亚马逊人回来了:乌拉圭萨凡纳斯的祈祷中没有男性
Mariana C Trillo1,2,3, Anita Aisenberg4, Mariella E Herberstein5
1Depto de Ecología y Biología Evolutiva, Instituto de Investigaciones Biológicas Clemente Estable (IIBCE), Montevideo, Uruguay. mariana.c.trillo@gmail.com.
Neotropical entomology
|February 2, 2024
概括
乌拉圭丰富的祈祷神物种Brunneria subaptera仅由雌性组成,这表明通过thelytokous parthenogenesis进行繁殖. 这一发现突显了南美草原昆虫独特的繁殖策略.
科学领域:
- 昆虫学 昆虫学是一门学科.
- 进化生物学 进化生物学
- 遗传学 遗传学 是一个
背景情况:
- 布鲁内里亚 (Brunneria subaptera) 是乌拉圭最常见的祈祷神灵,主要在草原中发现.
- 之前的采集表明乌拉圭人口中可能没有雄性.
- 这项研究研究了乌拉圭B. subaptera的繁殖策略.
研究的目的:
- 为了确定乌拉圭的B. subaptera种群是否完全是雌性.
- 分析物种内部的遗传变异.
- 为了估计最近的共同祖先的时间.
主要方法:
- 在乌拉圭的两个地方,在一年内每两个月进行一次采样.
- 所有收集的个体都被性化了.
- 从成年女性中提取DNA并对线粒体的cox1基因进行了测序.
- 评估遗传多样性和估计的多样化时间.
主要成果:
- 在乌拉圭地区的样本中没有发现B. subaptera的雄性个体.
- 基因分析显示,来自乌拉圭不同地区的个体之间没有差异.
- 年龄估计表明该物种的起源是最近的,大约233万年前.
结论:
- 缺少雄性强烈表明,B. subaptera通过乌拉圭的telytokous parthenogenesis进行繁殖.
- 这一发现为研究南美祈祷神灵的繁殖策略和多态性开辟了道路.
- 对于这个独特昆虫的息地南美草原,迫切需要采取保护措施.
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