Supernumerary chromosomes in two species of the family Pimelodidae(Teleostei, Siluriformes)

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概要

• 論文の詳細を見る

• Cytogenetic studies were carried out on two pimelodid catfish species belonging to the family Pimelodidae. Iheringichthys labrosus showed 2n=56 (22m+18sm+10st+6a) with small acrocentric supernumerary or B chromosome in varying of the number of 0 to 1. Rhamdia cf hilarii showed 2n=58 (30m+18sm+10st) and had one to three small metacentric B chromosomes. Theses results provided further information of the widely distribution of B chromosomes in the family Pimelodidae. Two species possessed Ag-NORs in only one pair. The C-banding patterns of the two species differed greatly in location and amount of constitutive heterochromatin. Moreover, the B chromosome of I. labrosus was not positive to C-banding, while all B chromosomes of Rhamdia were totally heterochromatic.

• 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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