Phylogenetic and phylogeographic analysis of the genus Orestias (Teleostei: Cyprinodontidae) in the southern Chilean Altiplano: the relevance of ancient and recent divergence processes in speciation. Issue 3 (8th February 2013)

• Record Type: Journal Article
• Authors: Vila, I.; Morales, P.; Scott, S.; Poulin, E.; Véliz, D.; Harrod, C.; Méndez, M. A.
• Is Part Of: Journal of fish biology. Volume 82:Issue 3(2013)
• Page Start: 927
• Page End: 943
• Publication Date: 2013-02-08
• Subjects: Fishes -- Periodicals; Fishes -- Great Britain -- Periodicals; 597
• DOI: 10.1111/jfb.12031
• Languages: English
• ISSNs: 0022-1112

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>This study presents phylogenetic molecular data of the Chilean species of <italic>Orestias</italic> to propose an allopatric divergence hypothesis and phylogeographic evidence that suggests the relevance of abiotic factors in promoting population divergence in this complex. The results reveal that diversification is still ongoing, <italic>e.g</italic>. in the Ascotán salt pan, where populations of <italic>Orestias ascotanensis</italic> restricted to individual freshwater springs exhibit strong genetic differentiation, reflecting putative independent evolutionary units. Diversification of <italic>Orestias</italic> in the southern Altiplano may be linked to historical vicariant events and contemporary variation in water level; these processes may have affected the populations from the Plio‐Pleistocene until the present.</p> </abstract>