Description of karyotype in Hypostomus regani (lhering, 1905) (Teleostei, Loricariidae) from the Piumhi river in Brazil with comments on karyotype variation found in Hypostomus

Autor(es)

Mendes-Neto, Ernani de Oliveira ^[1] ; Vicari, Marcelo Ricardo ^[2] ; Artoni, Roberto Ferreira ^[2] ; Moreira-Filho, Orlando ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Genet & Evolucao, BR-13560 Sao Carlos, SP - Brazil

^[2] Univ Estadual Ponta Grossa, Dept Biol Estrutural Mol & Genet, Ponta Grossa, PR - Brazil

• Tipo de documento: Artigo Científico
• Fonte: COMPARATIVE CYTOGENETICS; v. 5, n. 2, p. 133-142, 2011.
• Citações Web of Science: 19

Resumo

The paper represents a comparative cytogenetic analysis of three populations of Hypostomus regani in Brazil. Two populations belong to the Upper Parana River Basin and the third one, the karyotype of which is described for the first time, was probably introduced into the Sao Francisco River Basin through transposition from the Piumhi River. Karyotype features of populations of H. regani from the Piracicaba and Tiete River Basins are also discussed. The occurrence of H. regani in the Sao Francisco River Basin is reported for the first time here. The study also revealed distinct differences in the location of the Ag-NORs between the analyzed populations that enable individuals from the Piumhi River, Mogi-Guacu River and Tiete River to be distinguished from one another. Thus, the data obtained indicate the possibility of geographic variation fixing different karyotypes even in the same basin of origin. (AU)

• Processo FAPESP: 06/54290-6 - Estudos citogenéticos em algumas espécies de Loricadiidae (Teleostei, Siluriformes) da região de transposição do rio Piumhi para o Rio São Francisco
• Beneficiário: Ernani de Oliveira Mendes Neto
• Modalidade de apoio: Bolsas no Brasil - Mestrado