KARYOTYPE AND NUCLEOLUS ORGANIZER REGIONS OF PYRRHULINA CF AUSTRALIS (PISCES, CHARACIFORMES, LEBIASINIDAE)
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Undergraduate course
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Soc Brasil Genetica
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Article
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Acesso aberto
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Abstract
The mitotic chromosomes and nucleolus organizer regions (NORs) of the Upper Parana Basin fish Pyrrhulina cf. australis were studied. The karyotype (2n = 40; 6st + 34a) is characterized by the presence of four chromosome pairs with NORs, one of them with NORs in both terminal regions. Comparison of this karyotype with those of other Characiformes, revealed a strong similarity to the family Erythrinidae.
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English
Citation
Revista Brasileira de Genetica. Ribeirao Pret: Soc Brasil Genetica, v. 14, n. 3, p. 685-690, 1991.
