Search results for "Pinctada"
showing 5 items of 15 documents
Data from: Phylogenomics of Lophotrochozoa with consideration of systematic error
2016
Phylogenomic studies have improved understanding of deep metazoan phylogeny and show promise for resolving incongruences among analyses based on limited numbers of loci. One region of the animal tree that has been especially difficult to resolve, even with phylogenomic approaches, is relationships within Lophotrochozoa (the animal clade that includes molluscs, annelids, and flatworms among others). Lack of resolution in phylogenomic analyses could be due to insufficient phylogenetic signal, limitations in taxon and/or gene sampling, or systematic error. Here, we investigated why lophotrochozoan phylogeny has been such a difficult question to answer by identifying and reducing sources of sys…
Primeros hallazgos del molusco marino invasor Pinctada radiata (Leach, 1840) (Bivalvia: F. Margaritidae) en la costa valenciana (España)
2021
Se dan a conocer por primera vez diversos hallazgos del molusco bivalvo marino lessepsiano Pinctada radiata en la costa valenciana, concretamente en la costa del Golfo de Valencia (España). Esta especie puede causar efectos negativos sobre el ecosistema, afectando a su biodiversidad autóctona. Se proporcionan datos conquiológicos de la concha y el mapa de distribución geográfica actual de esta especie en la costa valenciana y en el mediterráneo occidental. -- First findings of invasive marine mollusc Pinctada radiata (Leach, 1840) (Bivalvia: F. Margaritidae) on the Valencian coast (Spain). Several findings of the marine Lessepsian bivalve mollusc Pinctada radiata are disclosed for the first…
Pmarg-pearlin is a matrix protein involved in nacre framework formation in the pearl oyster Pinctada margaritifera.
2011
11 pages; International audience; The shell of pearl oysters is organized in multiple layers of CaCO(3) crystallites packed together in an organic matrix. Relationships between the components of the organic matrix and mechanisms of nacre formation currently constitute the main focus of research into biomineralization. In this study, we characterized the pearlin protein from the oyster Pinctada margaritifera (Pmarg); this shares structural features with other members of a matrix protein family, N14/N16/pearlin. Pmarg pearlin exhibits calcium- and chitin-binding properties. Pmarg pearlin transcripts are distinctively localized in the mineralizing tissue responsible for nacre formation. More s…
Characterization of molecular processes involved in the pearl formation in Pinctada margaritifera for a sustainable development of pearl farming indu…
2013
Tahiti’s pearl farming industry plays a major socio-economic role in French Polynesia. In an increasingly competitive market where the production of high quality pearls becomes essential, research can help secure and ensure sustainable production. In that context, Ifremer, in close collaboration with the “direction des resources marines” (French Polynesian government agency) has developed research projects on the “sustainable development of pearl farming”. This program is organized along 3 axes: (1) understanding the animal physiology and initiating a genetically selective breeding program of donor oysters; (2) understanding pearl oyster larvae dispersal and recruitment; (3) understanding t…
Characterization of molecular processes involved in the pearl formation in Pinctada margaritifera for the sustainable development of pearl farming in…
2011
11 pages; International audience