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|Title:||Karyotype evolution in Curimatidae (Teleostei, Characiformes) from the Amazon region. II. Centric fissions in the genus Potamorhina|
Porto, Jorge Ivan Rebelo
Nakayama, Celeste Mutuko
Bertollo, Luiz Antônio Carlos
Robertsonian Chromosome Translocation
|metadata.dc.relation.ispartof:||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.|
|Appears in Collections:||Artigos|
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