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Registros recuperados: 23
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A DNA barcode reference library of French Polynesian shore fishes ArchiMer
Delrieu-trottin, Erwan; Williams, Jeffrey T.; Pitassy, Diane; Driskell, Amy; Hubert, Nicolas; Viviani, Jeremie; Cribb, Thomas H.; Espiau, Benoit; Galzin, Rene; Kulbicki, Michel; De Loma, Thierry Lison; Meyer, Christopher; Mourier, Johann; Mou-tham, Gerard; Parravicini, Valeriano; Plantard, Patrick; Sasal, Pierre; Siu, Gilles; Tolou, Nathalie; Veuille, Michel; Weigt, Lee; Planes, Serge.
The emergence of DNA barcoding and metabarcoding opened new ways to study biological diversity, however, the completion of DNA barcode libraries is fundamental for such approaches to succeed. This dataset is a DNA barcode reference library (fragment of Cytochrome Oxydase I gene) for 2,190 specimens representing at least 540 species of shore fishes collected over 10 years at 154 sites across the four volcanic archipelagos of French Polynesia; the Austral, Gambier, Marquesas and Society Islands, a 5,000,000 km(2) area. At present, 65% of the known shore fish species of these archipelagoes possess a DNA barcode associated with preserved, photographed, tissue sampled and cataloged specimens, and extensive collection locality data. This dataset represents one...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00508/61942/66026.pdf
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An updated assessment of Symbiodinium spp. that associate with common scleractinian corals from Moorea (French Polynesia) reveals high diversity among background symbionts and a novel finding of clade B ArchiMer
Rouze, Heloise; Lecellier, Gael J.; Saulnier, Denis; Planes, Serge; Gueguen, Yannick; Wirshing, Herman H.; Berteaux-lecellier, Veronique.
The adaptative bleaching hypothesis (ABH) states that, depending on the symbiotic flexibility of coral hosts (i.e., the ability of corals to “switch” or “shuffle” their algal symbionts), coral bleaching can lead to a change in the composition of their associated Symbiodinium community and, thus, contribute to the coral’s overall survival. In order to determine the flexibility of corals, molecular tools are required to provide accurate species delineations and to detect low levels of coral-associated Symbiodinium. Here, we used highly sensitive quantitative (real-time) PCR (qPCR) technology to analyse five common coral species from Moorea (French Polynesia), previously screened using only traditional molecular methods, to assess the presence of...
Tipo: Text Palavras-chave: Corals; French polynesia; Clade B; Symbiodinium; QPCR; Flexibility; Generalist; Faithful clade.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00365/47652/47683.pdf
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Coastal Ocean and Nearshore Observation: A French Case Study ArchiMer
Cocquempot, Lucie; Delacourt, Christophe; Paillet, Jerome; Riou, Philippe; Aucan, Jérôme; Castelle, Bruno; Charria, Guillaume; Claudet, Joachim; Conan, Pascal; Coppola, Laurent; Hocdé, Régis; Planes, Serge; Raimbault, Patrick; Savoye, Nicolas; Testut, Laurent; Vuillemin, Renaud.
To understand and predict the physical, chemical, and biological processes at play in coastal and nearshore marine areas requires an integrated, interdisciplinary approach. The case study of the French structuration of coastal ocean and nearshore observing systems provides an original overview on a federative research infrastructure named ILICO. It is a notable example of national structuration and pan-institution efforts to investigate the forefront of knowledge on the processes at work within the critical coastal zone. ILICO comprises, in a pluridisciplinary approach, eight distributed network-systems of observation and data analysis that are accredited and financially supported by French research institutions and the French Ministry for Higher...
Tipo: Text Palavras-chave: Observation infrastructure; National structuration; Interdisciplinary; Coastal ocean; Coastline.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00503/61489/65292.pdf
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Colour plasticity in the shells and pearls of animal graft model Pinctada margaritifera assessed by HSV colour quantification ArchiMer
Stenger, Pierre-louis; Vidal-dupiol, Jeremie; Reisser, Celine; Planes, Serge; Ky, Chin-long.
The bivalve Pinctada margaritifera has the capacity to produce the most varied and colourful pearls in the world. Colour expression in the inner shell is under combined genetic and environmental control and is correlated with the colour of pearls produced when the same individual is used as a graft donor. One major limitation when studying colour phenotypes is grader subjectivity, which leads to inconsistent colour qualification and quantification. Through the use of HSV (Hue Saturation Value) colour space, we created an R package named ‘ImaginR’ to characterise inner shell colour variations in P. margaritifera. Using a machine-learning protocol with a training dataset, ImaginR was able to reassign individual oysters and pearls to predefined human-based...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00497/60900/64239.pdf
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Crossing phenotype heritability and candidate gene expression in grafted black-lipped pearl oyster Pinctada margaritifera, an animal chimera ArchiMer
Blay, Carole; Planes, Serge; Ky, Chin-long.
Grafting mantle tissue of a donor pearl oyster into the gonad of a recipient oyster results in the formation of a chimera, the pearl sac. The phenotypic variations of this chimera are hypothesized to be the result of interactions between the donor and recipient genomes. In this study, the heritability of phenotypic variation and its association with gene expression were investigated for the first time during P. margaritifera pearl production. Genetic variance was evaluated at different levels, 1) before the graft operation (expression in graft tissue), 2) after grafting (pearl sac tissue expression in chimera) and 3) on the product of the graft (pearl phenotype traits) based on controlled bi-parental crosses and the F1 generation. Donor related genetic...
Tipo: Text Palavras-chave: Gene expression; Heritability; Pearl oyster; Phenotype; Pinctada margaritifera.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00433/54505/55876.pdf
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Cultured Pearl Surface Quality Profiling by the Shell Matrix Protein Gene Expression in the Biomineralised Pearl Sac Tissue of Pinctada margaritifera ArchiMer
Blay, Carole; Planes, Serge; Ky, Chin-long.
Nucleated pearls are produced by molluscs of the Pinctada genus through the biomineralisation activity of the pearl sac tissue within the recipient oyster. The pearl sac originates from graft tissue taken from the donor oyster mantle and its functioning is crucial in determining key factors that impact pearl quality surface characteristics. The specific role of related gene regulation during gem biogenesis was unknown, so we analysed the expression profiles of eight genes encoding nacreous (PIF, MSI60, PERL1) or prismatic (SHEM5, PRISM, ASP, SHEM9) shell matrix proteins or both (CALC1) in the pearl sac (N = 211) of Pinctada margaritifera during pearl biogenesis. The pearls and pearl sacs analysed were from a uniform experimental graft with sequential...
Tipo: Text Palavras-chave: Biomineralisation; Relative gene expression; Pearl sac; Biomarkers; Pearl quality; Pinctada margaritifera.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00435/54622/56022.pdf
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Distributions of Indo-Pacific lionfishes Pterois spp. in their native ranges: implications for the Atlantic invasion ArchiMer
Kulbicki, Michel; Beets, James; Chabanet, Pascale; Cure, Katherine; Darling, Emily; Floeter, Sergio R.; Galzin, Rene; Green, Alison; Harmelin-vivien, Mireille; Hixon, Mark; Letourneur, Yves; De Loma, Thierry Lison; Mcclanahan, Tim; Mcilwain, Jennifer; Moutham, Gerard; Myers, Robert; O'Leary, Jennifer K.; Planes, Serge; Vigliola, Laurent; Wantiez, Laurent.
Lionfish (Pterois volitans and P. miles) have become a major concern in the western Attantie and Caribbean since their introduction in the 1980s. Invasive lionfish can reach very high population densities on coral reefs in their invaded range, yet there are few data from their native range in the Indo-Pacific for comparison. We compiled data on the geographical distribution and density of Indo-Pacific lionfishes in their native ranges from published and unpublished underwater visual censuses and field collections. We found that lionfish in their native Indo-Pacific range are unevenly distributed, with higher densities in the Indian Ocean than in the Pacific. Lionfish densities increase significantly with increasing latitude, and are significantly higher in...
Tipo: Text Palavras-chave: Pterois; Indo-Pacific; Ecology; Visual census; Larvae; Invasive species.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00207/31781/30193.pdf
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Donor and recipient contribution to phenotypic traits and the expression of biomineralisation genes in the pearl oyster model Pinctada margaritifera ArchiMer
Blay, Carole; Planes, Serge; Ky, Chin-long.
Grafting associates two distinct genotypes, each of which maintains its own genetic identity throughout the life of the grafted organism. Grafting technology is well documented in the plant kingdom, but much less so in animals. The pearl oyster, Pinctada margaritifera, produces valuable pearls as a result of the biomineralisation process of a mantle graft from a donor inserted together with a nucleus into the gonad of a recipient oyster. To explore the respective roles of donor and recipient in pearl formation, a uniform experimental graft was designed using donor and recipient oysters monitored for their growth traits. At the same time, phenotypic parameters corresponding to pearl size and quality traits were recorded. Phenotypic interaction analysis...
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Ano: 2017 URL: https://archimer.ifremer.fr/doc/00387/49809/50382.pdf
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Environmentally Driven Color Variation in the Pearl Oyster Pinctada margaritifera var. cumingii (Linnaeus, 1758) Is Associated With Differential Methylation of CpGs in Pigment- and Biomineralization-Related Genes ArchiMer
Stenger, Pierre-louis; Ky, Chin-long; Reisser, Celine; Cosseau, Céline; Grunau, Christoph; Mege, Mickael; Planes, Serge; Vidal-dupiol, Jeremie.
Today, it is common knowledge that environmental factors can change the color of many animals. Studies have shown that the molecular mechanisms underlying such modifications could involve epigenetic factors. Since 2013, the pearl oyster Pinctada margaritifera var. cumingii has become a biological model for questions on color expression and variation in Mollusca. A previous study reported color plasticity in response to water depth variation, specifically a general darkening of the nacre color at greater depth. However, the molecular mechanisms behind this plasticity are still unknown. In this paper, we investigate the possible implication of epigenetic factors controlling shell color variation through a depth variation experiment associated with a DNA...
Tipo: Text Palavras-chave: Pearl oyster; Environmental pressure; Depth; Color change; Pigmentation; DNA methylation; Methylome characterization.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00685/79667/82436.pdf
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Expanding Tara Oceans Protocols for Underway, Ecosystemic Sampling of the Ocean-Atmosphere Interface During Tara Pacific Expedition (2016-2018) ArchiMer
Gorsky, Gabriel; Bourdin, Guillaume; Lombard, Fabien; Pedrotti, Maria Luiza; Audrain, Samuel; Bin, Nicolas; Boss, Emmanuel; Bowler, Chris; Cassar, Nicolas; Caudan, Loic; Chabot, Genevieve; Cohen, Natalie R.; Cron, Daniel; De Vargas, Colomban; Dolan, John R.; Douville, Eric; Elineau, Amanda; Flores, J. Michel; Ghiglione, Jean Francois; Haentjens, Nils; Hertau, Martin; John, Seth G.; Kelly, Rachel L.; Koren, Ilan; Lin, Yajuan; Marie, Dominique; Moulin, Clementine; Moucherie, Yohann; Pesant, Stephane; Picheral, Marc; Poulain, Julie; Pujo-pay, Mireille; Reverdin, Gilles; Romac, Sarah; Sullivan, Mathew B.; Trainic, Miri; Tressol, Marc; Trouble, Romain; Vardi, Assaf; Voolstra, Christian R.; Wincker, Patrick; Agostini, Sylvain; Banaigs, Bernard; Boissin, Emilie; Forcioli, Didier; Furla, Paola; Galand, Pierre E.; Gilson, Eric; Reynaud, Stephanie; Sunagawa, Shinichi; Thomas, Olivier P.; Thurber, Rebecca Lisette Vega; Zoccola, Didier; Planes, Serge; Allemand, Denis; Karsenti, Eric; Planes, S.; Banaig, B.; Boissin, E.; Iwankow, G.; Allemand, D.; Zoccola, D.; Reynaud, S.; Beraud, E.; Djerbi, N.; Forcioli, D.; Furla, P.; Gilson, E.; Mcmind, R.; Ottaviani, A.; Rottinger, E.; Rouan, A.; Zamoum, T.; Flume, B. C. C.; Pogoreutz, C.; Voolstra, C. R.; Rothig, T.; Ziegler, M.; Paoli, L.; Ruscheweyh, H-j; Salazar, G.; Sunagawa, S.; Flores, J. M.; Koren, I; Trainic, M.; Lang-yona, N.; Vardi, A.; Conan, P.; Ghiglione, J-f; Pujo-pay, M.; Galand, P. E.; Hochart, C.; Audrain, S.; Bourgois, E.; Hertau, M.; Lancelot, J.; Monmarche, D.; Moulin, C.; Moucherie, Y.; Trouble, R.; Boss, E.; Bourdin, G.; Haentjens, N.; Karp-boss, L.; Douville, Eric; Agostini, S.; Mitsuhashi, G.; Kitano, Y.; Da Silva, O.; Dolan, J. R.; Gorsky, G.; Lemee, R.; Lombard, F.; Pedrotti, M-l; Cronin, D.; Sullivan, M.; Armstrong, E.; Aury, J-m; Barbe, V; Belser, C.; Carradec, Q.; Labadie, K.; Le-hoang, J.; Noel, B.; Poulain, J.; Wincker, P.; Klinges, G.; Vega-thunder, R.; Bonnival, E.; De Vargas, C.; Henry, N.; Marie, D.; Romac, S.; Pesant, S.; Miguel-gorda, M.; Thomas, O. P.; Bowler, C.; Friedrich, R.; Cassar, N.; Lin, Y.; John, S. G.; Kelly, R. L.; Cohen, N. R.; Reverdin, G.; Filee, J..
Interactions between the ocean and the atmosphere occur at the air-sea interface through the transfer of momentum, heat, gases and particulate matter, and through the impact of the upper-ocean biology on the composition and radiative properties of this boundary layer. The Tara Pacific expedition, launched in May 2016 aboard the schooner Tara, was a 29-month exploration with the dual goals to study the ecology of reef ecosystems along ecological gradients in the Pacific Ocean and to assess inter-island and open ocean surface plankton and neuston community structures. In addition, key atmospheric properties were measured to study links between the two boundary layer properties. A major challenge for the open ocean sampling was the lack of ship-time available...
Tipo: Text Palavras-chave: Neuston/plankton genomics/taxonomy/imaging; Aerosols; NCP; IOP; Trace metals; Microplastic.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00599/71083/69390.pdf
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Identification of genes associated with shell color in the black-lipped pearl oyster, Pinctada margaritifera ArchiMer
Lemer, Sarah; Saulnier, Denis; Gueguen, Yannick; Planes, Serge.
Background: Color polymorphism in the nacre of pteriomorphian bivalves is of great interest for the pearl culture industry. The nacreous layer of the Polynesian black-lipped pearl oyster Pinctada margaritifera exhibits a large array of color variation among individuals including reflections of blue, green, yellow and pink in all possible gradients. Although the heritability of nacre color variation patterns has been demonstrated by experimental crossing, little is known about the genes involved in these patterns. In this study, we identify a set of genes differentially expressed among extreme color phenotypes of P. margaritifera using a suppressive and subtractive hybridization (SSH) method comparing black phenotypes with full and half albino individuals....
Tipo: Text Palavras-chave: Differential expression; Biomineralization; Nacre; Pearl; Pigmentation; Albino.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00275/38627/37167.pdf
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Interspecific Hybridization in Pilot Whales and Asymmetric Genetic Introgression in Northern Globicephala melas under the Scenario of Global Warming ArchiMer
Miralles, Laura; Oremus, Marc; Silva, Monica A.; Planes, Serge; Garcia-vazquez, Eva.
Pilot whales are two cetacean species (Globicephala melas and G. macrorhynchus) whose distributions are correlated with water temperature and partially overlap in some areas like the North Atlantic Ocean. In the context of global warming, distribution range shifts are expected to occur in species affected by temperature. Consequently, a northward displacement of the tropical pilot whale G. macrorynchus is expected, eventually leading to increased secondary contact areas and opportunities for interspecific hybridization. Here, we describe genetic evidences of recurrent hybridization between pilot whales in northeast Atlantic Ocean. Based on mitochondrial DNA sequences and microsatellite loci, asymmetric introgression of G. macrorhynchus genes into G. melas...
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Ano: 2016 URL: https://archimer.ifremer.fr/doc/00496/60720/65278.pdf
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Liste des poissons côtiers de Polynésie française ArchiMer
Siu, Gilles; Bacchet, Philippe; Bernardi, Giacomo; Brooks, Andrew J.; Carlot, Jeremy; Causse, Romain; Claudet, Joachim; Clua, Eric; Delrieu-trottin, Erwan; Espiau, Benoit; Harmelin-vivien, Mireille; Keith, Philippe; Lecchini, David; Madi-moussa, Rakamaly; Parravicini, Valeriano; Planes, Serge; Ponsonnet, Cedric; Randall, John E.; Sasal, Pierre; Taquet, Marc; Williams, Jeffrey T.; Galzin, Rene.
On the occasion of the 10th Indo-Pacific Fish Conference (http://ipfc10.criobe.pf/) to be held in Tahiti in October 2017, it seemed timely to update Randall's 1985 list of the fishes known from French Polynesia. Many studies focusing on fishes in this area have been published since 1985, but Randall's list remains the authoritative source. Herein we present an expanded species list of 1,301 fishes now known to occur in French Polynesia and we review the expeditions and information sources responsible for the over 60% increase in the number of known species since the publication of Randall's checklist in 1985. Our list of the fishes known from French Polynesia includes only those species with a reliably verifiable presence in these waters. In cases where...
Tipo: Text Palavras-chave: Coral reef fishes; Deep and Pelagic fishes; Freshwater fishes; French Polynesia; Endemic fishes; Inventory.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00666/77826/80005.pdf
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Microbiome of the Black-Lipped Pearl Oyster Pinctada margaritifera, a Multi-Tissue Description With Functional Profiling ArchiMer
Dubé, Caroline; Ky, Chin-long; Planes, Serge.
Elucidating the role of prokaryotic symbionts in mediating host physiology has emerged as an important area of research. Since oysters are the world’s most heavily cultivated bivalve molluscs, numerous studies have applied molecular techniques to understand the taxonomic and functional diversity of their associated bacteria. Here, we expand on this research by assessing the composition and putative functional profiles of prokaryotic communities from different organs/compartments of the black-lipped pearl oyster Pinctada margaritifera, a commercially important shellfish valued for cultured pearl production in the Pacific region. Seven tissues, in addition to mucous secretions, were targeted from P. margaritifera individuals: the gill, gonad, byssus gland,...
Tipo: Text Palavras-chave: Pearl oyster; Microbiome; Tissue-specific bacterial communities; 16S rRNA gene sequencing; Functional profiling prediction.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00505/61670/65589.pdf
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Molecular Pathways and Pigments Underlying the Colors of the Pearl Oyster Pinctada margaritifera var. cumingii (Linnaeus 1758) ArchiMer
Stenger, Pierre-louis; Ky, Chin-long; Reisser, Celine; Duboisset, Julien; Dicko, Hamadou; Durand, Patrick; Quintric, Laure; Planes, Serge; Vidal-dupiol, Jeremie.
The shell color of the Mollusca has attracted naturalists and collectors for hundreds of years, while the molecular pathways regulating pigment production and the pigments themselves remain poorly described. In this study, our aim was to identify the main pigments and their molecular pathways in the pearl oyster Pinctada margaritifera—the species displaying the broadest range of colors. Three inner shell colors were investigated—red, yellow, and green. To maximize phenotypic homogeneity, a controlled population approach combined with common garden conditioning was used. Comparative analysis of transcriptomes (RNA-seq) of P. margaritifera with different shell colors revealed the central role of the heme pathway, which is involved in the production of red...
Tipo: Text Palavras-chave: Pinctada margaritifera; Color; Pigment; Transcriptomics; Raman spectroscopy.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00685/79671/82446.pdf
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Mono- and polychromatic inner shell phenotype diversity in Pinctada margaritifera donor pearl oysters and its relation with cultured pearl colour ArchiMer
Ky, Chin-long; Lo, Cedrik; Planes, Serge.
The pearl oyster Pinctada margaritifera has the specific ability to produce pearls with the widest range of colours among all pearl oyster species. This pearl colour diversity originates from the mantle biomineralising tissue (graft) of the donor oyster, which is originally responsible for the variety of colours of the inner shell surface. This study aimed to: 1) assess the geographic distribution and establish a first stocklist of the colourful oyster phenotypes used as donors in French Polynesia, and 2) investigate the phenotypic relation between inner shell colouration and the corresponding colour of harvested pearls. With the support of a pearl farmers' network, we investigated the different donor phenotype frequencies among five collection sites (Ahe,...
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Ano: 2017 URL: http://archimer.ifremer.fr/doc/00354/46474/46249.pdf
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Optimal age of the donor graft tissue in relation to cultured pearl phenotypes in the mollusc, Pinctada margaritifera ArchiMer
Blay, Carole; Planes, Serge; Ky, Chin-long.
Ageing is defined as the progressive decline in tissue and organ functions over time. This study aims to evaluate the ageing effect on cultured pearl quality phenotypes (including size and quality traits) in the graft-recipient animal model: Pinctada margaritifera. For this, eight uniform grafting experiments were designed using two hatchery-produced pearl oyster families as donors, which were followed through time, between 7 and 30 months in age. For each age category, 20 donors were studied for each culture site giving a total of 2400 grafted oysters. Several phenotypic measurements were made: 1) donor family growth performance from shell size records, 2) pearl size and corresponding quality traits, and 3) expression of some genes related to...
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Ano: 2018 URL: http://archimer.ifremer.fr/doc/00444/55593/57220.pdf
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Population Connectivity and Genetic Assessment of Exploited and Natural Populations of Pearl Oysters within a French Polynesian Atoll Lagoon ArchiMer
Reisser, Celine; Gendre, Romain Le; Chupeau, Cassandre; Lo-yat, Alain; Planes, Serge; Andréfouët, Serge.
In French Polynesia, the production and exportation of black pearls through the aquaculture of the black-lip pearl oyster Pinctada margaritifera provide the second largest economic income for the country after tourism. This industry entirely relies on the collection of natural spats from few highly recruiting lagoons. In recent years, pearl oyster producers have experienced variable success rates in spat collection, with significant spatial and temporal variability in spat supply, driving uncertainty in the future of pearl production. This study combines, for the first time in a farmed lagoon, genetic (SNPs), demographic (sex ratio, age), and biophysical data (larval dispersal modelling) to shed new light on population dynamics, connectivity, and spat...
Tipo: Text Palavras-chave: Pinctada margaritifera; Connectivity; Population genomics; Pearl farming; Larval dispersal modelling; MARS3D..
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00623/73503/72810.pdf
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Relationship of the orange tissue morphotype with shell and pearl colouration in the mollusc Pinctada margaritifera ArchiMer
Ky, Chin-long; Blay, Carole; Broustal, Floriane; Sham Koua, Manaarii; Planes, Serge.
Molluscs display a vast range of shell colours both between and within species. However, only a few species show colour variation in their soft tissues. In French Polynesia, the pearl oyster Pinctada margaritifera has three tissue morphotypes: the black wild-type and two rare mutations: white albino and orange mantle. Phenotypic transmission is known to occur from these phenotypes when they are used as graft donors for pearl production, leading to multicoloured and white pearls from black and albino mantle grafts, respectively. The present study furthers this knowledge by examining the phenotypic association between the orange mantle tissue morphotype and hard tissues: shells and cultured pearls. Based on a large experimental graft, shell colour...
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Ano: 2019 URL: https://archimer.ifremer.fr/doc/00486/59760/62878.pdf
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Réseau de surveillance des polluants anthropiques dans les lagons de Polynésie française. Rapport final - Septembre 2014. Contrat de projet Etat-Pays ArchiMer
Bernagout, Solene; Bouisset, Patrick; Leclerc, Gael; Rua, Jean; Nohl, Marine; Garen, Pierre; Levy, Peva; Tetaura, Nono-lewis; Poroi, Destremeau; Sham Koua, Manaarii; Liao, Vetea; Bosserelle, Pauline; Planes, Serge; Espiau, Benoit.
La mise en place d’un réseau d’observation de la qualité des eaux lagonaires de Polynésie française, financé par le contrat de projet Etat – Pays, a été initiée mi 2012 pour une durée de deux ans. Durant un à trois semestres la contamination in situ a été suivie sur 6 sites : Vairao et la baie de Phaéton à Tahiti, Moorea (Vaiare), Huahine (Faie), Maupiti et Rangiroa. Le mollusque bioindicateur utilisé est l’huître perlière Pinctada margaritifera. Après transplantation et 4 mois d’immersion sur site, la mesure dans les chairs de la radioactivité gamma n’a pas permis de détecter de radionucléides artificiels, cependant du césium 137 a été mesuré dans les sédiments sur 2 sites. Le plutonium (émetteur alpha) est présent en faibles quantités dans les chairs....
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00249/35975/34499.pdf
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