Annual Changes in Oocyte Development and Serum Vitellogenin Level in the Rabbitfish Siganus canaliculatus (Park) in Okinawa, Southern Japan

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Annual changes in oocyte development in the ovary and serum vitellogenin, an egg yolk precursor, were investigated in the rabbitfish, Siganus canaliculatus, in Okinawa, southern Japan. The progression of oocyte development was histologically divided into eight stages; the chromatin-nucleolus, perinucleolus, oil-droplet, primary yolk, secondary yolk, tertiary yolk, migratory nucleus and maturation stages. The oocytes laden with yolk first appeared in March. From April through June, the stage composition of oocytes was characterized by a high percentage of oocytes advanced beyond the primary yolk stage and was correlated with the increase of gonado-somatic index (GSI). Post-ovulatory follicles could be observed in the ovaries in May. The GSI values gradually decreased after June and were maintained at low levels from October through February. During these months, the ovaries were occupied by the immature oocytes at the chromatin-and peri-nucleolus stages. Vitellogenin, which was measured immunologically with rabbit anti-rabbitfish vitellogenin antiserum, changed in accordance well with the monthly fluctuation of GSI as well as development of oocytes laden with yolk. These results suggest that S. canaliculatus starts vitellogenesis in March and spawns several times in the following three months in Okinawa.

収録刊行物

  • Fisheries science : FS  

    Fisheries science : FS 64(1), 44-51, 1998 

    公益社団法人 日本水産学会

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各種コード

  • NII論文ID(NAID)
    10004873043
  • 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
    4406502
  • 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 
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