冬季におけるLHRH‐aコレステロールペレットのマダイに対する成熟・産卵促進効果

書誌事項

タイトル別名
  • Effect of LHRH-a Cholesterol Pellet on Gonadal Development, Maturation and Spawning in Pagrus major during Winter Season.

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抄録

A cholesterol-based pellet of luteinizing hormone-releasing hormone analogue (LHRH-a), des Gly10- [D-Ala6] LHRH ethylamide, was applicated to induce maturation and spawning in red sea bream. Pagrus major, during non-spawning season. November to December. In vitro release of the hormone from the pellet containing 50μg LHRH-a resulted in a peak at 28th day of 1.04μg /day, decreased rapidly at 35th day to 0.58μg/day, and after 49th day showed a relatively constant rate (0.2-0.35μg/day) for about two months. Single implantation of the pellet containing 100μg LHRH-a induced spawning in completely immature fish 17 days after the implantation, about six months prior to the natural spawning season. Fish implanted with 50μg LHRH-a cholesterol pellet showed gonadal development in both sexes. Histopathological findings of muscular tissues surrounding the implant showed no imflammatory response to a foreign body, suggesting a good biocompatibility of the pellet. These results suggest that LHRH-a cholesterol pellet used in this study is useful for a long-term hormone therapy to induce sexual maturation in fish which is required for a series of hormone injections.

収録刊行物

  • 水産増殖

    水産増殖 40 (2), 159-165, 1992

    日本水産増殖学会

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詳細情報 詳細情報について

  • CRID
    1390282679691872128
  • NII論文ID
    130003865298
  • NII書誌ID
    AN00124667
  • DOI
    10.11233/aquaculturesci1953.40.159
  • ISSN
    21850194
    03714217
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
    • Crossref
  • 抄録ライセンスフラグ
    使用不可

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