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POPULATION GENETICS OF THE CHILEAN FROG BATRACHYLA LEPTOPUS (LEPTODACTYLIDAE)
J.R. Formas and L.M. Brieva Instituto de Zoología, Universidad Austral de Chile, Casilla 567, Valdivia, Chile. Send correspondence to J.R.F. Fax: +56-63-221-315. E-mail: [email protected]
Electrophoretic variation of proteins encoded by 14 loci was analyzed in eight (five continental and three insular) populations of the Chilean leptodactylid frog Batrachyla leptopus. 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 (Fit) of 0.855 and high levels of genetic subdivision (Fst = 0.596) as well as of inbreeding within populations (Fis = 0.640). However, there was only a moderate level of genetic differentiation (Fst = 0.181) between the insular group of populations and the continental group.
Genet. Mol. Biol. vol.23 n.1 São Paulo Mar. 2000.
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