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<p><strong>POPULATION GENETICS OF THE CHILEAN FROG<em> BATRACHYLA LEPTOPUS</em> (LEPTODACTYLIDAE)</strong> </p> <p><em><strong>J.R. Formas and L.M. Brieva</strong> <br>Instituto de Zoología, Universidad Austral de Chile, Casilla 567, Valdivia, Chile. <br>Send correspondence to J.R.F. Fax: +56-63-221-315. E-mail: <a href="mailto:%20rformas@valdivia.uca.uach.cl">rformas@valdivia.uca.uach.cl</a></em></p> <p> </p> <p>Electrophoretic variation of proteins encoded by 14 loci was analyzed in eight (five continental and three insular) populations of the Chilean leptodactylid frog <em>Batrachyla leptopus</em>. The overall proportion of polymorphic loci was estimated to be 18.7% and the average number of alleles per locus, 1.2, while observed and expected heterozygosities were 1.7 and 5.1%, respectively. The estimated coefficient of genetic identity was 0.940; the corresponding figure for genetic distance was 0.063. F-statistics analysis showed a total inbreeding coefficient (F<sub>it</sub>) of 0.855 and high levels of genetic subdivision (F<sub>st</sub> = 0.596) as well as of inbreeding within populations (F<sub>is</sub> = 0.640). However, there was only a moderate level of genetic differentiation (F<sub>st</sub> = 0.181) between the insular group of populations and the continental group. </p> <p><em>Genet. Mol. Biol. vol.23 n.1 São Paulo Mar. 2000.</em></p>
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