C-banded karyotype and nucleolus organizer regions of a notopterid fish, Notopterus chitala (Notopteridae, Osteoglossiformes)

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概要

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• C-banded karyotype and nucleolus organizing regions (NORs) of a notopterid fish, Notopterus chitala (Osteoglossiformes), were studied. The diploid chromosome number was 42 and all were acrocentric. Secondary constriction (SC) was found in a small pair. C-bands were located in centromeric regions of all chromosomes. In addition, interstitial C-bands occurred in two pairs of the largest group and a small pair which had SC. Ag-NORs were located in the SC of the small pair. These findings suggest that tandem fusion rather than Robertsonian rearrangements may provide an important role in karyotype evolution in the Osteoglossiformes.

• 財団法人染色体学会の論文

著者

• Ojima Yoshio

  School of Science, Kwansei Gakuin University

• Takai Akinori

  Laboratory Of Environmental Science Osaka Shin-ai College

• Ojima Yoshio

  School Of Science Kwansei Gakuin University

関連論文

• C-banded karyotype and nucleolus organizer regions in a discus fish, Symphysodon aequifasciata axelrodi(Cichlidae, Perciformes)
• Constitutive Heterochromatin Distribution in the Chromosomes of Pomacentrid Fishes (Perciformes)
• Genotoxicity monitoring of polluted river water using a fish micronucleus test(Symposium I : Monitoring of water environment and aquatic organism)(Abstracts of the 50th Annual Meeting of the Society of Chromosome Research)
• C-banded karyotype and nucleolus organizer regions of a notopterid fish, Notopterus chitala (Notopteridae, Osteoglossiformes)

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