Social evolution: Kin preference in a social microbe
Social evolution: Kin preference in a social microbe
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社会进化：社会微生物中的亲缘偏好
作者：
N. J. Mehdiabadi;C. N. Jack;T. T. Farnham;Thomas G. Platt;Sara E. Kalla;G. Shaulsky;D. Queller;J. Strassmann
亲属识别有助于许多动物的合作进化，但不确定微生物是否也能利用它来关注亲属的利他行为。在这里，我们展示了社会性变形虫Dictyostelium purpureum更喜欢在一些个体死亡以帮助其他个体的情况下与自己的亲属组成群体。通过将利他行为导向亲属，紫萼龙葵通常可以避免相关的盘状龙葵经历嵌合的代价。
Kin recognition helps cooperation to evolve in many animals, but it is uncertain whether microorganisms can also use it to focus altruistic behaviour on relatives. Here we show that the social amoeba Dictyostelium purpureum prefers to form groups with its own kin in situations where some individuals die to assist others. By directing altruism towards kin, D. purpureum should generally avoid the costs of chimaerism experienced by the related D. discoideum.