SciELO - Scientific Electronic Library Online

vol.30 issue3Polymorphism of exon 2-3 of bovine major histocompatibility complex class I BoLa-A geneMicrosatellite variability analysis in farmed catfish (Ictalurus punctatus) from Tamaulipas, Mexico author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Genetics and Molecular Biology

Print version ISSN 1415-4757
On-line version ISSN 1678-4685


MOLINA, Wagner Franco; MARGARIDO, Vladimir Pavan  and  GALETTI JR, Pedro Manoel. Natural triploidy in Leporinus cf. elongatus bearing sex chromosomes. Genet. Mol. Biol. [online]. 2007, vol.30, n.3, pp.567-569. ISSN 1415-4757.

Although several cases of natural triploidy in fish have already been described, spontaneous polyploidy in species with differentiated sex chromosomes are rare. We report the occurrence of a triploid fish (3n = 81) Leporinus cf. elongatus, a species characterized by a highly differentiated ZZ/ZW sex chromosome system, from the São Francisco river. The occurrence of a ZZZ triploid adult indicates the viability of this chromosome constitution in this fish.

Keywords : polyploidy; triploid fish; ZW chromosomes; sex chromosomes; Anostomidae.

        · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License