Karyotypic Studies in the Characidae Fish, Genus Astyanax. An Endemic and Highly lsolated Population of Astyanax sp.

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The chromosomes of Astyanax sp. is now described for the first time. Ten specimens of a highly isolated population from the Sinkhole 1 (Vila Velha State Park, Ponta Grossa, PR, Brazil) were analyzed, with the characterization of the karyotype, constitutive heterochromatin and nucleolar organizer regions. Males and females of this species present a similar karyotypic structure (2n=48, 6M+18SM+14ST+10A), without morphologically differentiated sex chromosomes. A great variability concerning the heterochromatin located on the subtelo-acrocentric chromosomes appears also in this species, accordingly to that occur in some other Astyanax species.

収録刊行物

  • Cytologia : international journal of cytology

    Cytologia : international journal of cytology 67(2), 123-128, 2002-06-25

    Japan Mendel Society, International Society of Cytology

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各種コード

  • NII論文ID(NAID)
    10008840442
  • NII書誌ID(NCID)
    AA00622764
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00114545
  • データ提供元
    CJP書誌  J-STAGE 
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