title: Evidence for heteromorphic sex chromosomes in male amphibians (Anura: Leptodactylidae).
abstract: In Eupsophus migueli, an anuran species endemic to southern Chile, all males examined have a heteromorphic pair of chromosomes, a small metacentric and a telocentric of the same size. In females, the corresponding pair, No. 14, is telocentric. This suggests that this species has an XX/XY system of sex chromosomes. The male is the heterogametic sex.
mesh_terms: D000818:Animals; D001001:Anura / Q000235:genetics*; D005260:Female; D007621:Karyotyping; D008297:Male; D011110:Polymorphism, Genetic; D012730:Sex Chromosomes / Q000648:ultrastructure*; D014960:X Chromosome / Q000648:ultrastructure; D014998:Y Chromosome / Q000648:ultrastructure