交配失败是由于种子虫Lygaeus simulans中神秘的男性选择引起的吗?
Vicki L Balfour1, Mélissa Armand1,2, David M Shuker1
1School of Biology University of St Andrews St Andrews UK.
Ecology and evolution
|September 19, 2024
概括
种子虫的交配失败是常见的,雄性可能选择不对雌性进行授精. 这种神秘的男性选择,受雌性大小和交配时间的影响,解释了Lygaeus simulans的生殖失败.
科学领域:
- 进化生物学是进化的生物学.
- 性选择性选择性选择
- 行为生态学 行为生态学
背景情况:
- 结合失败,即个体尽管发生交配,但不能繁殖,在自然界中是常见的.
- 了解交配失败的原因对于交配系统进化至关重要.
- 阴道后的性选择可能在生殖成功中起作用.
研究的目的:
- 为了调查Lygaeus simulans种子虫的高交配失败率的原因.
- 为了测试神秘的男性选择导致交配失败的假设.
- 探索男性和女性特征对交配成功的影响.
主要方法:
- 对Lygaeus simulans的实验涉及受控的交配和伴侣相互作用.
- 对交配失败率的分析与雌性大小,雄性大小和交配时间的关系.
- 评估了长时间 (从几个小时到几天) 的重复性伴侣互动.
主要成果:
- 交配失败与雌性体型有关,较小的雌性经历了更高的失败率.
- 与较小的雌性交配时间较短,与交配失败相关.
- 长时间的交互时间减少了交配失败率,这表明这不是由于不育.
结论:
- 结果强烈支持神秘的男性选择作为Lygaeus simulans交配失败的主要原因.
- 男性的选择受女性体型和交配动态的影响,决定了生殖结果.
- 交配失败并不是由于该物种的慢性不孕或机械问题造成的.
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