マダイ雄の性成熟に伴う血中ステロイドホルモン量の変動

DOI 日本農学文献記事索引 Web Site 被引用文献5件

書誌事項

タイトル別名
  • Changes in plasma levels of steroid hormones during sexual maturation of male red seabream Pagrus major.
  • マダイ オス ノ セイ セイジュク ニ トモナウ ケッチュウ ステロイド ホル

この論文をさがす

抄録

Changes of plasma testosterone, 11-ketotestosterone and 17, 20β-dihydroxy-4-pregnen-3-one (17α, 20β-diOHprog) levels were correlated with changes in gonadosomatic index (GSI) and testi-cular histology during the sexual maturation of male red seabream Pagrus major.<br>A sharp increase in the GSI occurred during April, with the increased formation of sperma-tozoa. High GSI values were maintained in May, followed by a sharp drop in June. The values were consistenily low during the remainder of the sampling periods. Plasma testosterone levels were maintained at low levels (below 200pg/ml) from January to March, rapidly increased to 500pg/ml in April and reached a peak of 870pg/ml in May. The levels showed a distinct drop in June, and remained low throughout the remainder of the sampling periods. The profiles and absolute levels of plasma 11-ketotestosterone were almost similar to those of testosterone. 17α, 20β-diOHprog could be detected in plasma throughout the sampling periods, but the levels (about 200pg/ml) were much lower than those of salmonids. There was a slight but significant increase in l7α, 20β-diOHprog levels (350pg/ml) in males collected during early spermiating period (April). However, the levels decreased even during the period of active spermiation (May).

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 54 (4), 593-598, 1988

    公益社団法人 日本水産学会

被引用文献 (5)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ