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Evolutionary history of the Chilean frog genus Telmatobufo (Leptodactylidae): an immunological approach

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The quantitative micro-complement fixation technique was used to estimate degrees of relatedness and times of divergence between Caudiverbera and Telmatobufo. The data suggest that the lineages leading to Caudiverbera and Telmatobufo diverged about 35 million years ago. The divergence time among the three species of Telmatobufo was estimated to be 20-25 million years. Ouchterlony tests did not show immunological identity among T. australis and T. bullocki with Caudiverbera, while T. venustus showed partial identity. These analyses suggest that two groups can be recognized within the genus Telmatobufo. The molecular weights of albumins were similar among the Telmatobufo species and slightly lower in C. caudiverbera.

Se estimó el grado de parentesco y tiempo de divergencia entre Caudiverbera y Telmatobufo a través del ensayo de microfijación de complemento. Los resultados sugieren que el linaje que condujo a Caudiverbera y Telmatobufo divergió hace 35 millones de años. El tiempo de divergencia entre las especies de Telmatobufo se estimó entre 20-25 millones de años. El ensayo de Ouchterlony no mostró identidad inmunológica entre T. australis y T. bullocki con Caudiverbera, mientras que T. venustus mostró identidad parcial. Mediante estos análisis fue posible reconocer dos grupos dentro de Telmatobufo. Los pesos moleculares de las albúminas fueron similares entre las especies de Telmatobufo y un poco más bajo en Caudiverbera.

Affiliations: 1: Instituto de Zoología, Universidad Austral de Chile, Casilla 567, Campus Isla Teja, Valdivia, Chile


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