Search results for " America."
showing 10 items of 686 documents
Vindication of Ulota pygmaeothecia (Orthotrichaceae, Bryophyta)
2017
Ulota pygmaeothecia (Müll.Hal.) Kindb. and Ulota luteola (Hook.f. & Wilson) Wijk & Margad. are two epiphytic mosses from the evergreen Magellanic rainforests of southern South America. Both mosses have been considered as distinct species since their original description, with their specific status retained following the comprehensive review by Nicolajs Malta of South American Ulota (1927). Recently the synonymization of U. pygmaeothecia and U. luteola was proposed (Wang & Jia 2016), based mainly on the similarities stated in the protologues and the study of the available type specimens of U. pygmaeothecia and U. fulvella, as the type materials of U. luteola were lost in the mail…
Two complex typifications and a new name to unravel Ulota germana sensu Malta non (Mont.) Mitt. (Orthotrichaceae)
2020
Ulota germana is an epiphytic moss moderately common in oceanic areas of Patagonia (southern South America), one of the regions of the world where Ulota reaches a peak of diversity. It is easily recognized by very long perichaetial leaves, which reach the capsule when wet, an endostome of eight segments and verrucose spores. In Nikolajs Malta's revision of South American Ulota, a species was described under this name with apparently similar long perichaetial leaves and spores but with a 16-segment endostome, an uncommon character in this genus. No further references to this particular combination of traits are found throughout the literature of South American Ulota. In the same work, Malta …
The role of anthropogenic habitats in freshwater mussel conservation
2018
The data that supports the findings of this study are available in the supplementary material of this article.
Reinstatement of the Patagonian moss Ulota glabella Mitt. (Bryophyta, Orthotrichaceae)
2020
In 1842, J.D. Hooker collected a number of mosses on Hermite Island (Cape Horn region). From one of those gatherings, Hooker 141, four species of Ulota have been described: U. luteola, U. fuegiana, U. glabella, and U. eremitensis. The first two species are widely accepted, whereas the identity of the latter two has been recently discussed, and the names are now synonymized under U. fuegiana, the more widely distributed species in the Tierra del Fuego archipelago. Our studies, based on recent collections of Orthotrichaceae from Patagonia, show that specimens different from those of U. fuegiana and agreeing with the protologues of both U. glabella and U. eremitensis are common in Patagonia. C…
The politics of Argentina today: human rights and Kirchnerismo
2016
After the effects of bloody dictatorship that whipped the region, Argentina as many other Latin American countries experienced a great trauma which not only altered the ways politics was lived, but also undermined the social trust of citizens respecting to their institutions. The rise of Kirchneristes and Kirchnerismo post stock and market crisis of 2001, initiated a new age in Argentina. Kirchnerismo opened the doors for the vindication of many claims of human rights organisations, but at the same time, the discourse of human rights was adjusted to the interests of Cristina Kirchner and her followers. As a result of this, the cause of human rights allowed government to produce a new way of…
Secular trends in Dietary Inflammatory Index among adults in the United States, 1999-2014.
2018
Objective: The objective of this study was to evaluate secular trends in Dietary Inflammatory Index (DII) scores in the United States between 1999 and 2014. Methods: Data from adults over 19 years from the 1999 to 2014 National Health and Nutrition Examination Survey (N = 39,191) were used. DII scores, at each 2-year cycle, were evaluated from a 24-h recall, including 26 food parameters for DII calculation. Analyses were conducted in 2018. Results: For the entire sample, there was a quadratic trend (Ptrend < 0.001), with the DII scores peaking in 2003–2004, and then decreasing during the cycles from 2005 to 2014. Similar quadratic trends (Ptrend < 0.001) were observed by age, gender, …
Universidad e Hispanidad. Tres décadas de trayectorias entrecruzadas del ministro José Ibáñez Martín y el catedrático exiliado Mariano Ruiz-Funes
2017
Presentamos la lucha desde el exilio intelectual republicano contra dos de las políticas del franquismo, la reforma de la universidad y la apropiación del término de hispanidad para los fines propagandísticos y proselitistas del nuevo régimen. Estas cuestiones son tratadas a partir de las trayectorias profesionales y vitales de dos políticos destacados, Mariano Ruiz-Funes y José Ibáñez Martín, desde sus inicios en la provincia de Murcia durante la década de 1920, en la cátedra de derecho penal uno y de enseñanza secundaria el otro, su militancia política, los servicios en misiones internacionales durante la guerra y, finalmente, la actividad de uno en la Unión de Profesores Universitarios E…
SARS-CoV-2 and COVID-19: A genetic, epidemiological, and evolutionary perspective
2020
In less than five months, COVID-19 has spread from a small focus in Wuhan, China, to more than 5 million people in almost every country in the world, dominating the concern of most governments and public health systems. The social and political distresses caused by this epidemic will certainly impact our world for a long time to come. Here, we synthesize lessons from a range of scientific perspectives rooted in epidemiology, virology, genetics, ecology and evolutionary biology so as to provide perspective on how this pandemic started, how it is developing, and how best we can stop it.
Reconstructing the deep population history of Central and South America
2018
We report genome-wide ancient DNA from 49 individuals forming four parallel time transects in Belize, Brazil, the Central Andes, and the Southern Cone, each dating to at least ∼9,000 years ago. The common ancestral population radiated rapidly from just one of the two early branches that contributed to Native Americans today. We document two previously unappreciated streams of gene flow between North and South America. One affected the Central Andes by ∼4,200 years ago, while the other explains an affinity between the oldest North American genome associated with the Clovis culture and the oldest Central and South Americans from Chile, Brazil, and Belize. However, this was not the primary sou…
DNA multigene characterization of Fasciola hepatica and Lymnaea neotropica and its fascioliasis transmission capacity in Uruguay, with historical cor…
2017
Background Fascioliasis is a pathogenic disease transmitted by lymnaeid snails and recently emerging in humans, in part due to effects of climate changes, anthropogenic environment modifications, import/export and movements of livestock. South America is the continent presenting more human fascioliasis hyperendemic areas and the highest prevalences and intensities known. These scenarios appear mainly linked to altitude areas in Andean countries, whereas lowland areas of non-Andean countries, such as Uruguay, only show sporadic human cases or outbreaks. A study including DNA marker sequencing of fasciolids and lymnaeids, an experimental study of the life cycle in Uruguay, and a review of hum…