Ecología genética y sistemas de reconocimiento de pareja en poblaciones simpátricas de rotíferos

摘要: This dissertation is a study of the population structure and dynamics, and the differentiation of specific mate recognition systems, including their ecological context, in populations of the common brackish water rotifer Brachionus plicatilis in the Prat de Cabanes-Torreblanca, a wetland having a high habitat diversity. Using allozyme electrophoresis, we analyzed the population structure of this taxon during more than an annual cycle. We also performed mating tests between strains, including genetically distinct strains collected in the marsh, and allopatric strains collected worldwide, and studied the ecological factors that explain the seasonal succession found in the marsh, and the patterns of sexual reproduction in natural populations. Our results help to better understand the ecological diversity and evolutionary dynamics of monogonont rotifer populations, as they show that B. plicatilis, usually considered a …