Karyotype evolution in Curimatidae (Teleostei, Characiformes) from the Amazon region. II. Centric fissions in the genus Potamorhina

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Título:	Karyotype evolution in Curimatidae (Teleostei, Characiformes) from the Amazon region. II. Centric fissions in the genus Potamorhina
Autor:	Feldberg, Eliana Porto, Jorge Ivan Rebelo Nakayama, Celeste Mutuko Bertollo, Luiz Antônio Carlos
Palavras-chave:	Animals Cell Fish Karyotype Evolution Nonhuman Phylogeny Robertsonian Chromosome Translocation Animalsia Characiformes Curimatidae Potamorhina Potamorhina Latior Pristigaster Robertsonia Teleostei
Data do documento:	1993
Revista:	Genome
É parte de:	Volume 36, Número 2, Pags. 372-376
Abstract:	Using cytogenetic analysis following Giemsa staining, nucleolar organizer region (NOR) staining, and C-banding, three distinct karyotypes in three species of curimatids belonging to the fish genus Potamorhina were identified: 2n = 54/44 M + 10 SM (P. pristigaster), 2n = 56/52 M + 2 SM + 2 ST (P. latior), and 2n = 102/2 M + 2 SM + 98 A (P. altamazonica). A 2n = 54 was considered to be the ancestral diploid number and the different karyotypes were probably the result of centric fissions. Both the NOR pattern and constitutive heterochromatin pattern are species specific.
DOI:	10.1139/g93-051
Aparece nas coleções:	Artigos

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