Luís Felipe Toledo, Diego Llusia, Conrado A. Vieira, Milena Corbo, Rafael Márquez. Bioacoustics. 24 (2015). Sympatric species tend to be less often grouped by call similarity than allopatric species, with 0–15% of sympatric species grouped for both similarity methods. However, associations between variables were not confirmed by frequency distributions in contingency tables or by similarity values in the pairs of sympatric and allopatric species. Leer más.