Histological observations of gonadal sex differentiation in the F_2 hybrid sturgeon, the bester

この論文にアクセスする

この論文をさがす

著者

抄録

The process of gonadal sex differentiation in the F<sub>2</sub> hybrid sturgeon, the bester (<i>Huso huso</i> female × <i>Acipenser ruthenus</i> male), was investigated histologically. In fish more than 6 months old, two types of gonads were distinguishable. In the putative ovary, the germinal epithelium had invaginations in the stroma of the gonad, and a few germ cells were localized immediately below the epithelium. In putative testis, invaginations were lacking and germ cells were observed deep in the stroma. However, active mitotic and meiotic germ cells were not observable even by 16 months of age in ovaries, and only some of the testes showed initiation of spermatogenesis by 21 months of age. The invaginations in the stroma of putative ovaries developed into ovarian lamella-like structures, whereas the gonadal surface of putative testes remained smooth. These results suggest that the formation of invaginations in the stroma of gonads is the morphological index of ovarian differentiation and that it is necessary to start hormone treatment for functional sex reversal before 6 months of age in these fish.

収録刊行物

  • Fisheries science : FS

    Fisheries science : FS 67(6), 1104-1110, 2001-12-01

    The Japanese Society of Fisheries Science

参考文献:  12件中 1-12件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10008271554
  • NII書誌ID(NCID)
    AA10993718
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09199268
  • NDL 記事登録ID
    6015509
  • NDL 雑誌分類
    ZR26(科学技術--農林水産--水産)
  • NDL 請求記号
    Z54-H592
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ