info:eu-repo/semantics/article
Early stages of divergence: phylogeography, climate modeling, and morphological differentiation in the South American lizard Liolaemus petrophilus (Squamata: Liolaemidae)
Fecha
2012-03Registro en:
Fontanella, Frank M.; Feltrin, Natalia; Avila, Luciano Javier; Sites, Jack W.; Morando, Mariana; Early stages of divergence: phylogeography, climate modeling, and morphological differentiation in the South American lizard Liolaemus petrophilus (Squamata: Liolaemidae); Wiley Blackwell Publishing, Inc; Ecology and Evolution; 2; 4; 3-2012; 792-808
2045-7758
CONICET Digital
CONICET
Autor
Fontanella, Frank M.
Feltrin, Natalia
Avila, Luciano Javier
Sites, Jack W.
Morando, Mariana
Resumen
This study examines the phylogeographic structure within the Patagonian lizard Liolaemus petrophilus and tests for patterns of between-clade morphological divergence and sexual dimorphism as well as demographic and niche changes associated with Pleistocene climate changes. We inferred intra-specific relationships, tested hypotheses for historical patterns of population expansion, and incorporated ecological niche modeling (ENM) with standard morphological and geometric morphometric analyses to examine between-clade divergence as indirect evidence for adaptation to different niches. The two inferred haploclades diverged during the early Pleistocene with the Southern clade depicting the genetic signature of a recent population increase associated with expanding niche envelope, whereas the Northern clade shows stable populations in a shrinking niche envelope. The combination of molecular evidence for post-isolation demographic change and ENM, suggest that the two haploclades have responded differently to Pleistocene climatic events.