Latitudinal gradient in sexual selection pressure in the medaka
青鳉性选择压力的纬度梯度
基本信息
- 批准号:20570019
- 负责人:
- 金额:$ 3.08万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2008
- 资助国家:日本
- 起止时间:2008 至 2010
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It has been reported that lower-latitude males have more conspicuous secondary sex characteristics in the medaka Oryzias latipes. Laboratory breeding experiments revealed that low-latitude males have higher fin elongation rates but grow slowly, suggesting that the conspicuous secondary sex characteristics are achieved at the expense of fast growth. It was also revealed that low-latitude females tend not to accept males' courtships, indicating that they are more choosy. Probably, these characteristics have been evolved by strong sexual selection due to long breeding seasons at low latitudes.
据报道,低纬度的雄性在青冈稻中具有更明显的第二性特征。实验室繁育实验表明,低纬度雄性具有较高的鳍伸长率,但生长缓慢,这表明显著的第二性特征是以快速生长为代价的。研究还显示,低纬度地区的女性倾向于不接受男性的求爱,这表明她们更挑剔。这些特征可能是由于低纬度地区漫长的繁殖季节而产生的强烈的性选择所致。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
メダカにおける求愛行動および配偶者選好性の緯度間変異
青鳉鱼求偶行为和交配偏好的纬度差异
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Lo N.;Hayashi Y.;Kitade O.;中田兼介;松田裕之;佐々木健・山平寿智
- 通讯作者:佐々木健・山平寿智
Heterochronic differences in fin development between latitudinal populations of the medaka Oryzias latipes (Actinopterygii: Adrianichthyidae)
- DOI:10.1111/j.1095-8312.2009.01233.x
- 发表时间:2009-07-01
- 期刊:
- 影响因子:1.9
- 作者:Kawajiri, Maiko;Kokita, Tomoyuki;Yamahira, Kazunori
- 通讯作者:Yamahira, Kazunori
Latitudinal variation in axial patterning of the medaka(Actinopterygii : Adrianichthyidae) : Jordan' s rule is substantiated by genetic variation in abdominal vertebral numbe
青鳉(Actinopterygii: Adrianichthyidae)轴向模式的纬度变异:腹部椎骨数量的遗传变异证实了约旦规则
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Yamahira K;Nishida T
- 通讯作者:Nishida T
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YAMAHIRA Kazunori其他文献
YAMAHIRA Kazunori的其他文献
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{{ truncateString('YAMAHIRA Kazunori', 18)}}的其他基金
Studies on sex-chromosome turnover and evolution of secondary sexual characteristics in the family Adrianichthyidae
鱼科性染色体更替及第二性征演化研究
- 批准号:
26291093 - 财政年份:2014
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Latitudinal gradient in sexual selection pressure and reproductive isolation in the genus Oryzias
稻属性选择压力和生殖隔离的纬度梯度
- 批准号:
23570031 - 财政年份:2011
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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