| molecular cytogenetics of oligosarcus hepsetus (teleostei, characiformes) from two brazilian locations. | karyotype and cytogenetic markers of oligosarcus hepsetus from two brazilian locations in the paraiba do sul river basin (brazil) were investigated using differential staining techniques (c-banding, silver (ag)- and chromomycin a3 (cma3)-staining) and fluorescent in situ hybridization (fish) using 18 s rdna and 5s rdna probes. the diploid chromosome number was invariably 2n = 50 with 3 pairs of metacentric, 5 pairs of submetacentric, 8 pairs of subtelocentric and 9 pairs of acrocentric chromosom ... | 2005 | 16011006 |