没有证据表明亲属选择是对小丑海鱼社会群体形成的解释
Theresa Rueger1, Tina Adria Barbasch2, Matishalin Patel3
1Dove Marine Laboratory, School of Natural and Environmental Sciences, Newcastle University, King's Gate, Newcastle upon Tyne, NE1 7RU, United Kingdom.
概括
亲属选择并不能解释为什么小丑鱼育种者容忍非育种者. 社会群体内的相关性实际上为零,这表明其他进化因素在发挥作用.
科学领域:
- 进化生物学 进化生物学
- 行为生态学 行为生态学
- 社会进化社会进化
背景情况:
- 有生殖和非生殖个体的社会群体是共同的进化结果.
- 了解这些系统需要知道为什么非繁殖者仍然在繁殖上受到抑制,为什么繁殖者容忍它们.
- 虽然养殖者经常受益于非养殖者的帮助,但这些好处在某些脊椎动物社会中并不总是明显的.
研究的目的:
- 调查亲属选择在解释为什么养者容忍非养者中的作用,在小丑鱼 (Amphiprion percula).
- 为了测试种植者容忍非种植者的假设,因为他们的亲属关系和潜在的未来领土继承.
主要方法:
- 利用40个多态微卫星位置来分析遗传关系.
- 在203个社会群体中,评估了683个个体的小丑海鱼之间的配对关系.
- 在群体内,在育种者之间,以及在育种者与非育种者之间比较亲属关系.
主要成果:
- 在小丑海鱼群中,平均双对关系实际上为零.
- 群体内的亲属关系与同一珊瑚礁或更广泛的人群中的个人之间的亲属关系没有区别.
- 在育种者/育种者,育种者/非育种者,或非育种者/非育种者二合体之间没有发现相关性的显著差异.
结论:
- 亲属选择并不能解释小丑海鱼中非繁殖者的育种者耐受性.
- 替代假设,如世代内投注对冲或互惠互利介导的福利,需要进一步的研究来解释这种社会动态.
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