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Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae) RChHN
Méndez,Marco A.; Soto,Eduardo R.; Correa,Claudio; Veloso,Alberto; Vergara,Eliseo; Sallaberry,Michel; Iturra,Patricia.
Bufo spinulosus has a wide and fragmented range distribution in Chile (18° to 33° S) along altitudinal and latitudinal gradients. Genetic variation was estimated using RAPD (Random Amplified Polymorphic DNA) markers in 10 populations from northern and central Chile. Morphometric and genetic information was analyzed as a function of geographical origin. The correlation between genetic and morphometric differentiation was analyzed by the Mantel test. An increase in body size as a function of latitude was observed. Specimens from El Tatio had the smallest body size and the greatest morphometric divergence. The AMOVA applied to genetic data indicated that 57.85 % of the variance is explained by interregional differences and that 30.12 % of the...
Tipo: Journal article Palavras-chave: Amphibians; Geographic variation; Morphometry; RAPDs; AMOVA.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300014
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