Dias, A. L.Foresti, F.2014-05-202014-05-201993-09-01Revista Brasileira de Genetica. Ribeirao Pret: Soc Brasil Genetica, v. 16, n. 3, p. 585-600, 1993.0100-8455http://hdl.handle.net/11449/37710Four fish species of the family Pimelodidae were analyzed. Bergiaria westermani and two different Pimelodus species have the same diploid chromosome number (2n - 56). Despite some differences in chromosome structure, these species are highly similar in karyotype and differ from Pimelodella sp., which presents a reduction in chromosome number to 2n = 46. The data confirm the extensive chromosome variability existing in this family, characterized by intraindividual and/or population polymorphisms of a structural nature which may or may not be sexlinked, and by the presence of supernumerary chromosomes.585-600engArtigoWOS:A1993MC77000006Acesso abertoWOSA1993MC77000006.pdf0804793944846367