Structural and Numerical Chromosome Diversification in Marine Perciformes (Priacanthidae and Gerreidae)

この論文にアクセスする

この論文をさがす

著者

抄録

The Perciformes are characterized by a remarkable chromosomal homogeneity, with a small percentage of its representatives bearing diploid numbers higher or lower than their putative basal number (2<i>n</i>=48). Due to the wide diversity of this group, several families from this order lack cytogenetic reports, such as Gerreidae and Priacanthidae. Chromosomal analyses were carried out in the species <i>Diapterus olithostomus</i> (Gerreidae) and <i>Priacanthus arenatus</i> (Priacanthidae), from Brazilian coast. The karyotype of <i>D. olithostomus</i> is composed by 2<i>n</i>=48 (NF=48), while <i>P. arenatus</i> presented 2<i>n</i>=52 (4st+48a; FN=56). C-banding analysis revealed heterochromatic blocks on centromeric and/or interstitial regions in the 2 species. In <i>D. olithostomus</i>, GC-rich blocks were identified at interstitial position and on ribosomal sites. This species shows the typical karyotype pattern of Perciformes, but the presence of GC-rich interstitial heterochromatin, as well as the presence of 2<i>n</i>>48 in <i>P. arenatus</i>, represents possible autopomorphies. The results report both structural and numerical rearrangements within this order.

収録刊行物

  • Cytologia : international journal of cytology  

    Cytologia : international journal of cytology 71(3), 237-242, 2006-09-25 

    Japan Mendel Society, International Society of Cytology

参考文献:  25件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10018105369
  • 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 
ページトップへ