著者

隆島 史夫 日比谷 京 ファンバン ガン 会田 勝美

出版者

日本水産學會

雑誌

日本水産学会誌 (ISSN:00215392)

巻号頁・発行日

vol.38, no.1, pp.43-49, 1972

被引用文献数

35

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In order to clarify the endocrine control over the egg yolk formation, the effects of estrogenic substance (diethylstilbestrol), androgenic substance (methyltestosterone), thyroid hormone (powdered mammalian thyroid gland), and adrenocorticotropin on plasma lipid and lipoprotein in rainbow trout were examined. Levels of total lipid and lipoprotein in plasma were raised by estrogen treatment. The liver of estrogen-treated fish was hypertrophic, and contained more lipid, protein and nucleic acids. It is concluded that the lipoporotein is synthesized in liver and released into the blood under the influence of ovarian steroid hormone. On the contrary, the levels of lipid and lipoprotein were reduced by thyroid powder administration. From these results it is suspected that an endocrine correlation mechanism affects the metabolism of lipoproteins that are deposited in the oocytes.