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Genetic Variability and Population Structure in the Lizard Genus Petrosaurus (Iguanidae)

M. Angeles Aguilars-S., Jack W. Sites, Jr. and Robert W. Murphy
Journal of Herpetology
Vol. 22, No. 2 (Jun., 1988), pp. 135-145
DOI: 10.2307/1563992
Stable URL: http://www.jstor.org/stable/1563992
Page Count: 11
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Genetic Variability and Population Structure in the Lizard Genus Petrosaurus (Iguanidae)
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Abstract

An electrophoretic survey of the rock lizard genus Petrosaurus was undertaken to assess the degree of divergence between the two species, P. mearnsi and P. thalassinus, and to estimate the level of population subdivision within P. thalassinus. Fourteen of 34 enzyme products resolved vary within or between the two species. The distinctness of the two species is confirmed, and the overall levels of divergence among populations of P. thalassinus are relatively low. Despite its small, linear range, P. thalassinus exhibits a high gene-flow pattern characteristic of more two-dimensional geographic ranges, and shows levels of genic heterozygosity and population subdivision roughly equivalent to several other iguanid lizards for which population genetic data sets are available.

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