Comparative studies on reproductive cycle of reef fishes : approach from environmental changes in tropical waters

珊瑚礁鱼类繁殖周期的比较研究：热带水域环境变化的途径

• 批准号: 19405031
• 负责人: TAKEMURA Akihiro
• 金额: $ 8.57万
• 依托单位: University of the Ryukyus
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19405031/
• 关键词: サンゴ礁; アイゴ; 熱帯; 年周期; 環境; アィゴ; 産卵; 組織学

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.

本研究的目的是阐明适应热带季风环境的鱼类如何重复其年度生殖周期。生活在印度尼西亚珊瑚礁的橙斑刺足类在雨季和旱季之间开始性腺成熟。珊瑚礁初级生产力的年度变化与性腺成熟的变化大致相关，这表明除了光周期和温度之外，营养条件在该鱼类生殖活动的启动中也发挥着作用。根据模拟季风环境的实验条件，下丘脑中表达的几个光和营养相关基因发生了变化。这些基因可能参与了水生环境的变化，并激活了生殖内分泌轴的高级部分。

项目成果

魚類の網膜におけるメラトニン合成酵素遺伝子発現の日周性と光応答能.

鱼视网膜褪黑激素合酶基因表达的昼夜节律和光反应性。

• 发表时间: 2007
• 作者: Bapary;M. A. J.;朴龍柱・竹内悠希・竹村明洋;柏木朋美・竹村明洋・朴龍柱・朴智権・金世宰・三輪哲也・林純子・山本啓之
• 通讯作者: 柏木朋美・竹村明洋・朴龍柱・朴智権・金世宰・三輪哲也・林純子・山本啓之

Daily and monthly variations in melatonin receptors of a reef fish with lunar-synchronized periodicity.

珊瑚鱼褪黑激素受体的每日和每月变化具有与月球同步的周期性。

• 发表时间: 2007
• 作者: Park YJ;Park JG;Takeuchi Y;Kim SJ;Takemura A
• 通讯作者: Takemura A

リズム生態学

节律生态学

• 发表时间: 2008
• 作者: 細谷隆史;河本晴雄;坂志朗;竹村明洋
• 通讯作者: 竹村明洋

サンゴ礁の不思議な共生関係

珊瑚礁神秘的共生关系

• 发表时间: 2010
• 作者: Bapary;M.A.J.;竹内悠記;江阪有里子;竹村明洋
• 通讯作者: 竹村明洋

Influence of the Kuroshio current on the population genetic structure of golden rabbitfish, Siganus guttatus

黑潮对金兔鱼种群遗传结构的影响

• 发表时间: 2009
• 作者: Iwamoto;K.
• 通讯作者: K.