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A comparative field study of growth, survival and reproduction of Crassostrea gigas, C-angulata and their hybrids ArchiMer
Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Boudry, Pierre.
This paper reports a comparative study of two cupped oysters, Crassostrea gigas and C angulata, and their hybrids reared in the Marennes-Oleron Sound (France) under usual farming conditions. The relative proficiency of these species was characterized in terms of growth, survival and reproduction, three major concerns for oyster farming. Four populations of each taxon were sampled (C gigas: Japan and France; C angulata: Taiwan and Spain) and used as progenitors to produce six different progenies under common hatchery and nursery conditions (transfer of 5 to 6 g of seed oysters at sea and rearing in bags for 2 years). Mortality profiles differed greatly among the progenies. The C angulata progeny of Taiwanese origin gave the poorest results, with 100%...
Tipo: Text Palavras-chave: Atlantic coast; Crassostrea gigas; Phenotypes; Hybrids; Oyster fanning.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-560.pdf
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A Functional Study of Transforming Growth Factor-Beta from the Gonad of Pacific Oyster Crassostrea gigas ArchiMer
Corporeau, Charlotte; Groisillier, Agnes; Jeudy, Alexandra; Barbeyron, Tristan; Fleury, Elodie; Fabioux, Caroline; Czjzek, Mirjam; Huvet, Arnaud.
The transforming growth factor (TGF)-beta superfamily is a group of important growth factors involved in multiple processes such as differentiation, cell proliferation, apoptosis and cellular growth. In the Pacific oyster Crassostrea gigas, the oyster gonadal (og) TGF-beta gene was recently characterized through genome-wide expression profiling of oyster lines selected to be resistant or susceptible to summer mortality. Og TGF-beta appeared specifically expressed in the gonad to reach a maximum when gonads are fully mature, which singularly contrasts with the pleiotropic roles commonly ascribed to most TGF-beta family members. The function of og TGF-beta protein in oysters is unknown, and defining its role remains challenging. In this study, we develop a...
Tipo: Text Palavras-chave: Transforming growth factor-beta; Bacterial expression; In vivo antibody inhibition; Reproduction; Crassostrea gigas; Marine bivalve.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00042/15371/13438.pdf
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A Microarray-Based Analysis of Gametogenesis in Two Portuguese Populations of the European Clam Ruditapes decussatus ArchiMer
Sousa, Joana; Milan, Massimo; Bargelloni, Luca; Pauletto, Marianna; Matias, Domitilia; Joaquim, Sandra; Matias, Ana Margarete; Quillien, Virgile; Leitao, Alexandra; Huvet, Arnaud.
The European clam, Ruditapes decussatus is a species with a high commercial importance in Portugal and other Southern European countries. Its production is almost exclusively based on natural recruitment, which is subject to high annual fluctuations. Increased knowledge of the natural reproductive cycle of R. decussatus and its molecular mechanisms would be particularly important in providing new highly valuable genomic information for better understanding the regulation of reproduction in this economically important aquaculture species. In this study, the transcriptomic bases of R. decussatus reproduction have been analysed using a custom oligonucleotide microarray representing 51,678 assembled contigs. Microarray analyses were performed in four gonadal...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29935/28623.pdf
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A microarray-based analysis of oocyte quality in the European clam Ruditapes decussatus ArchiMer
De Sousa, Joana Teixeira; Milan, Massimo; Pauletto, Marianna; Bargelloni, Luca; Joaquim, Sandra; Matias, Domitilia; Matias, Ana Margarete; Quillien, Virgile; Leitao, Alexandra; Huvet, Arnaud.
A microarray-based analysis was performed with the objective of describing genomic features of oocytes and looking for potential markers of oocyte quality in the economically important European clam, Ruditapes decussatus. Oocytes of 25 females from Ria de Aveiro, Western coast of Portugal (40°42′N; 08°40′W) were selected for this study and oocyte quality was estimated by success of D-larval rate under controlled conditions, which appeared to vary from 0 to 95 %. By genome-wide expression profiling with a DNA microarray, 526 probes appeared differentially expressed between two groups representing the largest and smallest value of D larval rates, named good (represented by a mean D-larval yield of 57 ± 22%) and poor (9 ± 5%) quality oocytes. Enrichment...
Tipo: Text Palavras-chave: Ruditapes decussatus; Oocyte; Developmental success; Gene expression; Marine bivalve; Transcriptomics.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00260/37147/35676.pdf
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A semi-automated Raman micro-spectroscopy method for morphological and chemical characterizations of microplastic litter ArchiMer
Frere, L.; Paul-pont, I.; Moreau, Julien; Soudant, P.; Lambert, C.; Huvet, Arnaud; Rinnert, Emmanuel.
Every step of microplastic analysis (collection, extraction and characterization) is time-consuming, representing an obstacle to the implementation of large scale monitoring. This study proposes a semi-automated Raman micro-spectroscopy method coupled to static image analysis that allows the screening of a large quantity of microplastic in a time-effective way with minimal machine operator intervention. The method was validated using 103 particles collected at the sea surface spiked with 7 standard plastics: morphological and chemical characterization of particles was performed in < 3 h. The method was then applied to a larger environmental sample (n = 962 particles). The identification rate was 75% and significantly decreased as a function of particle...
Tipo: Text Palavras-chave: Microplastics; Raman micro-spectroscopy; Surface seawater; Morphology; Environmental monitoring; Automating.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00357/46802/46976.pdf
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Acclimatation de nouvelles espèces d'huîtres creuse du genre Crassostrea: hybridation et conservatoire de souches - Contrat de Plan Etat Région Poitou-Charentes 1994-1998 - Synthèse finale ArchiMer
Boudry, Pierre; Heurtebise, Serge; Huvet, Arnaud; Chollet, Bruno; Ledu, Christophe; Phelipot, Pascal; Gerard, Andre.
Actions menées de 1994 à 1998 au sein du conservatoire de souches : 1. Résultats des importations, acclimatation et hybridation. a) Rappel des conditions d'introduction de nouvelles souches. L'importation de toute espèce est conditionnée par les résultats d'une enquête préliminaire dont l'objet est de rechercher les exigences écologiques de l'espèce et la situation épidémiologique dans son milieu d'origine. Le travail du LGP et de ses partenaires a été partagé en différentes actions: 1. Recherche de contacts dans divers pays étrangers, en vue de l'importation d'huîtres présentant des caractéristiques intéressantes. 2. Importation : L'importation se fait selon les normes du CIEM (Conseil International pour l'Exploration de la Mer) : contrôles pathologiques...
Tipo: Text Palavras-chave: Génétique; Acclimatation; Hybridation; Marqueurs moléculaire; Marqueurs populations; Crassostrea.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00044/15520/12907.pdf
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Additive transcriptomic variation associated with reproductive traits suggest local adaptation in a recently settled population of the Pacific oyster, Crassostrea gigas ArchiMer
Sussarellu, Rossana; Huvet, Arnaud; Lapegue, Sylvie; Quillen, Virgile; Lelong, Christophe; Cornette, Florence; Jensen, Lasse Fast; Bierne, Nicolas; Boudry, Pierre.
Background Originating from Northeast Asia, the Pacific oyster Crassostrea gigas has been introduced into a large number of countries for aquaculture purpose. Following introduction, the Pacific oyster has turned into an invasive species in an increasing number of coastal areas, notably recently in Northern Europe. Methods To explore potential adaptation of reproductive traits in populations with different histories, we set up a common garden experiment based on the comparison of progenies from two populations of Pacific oyster sampled in France and Denmark and their hybrids. Sex ratio, condition index and microarray gene expression in gonads, were analyzed in each progeny (n = 60). Results A female-biased sex-ratio and a higher condition index were...
Tipo: Text Palavras-chave: Crassostrea gigas; Adaptation; Invasiveness; Fertility; Sex-ratio; Transcriptome; Microarray.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00287/39829/38343.pdf
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Amylase polymorphism affects growth in the cupped oyster Crassostrea gigas ArchiMer
Huvet, Arnaud; Samain, Jean-francois; Boudry, Pierre; Bedier, Edouard; Ropert, Michel; Van Wormhoudt, A..
The better understanding of physiological and environmental factors that determine optimal food conversion efficiencies is of major interest for the cupped oyster Crassostrea gigas for which the strong increase of aquaculture has been correlated in France with a decrease in productivity due to competition between aquatic species for limited food supplies at grow-out sites. To investigate the non-neutrality of the polymorphism of amylase, a key enzyme for carbohydrate assimilation, in oyster physiology, we report in the present paper the growth and survival measurement of amylase genotypes within five bi-parental C. gigas families, bred to be polymorph at the two PCR-RFLP amylase markers, and reared over one year under standard culture conditions in two...
Tipo: Text Palavras-chave: Amylase markers; Growth; Amylase Polymorphism; Genetic; Oysters; Crassostrea gigas.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3311.pdf
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An amylase gene polymorphism is associated with growth differences in the Pacific cupped oyster Crassostrea gigas ArchiMer
Prudence, Marie; Moal, Jeanne; Boudry, Pierre; Daniel, Jean-yves; Quere, Claudie; Jeffroy, Fanny; Mingant, Christian; Ropert, Michel; Bedier, Edouard; Van Wormhoudt, A; Samain, Jean-francois; Huvet, Arnaud.
This study investigated the non-neutrality of genetic polymorphism in two alpha-amylase genes (AMYA and AMYB) in the oyster Crassostrea gigas. Bi-parental oyster families, bred to be polymorphic for markers in these genes, were monitored for growth and survival for 1 year under standard culture conditions in two French production sites. Within-family genotype frequencies indicated that the two amylase genes were closely linked (c. 1.7 cM). Within two of three families, significant differences in growth were observed between genotypes at one of the two production sites, suggesting that this polymorphism is not neutral and might be under selection because of its role in digestive function. Estimated daily yields were different between amylase genotypes,...
Tipo: Text Palavras-chave: Growth; Genotype; Digestive enzyme; Bivalve; Alpha amylase.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1691.pdf
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Approche comparative de la variabilité et de la structuration génétique chez deux espèces d'huîtres cultivées (Crassostrea gigas et Ostrea edulis) présentant des stratégies reproductives et des histoires contrastées ArchiMer
Boudry, Pierre; Launey, Sophie; Huvet, Arnaud.
The two common oyster species cultivated in Europe are the flat oyster Ostrea edulis and the cupped oyster Crassostrea gigas. These species have two really different reproduction strategies (oviparity versus larviparity) and histories (natural distribution versus introductions linked to oyster culture). We used microsatellite markers to compare the observed variabilities Europe wide. O. edulis presents a lower rate of alleles per locus than C. gigas. The observed structuration levels (global Fst and by pairs values) are similar for both species, but the spatial organisation of the diversity is different. In O. edulis, appears a differentiation based on the distance (concordance of the results with those obtained with the allozymes) whereas in C. gigas,...
Tipo: Text Palavras-chave: Différenciation génétique; Variabilité; Génétique; Crassostrea gigas; Ostrea edulis; Huîtres.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/acte-3455.pdf
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Assessment of oocyte and trochophore quality in Pacific oyster, Crassostrea gigas ArchiMer
Boulais, Myrina; Corporeau, Charlotte; Huvet, Arnaud; Bernard, Ismael; Quere, Claudie; Quillien, Virgile; Fabioux, Caroline; Suquet, Marc.
Pacific oyster hatchery production remains highly variable, partially due to inconsistent gamete quality. However, little attention has been paid to oocyte quality in Pacific oyster compared to important vertebrate aquaculture species such as fishes. The aims of the present study were to identify criteria of oocyte and trochophore quality used as predictive tools for embryo developmental success at the D-larval stage. Twenty-six potential proxies of oocyte and trochophore quality were studied on 25 mature females, as determined using histology. Some morphological and biochemical characteristics of mature oocytes were described. Protein appeared to be the main constituent of fully mature Pacific oyster oocytes. Neutral lipids accounted for 61% of the total...
Tipo: Text Palavras-chave: Crassostrea gigas; Oocyte quality; Trochophore; Lipid; Gene expression; ATP.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00239/35010/33544.pdf
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Association among growth, food consumption-related traits and amylase gene polymorphism in the Pacific oyster Crassostrea gigas ArchiMer
Huvet, Arnaud; Jeffroy, F; Fabioux, C; Daniel, Jean-yves; Quillien, Virgile; Van Wormhoudt, A; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre; Pouvreau, Stephane.
To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to...
Tipo: Text Palavras-chave: Ingestion; Gene expression; Bivalve; Alpha amylase.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-5165.pdf
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BABE : Comparaison des sites de Ronce et Baie de Veys, incidence sur la reproduction et les mortalités : Ecologie côtière, mortalités, croissance, environnement - Physiologie - Immunologie ArchiMer
Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Guilpain, Patrice; Geairon, Philippe; Razet, Daniel; Seugnet, Jean-luc; Robert, Stephane; Ropert, Michel; Simonne, Charlotte; Hugonnet, Virginie; Moal, Jeanne; Pouvreau, Stephane; Huvet, Arnaud; Samain, Jean-francois; Lambert, Christophe; Soudant, Philippe; Frouel, Stephane; Choquet, Gwenaelle; Delaporte, Maryse; Paillard, Christine.
Four laboratories are involved in this multidisciplinary study: the Conchological Laboratory of Normandie (LCN), the Invertebrates Physiology Laboratory (LPI), the Université Bretagne Occidentale (LEMAR IHP) and the Conchological Laboratory of Poitou-Charentes (LCPC). The part of the study which is presented here (thematics "Coastal ecology") was produced in collaboration with the LCN. The data on the Bay of Veys was collected by Michel Ropert. This study aims at observing the "sites" effect on mortality and on the general biology of the animal, as well as measuring some environmental elements (e.g. water temperature, etc.). The geographical sites are Gefosse in the Bay of Veys (East Cotentin) and the Ronce bank in the south of the Marennes Oléron Bay. The...
Tipo: Text Palavras-chave: Immunologie; Physiologie; Paramètres environnementaux; Croissance; Ecologie côtière; Baies des Veys Cotentin; Ronce Charente Maritime; Comparaison sites; Reproduction; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/acte-3405.pdf
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Bilan des « Journées Surmortalité des huîtres creuses, Crassostrea gigas » du Programme P7 « Aquaculture Durable » des 8 et 9 décembre 2009 ArchiMer
Cochennec-laureau, Nathalie; Baud, Jean-pierre; Bedier, Edouard; Boudry, Pierre; Huvet, Arnaud; Nicolas, Jean-louis; Pepin, Jean-francois; Petton, Bruno.
Ce bilan comprend deux parties : la première est dédiée à une synthèse des travaux présentés lors des journées « Surmortalités des huîtres creuses, Crassostrea gigas » les 8 et 9 décembre 2009 et, la seconde partie, à une proposition d'un projet de recherche spécifique 2010-2012 en complément des propositions de « sortie de crise ». Contexte Les mortalités estivales de l'huître creuse, Crassostrea gigas, sont décrites depuis une vingtaine d'années en France mais également au Japon, en Corée, aux USA et en Australie. Ces phénomènes ou « syndrome des mortalités estivales » ont fait l'objet d'une étude pluridisciplinaire en France entre 2001 et 2006 (Défi MOREST). Toutefois, en 2008 et 2009, l'ostréiculture française a du faire face à deux épisodes de...
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Ano: 2010 URL: http://archimer.ifremer.fr/doc/2010/acte-7393.pdf
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Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters ArchiMer
Castrec, Justine; Soudant, P.; Payton, L.; Tran, D.; Miner, Philippe; Lambert, C.; Le Goic, N.; Huvet, Arnaud; Quillien, Virgile; Boullot, F.; Amzil, Zouher; Hegaret, Helene; Fabioux, C..
Blooms of the dinoflagellate Alexandrium spp., known as producers of paralytic shellfish toxins (PSTs), are regularly detected on the French coastline. PSTs accumulate into harvested shellfish species, such as the Pacific oyster Crassostrea gigas, and can cause strong disorders to consumers at high doses. The impacts of Alexandrium minutum on C. gigas have often been attributed to its production of PSTs without testing separately the effects of the bioactive extracellular compounds (BECs) with allelopathic, hemolytic, cytotoxic or ichthyotoxic properties, which can also be produced by these algae. The BECs, still uncharacterized, are excreted within the environment thereby impacting not only phytoplankton, zooplankton but also marine invertebrates and...
Tipo: Text Palavras-chave: Harmful algal bloom (HAB); Crassostrea gigas; Paralytic shellfish toxins (PST); Bioactive extracellular compounds (BEC); Histology; Behavior.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00435/54637/56042.pdf
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Caractérisation sur estran des performances de croissance, maturation et survie des deux-taxons d'huîtres creuses C. gigas et C. angulata, hybrides et "exotiques" ArchiMer
Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Goulletquer, Philippe; Faury, Nicole.
This study presents the zootechnical performances in their natural habitat, the Marennes Oléron Bay, of two Crassostrea gigas and Crassostrea angulata taxons of European and Asian origin, as well as those of their "European" hybrids (6 studied strains). Growth performance seems to be a phenotypic characterisation linked with the maternal origin (c. gigas or C. angulata). The Asian "pure gigas" or "pure angulata" strains' growth performances differ more from those of their European "sisters" than the European taxons with their hybrids. The C. angulata strain, of Taiwanese origin, does not survive the second culture week in the Marennes Oléron Bay. The C. angulata strain seems to "carry" a strong mortality potential. After 6 months of off-bottom culture, the...
Tipo: Text Palavras-chave: Survie; Performance croissance; Hybrides; Zootechnie; Crassostrea angulata; Crassostrea gigas; Huîtres.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/acte-3382.pdf
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Cellular and molecular hemocyte responses of the Pacific oyster, Crassostrea gigas, following bacterial infection with Vibrio aestuarianus strain 01/32 ArchiMer
Labreuche, Yannick; Lambert, Christophe; Soudant, Philippe; Boulo, Viviane; Huvet, Arnaud; Nicolas, Jean-louis.
The strategies used by bacterial pathogens to circumvent host defense mechanisms remain largely undefined in bivalve molluscs. In this study, we investigated experimentally the interactions between the Pacific oyster (Crassostrea gigas) immune system and Vibrio aestuarianus strain 01/32, a pathogenic bacterium originally isolated from moribund oysters. First, an antibiotic-resistant V. aestuarianus strain was used to demonstrate that only a limited number of bacterial cells was detected in the host circulatory system, suggesting that the bacteria may localize in some organs. Second, we examined the host defense responses to V. aestuarianus at the cellular and molecular levels, using flow-cytometry and real-time PCR techniques. We showed that hemocyte...
Tipo: Text Palavras-chave: Crassostrea gigas; Oyster; Pathogenesis; Vibrio aestuarianus; Bivalve immunity.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2182.pdf
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Cellular responses of Pacific oyster ( Crassostrea gigas ) gametes exposed in vitro to polystyrene nanoparticles ArchiMer
Gonzalez-fernandez, Carmen; Tallec, Kevin; Le Goic, Nelly; Lambert, Christophe; Soudant, Philippe; Huvet, Arnaud; Suquet, Marc; Berchel, Mathieu; Paul-pont, Ika.
While the detection and quantification of nano-sized plastic in the environment remains a challenge, the growing number of polymer applications mean that we can expect an increase in the release of nanoplastics into the environment by indirect outputs. Today, very little is known about the impact of nano-sized plastics on marine organisms. Thus, the objective of this study was to investigate the toxicity of polystyrene nanoplastics (NPs) on oyster (Crassostrea gigas) gametes. Spermatozoa and oocytes were exposed to four NPs concentrations ranging from 0.1 to 100 mg L−1 for 1, 3 and 5 h. NPs coated with carboxylic (PS-COOH) and amine groups (PS-NH2) were used to determine how surface properties influence the effects of nanoplastics. Results demonstrated the...
Tipo: Text Palavras-chave: Nanoplastics; Oysters; Gametes; Cellular responses.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00443/55459/56976.pdf
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Characterization of a gonad-specific transforming growth factor-beta superfamily member differentially expressed during the reproductive cycle of the oyster Crassostrea gigas ArchiMer
Fleury, Elodie; Fabioux, Caroline; Lelong, C; Favrel, P; Huvet, Arnaud.
Through differential screening between oyster families selected for high and low summer survival, we have characterized a new transforming growth factor-beta (TGF-beta) superfamily member. This novel factor, named oyster-gonadal-TGF beta-like (og-TGF beta-like), is synthesized as a 307 amino acid precursor and displays 6 of the 7 characteristic cysteine residues of the C-terminal, mature peptide. Sequence comparison revealed that og-TGF beta-like has a low percentage of identity with other known TGF-beta superfamily members, suggesting that og-TGF beta-like is a derived member of this large superfamily. Real-time PCR (RT-PCR) analysis in different oyster tissues showed that og-TGF beta-like is specifically expressed in both male and female gonads, at...
Tipo: Text Palavras-chave: Reproduction; Oyster; Gene expression; Transforming growth factor; Bivalve mollusc.
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/publication-3899.pdf
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Characterization of a gonad-specific transforming growth factor-β superfamily member differentially expressed during the reproductive cycle of the oyster Crassostrea gigas ArchiMer
Fleury, Elodie; Fabioux, Caroline; Lelong, Christophe; Favrel, Pascal; Huvet, Arnaud.
To study the complex and non identified host causes of summer mortality in C. gigas, divergent selection criteria based upon summer survival have been applied to produce resistant (R) and susceptible (S) oysterfamilies(Samain et al., 2007). A previous analysis by suppression-subtractive hybridization has characterized 46 differentially-expressedcDNAsbetween R and S families(Huvet et al., 2004). The present study reports the screening, using nylon array, of the 46 oyster SSHcDNAsfrom R and S selected families. Among the few differentially expressed genes characterized between R and S samples, one encodes a Transforming-Growth-Factor-β-related (TGFβ) protein. Members of the TGFβsuperfamily are critical growth factors regulating a variety ofimportant...
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Ano: 2007 URL: http://archimer.ifremer.fr/doc/00083/19425/17036.pdf
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