Karyotype description of five species of Pimelodidae(Teleostei, Siluriformes)

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概要

• 論文の詳細を見る

• Karyotypes of five pimelodid fish species analyzed were as follow : Pimelodella avanhandavae (2n=46 ; 20m+20sm+6st), Heptapterus longicauda (2n=52 ; 22m+26sm+4st), Microglanis cottoides (2n=54 ; 22m+20sm +12st), Pimelodus maculatus (2n=56 ; 20m+20sm+ 10st+6a), and Cetopsorhamdia iheringi (2n=58 ; 28m+24sm+6st). Ag-NORs appeared in two pairs in Heptapterus longicauda, and only one pair in four other species. C-banding patterns were different in each species. Among them Pimelodus maculatus and Cetopsorhamdia iheringi revealed a large amount of C-heterochromatin, indicating species specific heteromorphism in the C-banding pattern. The present cytogenetic results confirm a high chromosomal variability in the family Pimelodidae and suggest that such chromosomal variability plays a role in the evolution of this fish group.

• 財団法人染色体学会の論文

著者

• Oliveira C

  Unesp Sp Bra

• Vissotto P.C.

  Departamento de Morfologia, Instituto de Biociencias, UNESP

• Foresti F.

  Departamento de Morfologia, Instituto de Biociencias, UNESP

• Oliveira C.

  Departamento de Morfologia, Instituto de Biociencias, UNESP

• Foresti F

  Unesp Sp Bra

• Foresti F.

  Departamento De Morfologia Instituto De Biociencias Unesp Campus De Botucatu

• Vissotto P

  Departamento De Morfologia Instituto De Biociencias Unesp:centro De Aquicultura Da Unesp

• Oliveira C.

  Departamento De Morfologia Instituto De Biociencias Unesp Campus De Botucatu

関連論文

• Supernumerary chromosomes in two species of the family Pimelodidae(Teleostei, Siluriformes)
• Karyotype description of five species of Pimelodidae(Teleostei, Siluriformes)
• A ZZ/ZW Sex Chromosome System in Imparfinis mirini (Pisces, Siluriformes)
• Comparative Cytogenetic Studies in Alopatric Populations of Trichomycterus paolence Eigenmann, 1918 from Southeastern Brazil (Siluriformes, Trichomycteridae)

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