Natural triploidy in Leporinus cf. elongatus bearing sex chromosomes

Genetics and Molecular Biology

Wagner Franco Molina²  Vladimir Pavan Margarido¹  Pedro Manoel Galetti Jr¹ 

[1] ,Universidade Federal do Rio Grande do Norte Departamento de Biologia Celular e Genética Natal RN ,Brazil

关键词: polyploidy;    triploid fish;    ZW chromosomes;    sex chromosomes;    Anostomidae;   

DOI  :  10.1590/S1415-47572007000400010

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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