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| Registros recuperados: 13 | |
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| Branco,Claudia C.; Pacheco,Paula R.; Cabrol,Ester; Cabral,Rita; Vicente,Astrid M.; Mota-Vieira,Luisa. |
| Studies on linkage disequilibrium (LD) across the genome and populations have been used in recent years with the main objective of improving gene mapping of complex traits. Here, we characterize the patterns of genetic diversity of HLA loci and evaluate LD (D') extent in three genomic regions: Xq13.3, NRY and HLA. In addition, we examine the distribution of DXS1225-DXS8082 haplotype diversity in Azoreans and mainland Portuguese. Allele distribution has demonstrated that the São Miguel population is genetically very diverse; haplotype analysis revealed 100% discriminatory power for X- and Y-markers and 94.3% for HLA markers. Standardized multiallelic D' in these three genomic regions shows values lower than 0.33, thereby suggesting there is no extensive LD... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Linkage disequilibrium; X-chromosome; Y-chromosome; HLA; São Miguel; Azores. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200003 |
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| Cosson, R; Thiebaut, E; Company, R; Castrec Rouelle, M; Colaco, A; Martins, I; Sarradin, Pierre-marie; Bebianno, M. |
| The variability of the bioaccumulation of metals (Ag, Cd, Cu, Fe, Mn and Zn) was extensively studied in the mussel Bathymodiolus azoricus from five hydrothermal vent sites inside three main vent fields of increasing depth along the Mid-Atlantic Ridge: Menez Gwen, Lucky Strike and Rainbow. Metal bioaccumulation varied greatly between vent fields and even between sites inside a vent field with B. azoricus showing a great capacity to accumulate metals. The bioaccumulation of these metals also varied significantly among tissues. The main target was the gills where metals were mainly associated with soluble compounds whereas in the digestive gland they were mainly associated with insoluble compounds. Storage of metals under insoluble forms in B. azoricus seems... |
| Tipo: Text |
Palavras-chave: Bathymodiolus; Mytilids; Hydrothermal vents; Azores; Metals; Bioaccumulation. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3954.pdf |
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| Zeppilli, Daniela; Bongiorni, Lucia; Cattaneo, Antonio; Danovaro, Roberto; Santos, R. |
| Seamounts are currently considered hotspots of biodiversity and biomass for macro- and megabenthic taxa, but knowledge of meiofauna is still limited. Studies have revealed the existence of highly diverse meiofauna assemblages; however most data are mainly qualitative or focused only on specific groups, thus preventing comparisons among seamounts and with other deep-sea areas. This study, conducted on Condor Seamount (Azores, North-East Atlantic Ocean), describes variation in abundance, biomass, community structure and biodiversity of benthic meiofauna from five sites located on the Condor Seamount: and one site away from the seamount. While the summit of the seamount hosted the highest alpha biodiversity, the flanks and the bases showed a rich meiofauna... |
| Tipo: Text |
Palavras-chave: Condor Seamount; Meiofauna; Biodiversity; Deep-sea sediments; Azores. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00152/26324/24398.pdf |
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| Moreira, M. A.; Geoffroy, Laurent; Pozzi, J. P.. |
| The localization of magma melting areas at the lithosphere bottom in extensional volcanic domains is poorly understood. Large polygenetic volcanoes of long duration and their associated magma chambers suggest that melting at depth may be focused at specific points within the mantle. To validate the hypothesis that the magma feeding a mafic crust, comes from permanent localized crustal reservoirs, it is necessary to map the fossilized magma flow within the crustal planar intrusions. Using the AMS, we obtain magmatic flow vectors from 34 alkaline basaltic dykes from SAo Jorge, SAo Miguel and Santa Maria islands in the Azores Archipelago, a hot-spot related triple junction. The dykes contain titanomagnetite showing a wide spectrum of solid solution ranging... |
| Tipo: Text |
Palavras-chave: AMS; Azores; Dykes; Lithosphere; Magma flow; Volcanism. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00639/75144/75499.pdf |
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| Xavier, J.R.; Soest, R.W.M. van; Breeuwer, J.A.J.; Martins, A.M.F.; Menken, S.B.J.. |
| In this study we assessed the sequence variation in the I3-M11 partition of the mtDNA cytochrome c oxidase subunit I gene (COI) in ten populations of the Atlanto-Mediterranean demosponge Phorbas fictitius (Porifera: Poecilosclerida) at two spatial scales: a regional scale comparing mainland (Iberian) and insular (Macaronesian) populations, and a local (Archipelagic) scale focusing on different island populations of the Azores archipelago. A multiple approach combining diversity measures, FST estimates, phylogenetic inference and nested clade phylogeographic analysis was used to assess the genetic structure and elucidate the evolutionary history of this species. Genetic differentiation, based of FST estimates, was found among most populations at both scales... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Azores; Genetic diversity; Iberia; Macaronesia; Mitochondrial DNA; Porifera; 42.72. |
| Ano: 2010 |
URL: http://www.repository.naturalis.nl/record/355610 |
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| Fransen, C.H.J.M.; Wirtz, P.. |
| The decapods Eualus lebourae, Processa modica carolii, Palaemon xiphias, Philocheras bispinosus, and Inachus phalangium are recorded from the coasts of Madeira for the first time. The decapods Hippolyte garciarasoi, Hippolyte varians, Eualus lebourae, Processa parva, Processa modica carolii, Processa robusta, Palaemonella atlantica, Periclimenes wirtzi, Philocheras bispinosus, and Philocheras fasciatus, are recorded from the coasts of the Canary Islands for the first time. Eualus occultus, Processa parva and Processa modica carolii are recorded from the Cape Verde Islands for the first time. Processa parva is also recorded for the Azores for the first time. For Eualus occultus, Hippolyte garciarasoi, Processa modica carolii, Periclimenes wirtzi and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Crustacea; Decapoda; Madeira; Canary Islands; Azores; Cape Verde Islands; New records; 42.74. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/318997 |
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| Hartog, J.C. den. |
| Three species of the actinian genus Telmatactis Gravier, 1916, viz. T. forskalii (Ehrenberg, 1834), T. solidago (Duchassaing & Michelotti, 1864) and T. cricoides (Duchassaing, 1850), occurring in Greece and the eastern Mediterranean, are described and discussed. Detailed data on the cnidom of the three species are provided. The characteristic penicilli of members of the genus Telmatactis are discussed. These penicilli were classified by Schmidt (1969, 1972) as p-rhabdoids (= penicilli) B1b, but it is here claimed that they actually belong in Schmidt's B2 group (provisionally as penicilli B2c). They correspond in general form and as to their distribution in the actinian polyp with the more usual penicilli B2a sensu Schmidt (1969), but unlike these, they... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Actiniaria; Isophelliidae; Telmatactis; Nematocysts; Penicilli B; Greece; Eastern Mediterranean; Azores; New records; Inter-glacial relicts; 42.74. |
| Ano: 1995 |
URL: http://www.repository.naturalis.nl/record/318875 |
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| Registros recuperados: 13 | |
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