在社会昆虫中,无关联的助手是社会昆虫
D C Queller1, F Zacchi, R Cervo
1Department of Ecology and Evolution, Rice University, Houston, Texas 22251-1892, USA. queller@rice.edu
Nature
|June 24, 2000
概括
在黄蜂Polistes dominulus中,许多友是无关的,这挑战了亲属选择理论. 这种独特的社会制度为下属提供了未来繁殖的机会,类似于一些脊椎动物社会.
科学领域:
- 行为生态学 行为生态学
- 进化生物学 进化生物学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 亲属选择理论解释了社会昆虫的利他主义行为,假设助手与繁殖相关.
- 以前对脊椎动物交配系统的研究已经从遗传标记中获益浅,但在社会昆虫中类似的进展是有限的.
研究的目的:
- 通过使用高分辨率遗传标记来研究社会黄蜂Polistes dominulus的亲属结构和社会系统.
- 了解社会昆虫中非亲属帮助行为的进化含义.
主要方法:
- 利用微卫星标记器来分析Polistes dominulus中的创始母巢伙伴之间的遗传关系.
- 将P.dominulus的社会结构与已建立的亲属选择模型和其他社会昆虫系统进行比较.
主要成果:
- 揭示了Polistes dominulus中35%的创始母巢对象是无关的,这是该物种前所未有的发现.
- 观察到一个个体表现出几乎完全的生殖优势在无关下属.
- 确定了下属的主要好处是未来繁殖的潜力,特别是女王死亡率.
结论:
- 在社会昆虫中,Polistes dominulus的社会系统是独一无二的,因为在巢合者之间存在很大程度的不相关性.
- 这个系统挑战了传统的亲属选择模型,并显示了与某些脊椎动物社会的功能相似之处,非亲属助手获得间接利益.
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