HOME    About this site    mypage    Japanese    library    university    Feedback

University of the Ryukyus Repository >
Faculty of Science >
Research Report (Faculty of Science) >

Title :熱帯サンゴ礁環境変化から読み解く魚類の測季システム
Title alternative :Comparative studies on reproductive cycle of reef fishes: approach from environmental changes in tropical waters
Authors :竹村, 明洋
Authors alternative :Takemura, Akihiro
Issue Date :10-May-2010
Abstract :2007年度~2009年度科学研究費補助金(基盤研究(B))研究成果報告書
研究概要(英文) : The aim of the present study was to clarify how fish adapted to tropical monsoon environments repeat their annual reproductive cycle. The orange-spotted spinefoot inhabit coral reefs in Indonesia started their gonadal maturation between rainy and dry season. Annual change in primary production in the coral reefs was roughly correlated with that in gonadal maturation, suggesting that in addition to photoperiod and temperature, nutritive condition play a role in initiation of reproductive activity in this fish species. Several light- and nutrition-related genes expressed in the hypothalamus changed according to experimental conditions that mimicked monsoon environments. It was suggested that these genes transduce changes in aquatic environments and activate the higher parts of the reproductive endocrine axis.
Type Local :研究報告書
Publisher :竹村明洋
URI :http://hdl.handle.net/20.500.12000/17768
Appears in Collections:Research Report (Faculty of Science)

Files in This Item:

File Description SizeFormat
19405031seika.pdf429KbAdobe PDFView/Open