Parallel evolution of pelvic-fin brooding as a complex adaptive trait in the family Adrianichthyidae

腹鳍育雏作为Adrianichthyidae家族复杂适应性特征的平行进化

• 批准号: 16F16392
• 负责人: 山平 寿智
• 金额: $ 1.47万
• 依托单位: University of the Ryukyus
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2016
• 资助国家: 日本
• 起止时间: 2016-11-07 至 2019-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16F16392/
• 关键词: Pelvic-fin Brooding; medaka; Sulawesi; QTL; 進化; 生態

The research objective of this project was satisfactorily achieved; both the phenotypic characterization and the identification of the genomic regions associated with pelvic-fin brooding in Sulawesi medaka were successfully achieved. Surprisingly, the results of this projects indicated that few loci might control pelvic fin brooding in Sulawesi medaka suggesting that this complex adaptation could evolve rapidly, and with few or no intermediary stages.Clear differences were found between the morphology and reproductive cycle of both species. O. eversi presented longer pelvic fins, a deeper concavity, and longer periods for “carrying-eggs” and “gonads-maturation” than O. dopingdopingensis; and as expected F2 hybrid individuals showed intermediary values in all of the evaluated variables.

本项目的研究目标得到了圆满的实现；苏拉威西青鳉鱼的表型特征和与腹鳍育雏相关的基因组区域的鉴定均已成功实现。令人惊讶的是，该项目的结果表明，很少有位点可以控制苏拉威西青鳉鱼的腹鳍育雏，这表明这种复杂的适应可以迅速进化，并且很少或没有中间阶段。两个物种的形态和繁殖周期之间发现了明显的差异。与 O. dopingdopingensis 相比，O.eversi 的腹鳍更长，凹度更深，“产卵”和“性腺成熟”的时间也更长。正如预期的那样，F2 杂交个体在所有评估变量中都显示出中间值。

项目成果

メダカの緯度クラインの研究：生活史から種分化へ

青鳉的纬向研究：从生活史到物种形成

• 发表时间: 2018
• 作者: Kiyotake H;Matsumoto H;N akayama S;Sakai M;Miyata ke T;Ryuda M;and Hayakawa Y;Maeda Takafumi;山平寿智
• 通讯作者: 山平寿智

Convergent evolution of body coloration in genus Oryzias and Nomorhamphus in Sulawesi-tenggara

苏拉威西登加拉省 Oryzias 属和 Nomorhamphus 体色的趋同进化

• 发表时间: 2017
• 作者: Montenegro J;Mochida K;Sugiuchi S;Matsui K;Fujimoto S;Mokodongan DF;Ishikawa A;Kitano J;Yong L;Mandagi IF;Masengi KWA;Hadiaty RK;Yamahira K
• 通讯作者: Yamahira K

Species and genetic diversity of medaka fishes (the family Adrianichthyidae) in Southeast Sulawesi

苏拉威西东南部青鳉鱼（Adrianichthyidae 科）的物种和遗传多样性

• 发表时间: 2017
• 作者: Yamahira K;Mokodongan DF;Lawelle SA;Masengi AKW
• 通讯作者: Masengi AKW

山平寿智研究室

山平久里实验室

世界のメダカ研究室

世界各地的青鳉研究实验室