Consulta: creatorFacets:"Chatain, Beatrice"
Registros recuperados: 92
Data/hora: 10/06/2024 18:26:51

Population-specific variations of the genetic architecture of sex determination in wild European sea bass Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Faggion, Sara; Vandeputte, Marc; Chatain, Beatrice; Gagnaire, Pierre-alexandre; Allal, Francois.
Polygenic sex determination (PSD) may show variations in terms of genetic and environmental components between populations of fish species exposed/adapted to different environments. The European sea bass (Dicentrarchus labrax) is an interesting model, combining both a PSD system and a genetic subdivision into an Atlantic and a Mediterranean lineage, with genetic substructures within the Mediterranean Sea. Here, we produced experimental progeny crosses (N = 927) from broodstock sampled in four wild populations (North Atlantic, NAT; Western Mediterranean, WEM; North-Eastern Mediterranean, NEM; South-Eastern Mediterranean, SEM). We found less females than males in the progeny, both in the global dataset (32.5%) and within each paternal group (from 25.1% for...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00464/57609/59864.pdf

Unfamiliar congener used as a visual attractor in wild caught and domesticated sea bass (Dicentrarchus labrax) placed in a T-maze
Provedor de dados: 5
Autores: Benhaim, David; Begout, Marie-laure; Chatain, Beatrice.
The present work compared wild-caught and domesticated sea bass juveniles swimming activity, exploration and visual attraction induced by an unfamiliar congener located behind a transparent wall at the end of one arm of a T-maze. This cognitive challenge was based on the hypothesis that placed into a novel and therefore stressful environment; the fish would adopt a gregarious behaviour even though they were not familiar with the present congener. Twenty individuals of similar size from both origins were individually tested. After a 5min acclimatization period, the wall of the start-box was removed and the maze was filmed during 20 min. Different swimming variables including angular velocity (Vang), total distance travelled (Dtot), velocity mean (Vel), time...
Tipo: Text
Palavras-chave: Domestication; Maze; Visual cue; Personality; Swimming activity.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00192/30322/28793.pdf

Agonistic behaviour and feed efficiency in juvenile Nile tilapia Oreochromis niloticus
Provedor de dados: 5
Autores: De Verdal, Hugues; O'Connell, Catherine Maeve; Mekkawy, Wagdy; Vandeputte, Marc; Chatain, Beatrice; Bégout, Marie-laure; Benzie, John A.h.
Given the strong effects of behavioural hierarchies on growth in many cultured species and the key role of feed efficiency in aquaculture economics, understanding the nature of the interaction of these variables is important for the sustainability of aquaculture. The relationship between agonistic behaviour, growth and feed efficiency in Nile tilapia, Oreochromis niloticus, was studied by rearing 120 fish in eight aquaria. Fish were video-recorded to estimate the occurrence of agonistic behaviour during a fasting and a refeeding period. Growth, feed intake and feed conversion efficiency (FCE - calculated as the inverse of feed conversion ratio (FCR)) were subsequently measured individually for each fish. Fish showed 58% less agonistic traits during the...
Tipo: Text
Palavras-chave: Agonstic behaviour; Feed efficiency; Nile tilapia; Performances; Correlation.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00483/59495/62363.pdf

Impact of aquaculture on the genetic structure of Mediterranean populations of Dicentrarchus
Provedor de dados: 5
Autores: Bahri Sfar, Lilia; Lemaire, Christophe; Chatain, Beatrice; Divanach, Pascal; Ben Hassine, Oum Kalthoum; Bonhomme, Francois.
A phylogeographic analysis based on 6 polymorphic microsatellites was performed on 15 sea bass samples. five from Western Mediterranean, seven from Eastern Mediterranean and three coming from French aquaculture stocks. Among the eastern samples, three did not cluster according to their geographic origin but rather with the occidental group. Furthermore. a somewhat lower allelic diversity was observed within these particular samples, indicating that they originated from a limited number of progenitors of foreign origin. Among the aquaculture stocks, only one revealed a significant reduction of genetic variability, indicating that these stocks are largely outbred and open to wild fishes. The fact that the use of occidental fingerlings to seed broodstocks in...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Farmed populations; Escapees; Molecular marker.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-410.pdf

Response to domestication and selection for growth in the European sea bass (Dicentrarchus labrax) in separate and mixed tanks
Provedor de dados: 5
Autores: Vandeputte, Marc; Dupont Nivet, M; Haffray, P; Chavanne, H; Cenadelli, S; Parati, K; Vidal, Marie-odile; Vergnet, Alain; Chatain, Beatrice.
Selective breeding of European sea bass (Dicentrarchus labrax) receives a growing interest, as the estimated heritability of growth is medium to high. In this study, we compared the offspring of four groups of sea bass sires, mated with the same wild dams: wild (W), first generation of domestication (D), first generation of mass selection for length (M), first generation of PROSPER-like selection for length (P). The comparison was done both in replicated tanks (separate rearing) and in mixed tanks (mixed rearing) where sire origins were recovered by genotyping of eight microsatellite markers. Weight, length and growth rate were measured from day 238 post-fertilization (69 g mean weight) to day 611 post-fertilization (390 g mean weight). Both in mixed and...
Tipo: Text
Palavras-chave: Nephrocalcinosis; Competition; Microsatellites; Parentage assignment; Realized heritability; Selection response; Growth; Selective breeding; Dicentrarchus labrax; European sea bass.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-5303.pdf

Relationship between individual and group learning in a marine teleost: A case study with sea bass under self-feeding conditions
Provedor de dados: 5
Autores: Benhaim, David; Ferrari, Sebastien; Colchen, Tatiana; Chatain, Beatrice; Begout, Marie-laure.
Fish learning and cognition are usually approached by testing single individuals in various devices such as mazes that have serious drawbacks, especially in gregarious species, including the stress induced by the test procedure. This might impair the results and lead to misinterpretation about the learning abilities of the targeted species. In order to provide an alternative to the individual-based tests, we investigated for the first time the operant conditioning of four similar groups (50 individuals per tank) of sea bass. We used two computerized self-feeder devices per tank, each coupled with individual electronic identification and that were alternately activated during varying positive appetitive reinforcement period of time (7 to 1 day). Learning...
Tipo: Text
Palavras-chave: Operant conditioning; Group conditions; Social structure; Producer-scrounger; Personality traits; Positive reinforcement.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00380/49125/49665.pdf

Can individual feed conversion ratio at commercial size be predicted from juvenile performance in individually reared Nile tilapia Oreochromis niloticus?
Provedor de dados: 5
Autores: Rodde, Charles; Chatain, Beatrice; Vandeputte, Marc; Quoc Trinh, Trong; Benzie, John A.h.; De Verdal, Hugues.
Feed conversion ratio (FCR), the ratio between feed intake and body weight gain, is of major interest for improving aquaculture sustainability through reduced feed costs and environmental impacts. Demonstrating whether FCR measured in juvenile fish is an accurate predictor of their performance during the whole rearing period is critical to developing genetic improvement programs for this trait. This is especially true for estimates obtained in individually reared fish, for which this has high implications regarding the size of the necessary rearing structures. We obtained individual FCR from 30 male Nile tilapia Oreochromis niloticus from the GIFT strain individually reared in a recirculating system, from 36 to 260 g mean weight. They were fed twice a day...
Tipo: Text
Palavras-chave: Feed efficiency; GIFT tilapia; Individual rearing; Selective breeding.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00630/74175/73757.pdf

Measuring individual feed efficiency and its correlations with performance traits in Nile tilapia, Oreochromis niloticus
Provedor de dados: 5
Autores: De Verdal, Hugues; Mekkawy, Wagdy; Lind, Curtis E.; Vandeputte, Marc; Chatain, Beatrice; Benzie, John A. H.
Estimating individual feed intake of fish held in groups has long been a challenge precluding precise knowledge of the individual variation of feed efficiency (FE) in fish. In this study, counts of the number of feed pellets (1.63 mg on average) eaten by individual tilapia (Oreochromis niloticus) held in 8 mixed sex groups of 15 fish were measured from video recordings made over a period of 10 days where fish were fed twice daily to achieve compensatory growth after 10 days of fasting. The initial body weight of the fish was 9.77 ± 2.03 g. Accumulated measures of feed intake (FI) over 11 meals were found to achieve 95% repeatability and a high accuracy of estimation of FI. During the FI measurement period, the average fish growth was 12.0 ± 3.6 g, feed...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00357/46832/46707.pdf

Genotype by diet interactions in European sea bass (Dicentrarchus labrax L.): Nutritional challenge with totally plant-based diets
Provedor de dados: 5
Autores: Le Boucher, Richard; Vandeputte, Marc; Dupont-nivet, M.; Quillet, E.; Ruelle, Francois; Vergnet, Alain; Kaushik, Sadasivam; Allamellou, J. M.; Medale, F.; Chatain, Beatrice.
Aquaculture of carnivorous species has strongly relied on fish meal and fish oil for feed formulation; however, greater replacement by terrestrial plant-based products is occurring now. This rapid change in dietary environment has been a major revolution and has to be taken into consideration in breeding programs. The present study analyzes potential consequences of this nutritional tendency for selective breeding by estimating genetic parameters of BW and growth rates estimated by the thermal growth coefficient (TGC) over different periods with extremely different diets. European sea bass (Dicentrarchus labrax L.) from a factorial cross (1,526 fish) between 25 sires and 9 dams were used to estimate heritabilities and genotype by diet interaction. Starting...
Tipo: Text
Palavras-chave: European sea bass; Genetic correlation; Genotype by diet interaction; Genotype by environment interaction; Plant-based diet.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00146/25711/26299.pdf

Risk-taking behaviour variation over time in sea bass Dicentrarchus labrax: effects of day-night alternation, fish phenotypic characteristics and selection for growth
Provedor de dados: 5
Autores: Millot, Sandie; Begout, Marie-laure; Chatain, Beatrice.
Differences in bold and shy personality on sea bass Dicentrarchus labrax were investigated between a population (wild) produced from wild-brood fish and a population (selected) produced from selected-brood fish. During the experiment (112 days), fish were reared under self-feeding condition to characterize the feeding behaviour of each individual fish. Three risk-taking tests (T1, T2 and T3 of 24 h with day-night alternation) were carried out at &gt; 1 month intervals on 180 fish of each strain in order to monitor D. labrax behaviour over time and in relation to the light:dark period. A risk-taking score was evaluated via a preference choice between a safe zone (without food) and a risky zone (potentially with food) by recording the number and the duration...
Tipo: Text
Palavras-chave: Learning; Habituation; Domestication; Choice test; Boldness.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-7313.pdf

Current status of the French intensive larval rearing techniques for sea bass (Dicentrarchus labrax) &amp; sea bream (Sparus auratus)
Provedor de dados: 5
Autores: Chatain, Beatrice; Coves, Denis.
Tipo: Text
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00364/47486/47777.pdf

A shortcut method for sexing juvenile European sea bass, Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Menu, Bruno; Peruzzi, Stefano; Vergnet, Alain; Vidal, Marie-odile; Chatain, Beatrice.
The objective of this study was to develop a rapid and effective method of sexing juvenile sea bass with minimum labour and material. To this end, the gonad squash mount technique was applied along with macroscopic techniques for sexing a large number of experimental fish at the age of 215-275 days post fertilization (p.f.). At this age, 90% of the 3894 fish could be unambiguously sexed by macroscopic examination of their gonads, whereas the remaining proportion was identified using squash mount preparations (10%). The accuracy of the observations was measured up to classical histology procedures. Undifferentiated fish accounted for 0.1% of the total population only. The application of the squash mount technique holds out the prospect of considerable...
Tipo: Text
Palavras-chave: Histology; Squash; Juvenile; Gonads; Seabass; Dicentrarchus labrax.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-378.pdf

Evaluation of behavioral changes induced by a first step of domestication or selection for growth in the European sea bass (Dicentrarchus labrax): A self-feeding approach under repeated acute stress
Provedor de dados: 5
Autores: Millot, Sandie; Pean, Samuel; Leguay, Didier; Vergnet, Alain; Chatain, Beatrice; Begout, Marie-laure.
Among other strategies to improve fish welfare in rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated specie, the sea bass, Dicentrarchus labrax, L., an experiment was realized, using four populations differing according to their level of domestication or selection: one population produced from wild parents (Wild), one population produced from parents domesticated for one generation (Domesticated) and two produced from parents selected for growth for one generation (Selected A and Selected B). The experiment was carried out over 91 days with 600 fish (50 fish per tank, 150 fish per population). After a control period, the fish...
Tipo: Text
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Welfare.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00011/12254/9030.pdf

Estimation et amélioration des performances zootechniques de l'élevage larvaire de Dicentrarchus labrax et de Sparus auratus
Provedor de dados: 5
Autores: Chatain, Beatrice.
By gathering specific measurement criteria and an objective analysis  of field methods, the main purpose of this work is to help estimate larval Sea Bass (Dicentrarchus labrax) and Sea Bream {Sparus auratus) stock performance raised under intensive conditions. As such, it is a  methodology guide zootechnicians can use, in their daily quantitative and  qualitative evaluation stock issues. The first part of this work covers defining the precision of current counting  methods and establishing their limitations. The quantification methods  analysed, as well as the new proposed methods, relate to the major phases of larval farming, from laying to postlarval stage. Three field methods commonly used in aquaculture to quantify egg population  are therefore...
Tipo: Text
Palavras-chave: Sparus auratus; Dicentrarchus labrax; Larval breeding; Zootechnical performance; Sparus auratus; Dicentrarchus labrax; Elevage larvaire; Performance zootechnique.
Ano: 1994
URL: http://archimer.ifremer.fr/doc/1994/these-1750.pdf

Gene-centromere mapping in meiotic gynogenetic European seabass
Provedor de dados: 5
Autores: Oral, Munevver; Colleter, Julie; Bekaert, Michhttps://w3.ifremer.fr/archimer-admin/author.jsp#ael; Taggart, John B.; Palaiokostas, Christos; Mcandrew, Brendan J.; Vandeputte, Marc; Chatain, Beatrice; Kuhl, Heiner; Reinhardt, Richard; Peruzzi, Stefano; Penman, David J.
Background Fully isogenic lines in fish can be developed using “mitotic” gynogenesis (suppression of first zygotic mitosis following inactivation of the sperm genome). However, genome-wide verification of the steps in this process has seldom been applied. We used ddRADseq to generate SNP markers in a meiotic gynogenetic family of European seabass (Dicentrarchus labrax): (i) to verify the lack of paternal contribution in a meiotic gynogenetic family; (ii) to generate a gene-centromere map from this family; (iii) to identify telomeric markers that could distinguish mitotic gynogenetics from meiotic gynogenetics, which sometimes arise spontaneously in mitotic gynogenetic families. Results From a single meiotic gynogenetic family consisting of 79 progeny, 42...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Meiotic gynogenesis; Isogenic lines; DdRAD seq; Genetic map; Gene-Centromere map; Aquaculture.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00388/49901/50462.pdf

Combining vitassign and colony: an efficient practical procedure for parental assignment with missing parents
Provedor de dados: 5
Autores: Doan, Q.k.; Vandeputte, Marc; Chatain, Beatrice; Vergnet, Alain; Allal, Francois.
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00281/39196/37750.pdf

Heritability of Boldness and Hypoxia Avoidance in European Seabass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Ferrari, Sebastien; Horri, Khaled; Allal, Francois; Vergnet, Alain; Benhaim, David; Vandeputte, Marc; Chatain, Beatrice; Begout, Marie-laure.
To understand the genetic basis of coping style in European seabass, fish from a full factorial mating (10 females x 50 males) were reared in common garden and individually tagged. Individuals coping style was characterized through behavior tests at four different ages, categorizing fish into proactive or reactive: a hypoxia avoidance test (at 255 days post hatching, dph) and 3 risk-taking tests (at 276, 286 and 304 dph). We observed significant heritability of the coping style, higher for the average of risk-taking scores (h2 = 0.45 ± 0.14) than for the hypoxia avoidance test (h2 = 0.19 ± 0.10). The genetic correlations between the three risk-taking scores were very high (rA = 0.96–0.99) showing that although their repeatability was moderately high (rP =...
Tipo: Text
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00362/47278/47239.pdf

"Freezebass" Setting up of a sperm cryobank for sea bass. Q5CT-2002-71209. Final report (01 January 2003 – 30 June 2005)
Provedor de dados: 5
Autores: Chatain, Beatrice; Poline, Olivier.
Objectives : Presently, most of marine fish farmers around the Mediterranean basin grow genetically wild fish strains, which have not been genetically improved for culture performance (growth, appearance, disease resistance etc.). It is inevitable that the present gap for genetically improved strains of marine fish, and their reliable supply, will be filled. It will ultimately dominate the competitive component of marine culture industries once they evolve into commodity-style agribusiness (with fish prices being set at the lowest possible cost of production and the best quality). Those countries, which can competitively develop and supply the improved strains, will enjoy the benefit (perhaps survival) for their local industries. They will avoid...
Tipo: Text
Palavras-chave: Pathogen free; Genetic origin; Sperm; Cryopreservation; Sea bass.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-6494.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

Fiche Action : CREation CHeptels Experimentaux (CRECHE2016)
Provedor de dados: 5
Autores: Vergnet, Alain; Chatain, Beatrice.
Deux objectifs sont visés dans cette partie piscicole qui consistent en la création et la caractérisation de lignées expérimentales, un matériel biologique spécifique développé et entretenu comme support de recherche pour l’ensemble de la communauté scientifique.
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00433/54416/55746.pdf

Genetical improvement of marine fish and shellfish : a french perspective
Provedor de dados: 5
Autores: Boudry, Pierre; Chatain, Beatrice; Naciri-graven, Yamama; Lemaire, Christophe; Gerard, Andre.
In France, marine fish and shellfish farming is based mainly on the breeding of wild species, whose natural populations are traditionally exploited. Research programs are conducted by IFREMER, in co-operation with INRA and Universities. French research programs for the genetical improvement of marine fish and shellfish concern primarily seabass (Dicentrarchus labrax) and oysters (Ostrea edulis and Crassostrea gigas). The following programs are developed:  •The knowledge of wild and farmed populations. The most recent prodjects involve the highly variable microsatellite markers. Seven markers are presently available for seabass and the work is now initiated on turbot (Scophthalmus maximus). In molluscs, microsatellite markers have been developed for the...
Tipo: Text
Palavras-chave: Selection; Triploid; Shellfish; Fish; Genetic.
Ano: 1996
URL: http://archimer.ifremer.fr/doc/1996/acte-3206.pdf

Effects of domestication, selection and stress on the energy balance of Sea bass (Dicentrarchus labrax) in aquaculture
Provedor de dados: 5
Autores: Campeas, Arnaud; Millot, Sandie; Chatain, Beatrice; Begout, Marie-laure; Alunno-bruscia, Marianne.
Reared sea bass (Dicentrarchus labrax) represent 13% of the economic weight of the Mediterranean aquaculture production (FAO, 2005) and is a subject of selection program. However, the traditional goal of selection that prevailed in the last century, i.e. increasing productivity, have to be modulated by new objectives such as better feed management or increasing fish welfare. The aim of our study is to evaluate the influence of domestication and selection, and their interactions with stress, on the energy balance in sea bass (Dicentrarchus labrax). Therefore, we used two experimental datasets and analysed their results through a mathematical model. Four strains of sea bass were studied: i) Wild strain, ii) Domesticated strain (first generation obtained by...
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00032/14371/11665.pdf

Early life behavioural differences in wild caught and domesticated sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Benhaim, David; Pean, Samuel; Lucas, Gael; Blanc, Nancy; Chatain, Beatrice; Begout, Marie-laure.
Behavioural studies comparing hatchery and wild-caught fish are useful to improve selection for aquaculture and restocking programmes. We examined swimming behaviour characteristics in wild captured and domesticated sea bass juveniles before and after eliciting a startle response at 8 different ages and always on naive individuals. We specifically investigated whether domestication impacts juvenile sea bass behaviour and whether the first months of captivity induce behavioural modifications in wild juveniles. An apparatus was designed to mimic a predator attack by presenting a sudden visual and mechanical stimuli simultaneously in 8 arenas where single individuals were placed and video recorded. The reactivity response was evaluated and different swimming...
Tipo: Text
Palavras-chave: Domestication; Swimming activity; Restocking; Selection; Coping styles.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00102/21363/19403.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

Aquaculture in Occitanie, France
Provedor de dados: 5
Autores: Lane, Alistair; Chatain, Beatrice; Roque D'Orbcastel, Emmanuelle.
Tipo: Text
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00435/54695/56280.pdf

Personality traits identification based upon hypoxia test and mecano acoustic stimulation in European seabass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Benhaim, D; Ferrari, Sebastien; Theysset, R; Chatain, Beatrice; Begout, Marie-laure.
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00298/40959/40060.pdf

Pressure and cold shock induction of meiotic gynogenesis and triploidy in the European sea bass, Dicentrarchus labrax L.: relative efficiency of methods and parental variability
Provedor de dados: 5
Autores: Peruzzi, Stefano; Chatain, Beatrice.
The optimal conditions for the retention of the second polar body in sea bass eggs were investigated by altering the timing, intensity and duration of application of pressure and cold shocks. Treatment optima for cold shocks were 0-1 degrees C for 15-20 min at 5 min after fertilisation (a.f.) and 8500 psi for 2 min at 6 min a.f. for pressure shocks. Meiogenesis was obtained by fertilising eggs with UV-irradiated homologous sperm (32,000 erg mm(-2)) and pressure or cold shocking eggs as above. 100% triploidy was induced following definition of liable periods for the disruption of the meiotic spindle obtained in gynogenesis. Ploidy investigations were performed on experimental groups by flow-cytometry. Verification of uniparental transmission in meiogens was...
Tipo: Text
Palavras-chave: Parental variability; Pressure and cold shocks; Dicentrarchus labrax; Sea bass; Triploidy; Meiotic gynogenesis.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-507.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

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

Amélioration génétique et utilisation des aliments à base de végétaux en pisciculture
Provedor de dados: 5
Autores: Le Boucher, Richard; Dupont-nivet, M.; Laureau, S.; Labbe, Laurent; Geurden, I.; Medale, F.; Chatain, Beatrice; Vandeputte, Marc; Quillet, E.
World fish farm production is growing rapidly. However, the supply of fishmeal and fish oil, the major ingredients of fish diets, has reached a limit because of the limits in the exploitation of wild fish stocks that cannot be increased to meet a growing demand. The main response, especially in Europe, has been the progressive replacement of fishmeal and fish oil by plant products. However, the strong reduction of growth and sometimes survival of fish fed highly substituted diets has urged research on the genetic potential for adaptation to plant-based diets. Recent results clearly demonstrate that fish can be selected for their capacity to grow when fed plant-based diets, even though the underlying mechanisms remain unknown. Genotype-diet interactions...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00200/31167/29566.pdf

Genetic investigation of swimbladder inflation anomalies in the European sea bass, Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Peruzzi, Stefano; Westgaard, Jon-ivar; Chatain, Beatrice.
Although the actiology of swimbladder inflation anomalies in important aquaculture species such as European sea bass D. labrax is not fully determined, culture conditions are commonly suggested as main contributory factors. Little information is available on whether swimbladder inflation has a genetic basis for its expression too. In this work, 24 full-sibling sea bass families from a 4 dams x 6 sires factorial crossing were reared under communal conditions. The larvae developing normal and abnormal (uninflated or hyper-inflated) swimbladders were genotyped at four microsatellite loci, Labrax-3, Labrax-13, Labrax-17, Labrax29, and allocated to the individual breeders. Out of 273 offspring, 97% could be assigned to a single parental pair. The genotype and...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Sea bass; Genetics; Anomalies; Swimbladder.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2590.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

Heritabilities and GxE interactions for growth in the European sea bass (Dicentrarchus labrax L.) using a marker-based pedigree
Provedor de dados: 5
Autores: Dupont Nivet, M; Vandeputte, Marc; Vergnet, Alain; Merdy, O; Haffray, P; Chavanne, H; Chatain, Beatrice.
253 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 during 14 months, then 7000 of them were dispatched in four farms to different locations (France, Israel, Italy, Portugal) representing a wide variety of environmental conditions. Around 400 g mean weight, 1177 to 1667 fish in each site were weighed and length was measured. Condition factor (K) was calculated. Pedigrees were redrawn a posteriori using microsatellites markers: parental origin could be retraced for 99.2% of fish. Due to a high incidence of deformities, the useful sample size was reduced to 491-670 fish per site.   Maternal effects were small. Using a simple animal model, heritability...
Tipo: Text
Palavras-chave: Microsatellites; GxE interactions; Heritability; Growth; Seabass; Dicentrarchus labrax.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4404.pdf

Effect of fasting on self-feeding activity in juvenile sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Benhaim, David; Begout, Marie-laure; Pean, Samuel; Brisset, Blandine; Leguay, Didier; Chatain, Beatrice.
In various experiments under self-feeding conditions, sea bass groups could be divided into three categories regarding feeder actuation: high, low and zero-triggering fish. In all cases few high-triggering fish were responsible for a high percentage of the feed delivery. A question was raised about the role played by feeding motivation in such high-triggering status acquisition. It was approached by applying a 3-week fasting period in order to induce similar negative specific growth rate (SGR) in two groups of fish of similar mean weight but with either a low or a high coefficient of variation for weight (CVw)(T-low: CVw similar to 11%, 3 tanks of 60 fish each; T-high: CVw similar to 20%, 3 tanks of 60 fish each). These groups were created to test the...
Tipo: Text
Palavras-chave: Personality; Plasticity; Feeding-behaviour; Self-feeder; Social structure.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00069/18004/15672.pdf

Cloning and retinal expression of melatonin receptors in the European sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Sauzet, S; Besseau, L; Perez, P; Coves, Denis; Chatain, Beatrice; Peyric, E; Boeuf, G; Munoz Cueto, J; Falcon, J.
Melatonin contributes to synchronizing behaviors and physiological functions to daily and seasonal rhythm in fish. However, no coherent vision emerges because the effects vary with the species, sex, moment of the year or sexual cycle. And, scarce information is available concerning the melatonin age, receptors, which is crucial to our understanding of the role melatonin plays. We report here the full length cloning of three different melatonin receptor subtypes in the sea bass Dicentrarchus labrax, belonging, respectively, to the MT1, MT2 and Mellc subtypes. MT1, the most abundantly expressed, was detected in the central nervous system, retina, and gills. MT2 was detected in the pituitary gland, blood cells and, to a lesser extend, in the optic tectum,...
Tipo: Text
Palavras-chave: Retina; Melatonin receptors; Sea bass.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4513.pdf

Is dried Spirulina suitable as a sole source of feed for the feeding onset of the estuarine tilapia Sarotherodon melanotheron heudelotii ?
Provedor de dados: 5
Autores: Clota, Frédéric; Chatain, Beatrice; Lozano, Paul.
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00279/38974/37515.pdf

Consistency in European seabass coping styles: A life history approach
Provedor de dados: 5
Autores: Ferrari, Sebastien; Millot, Sandie; Leguay, Didier; Chatain, Beatrice; Begout, Marie-laure.
Recent years have seen a growth of interest in the consistent differences in individual behaviour over time and contexts constituting so-called “individual coping styles”. An understanding of this inter-individual variation is essential to improve our knowledge of the adaptive value of behaviour. Coping styles may have implications in diverse fields, so the development of appropriate screening methods for each species appears to be the most effective way to extend our knowledge and to incorporate behavioural responses into selection-based breeding programmes, to improve the domestication and welfare of farmed fish. We tested 30 juvenile seabass (Dicentrarchus labrax) at least twice in individual-based tests (feeding recovery in isolation, aggressiveness,...
Tipo: Text
Palavras-chave: Behavioural plasticity; Repeatability; Life stages; Dicentrarchus labrax.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00257/36814/35442.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

Early individual electronic identification of sea bass using RFID microtags: A first example of early phenotyping of sex-related growth
Provedor de dados: 5
Autores: Ferrari, Sebastien; Chatain, Beatrice; Cousin, Xavier; Leguay, Didier; Vergnet, Alain; Vidal, Marie-odile; Vandeputte, Marc; Begout, Marie-laure.
Although individual electronic tagging using PIT (Passive Integrated Transponder) tags is well established, it is mainly used for fish &gt; 60 mm in length. Since electronic tagging is an ideal identification method, we used RFID (Radio Frequency Identification) microtags (6 mm in length, 1 mm in diameter, 10 mg in mass) to characterize individual fish from the early stages of their development and throughout their lifecycles. We used sea bass, Dicentrarchus labrax, (105 day-old fish weighing between 100 and 1100 mg) and studied the effects of intra-coelomic tagging in half the population using different endpoints including survival and tag reading, growth over 6 months and swimming responses. Dead fish were counted daily, biometric data were collected at...
Tipo: Text
Palavras-chave: Tagging effects; Swimming behavior; Sexual dimorphism; Dicentrarchus labrax.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00175/28645/27072.pdf

Are sex ratios in wild European sea bass (Dicentrarchus labrax) populations biased?
Provedor de dados: 5
Autores: Vandeputte, Marc; Quillet, Edwige; Chatain, Beatrice.
Sex ratios in farmed European sea bass are highly biased towards males (75 to 95%), which is problematic for aquaculture. In this mini-review, we re-analyse fisheries literature data about sex ratios in wild sea bass from 13 population samples, representing altogether 4889 individuals covering the major part of the distribution range of the species. We find that as a whole, the sex ratio of wild populations is biased towards females (59.4% females, p &lt; 0.001), but that the sex ratio of the younger fish (&lt; 30 cm total length) is balanced (52.0% females, p = 0.15), while the sex ratio of the older fish is heavily biased towards females (69.5% females, p &lt; 0.01). Possible causes of these differences (differential longevity, biased sampling) are...
Tipo: Text
Palavras-chave: Sex ratio; Genetics; Sex determination; Fish aquaculture; Dicentrarchus labrax.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00078/18882/16450.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

La recherche pour un développement durable de la pisciculture marine
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Coves, Denis; Chatain, Beatrice; Callier, Myriam.
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00487/59825/62968.pdf

Minimizing maternal effect in salmonid families mixed since eyed stages and a posteriori DNA-pedigreed
Provedor de dados: 5
Autores: Haffray, Pierrick; Vandeputte, Marc; Petit, V.; Pincent, Cedric; Chatain, Beatrice; Chapuis, H.; Meriaux, J. C.; Coudurier, B.; Quillet, E.; Dupont-nivet, M.
Application of DNA parentage assignment for commercial selection in aquaculture is still rare. An experiment was performed to quantify and to minimize maternal effects on growth in rainbow trout. Six hundred families were reared until 198 day post fertilization (dpf) according to two different procedures. In the first procedure (NORM), all families were pooled at eyed stage. In the second procedure (MIN), where maternal effects due to differences in egg size were expected to be minimal, the spawns were divided into sub-groups with similar mean egg weight at eyed stage. These sub-groups were then pooled when they achieved the same mean body length (147 dpf). Genetic parameters were estimated for body weight, body length and condition factor at 198 dpf, with...
Tipo: Text
Palavras-chave: Rainbow trout; Fingerprint; Maternal effect; Heritability; Growth; Triploid.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00115/22639/20395.pdf

Genetic variability in residual feed intake in rainbow trout clones and testing of indirect selection criteria
Provedor de dados: 5
Autores: Grima, Laure; Quillet, E; Boujard, Thierry; Robert Granie, C; Chatain, Beatrice; Mambrini, M.
Little is known about the genetic basis of residual feed intake (RFI) variation in fish, since this trait is highly sensitive to environmental influences, and feed intake of individuals is difficult to measure accurately. The purpose of this work was (i) to assess the genetic variability of RFI estimated by an X-ray technique and (ii) to develop predictive criteria for RFI. Two predictive criteria were tested: loss of body weight during feed deprivation and compensatory growth during re-feeding. Ten heterozygous rainbow trout clones were used. Individual intake and body weight were measured three times at three-week intervals. Then, individual body weight was recorded after two cycles of a three-week feed deprivation followed by a three-week re-feeding....
Tipo: Text
Palavras-chave: Selection; Indirect criteria; Residual feed intake; Clone; Rainbow trout.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/publication-4777.pdf

Combining vitassign and colony for pedigree reconstruction in a case of factorial mating with missing parental genotypes
Provedor de dados: 5
Autores: Allal, Francois; Doan, Q.k.; Chatain, Beatrice; Vergnet, Alain; Vandeputte, Marc.
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00306/41694/40971.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

Effects of fasting and re-alimentation on gill and intestinal morphology and indicators of osmoregulatory capacity in genetically selected sea bass (Dicentrarchus labrax) populations with contrasting tolerance to fasting
Provedor de dados: 5
Autores: Alix, Maud; Blondeau-bidet, Eva; Grousset, Evelyse; Shiranghi, Ainaz; Vergnet, Alain; Guinand, Bruno; Chatain, Beatrice; Boulo, Viviane; Lignot, Jehan-herve.
Fasting and refeeding occur naturally in predators but this is largely ignored when dealing with farmed fish. Therefore, the effects of 3-week fasting and re-alimentation (2.5% of the individual body mass) were investigated using two genetically selected populations (F2 generation) of 250 g juvenile sea bass (Dicentrarchus labrax L.). Blood osmolarity, gill and intestinal morphology and expression of the sodium pump (Na+, K+-ATPase, NKA) were studied on two phenotypes showing different degrees of body mass loss during food deprivation: one group losing body mass rapidly during fasting (F +) and the other one limiting body mass loss during the same period (F-).  Blood osmotic pressure significantly decreases due to re-alimentation in both groups, but this...
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00354/46521/46285.pdf

Estimation of body weight of European sea bass (Dicentrarchus labrax) and Nile tilapia (Oreochromis niloticus) larvae by image analysis
Provedor de dados: 5
Autores: De Verdal, Hugues; Vandeputte, Marc; Pepey, Elodie; Vidal, Marie-odile; Ouedraogo, C; Canonne, Marc; D'Cotta, Helena; Baroiller, Jean Francois; Baras, E; Chatain, Beatrice.
The present study aimed to develop nondestructive methods to accurately follow the growth of fish larvae and post-larvae. European sea bass (Dicentrarchus labrax) aged 71-100 days post fertilization (dpf; 20-419 mg) and Nile tilapia (Oreochromis niloticus) aged 14 dpf (10-25 mg) were used as model species. Several measurements were performed on digital pictures of larvae to model body weight. Using body surface area, contour, length and depth, it was possible to estimate accurately the body weight of young European sea bass and Nile tilapia (r² of 0.98 and 0.95, respectively).
Tipo: Text
Palavras-chave: Image analysis; Body weight; Surface area; European sea bass; Nile tilapia.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00205/31619/30045.pdf

First links between self-feeding behaviour and personality traits in European seabass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Ferrari, Sebastien; Benhaim, David; Colchen, Tatiana; Chatain, Beatrice; Begout, Marie-laure.
Most studies carried out with seabass under self-feeding conditions report an intriguing social structure that is built around the device and the food dispenser with three coexisting triggering categories: high-triggering (HT), low-triggering (LT) and zero-triggering (ZT) fish. However, neither sex nor feeding motivation or hierarchy can explain the establishment of this specialization. We characterised the personality of seabass with the commonly used restraint and open field tests and assessed the link between personality traits and individual triggering activity towards the self-feeder apparatus. We found no differences between triggering categories during the restraint test but high triggering fish were characterised as shyer than low- and...
Tipo: Text
Palavras-chave: Behaviour; Boldness; Foraging; Open field test; Restraint test; Teleost.
Ano: 2014
URL: https://archimer.ifremer.fr/doc/00216/32742/31147.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

Flow cytometric determination of genome size in European seabass (Dicentrarchus labrax), gilthead seabream (Sparus aurata), thinlip mullet (Liza ramada), and European eel (Anguilla anguilla)
Provedor de dados: 5
Autores: Peruzzi, Stefano; Chatain, Beatrice; Menu, Bruno.
The nuclear DNA content in Dicentrarchus labrax, Sparus aurata, Liza ramada, and Anguilla anguilla, was measured by flow cytometric analysis. Male human leukocytes were used as internal reference cells. Nucleated fish erythrocytes were stained simultaneously to human leukocytes with a staining buffer containing propidium iodide (PI). Nuclear DNA contents of target species were estimated in relation to an assigned value of 7.0 pg DNA for male human leukocytes. The DNA content/nucleus (+/- CI) was 1.55 +/- 0.02 pg for D. labrax, 1.90 +/- 0.03 pg for S. aurata, 1.57 +/- 0.02 pg for L. ramada, and 2.43 +/- 0.04 pg for A. anguilla. Intraspecific DNA content variations ranged from 0-9% and averaged around 4% in all taxa. The results did not evidence significant...
Tipo: Text
Palavras-chave: Anguilla anguilla; Liza ramada; Sparus aurata; Dicentrarchus labrax; Teleosts; DNA content.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-411.pdf

Quantifying the genetic parameters of feed efficiency in juvenile Nile tilapia Oreochromis niloticus
Provedor de dados: 5
Autores: De Verdal, Hugues; Vandeputte, Marc; Mekkawy, Wagdy; Chatain, Beatrice; Benzie, John A. H.
Background: Improving feed efficiency in fish is crucial at the economic, social and environmental levels with respect to developing a more sustainable aquaculture. The important contribution of genetic improvement to achieve this goal has been hampered by the lack of accurate basic information on the genetic parameters of feed efficiency in fish. We used video assessment of feed intake on individual fish reared in groups to estimate the genetic parameters of six growth traits, feed intake, feed conversion ratio (FCR) and residual feed intake in 40 pedigreed families of the GIFT strain of Nile tilapia, Oreochromis niloticus. Feed intake and growth were measured on juvenile fish (22.4g mean body weight) during 13 consecutive meals, representing 7days of...
Tipo: Text
Palavras-chave: Feed conversion ratio; Tilapia; Heritability; Genetic estimations; Correlations.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00469/58115/60551.pdf

Body shape variation in meiotic gynogenetic and triploid sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Peruzzi, Stefano; Wiborg-dahle, Stine; Haffray, Pierrick; Chatain, Beatrice; Primicerio, Raul.
A method of geometric morphometrics was used to characterize body shape variation in meiotic gynogenetic and triploid sea bass in comparison with diploid controls. A total of 13 coordinate landmark data were recorded on the profile of 34-month-old control (n = 81), gynogenetic (n = 117) and triploid (n = 131) siblings generated from two females (A and B). Three main axes of morphometric variation were consistent, and these accounted for 60.8 and 57.6% of the total variability in females A and B, respectively. There were significant shape deviations of triploid and gynogenetic fish relative to the controls, and differences were particularly evident in the progeny of one female. Overall, triploids displayed a more slender shape than diploids, whereas...
Tipo: Text
Palavras-chave: Body shape variability; Morphometry; Geometry of Procrustes distance; Triploidy; Gynogenesis; European sea bass; Dicentrarchus labrax.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00025/13651/10757.pdf

Combining Individual Phenotypes of Feed Intake With Genomic Data to Improve Feed Efficiency in Sea Bass
Provedor de dados: 5
Autores: Besson, Mathieu; Allal, Francois; Chatain, Beatrice; Vergnet, Alain; Clota, Frederic; Vandeputte, Marc.
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...
Tipo: Text
Palavras-chave: Aquaculture; Feed conversion ratio; Fine phenotyping; Genomic selection; Individual feed intake; Restricted feeding; Selective breeding.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00486/59799/62927.pdf

Estimates of heritability and genotype-environment interactions for body weight in sea bass (Dicentrarchus labrax L.) raised under communal rearing conditions
Provedor de dados: 5
Autores: Saillant, Eric; Dupont Nivet, Mathilde; Haffray, Pierrick; Chatain, Beatrice.
Genetic parameters for somatic growth rate in sea bass were estimated in two experiments where 27 (year-class 1997) to 30 (year-class 1998) families of sea bass (3 dams mated with 9-10 sires according to a full factorial design) were raised mixed in the same tanks starting shortly before hatching (48 h post fertilization). Trials were performed under two temperature (experiment 1, 1997: group high temperature (HT) and group low temperature (LT)) and two density regimes (experiment 2, 1998: group high density (HD) and group low density (LD)) with a subset of the mating design (18 families) being reproduced in the two experiments. All the fish were genotyped at 3-6 microsatellite loci which allowed them to be assigned to the individual breeders used in the...
Tipo: Text
Palavras-chave: Genotype x environment interaction; Communal rearing; Microsatellites markers; Dicentrarchus labrax; Growth; Heritability.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1706.pdf

Exploration behaviour and flight response toward a stimulus in three sea bass strains (Dicentrarchus labrax L.)
Provedor de dados: 5
Autores: Millot, Sandie; Begout, Marie-laure; Chatain, Beatrice.
Domestication and selection may affect fish behaviour, sometime as soon as at the first generation of domestication. However, knowledge about how both processes impact on fish spatial exploration and swimming activity still is to be improved. The objective of this experiment was (i) to evaluate spatial exploration behaviour and swimming activities of three sea bass strains having different domestication and selection levels and (ii) to analyse their responses to an acute stress. Sea bass exploration and swimming activities were studied before, during and 40 min after a stimulation (standardized fall of an object). The experimental tank was divided in to four zones, and the time spent, the distance travelled in each zone and the swimming complexity were...
Tipo: Text
Palavras-chave: Thigmotaxis; Risk assessment; Danger avoidance; Swimming activity; Personality; Selection; Domestication.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6458.pdf

Are there genotype-diet interactions for main production traits when fish are fed marine vs plant-based diets from the first meal ?
Provedor de dados: 5
Autores: Le Boucher, Richard; Quillet, Edwige; Vandeputte, Marc; Lecalvez, Jean Michel; Goardon, Lionel; Chatain, Beatrice; Medale, Francoise; Dupont Nivet, Mathilde.
Facing the finite size of fisheries resources, the important increase of aquaculture production during the last decades has led to the evolution of feed composition with an increasing substitution of fish meal and fish oil with terrestrial plant products. During the same period, selective breeding has been developed in fish and major improvements were achieved on growth, resulting in 4 to 20 % gain per fish generation (Olesen, Gjedrem, Bentsen et al. (2003); Chevassus, Quillet, Krieg et al. (2004)), and also on health and flesh quality traits.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00038/14908/12234.pdf

Genetic variation of resistance to Viral Nervous Necrosis and genetic correlations with production traits in wild populations of the European sea bass ( Dicentrarchus labrax )
Provedor de dados: 5
Autores: Khanh, Doan Quoc; Vandeputte, Marc; Chatain, Beatrice; Haffray, Pierrick; Vergnet, Alain; Breuil, Gilles; Allal, Francois.
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...
Tipo: Text
Palavras-chave: VNN disease; VNN resistance; Heritability; Genetic correlation.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00385/49612/50124.pdf

Coping styles in European sea bass: The link between boldness, stress response and neurogenesis
Provedor de dados: 5
Autores: Alfonso, Sebastien; Sadoul, Bastien; Gesto, Manuel; Joassard, Lucette; Chatain, Beatrice; Geffroy, Benjamin; Bégout, Marie-laure.
Coping styles consist of a coherent set of individual physiological and behavioral differences in stress responses that are consistent across time and context. Such consistent inter-individual differences in behavior have already been shown in European sea bass (Dicentrarchus labrax), but the associated mechanisms are still poorly understood. Here, we combine physiological measurements with individual behavioral responses in order to characterize coping styles in fish. Fish were tagged and placed in a tank for group risk-taking tests (GRT) at 8 months of age to evaluate boldness using the proxy latency of leaving a sheltered area towards an open area. A subsample of these fish were individually challenged 16 months later using an open field test (OFT), in...
Tipo: Text
Palavras-chave: Personality; HPI axis; Gene transcription; Neurotransmitters.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00491/60282/63708.pdf

Improving feed efficiency in fish using selective breeding: a review
Provedor de dados: 5
Autores: De Verdal, Hugues; Komen, Hans; Quillet, Edwige; Chatain, Beatrice; Allal, Francois; Benzie, John A. H.; Vandeputte, Marc.
Improving feed efficiency (FE) is key to reducing production costs in aquaculture and to achieving sustainability for the aquaculture industry. Feed costs account for 30–70% of total production costs in aquaculture; much work has been done on nutritional and husbandry approaches to improve FE but only a limited amount of research has been devoted to using genetics, despite its potential. This paper reviews past work to improve FE in fish using selective breeding and assess future directions. Direct selection on FE traits requires methods to measure individual feed consumption and estimate FE efficiently and accurately. This is particularly difficult to do in fish because of the environment in which they live. Many of the published studies on FE were found...
Tipo: Text
Palavras-chave: Feed conversion ratio; Feed efficiency; Feed intake; Fish; Genetics; Selection.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00415/52675/53771.pdf

Quantitative genetic variation for post-stress cortisol and swimming performance in growth-selected and control populations of European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Vandeputte, Marc; Porte, J. D.; Auperin, B.; Dupont-nivet, M.; Vergnet, Alain; Valotaire, C.; Claireaux, Guy; Prunet, P.; Chatain, Beatrice.
Sea bass is a major species in Mediterranean aquaculture, and is now being subject to selective breeding programs for faster growth. In terrestrial species, it was demonstrated that fast growth may be linked to a correlated degradation of fitness traits. In this experiment, we evaluated 600 young sea bass from a factorial mating of 76 sires and 13 dams. The sires were from four genetic groups, wild (W), domesticated (D), and selected for growth (2 groups, M and P). The 600 offspring were submitted to two acute confinement stress challenges at 6 weeks intervals, and plasma cortisol at one hour post stress was measured. The same fish were also submitted to two swimming challenges at a 5 days interval, where the maximum sustained swimming speed (Umax) of each...
Tipo: Text
Palavras-chave: Aquaculture; Selective breeding; Stress response; Maximum sustained swimming speed; Heritability; Correlated response.
Ano: 2016
URL: https://archimer.ifremer.fr/doc/00308/41955/41218.pdf

La sélection pour la vitesse de croissance a-t-elle un impact sur la tolérance au stress et la capacité de nage chez le bar ?
Provedor de dados: 5
Autores: Vandeputte, Marc; Porte, Jean-denis; Auperin, Benoît; Dupont Nivet, Mathilde; Vergnet, Alain; Valotaire, Claudiane; Claireaux, Guy; Prunet, Patrick; Chatain, Beatrice.
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00099/20976/18598.pdf

Viral encephalopathy and retinopathy in aquaculture: a review
Provedor de dados: 5
Autores: Doan, Q. K.; Vandeputte, Marc; Chatain, Beatrice; Morin, T; Allal, Francois.
Viral encephalopathy and retinopathy (VER), otherwise known as viral nervous necrosis (VNN), is a major devastating threat for aquatic animals. Betanodaviruses have been isolated in at least 70 aquatic animal species in marine and in freshwater environments throughout the world, with the notable exception of South America. In this review, the main features of betanodavirus, including its diversity, its distribution and its transmission modes in fish, are firstly presented. Then, the existing diagnosis and detection methods, as well as the different control procedures of this disease, are reviewed. Finally, the potential of selective breeding, including both conventional and genomic selection, as an opportunity to obtain resistant commercial populations, is...
Tipo: Text
Palavras-chave: Betanodavirus; Disease resistance; Genetics; Nervous necrosis virus; Selective breeding.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00350/46132/46024.pdf

In search for indirect criteria to improve residual feed intake in sea bass (Dicentrarchus labrax) Part I: Phenotypic relationship between residual feed intake and body weight variations during feed deprivation and re-feeding periods
Provedor de dados: 5
Autores: Grima, Laure; Vandeputte, Marc; Ruelle, Francois; Vergnet, Alain; Mambrini, Muriel; Chatain, Beatrice.
No commercial breeding programs have yet started to improve feed utilization efficiency in fish, mainly because of the difficulty in accurately measuring individual feed intake in fish reared in groups. Our general goal is to propose indirect criteria to be used for breeding of commercial lines. In a previous study undertaken with rainbow trout clones, a genetic correlation was detected between residual feed intake (RFI), and body weight variation during successive periods of feed deprivation (FD) and re-feeding (RF). To assess the pertinence of such indirect criteria for future breeding programs, we set up a large experiment using sea bass (Dicentrachus labrax), a recently domesticated species with broad genetic diversity. The objectives of the present...
Tipo: Text
Palavras-chave: European sea bass; Dicentrachus labrax; Feed efficiency; Residual feed intake; Feed deprivation; Compensatory growth; Selective breeding.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11297/7838.pdf

Combining Vitassign and Colony for pedigree reconstruction in a case of factorial mating with missing parental genotypes
Provedor de dados: 5
Autores: Allal, Francois; Doan, Q.k.; Chatain, Beatrice; Vergnet, Alain; Vandeputte, Marc.
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00281/39180/37742.pdf

In search for indirect criteria to improve feed utilization efficiency in sea bass (Dicentrarchus labrax) Part II: Heritability of weight loss during feed deprivation and weight gain during re-feeding periods
Provedor de dados: 5
Autores: Grima, Laure; Chatain, Beatrice; Ruelle, Francois; Vergnet, Alain; Launay, Amandine; Mambrini, Muriel; Vandeputte, Marc.
Selective breeding to improve residual feed intake (RFI) in sea bass (Dicentrarchus labrax) is a major goal that would optimize economic gain while minimizing the environmental impact of production. Due to the difficulty in accurately measuring individual feed intake, no selective breeding program has yet been started. In a previous study, we identified a criterion phenotypically related to RFI variations: the loss of weight during feed deprivation, FD. Moreover, an additional composite criterion (CC) integrating both FD and weight gain during subsequent re-feeding (RF) was closely related to RFI, even though the relationship was only close to significance (P=0.06). The aim of the present study was to estimate the heritability of these two traits, in order...
Tipo: Text
Palavras-chave: European sea bass; Dicentrarchus labrax; Feed efficiency; Heritability; Genetic parameters; Residual feed intake; Feed deprivation; Compensatory growth; Selective breeding.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00004/11529/8213.pdf

A new SNP-based vision of the genetics of sex determination in European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Palaiokostas, Christos; Bekaert, Michael; Taggart, John B.; Gharbi, Karim; Mcandrew, Brendan J.; Chatain, Beatrice; Penman, David J.; Vandeputte, Marc.
Background: European sea bass (Dicentrarchus labrax) is one of the most important farmed species in Mediterranean aquaculture. The observed sexual growth and maturity dimorphism in favour of females adds value towards deciphering the sex determination system of this species. Current knowledge indicates the existence of a polygenic sex determining determination system that interacts with temperature. This was explored by restriction-site associated DNA (RAD) marker analysis in a test panel of 175 offspring that originated from a factorial cross between two dams and four sires from a single full-sib family.  Results: The first high-density single nucleotide polymorphism (SNP) based linkage map for sea bass was constructed, consisting of 6706 SNPs on 24...
Tipo: Text
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00280/39095/37658.pdf

Individual growth monitoring of European sea bass larvae by image analysis and microsatellite genotyping
Provedor de dados: 5
Autores: De Verdal, Hugues; Vandeputte, Marc; Pepey, Elodie; Vidal, Marie-odile; Chatain, Beatrice.
The aims of the present study were to develop non-lethal methods to identify individual fish larvae and post-larvae before tagging and accurately follow their growth characteristics. European sea bass (Dicentrarchus labrax) was used as a model species at four different ages ranging from 71 to 100 days post fertilization (dpf). Two different methods were tested for non-lethal tissue sampling from each larva for DNA analysis: 1) using a sterile absorbent paper to sample mucus and/or epithelial cells by rubbing the fish skin and 2) fin-clip of the bottom part of the caudal fin. Whatever the age of the larvae, the genotyping rate (at 12 microsatellite markers) was low with the use of sterile absorbent paper but relatively high with fin-clip sampling at 80 and...
Tipo: Text
Palavras-chave: Individual identification; Image analysis; Body weight; Surface area; Perimeter; European sea bass larvae.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00211/32195/30748.pdf

Unpredictability in food supply during early life influences growth and boldness in European Seabass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Ferrari, Sebastien; Leguay, Didier; Vergnet, Alain; Vidal, Marie-odile; Chatain, Beatrice; Begout, Marie-laure.
Biological variability is no longer considered as statistical noise, but rather as an adaptive benefit. This variability comes from consistent differences in behavioral and physiological responses among individuals to a changing/challenging environment, named “coping style”, “temperament” or “personality”. Many studies have described how to characterize personality traits and how to assess their consistency over time and between different contexts; however, little is known about the environmental factors shaping personality development. Because contrasting personalities are maintained with evolution, this lead to the widespread assumption that genes play a predominant role in personality. In many cases, personality traits are however also likely to be...
Tipo: Text
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00333/44433/44100.pdf

Haematological and physiological characteristics of diploid and triploid sea bass, Dicentrarchus labrax L.
Provedor de dados: 5
Autores: Peruzzi, Stefano; Varsamos, Stamatis; Chatain, Beatrice; Fauvel, Christian; Menu, Bruno; Falguiere, Jean-claude; Severe, Armelle; Flik, Gert.
The purpose of this study was to determine whether diploid and triploid sea bass differed in terms of main haematological and physiological characteristics. Diploid and triploid fish were produced by sub-optimal pressure treatments and held in communal environments under standard rearing conditions. Total red blood cell count (RBCC), haemoglobin concentration (Hb), hematocrit (Hct), mean cell volume (MCV), mean cellular haemoglobin content (MCH), mean cell haemoglobin concentration (MCHC), plasma metabolites, osmotic pressure, gill Na+/K+-ATPase activity, electrolytes, cortisol, and 3,5,3'-triiodo-L-thyronine (T-3) were measured and compared. Triploidisation in sea bass led to an increase in erythrocyte size (32% in cytoplasm surface area, and 50% in...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Sea bass; Triploid; Diploid; Physiology; Haematology.
Ano: 2005
URL: https://archimer.ifremer.fr/doc/2005/publication-508.pdf

First Insight into Exploration and Cognition in Wild Caught and Domesticated Sea Bass (Dicentrarchus labrax) in a Maze
Provedor de dados: 5
Autores: Benhaim, David; Begout, Marie-laure; Lucas, Gael; Chatain, Beatrice.
European sea bass aquaculture is so recent that very little is known on the effects of the early steps of its domestication. Behavioural parameters are sensitive indicators of the domestication process since they are generally impacted as soon as the first generation. The present work compared wild-caught and domesticated sea bass juvenile swimming activity, exploration and ability to learn to discriminate between two 2-D objects associated to a simple spatial task that enabled the tested individual to visually interact with an unfamiliar congener (the reward) located behind a transparent wall at the end of one of the two arms of a maze. Ten fish from each origin were individually tested 3 times in a row during 3 days (9 trials in total). Fish were placed...
Tipo: Text
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00152/26306/24400.pdf

European sea bass - Dicentrarchus labrax
Provedor de dados: 5
Autores: Haffray, Pierrick; Tsigenopoulos, C.s.; Bonhomme, Francois; Chatain, Beatrice; Magoulas, Antonio; Rye, M; Triantafyllidis, A; Triantafyllidis, C.
Tipo: Text
Ano: 2007
URL: http://archimer.ifremer.fr/doc/00134/24535/22567.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

Effect of size grading on sea bass (Dicentrarchus labrax) juvenile self- feeding behaviour, social structure and culture performance
Provedor de dados: 5
Autores: Benhaim, David; Pean, Samuel; Brisset, Blandine; Leguay, Didier; Begout, Marie-laure; Chatain, Beatrice.
This study aims to test the influence of size grading on self-feeding behaviour, social structure (measured by the percentage of triggering acts per individual), growth performances, and blood physiological variables of individually passive integrated transponder (PIT)-tagged sea bass juveniles, using a computerized on-demand feeding system coupled with a PIT tag monitoring device. Three consecutive periods of 27 days each were compared: a first period (P1) before grading (6 tanks of 100 fish; 40.2 +/- 8.9 g) followed by a second period (P2) after grading. The protocol applied aimed to create two groups of fish of similar mean weight but with either a low or a high coefficient of variation of weight (CV(w)) corresponding to an imposed difference in social...
Tipo: Text
Palavras-chave: Feeding behaviour; Self feeder; Triggering activity; Heterogeneity; Growth; Grading.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00057/16858/14340.pdf

A first insight into genotype-diet interactions in European seabass (Dicentrarchus labrax) 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.
Tipo: Text
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00038/14907/12233.pdf

Genetic differences for behaviour in juveniles from two strains of brown trout suggest an effect of domestication history
Provedor de dados: 5
Autores: Benhaim, David; Guyomard, Rene; Chatain, Beatrice; Quillet, Edwige; Begout, Marie-laure.
Because captivity constitutes a drastic environmental change, domestication is expected to induce a rapid genetic selection for behavioural traits. In this study, we searched for genetic differences in behaviour among brown trout juveniles from two strains differing for their domestication history, i.e. an almost pure native wild Mediterranean population (W) and an Atlantic domesticated strain (D). In order to assess pure genetic differences among strains, males from the two origins were mated with Mediterranean females to produce two experimental crosses (WW and WD). The swimming activity characteristics of individual WW and WD juveniles were compared before and after the application of a stress (light switched off suddenly, followed by a 5-min period of...
Tipo: Text
Palavras-chave: Domestication; Genotyping; Microsatellite; Swimming activity; Restocking.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00152/26301/24409.pdf

Self-feeding behavior changes induced by a first and a second generation of domestication or selection for growth in the European sea bass, Dicentrarchus labrax
Provedor de dados: 5
Autores: Millot, Sandie; Pean, Samuel; Chatain, Beatrice; Begout, Marie-laure.
Among the strategies that can be used to improve fish welfare in a rearing environment, domestication and/or selective breeding was proposed to minimize fish responsiveness to husbandry practices. To verify this hypothesis on a recently domesticated species, the sea bass Dicentrarchus labrax, two experiments were realized, each using two populations differing according to their level of domestication or selection. For the first experiment, we used one population produced from wild parents (Wild; initial body mass: 106 +/- 3 g), and one population from parents selected for growth for one generation (Selected 1; initial body mass: 129 +/- 4 g). For the second experiment, we used one population produced from parents domesticated for two generations...
Tipo: Text
Palavras-chave: Feed intake; Feeding rhythm; Specific growth rate; Adaptation capacities; Fish welfare.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00035/14604/11924.pdf

Effect of selection for fasting tolerance on feed intake, growth and feed efficiency in the European sea bass Dicentrarchus labrax
Provedor de dados: 5
Autores: Daule, Sophie; Vandeputte, Marc; Vergnet, Alain; Guinand, Bruno; Grima, Laure; Chatain, Beatrice.
Feed efficiency is a major goal for aquaculture sustainability, and selecting fish to genetically enhance this trait would be highly valuable. However, no selective breeding program specifically targeted to feed efficiency exists for farmed fish, mostly because of the difficulty of measuring individual feed intake. However, a negative phenotypic correlation between feed efficiency and weight loss at fasting has been previously demonstrated in sea bass submitted to feed deprivation (FD). We mated sea bass parents selected for their high (FD+) or low (FD-) weight loss at fasting to produce FD+ and FD- progeny, which were reared in a single tank to avoid common environmental effects. At 8 months of age, 1200 of those fish were submitted to three alternating...
Tipo: Text
Palavras-chave: European sea bass; Dicentrarchus labrax; Selective breeding; Feed efficiency; Fasting tolerance.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00189/29985/28483.pdf

Physiological responses during acute stress recovery depend on stress coping style in European sea bass, Dicentrarchus labrax.
Provedor de dados: 5
Autores: Ferrari, Sebastien; Rey, Sonia; Høglund, Erik; Øverli, Øyvind; Chatain, Beatrice; Mackenzie, Simon; Bégout, Marie-laure.
Individual stress coping style (reactive, intermediate and proactive) was determined in 3 groups of 120 pit tagged European seabass using the hypoxia avoidance test. The same three groups (no change in social composition) were then reared according to the standards recommended for this species. Then, 127 days later, individuals initially characterized as reactive, intermediate or proactive were submitted to an acute confinement stress for 30 min. Blood samples were taken to measure plasma cortisol levels 30 min (Stress30) or 150 min (Stress150) after the end of the confinement stress. Individuals were then sacrificed to sample the telencephalon in order to measure the main monoamines and their catabolites (at Stress30 only). Individuals from Stress150 were...
Tipo: Text
Palavras-chave: Fish; Behavior; Physiology; Personality; Brain; Transcriptomic.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00601/71330/69760.pdf

Impact of a plant-based diet on behavioural and physiological traits in sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Benhaim, David; Begout, Marie-laure; Pean, Samuel; Manca, Michael; Prunet, Patrick; Chatain, Beatrice.
Replacing aquaculture feeds based on fisheries-derived resources with plant-based diets could be a relevant strategy to improve the sustainability of aquaculture. Recent studies on sea bass have shown that the total and early replacement of marine products by plant products would have a moderate effect on fish growth and body lipid content. Whether a plant-based diet impacts behavioural and physiological traits possibly linked to fish welfare, is not known, however. Here, we studied the effect of a totally plant-based diet introduced at an early stage of sea bass development on self-feeding behaviour, learning ability in a T-maze and stress biomarkers. We first compared learning processes in self-feeding conditions, between naive fish fed a plant-based...
Tipo: Text
Palavras-chave: Self-feeder; Plant-based diet; Learning; Exploratory behaviour; Cortisol; Dicentrarchus labrax.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00152/26309/24381.pdf

Genetic Inactivation of European Sea Bass (Dicentrarchus labrax L.) Eggs Using UV-Irradiation: Observations and Perspectives
Provedor de dados: 5
Autores: Colleter, Julie; Penman, David J.; Lallement, Stephane; Fauvel, Christian; Hanebrekke, Tanja; Osvik, Renate D.; Eilertsen, Hans C.; D'Cotta, Helena; Chatain, Beatrice; Peruzzi, Stefano.
Androgenesis is a form of uniparental reproduction leading to progenies inheriting only the paternal set of chromosomes. It has been achieved with variable success in a number of freshwater species and can be attained by artificial fertilization of genetically inactivated eggs following exposure to gamma (gamma), X-ray or UV irradiation (haploid androgenesis) and by restoration of diploidy by suppression of mitosis using a pressure or thermal shock. The conditions for the genetic inactivation of the maternal genome in the European sea bass (Dicentrarchus labrax L.) were explored using different combinations of UV irradiation levels and durations. UV treatments significantly affected embryo survival and generated a wide range of developmental abnormalities....
Tipo: Text
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00239/34996/33531.pdf

Enhanced brain expression of genes related to cell proliferation and neural differentiation is associated with cortisol receptor expression in fishes
Provedor de dados: 5
Autores: Sadoul, Bastien; Alfonso, Sebastien; Bessa, E.; Bouchareb, A.; Blondeau-bidet, E.; Clair, P.; Chatain, Beatrice; Begout, Marie-laure; Geffroy, Benjamin.
Stress enhances or inhibits neurogenesis in mammals and some fish species. The link between the two processes is still unclear. Most studies have been performed in very specific stressful or altered environments. Despite the known inter-individual divergence in coping abilities within populations, the relationship between the stress axis and neurogenesis has never been addressed in unstressed individuals. Here we correlate brain expression of the pcna (proliferating cell nuclear antigen) and neurod1 (neurogenic differentiation factor 1) genes, two markers of neurogenesis, with transcripts of cortisol receptors in three fish species living in very distinct environments. Within the three species, individuals with the highest expression of neurogenesis genes...
Tipo: Text
Palavras-chave: Neurogenesis; Stress; Glucocorticoid receptor; Mineralocorticoid receptor; Hypothalamo-pituitary-interrenal axis.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00444/55560/57164.pdf

A medium-throughput method to phenotype fish for individual feed efficiency
Provedor de dados: 5
Autores: Besson, Mathieu; Allal, Francois; Chatain, Beatrice; Vergnet, Alain; Clota, Frederic; Ferrari, Sebastien; Vandeputte, Marc.
Tipo: Text
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00446/55752/57413.pdf

Reproductive behaviour of two tilapia species ( Oreochromis niloticus , Linné, 1758; Sarotherodon melanotheron, Rüppel, 1852) in freshwater intra and interspecific pairing context
Provedor de dados: 5
Autores: Akian, Dieudonne; Yao, Kouakou; Clota, Frederic; Lozano, Paul; Baroiller, Jean Francois; Chatain, Beatrice; Begout, Marie-laure.
Nile tilapia Oreochromis niloticus (NT) and Black-chinned tilapia Sarotherodon melanotheron (BCT) are respectively characterized by fast growth and water salinity tolerance which attract the farmers who could take advantage of both species characteristics by producing hybrids reared in brackish or marine waters. Little information is however available about social interactions between the two species which are distinct by their mode of parental care (oral incubation). The objective of this study was to determine the behaviour of the two species, NT and BCT placed in freshwater intraspecific and interspecific pairing contexts. Females of both species (n = 20 per species) were first isolated for 90 days in a 60 L aquarium to determine the average duration...
Tipo: Text
Palavras-chave: Aggression; Hybridization; Reproduction; Oreochromis niloticus; Sarotherodon melanotheron; Freshwater.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00376/48673/49008.pdf

Plant-based diet in trout (O. mykiss): are there genotype-diet interactions for main production traits when fish are fed marine vs plant-based diets from the first meal ?
Provedor de dados: 5
Autores: Le Boucher, Richard; Quillet, Edwige; Vandeputte, Marc; Le Calvez, J. M.; Goardon, L.; Chatain, Beatrice; Medale, Francoise; Dupont Nivet, Mathilde.
To face future decrease of marine resources, replacement of fishmeal and fish oil by plant products is nowadays worldwide priority for the aquaculture of carnivorous fish, especially salmonids. Genetic variability has been recently evidenced for growth ability on plant-based diet and pointed out potential genetic gains. In a context of fast feed evolution, this work compares heritabilities of growth parameters between rainbow trout fed with diet containing fish oil and fish meal and fish fed on diet devoid of marine products. Assessment of genotype diet interaction informs on potential family reranking between diets and potential consequences on current breeding programmes.
Tipo: Text
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00015/12614/9493.pdf

Problems related to the lack of functional swimbladder in intensive rearing of the seabass Dicentrarchus labrax and the sea bream Sparus auratus .
Provedor de dados: 5
Autores: Chatain, Beatrice.
The primordial inflation of swimbladder normally occurs at a size of 4 to 5 mm in sea bream Sparus auratus and 5 to 6 mm in sea bass Dicentrarchus labrax . However, in intensive larval rearing conditions, lack of inflation is often observed and leads to the production of up to 80% of postlarvae whose swimbladder is not functional. They are, on the average, 20-30% smaller in weight than normal fry. Their survival rate can also be reduced by any kind of stress such as weaning, handling or hypoxic conditions. It is suggested that the selective mortality which affects the abnormal fish results both from a decrease in predatory efficiency and an increase in energetic needs.
Tipo: Text
Palavras-chave: Sparus aurata; Sparidae; Dicentrarchus labrax; Serranidae; Teleostei; Pisces; Genetic abnormalities; Hatching; Swim bladder; Growth; Larvae; Survival; Intensive culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1432.pdf

The shy prefer familiar congeners
Provedor de dados: 5
Autores: Benhaim, David; Ferrari, Sebastien; Chatain, Beatrice; Begout, Marie-laure.
The shy–bold continuum is both a fundamental aspect of human behavior and a relatively stable behavioral trait for many other species. Here we assessed whether shy individuals prefer familiar congeners, taking the European sea bass, a recently domesticated fish showing similar behavioral responses to wild fish, as a model to better understand the inter-individual variability in social behavior previously observed in this species. In the wild, the link between familiarity i.e. the preference of fish for familiar congeners and boldness could be part of the mechanism underlying shoaling formation in fish. Thirty fish were individually tested in a device designed to assess the preference for a familiar vs. an unfamiliar congener on the basis of visual cues...
Tipo: Text
Palavras-chave: Familiarity; Personality; Open field; Social behavior; Swimming activity; Shyness; Shoaling behavior; Visual cue.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00319/43049/42554.pdf

Tank wall colour and light level affect growth and survival of Eurasian perch larvae (Perca fluviatilis L.)
Provedor de dados: 5
Autores: Tamazouzt, Lakhdar; Chatain, Beatrice; Fontaine, Pascal.
The influence of interaction between light intensity and tank wall colours on survival and growth of perch larvae (Perca fluviatilis L.) was investigated for 15 days after hatching. Three light intensities (250, 400 and 800 Ix) and four wall colours (black, dark grey, light grey and white) were used. At the end of the experiment, survival rates ranged between 1% and 26%, and varied according to the different treatments (P = 0.0001; df = 11). A global effect of light intensity was detected(P = 0.0001; df = 2) and the highest survival rate was observed under 250 Ix. Survival was also influenced by the tank wall colour(P = 0.0001; df = 3): light grey showed the best result (17%). The greatest growth in weight and length was observed in tanks with light grey...
Tipo: Text
Palavras-chave: Growth; Survival; Light level; Tank colour; Larvae; Eurasian perch.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/publication-505.pdf

A polygenic hypothesis for sex determination in the European sea bass - Dicentrarchus labrax
Provedor de dados: 5
Autores: Vandeputte, Marc; Dupont Nivet, M; Chavanne, H; Chatain, Beatrice.
Polygenic sex determination, although suspected in several species, is thought to be evolutionarily unstable and has been proven in very few cases. In the European sea bass, temperature is known to influence the sex ratio. We set up a factorial mating, producing 5.893 individuals from 253 full-sib families, all reared in a single batch to avoid any between-families environmental effects. The proportion of females in the offspring was 18.3%, with a large variation between families. Interpreting sex as a threshold trait, the heritability estimate was 0.62 +/- 0.12. The observed distribution of family sex ratios was in accordance with a polygenic model or with a four-sex-factors system with environmental variance and could not be explained by any genetic...
Tipo: Text
Palavras-chave: Dicentrarchus labrax; Fish; Growth; Heritability; Sex ratio.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3526.pdf

Estimation of genetic parameters of feed conversion ratio based on individual phenotypes and genomic data in sea bass
Provedor de dados: 5
Autores: Besson, Mathieu; Allal, Francois; Chatain, Beatrice; Vergnet, Alain; Clota, Frederic; Ferrari, Sebastien; Vandeputte, Marc.
We estimated genetic parameters of feed conversion ratio (FCR) and daily growth coefficient (DGC) using individual phenotypes measured in aquariums under a restricted feeding regime and genomic information on 2,722 SNP markers. The results showed a moderate heritability of both traits (0.26 for FCR and 0.41 for DGC) as well as close to unity negative genetic correlation between them. Thus, FCR of fish in aquariums could be improved by selecting fish for higher DGC. Nevertheless, these results must be taken with caution until we know whether individual FCR measured in aquariums also reflects the FCR of fish reared in groups.    
Tipo: Text
Palavras-chave: Feed efficiency; Fish; Genomics.
Ano: 2018
URL: http://archimer.ifremer.fr/doc/00446/55756/57416.pdf

Physiological mechanisms underlying a trade-off between growth rate and tolerance of feed deprivation in the European sea bass (Dicentrarchus labrax)
Provedor de dados: 5
Autores: Dupont-prinet, A.; Chatain, Beatrice; Grima, L.; Vandeputte, Marc; Claireaux, Guy; Mckenzie, David.
The specific growth rate (SGR) of a cohort of 2000 tagged juvenile European sea bass was measured in a common tank, during two sequential cycles comprising three-weeks feed deprivation followed by three-weeks ad libitum re-feeding. After correction for initial size at age as fork length, there was a direct correlation between negative SGR (rate of mass loss) during feed deprivation and positive SGR (rate of compensatory growth) during re-feeding (Spearman rank correlation R=0.388, P=0.000002). Following a period of rearing under standard culture conditions, individuals representing 'high growth' phenotypes (GP) and 'high tolerance of feed deprivation' phenotypes (DP) were selected from either end of the SGR spectrum. Static and swimming respirometry could...
Tipo: Text
Palavras-chave: Aerobic scope; Compensatory growth; Specific dynamic action; Specific growth rate; Standard metabolic rate.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11283/8517.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