MELO-SILVA, M.; OLIVEIRA, F. R.; ROSA, J.; GEMELLI, E.; SANTOS, L.; BUENO-KRAWCZYK, A. C. DE D. <b>Comparison of nuclear abnormalities in <i>Astyanax bifasciatus</i&gt; Cuvier, 1819 (Teleostei: Characidae) of two sections of rivers from the middle Iguaçu. Acta Scientiarum. Biological Sciences, v. 40, n. 1, p. e40669, 1 jul. 2018.