ダウンロード数: 884
タイトル: | Response of a neotenic goby, ice goby (Leucopsarion petersii), to thyroid hormone and thiourea treatments |
著者: | Harada, Yasuo Kinoshita, Izumi Kaneko, Toyoji Moriyama, Shunsuke Tanaka, Masaru Tagawa, Masatomo ![]() ![]() ![]() |
著者名の別形: | 田川, 正朋 |
キーワード: | ice goby (Leucopsarion petersii) neoteny thyroid hormone thiourea TSH |
発行日: | Jul-2003 |
出版者: | Zoological Society of Japan |
誌名: | Zoological Science |
巻: | 20 |
号: | 7 |
開始ページ: | 877 |
終了ページ: | 882 |
抄録: | In order to clarify the mechanisms of neoteny in the ice goby (Leucopsarion petersii), we examined effects of thyroid hormone and thiourea (TU) treatments on their neotenic characteristics and the pituitary-thyroid axis. Adult ice goby were exposed to 3, 5, 3'-triiodothyronine (T3, 0.1 ppm), TU (inhibitor of thyroid hormone synthesis, 30 ppm), or the combination of the two for 2 weeks. Observations of whole body T3 levels, thyroid follicles and TSH immunoreactive cells in the pituitary suggests the presence of a functioning thyroidal system. However, all of the neotenic features did not disappear in T3-treated fish, suggesting the absence of T3 responsiveness in peripheral tissues. These results indicate the similarity between neoteny of the ice goby and obligatory-type neoteny of urodeles. |
著作権等: | (c) 日本動物学会 / Zoological Society of Japan |
URI: | http://hdl.handle.net/2433/57205 |
DOI(出版社版): | 10.2108/zsj.20.877 |
出現コレクション: | Zoological Science |
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