeputte, Marc.
Tipo: Text
Palavras-chave: Fish; Genetic parameters; Sex effect; Growth.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00016/12690/9656.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

Genetic parameters of in-vivo prediction of carcass, head and fillet yields by internal ultrasound and 2D external imagery in large rainbow trout (Oncorhynchus mykiss)
Provedor de dados: 5
Autores: Haffray, Pierrick; Bugeon, Jerome; Rivard, Quentin; Quittet, Benjamin; Puyo, Sophie; Allamelou, Jean Michel; Vandeputte, Marc; Dupont-nivet, Mathilde.
Selection to improve processing yields relies on sib selection, in which live candidates are ranked according to their family breeding value. This approach limits genetic progress, as it only exploits genetic variability between families and not within them. Indirect criteria measured on live candidates could overcome this limitation. The present study (1) proposes a procedure to identify indirect criteria to predict processing yields in rainbow trout (head, carcass and fillet yields), (2) estimates genetic parameters of these indirect criteria, and (3) predicts relative genetic gains in processing yields using full-sib selection or indirect individual selection on those indirect criteria. DNA-pedigreed all-female rainbow trout Oncorhynchus mykiss (n =...
Tipo: Text
Palavras-chave: Salmonids; Heritability; Fillet yield; Selection; Aquaculture; Morphometry.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00157/26847/25249.pdf

First Evidence of Realized Selection Response on Fillet Yield in Rainbow Trout Oncorhynchus mykiss, Using Sib Selection or Based on Correlated Ultrasound Measurements
Provedor de dados: 5
Autores: Vandeputte, Marc; Bugeon, Jérôme; Bestin, Anastasia; Desgranges, Alexandre; Allamellou, Jean-michel; Tyran, Anne-sophie; Allal, Francois; Dupont-nivet, Mathilde; Haffray, Pierrick.
Fillet yield, the proportion of edible fillet relative to body weight, is a major trait to improve in fish sold processed, as it has a direct impact on profitability and can simultaneously decrease the environmental impact of producing a given amount of fillet. However, it is difficult to improve by selective breeding, because it cannot be measured on live breeding candidates, its phenotypic variation is low, and, as a ratio, it is not normally distributed and a same change in fillet yield can be the result of different changes in fillet weight and body weight. Residual headless gutted carcass weight (rHGCW) is heritable and highly genetically correlated to Fillet% in rainbow trout, and can be predicted by the ratio of abdominal wall thickness to depth of...
Tipo: Text
Palavras-chave: Aquaculture; Fillet yield; Selective breeding; Selection response; Production efficiency; Heritability.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00599/71121/69423.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