Browsing by Author "Vierna Fernández, Joaquín"
Now showing items 1-9 of 9
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Analysis of ITS1 and ITS2 sequences in "Ensis" razor shells: suitability as molecular markers at the population and species levels, and evolution of these ribosomal DNA spacers
Vierna Fernández, Joaquín; Martínez-Lage, Andrés; González-Tizón, Ana M. (Canadian Science Publishing, 2010-01)[Abstract] Internal transcribed spacer 1 and 2 (ITS1 and ITS2) sequences were analysed in Ensis razor shells (Mollusca: Bivalvia: Pharidae). We aimed to (1) test ITS1 and ITS2 as molecular markers at the population level ... -
Cytogenetic characterisation of the razor shells "Ensis directus" (Conrad, 1843) and "E. minor" (Chenu, 1843) (Mollusca: Bivalvia)
González-Tizón, Ana M.; Rojo Oróns, Verónica; Vierna Fernández, Joaquín; Jensen, K. Thomas; Egea, Emilie; Martínez-Lage, Andrés (Springer Nature, 2012-04-26)[Abstract] The European razor shell Ensis minor (Chenu 1843) and the American E. directus (Conrad 1843) have a diploid chromosome number of 38 and remarkable differences in their karyotypes: E. minor has four metacentric, ... -
Genetic analysis in various razor shell species of family pharidae, with focus on atlantic "Ensis"
Vierna Fernández, Joaquín (2014)[Resumen] En esta tesis se ha realizado un estudio genético de un grupo de bivalvos marinos de la familia Pharidae Adams y Adams, 1858, y principalmente de las navajas del género Ensis Schumacher, 1817. El estudio se ... -
Long-term evolution of 5S ribosomal DNA seems to be driven by birth-and-death processes and selection in "Ensis" razor shells (Mollusca: Bivalvia)
Vierna Fernández, Joaquín; González-Tizón, Ana M.; Martínez-Lage, Andrés (Springer Nature, 2009-10)[Abstract] A study of nucleotide sequence variation of 5S ribosomal DNA from six Ensis species revealed that several 5S ribosomal DNA variants, based on differences in their nontranscribed spacers (NTS), occur in Ensis ... -
Population genetic analysis of "Ensis directus" unveils high genetic variation in the introduced range and reveals a new species from the NW Atlantic
Vierna Fernández, Joaquín; Jensen, K. Thomas; González-Tizón, Ana M.; Martínez-Lage, Andrés (Springer Nature, 2012-07-31)[Abstract] We report current genetic variation of populations of the razor shell Ensis directus (Conrad 1843) (Mollusca: Bivalvia: Pharidae) in native (North American) and introduced (European) ranges using nuclear and ... -
Species delimitation and DNA barcoding of Atlantic Ensis (Bivalvia, Pharidae)
Vierna Fernández, Joaquín; Cuperus, Joël; Martínez-Lage, Andrés; Jansen, Jeroen M.; Perina Cedrón, Alejandra; Van Pelt, Hilde; González-Tizón, Ana M. (Wiley, 2013-09-03)[Abstract] Ensis Schumacher, 1817 razor shells occur at both sides of the Atlantic and along the Pacific coasts of tropical west America, Peru, and Chile. Many of them are marketed in various regions. However, the absence ... -
Systematic analysis and evolution of 5S ribosomal DNA in metazoans
Vierna Fernández, Joaquín; Wehner, Stefanie; Höner zu Siederdissen, Christian; Martínez-Lage, Andrés; Marz, Manja (Springer Nature, 2013-07-10)[Abstract] Several studies on 5S ribosomal DNA (5S rDNA) have been focused on a subset of the following features in mostly one organism: number of copies, pseudogenes, secondary structure, promoter and terminator ... -
The 5S rDNA gene family in mollusks: characterization of transcriptional regulatory regions, prediction of secondary structures, and long-term evolution, with special attention to Mytilidae mussels
Vizoso, Miguel; Vierna Fernández, Joaquín; González-Tizón, Ana M.; Martínez-Lage, Andrés (Oxford University Press, 2011-07-01)[Abstract] Several reports on the characterization of 5S ribosomal DNA (5S rDNA) in various animal groups have been published to date, but there is a lack of studies analyzing this gene family in a much broader context. ... -
The linked units of 5S rDNA and U1 snDNA of razor shells (Mollusca: Bivalvia: Pharidae)
Vierna Fernández, Joaquín; Jensen, K. Thomas; Martínez-Lage, Andrés; González-Tizón, Ana M. (Nature, 2011-08)[Abstract] The linkage between 5S ribosomal DNA and other multigene families has been detected in many eukaryote lineages, but whether it provides any selective advantage remains unclear. In this work, we report the ...
