Pimelodus maculatus Lacepede 1803

Pimelodus maculatus. The diploid number of this species was also 56 chromosomes (24 m + 20 sm + 6 st + 6 a) (Fig. 1c). The AgNORs were located in the terminal region of the long arm of a pair of subtelocentric chromosomes 23 (Fig. 1c, box). C-banding revealed the existence of pale heterochromatin in the region of the telomeres of some chromosomes, with more conspicuous heterochromatin being found in the telomeric region of the short arm (pair 6) and long arm (pairs 17, 22, 23 and 24), in both telomeres (pair 8) and the pericentromeric region of the short arm (pairs 1 and 25) and in long arm in pair 21 (Fig. 2c). The 18S rDNA and 5S rDNA showed syntenic sites in the terminal region of the long arm of a pair of subtelocentric chromosomes (23), which corresponds to the AgNORs (Fig. 3c).
Published as part of Girardi, Simone C., Pavanelli, Carla S. & Margarido, Vladimir P., 2018, Contributions to the systematic of Pimelodidae (Osteichthyes, Siluriformes): basic and molecular cytogenetics on seven species of Pimelodus from three Brazilian hydrographic systems, pp. 1-16 in Neotropical Ichthyology 16 (2) on page 6, DOI: 10.1590/1982-0224-20170148, http://zenodo.org/record/3709713