Search results for "Americas"
showing 5 items of 15 documents
Nuclear rDNA pseudogenes in Chagas disease vectors: Evolutionary implications of a new 5.8S+ITS-2 paralogous sequence marker in triatomines of North,…
2013
A pseudogene, paralogous to rDNA 5.8S and ITS-2, is described in Meccus dimidiata dimidiata, M. d. capitata, M. d. maculippenis, M. d. hegneri, M. sp. aff. dimidiata, M. p. phyllosoma, M. p. longipennis, M. p. pallidipennis, M. p. picturata, M. p. mazzottii, Triatoma mexicana, Triatoma nitida and Triatoma sanguisuga, covering North America, Central America and northern South America. Such a nuclear rDNA pseudogene is very rare. In the 5.8S gene, criteria for pseudogene identification included length variability, lower GC content, mutations regarding the functional uniform sequence, and relatively high base substitutions in evolutionary conserved sites. At ITS-2 level, criteria were the shor…
Ten millennia of hepatitis B virus evolution
2021
Hepatitis B virus (HBV) has been infecting humans for millennia and remains a global health problem, but its past diversity and dispersal routes are largely unknown. We generated HBV genomic data from 137 Eurasians and Native Americans dated between ~10,500 and ~400 years ago. We date the most recent common ancestor of all HBV lineages to between ~20,000 and 12,000 years ago, with the virus present in European and South American hunter-gatherers during the early Holocene. After the European Neolithic transition, Mesolithic HBV strains were replaced by a lineage likely disseminated by early farmers that prevailed throughout western Eurasia for ~4000 years, declining around the end of the 2nd…
De la performance musicale dans la Guyane traditionnelle : expression cognitive singulière d?une musique-verbe
2021
Guianese culture and traditional music, here evoked, are various. It is more a transcultural process that, along centuries, gave an original result born in the Americas, in Guiana in this case. It is a form of refoundation, of recreation of cultures and new human beings generally called Creoles. The musical performance, that I study here, is the echo of social and cultural space of this reformulation of thought, life, and conception of the world. It is, as well, a mean of transposition and transformation of the values issued of diverse sources and categories. It is in no way a second-rate cultural practice, as it is the place where were born philosophies and actions for common life as well …
Staging American Nights : Représentations de l’intime et mises en scène de la nuit aux Amériques
2020
Aux rêveurs noctambules de tout temps, aux « dériveurs » nocturnes, la nuit est réservoir de symboles, éveil d’un monde intérieur, souvenirs et obsessions intimes, révélation de l’inconscient, autre jubilation dionysiaque. Rêve d’encre aussi, veille des créateurs dans la nuit théophanique quand mystique de la nature et mystique intime s’y lovent : c’est la nuit obscure de St-Jean de la Croix, ténèbres de l’âme abandonnée, et la Sainte pénombre des pré-romantiques et romantiques allemands (Goë...
Una poética de las ruinas. Testimonio y alegoría de Aníbal Quijada
2009
El texto de Aníbal Quijada Cerco de púas ejemplifica la doble vinculación de los testimonios del exilio chileno. Por una parte, éstos debieron inscribirse en las estrategias internacionales de denuncia contra la dictadura militar y, por otra, la comunidad cultural latinoamericana hizo de los testimonios un elemento esencial para la redefinición del concepto mismo de lo literario. El testimonio de Quijada desarrolla, en ese contexto, unas estrategias narrativas y de representación que alejan su textura de la mayoría de los testimonios de la época.The text of Aníbal Quijada Cerco de púas, is a good example of the double filiation of the testimonies of Chilean exile. In one hand these testimon…