Spread of Social Information and Dynamics of Social Transmission within Drosophila Groups
Spread of Social Information and Dynamics of Social Transmission within Drosophila Groups
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DOI：
10.1016/j.cub.2011.12.050
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发表时间：
2012-02-21
期刊：
影响因子：
9.2
通讯作者：
Mery, Frederic
中科院分区：
文献类型：
--
作者：
Battesti, Marine;Moreno, Celine;Mery, Frederic
了解行为多样性是如何产生和维持的是进化生物学的核心。基于遗传的遗传一直是上个世纪的主要研究焦点;然而，非遗传遗传，如社会传播，已成为越来越感兴趣的话题[1]。社会信息如何影响行为取决于直接通过个人经验收集的信息与通过社会互动收集的信息之间的平衡，以及这些信息在群体中的传播[2，3]。我们研究了雌性黑腹果蝇在自然条件下如何使用社会信息，以及这些信息是否可以在群体中传播和维持，这是建立行为传递的先决条件[4]。我们发现，产卵地点的选择是严重影响以前的社会互动。天真的观察者苍蝇发展的偏好相同的产卵介质经验丰富的示范苍蝇条件，以避免两个同样有益的媒体之一。令人惊讶的是，产卵地点的偏好是社会传播的示威者的观察员，即使他们在笼子里的互动，只有无味的，纯琼脂培养基，甚至当观察员苍蝇有以前的个人经验，这两个奖励媒体。我们的研究结果揭示了群体内的社会信息的扩散过程，其维护，并最终在行为的本地适应的根源。
Understanding how behavioral diversity arises and is maintained is central to evolutionary biology. Genetically based inheritance has been a predominant research focus of the last century; however, nongenetic inheritance, such as social transmission, has become a topic of increasing interest [1]. How social information impacts behavior depends on the balance between information gathered directly through personal experience versus that gleaned through social interactions and on the diffusion of this information within groups [2, 3]. We investigate how female Drosophila melanogaster use social information under seminatural conditions and whether this information can spread and be maintained within a group, a prerequisite for establishing behavioral transmission [4]. We show that oviposition site choice is heavily influenced by previous social interactions. Naive observer flies develop a preference for the same egg-laying medium as experienced demonstrator flies conditioned to avoid one of two equally rewarding media. Surprisingly, oviposition site preference was socially transmitted from demonstrators to observers even when they interacted in a cage with only unflavored, pure agar medium, and even when the observer flies had previous personal experience with both rewarding media. Our findings shed light on the diffusion process of social information within groups, on its maintenance, and ultimately, on the roots of behavioral local adaptation.