Variación morfométrica y geográfica entre poblaciones de Hypsiboas cordobae (Anura: Hylidae) en Argentina

BARAQUET, MARIANA; GRENAT, PABLO R.; SALAS, NANCY E.; MARTINO, ADOLFO L.

Cuadernos de Investigación UNED

Universidad Estatal a Distancia, Costa Rica

Lugar: San José; Año: 2012 vol. 4 p. 147 - 155

1659-4266

Intraspecific phenotypic differentiation among geographically separated populations is common in anuran. We performed morphometric analyses of the endemic frog Hypsiboas cordobae in order to assess the geographic variation of morphometric variables along of distribution of the species. We measured 15 morphometric variables on 86 individuals from six localities of Córdoba and San Luís provinces. We found sexual dimorphism in 10 variables. The comparative analysis showed significant differences between populations and discriminant analyses showed high percentages of classification (87.50%). Eight morphometric variables showed positive correlation with latitude; and ten variables showed positive correlation with altitude. However, the correlations between morphometric distances and latitudinal/altitudinal were not significant. This geographic variation in the morphometry of the species may be due to environmental differences, or may be due to the age of individuals. Therefore, these data could be supplemented by studies directly related to the environmental conditions of each locality, as well as skeletochronological study to determine individual age.