Cromosomas de especies americanas de <i>Sida</i> (Malvaceae)

Electroforesis bidimensional de campos pulsados en minicámaras para caracterizar los cromosomas de Cryptococcus neoformans: procedimiento bioinformático

Cryptococcus neoformans is a pathogenic yeast that causes meningoencephalitis, specially in AIDS patients. Epidemiological studies of clinical isolates have been encouraged due to the increase in its incidence for infection monitoring and control. Pulsed Field Gel Electrophoresis (PFGE) is the most popular technique for microbial molecular subtyping with epidemiological purpose, because of its ...

Regulaci\'on de especies competitivas bajo modelos impulsivos de pesca-siembra regidos por operadores maximales

INTRODUCCIÓN Las ecuaciones diferenciales impulsivas se han comenzado a usar recientemente con éxito para modelar el comportamiento de la biomasa de poblaciones individuales ante esquemas de captura pulsante masiva y peŕıodos de veda. (ver p. ej [2]) En ciertos ámbitos lacustres en que se permite de forma habitual la pesca deportiva tiene lugar un esquema distinto ya que la pesca se realiza de ...

Cambios Rpidos en las Directrices en Comunidades de Pescadores de Yangtze y en la Memoria Local de Especies Extintas

Local ecological knowledge can provide a unique source of data for conservation, especially in efforts to investigate the status of rare or possibly extinct species, but it is unlikely to remain constant over time. Loss of perspective about past ecological conditions caused by lack of communication between generations may create “shifting baseline syndrome,” in which younger generations are les...

Batrachochytrium dendrobatidis y el Colapso de la Riqueza de Especies y Abundancia de Anuros en el Parque Nacional del Manu, Sureste de Per

Amphibians are declining worldwide, but these declines have been particularly dramatic in tropical mountains, where high endemism and vulnerability to an introduced fungal pathogen, Batrachochytrium dendrobatidis (Bd), is associated with amphibian extinctions. We surveyed frogs in the Peruvian Andes in montane forests along a steep elevational gradient (1200–3700 m). We used visual encounter su...

Vaccination antirougeoleuse: Etude de l'immunité humorale chez les enfants Vaccinés de la région de Tunis