Gayana (Jan 2010)
Variabilidad genética local del bivalvo dulceacuícola Diplodon chilensis (Gray 1828) proveniente de tres lagos Nahuelbutanos Local genetic variability of the freshwater bivalve Diplodon chilensis (Gray 1828) from three Nahuelbuta lakes
Abstract
Se describe la variabilidad genética del bivalvo dulceacuícola Diplodon chilensis proveniente de tres lagos Nahuelbutanos, cada uno de los cuales presenta barreras geográficas y diferencias ambientales reconocibles como consecuencia de diversos eventos geomorfológicos y antrópicos. Nuestros resultados revelaron que sólo Lago Lleu-Lleu se encuentra de equilibrio Hardy- Weinberg (PGenetic variability of a freshwater bivalve Diplodon chilensis from three Nahuelbuta lakes was described. Each lake shows geographic barriere and environmental characteristics as a consequence of geomorphologic and antropic events. Our results shows that only Lleu-Lleu lake was in Hardy-Weinberg equilibrium (P<0.05). All populations show gametic desequilibrium (P < 0.001), as an evidence of the species' life cycle. There are heterozygote deficiencies (Fis) in Laguna La Posada and Laguna Chica de San Pedro. Global Fst (0.027) and AMOVA test values for pooling subpopulation show non structured population, as an evidence of recent migration process.
