In a collective foraging situation, we assessed the distribution of search responses of Wistar rats relative to the size of the group. For both, small and large groups, the number of production opportunities per capita was equal. Foraging strategies were classified as either production (opening gates with food) or scrounging (following conspecifics). Small groups showed a higher proportion of producers than large groups and required less time to deplete the food. The proportion of producing and scrounging responses yields to equilibrium between their payoffs. Producing and scrounging were highly correlated with different prior responses. Also, the relative frequency of producing and scrounging associated activities correlated with the time spent consuming food procured by each activity. It is possible that a simple outcome-strategy feedback mechanism mediates the choice of prior activities and procurement responses.

中文翻译：

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群体规模对 WISTAR 大鼠生产者-筛选策略的影响

在集体觅食的情况下，我们评估了 Wistar 大鼠相对于群体规模的搜索反应的分布。对于小型和大型团体，人均生产机会数量是相等的。觅食策略分为生产（用食物打开大门）或搜寻（跟随同种）。小群体的生产者比例高于大群体，消耗食物所需的时间更短。生产和搜寻反应的比例产生了它们的收益之间的均衡。生产和搜寻与不同的先前反应高度相关。此外，生产和搜寻相关活动的相对频率与消费每项活动采购的食物所花费的时间相关。