We studied the demography of nine populations of the epiphyte <em>Tillandsia recurvata</em> established on <em>Prosopis laevigata</em> in the Tehuacán region, in the Mexican state of Puebla, to evaluate whether they show demographic asynchrony, a basic condition for metapopulation persistence. These populations differed in the size of the occupied tree (volume of tree crown) and in their number of individuals. Two Lefkovitch matrices were built per population, one for 2001-2 and another one for 2002-3. Population structured differed between populations: those established on small trees had a higher seedling proportion whereas those on larger trees were dominated by adults. The projected λ values varied between populations and years, but no pattern was found to this variation, with the exception that there was a positive correlation between λ and population size for 2002-3. Population demography was asynchronous between populations, thus favouring metapopulation persistence.
El objetivo de este estudio fue estimar la variabilidad genética de una muestra poblacional de perros con fenotipo Poodle en Bogotá - Colombia. La variabilidad genética de 81 perros con fenotipo Poodle se estudió mediante el genotipado de cinco loci de microsatélites. La heterocigosidad esperada (HE) para los loci: AHTK253, CXX279, INU030, INU055 y REN162C04 fue de 0,747, 0,788, 0,767, 0,679 y 0,751, respectivamente. La HE para el conjunto de la población fue de 0,746. La población de Poodles analizada tuvo una alta diversidad genética y se encontró que no existe una subestructuración poblacional, hecho que desvía el equilibrio HW; con lo que demuestra que la población de Poodle colombiana sea una perfecta candidata para estudios de asociación genética, y de conservación de la biodiversidad de los animales domésticos.
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