国立研究開発法人 国際農林水産業研究センター | JIRCAS

The Role of Thyroid Hormone in Fish Development with Reference to Aquaculture

JARQ : Japan Agricultural Research Quarterly
ISSN
00213551
書誌レコードID(総合目録DB)
AA0068709X
本文フルテキスト

Recent progress in an understanding of the role of thyroid hormone (TH) on fish development was reviewed with particular reference to fish farming. TH is a small liposoluble hormone produced in thyroid follicles and has two bioactive forms, tetraiodothyronine (thyroxine, T4) and triiodothyronine (T3). Mother fish deposits a considerable amount of TH in developing oocytes. The amount of TH and ratio of T3 to T4 in eggs vary among species and stocks of the same species. The role of TH in eggs is not yet clear, though enhanced survival and growth of embryos and larvae by the enrichment of the eggs with TH have been reported in some cases. On the other hand, the role of TH that promotes larva-juvenile transition or metamorphosis has been established in teleost fish. The level of TH elevates at the onset of metamorphosis, and the treatment with TH can induce precocious metamorphosis. Considering the TH role in fish development, the disorder of its proper function could lead to deformity in juveniles, which is frequently observed in hatchery. In addition, many environmental chemicals have potential disrupting TH function in developing embryos and juveniles of fish.

刊行年月2005-07-01
作成者YAMANO Keisuke
著者キーワード

egg

environmental disruptor

deformity

metamorphosis

公開者Japan International Research Center for Agricultural Sciences
データ作成日2005-07-01
国立情報学研究所メタデータ主題語彙集(資源タイプ)Journal Article
39
3
開始ページ161
終了ページ168
DOI10.6090/jarq.39.161
権利Japan International Research Center for Agricultural Sciences
言語eng