Sympatric and allopatric karyotypic conditions are verified in Astyanax scabripinnis (Souza & Moreira-Filho, 1995a; b). For instance, species-specific cytotypes were identified in A. parahybae, A.

We conducted an experimental test of this hypothesis in Rhagoletis pomonella, a model for sympatric ecological speciation. Contrary to expectations, we found widespread divergence throughout the ...

Niche differences between two sympatric whiptail lizards (Cnemidophorus abaetensis and C. ocellifer, Teiidae) in the restinga habitat of northeastern Brazil Diferenças de nichos entre duas espécies ...

A systematic approach for understanding the pH-dependent speciation of molecular metal-oxide nanoclusters beyond ambient conditions, which combines computational predictions with X-ray total ...