Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)

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...

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Autores principales:	Méndez,Marco A., Soto,Eduardo R., Correa,Claudio, Veloso,Alberto, Vergara,Eliseo, Sallaberry,Michel, Iturra,Patricia
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2004
Materias:	amphibians geographic variation morphometry RAPDs AMOVA
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300014
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spelling	oai:scielo:S0716-078X20040003000142004-10-21Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)Méndez,Marco A.Soto,Eduardo R.Correa,ClaudioVeloso,AlbertoVergara,EliseoSallaberry,MichelIturra,Patricia amphibians geographic variation morphometry RAPDs AMOVA 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 variance is found within populations. Low levels of within-regions genetic differentiation was observed in northern populations while higher levels of genetic differentiation was found in populations from central Chile. Mantel tests revealed a significant, positive correlation between genetic variation and geographic distance. When we excluded El Tatio population, Mantel test analyses showed significant correlations between morphological distance and genetic and geographic distances. We discuss whether water temperature could explain the morphological divergence observed in individuals from El Tatioinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.77 n.3 20042004-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300014en10.4067/S0716-078X2004000300014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	amphibians geographic variation morphometry RAPDs AMOVA
spellingShingle	amphibians geographic variation morphometry RAPDs AMOVA Méndez,Marco A. Soto,Eduardo R. Correa,Claudio Veloso,Alberto Vergara,Eliseo Sallaberry,Michel Iturra,Patricia Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
description	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 variance is found within populations. Low levels of within-regions genetic differentiation was observed in northern populations while higher levels of genetic differentiation was found in populations from central Chile. Mantel tests revealed a significant, positive correlation between genetic variation and geographic distance. When we excluded El Tatio population, Mantel test analyses showed significant correlations between morphological distance and genetic and geographic distances. We discuss whether water temperature could explain the morphological divergence observed in individuals from El Tatio
author	Méndez,Marco A. Soto,Eduardo R. Correa,Claudio Veloso,Alberto Vergara,Eliseo Sallaberry,Michel Iturra,Patricia
author_facet	Méndez,Marco A. Soto,Eduardo R. Correa,Claudio Veloso,Alberto Vergara,Eliseo Sallaberry,Michel Iturra,Patricia
author_sort	Méndez,Marco A.
title	Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
title_short	Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
title_full	Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
title_fullStr	Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
title_full_unstemmed	Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)
title_sort	morphological and genetic differentiation among chilean populations of bufo spinulosus (anura: bufonidae)
publisher	Sociedad de Biología de Chile
publishDate	2004
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300014
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Morphological and genetic differentiation among Chilean populations of Bufo spinulosus (Anura: Bufonidae)

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