寄生虫女王重新开始单独交配.
Seirian Sumner1, William O H Hughes, Jes S Pedersen
1Biological Institute, Department of Population Biology, University of Copenhagen, 2100 Copenhagen, Denmark.
Nature
|March 6, 2004
概括
多阴性,或多重交配,在昆虫中很常见. 然而,社会寄生虫显示出令人惊的反向单一交配,这表明多性成本是自由生活物种的特征.
科学领域:
- 进化生物学是进化的生物学.
- 行为生态学 行为生态学
- 昆虫的社交性 昆虫的社交性
背景情况:
- 多重交配 (多体) 在昆虫中很普遍,但其进化驱动因素和维护因素仍然难以量化.
- 将与不同生活方式密切相关的物种进行比较,可以阐明多夫制的成本和益处.
研究的目的:
- 研究剪叶 (Acromyrmex echinatior) 和它的社会寄生虫 (Acromyrmex insinuator) 的交配策略.
- 通过比较一个自由生活的物种与它的社会寄生虫亲属来了解影响的多性恋的进化压力.
主要方法:
- 对Acromyrmex echinatior和Acromyrmex insinuator之间的交配行为进行比较分析.
- 在宿主和寄生物种中观察和记录交配频率.
主要成果:
- 阿克罗米尔麦克斯 (Acromyrmex echinatior) 的女王表现出多方性,与多达十几个雄性交配.
- 作为社会寄生虫的Acromyrmex暗示女王,只能单独进行单一交配.
- 在社会寄生虫中观察到,社会寄生虫从多夫制迅速转变为单一交配.
结论:
- 与多妻制相关的成本似乎是自由生活的生态战略的特点.
- 社会寄生主义会导致交配行为的快速进化变化,例如抛弃多夫制.
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