De Almeida Toledo, L. F.Foresti, F. [UNESP]De Almeida Toledo Filho, S.2014-05-272014-05-271985-05-01Genetica, v. 66, n. 2, p. 85-88, 1985.0016-67071573-6857http://hdl.handle.net/11449/63715The occurrence of a natural triploid among diploid individuals of Eigenmannia sp from the Amazon basin is described. The diploid individuals had 2n=31 and 32 chromosomes, the difference in chromosome number being due to a Robertsonian rearrangement. The triploid individual presented 2n=46 and had two fused acrocentrics. NOR activity was present in the three homologues of triploid and a NOR polymorphism was detected in the triploid and diploids. © 1985 Dr W. Junk Publishers.85-88engArtigo10.1007/BF00139713WOS:A1985AKF5400002Acesso restrito2-s2.0-00024468990804793944846367