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首页> 外文期刊>Ethology >A Novel Method of Assessing Dominance Hierarchies Shows Nuance, Linearity and Stability in the Dinosaur Ant Dinoponera quadriceps
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A Novel Method of Assessing Dominance Hierarchies Shows Nuance, Linearity and Stability in the Dinosaur Ant Dinoponera quadriceps

机译：一种新的评估优势等级的方法显示了恐龙蚂蚁Dinoponera quadriceps的细微差别，线性和稳定性

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Many social species with relatively simple societies have dominance hierarchies of individuals, with dominant individuals achieving fitness and subordinate individuals either queuing to obtain fitness or achieving only indirect fitness by helping relatives. Assessing the dominance hierarchy in a social group is generally based upon observing dyadic interactions as and when they occur spontaneously within the whole-group setting. However, this method can be very time-consuming because many dyads interact only very rarely, necessitating either extremely long observation periods or many dyadic relationships being unresolved. Here, we report an alternative method using the queenless dinosaur ant Dinoponera quadriceps, which lives in colonies containing tens of individuals. We removed all individuals from their nest and observed the dominance behaviours expressed in isolated dyadic interactions for every pairwise combination of individuals. Individuals showed a classic dominance behaviour in this setting, and the rapid nature of the assay allowed us to observe every dyadic relationship on a weekly basis over 4 weeks. The dominance hierarchies based on these isolated dyadic interactions correlated well with those produced by the conventional method of colony observations. They showed the hierarchies to be highly linear and stable, and also revealed that dominance relationships may extend further down the hierarchy than previously thought. Although highly manipulative, the isolated dyadic interaction method works well and will likely make more feasible the study of other social species in which pairs of individuals can be isolated together
机译：具有相对简单社会的许多社会物种具有个人的支配等级，优势个人实现适应能力，而下属个人通过排队获得适应能力或通过帮助亲属而仅获得间接适应能力。评估社会群体中的主导地位等级通常是基于观察在整个群体环境中自发发生的二元互动。但是，此方法可能非常耗时，因为许多二元组很少交互，因此需要非常长的观察期或许多二元关系无法解决。在这里，我们报告了另一种使用无女王恐龙蚂蚁四头肌的替代方法，该恐龙生活在包含数十个个体的殖民地中。我们将所有个体从巢中移出，并观察到每个成对组合的个体在孤立的二元互动中所表现出的主导行为。在这种情况下，个人表现出典型的主导行为，而该分析的快速性质使我们能够在4周内每周观察一次每一个二元关系。基于这些孤立的二元相互作用的优势等级与通过殖民地观察的常规方法产生的优势等级紧密相关。他们表明层次结构是高度线性和稳定的，并且还揭示了优势关系可能比以前认为的更进一步向下延伸。尽管极富操纵性，但孤立的二元互动方法行之有效，并且可能使研究可以将个体对分离的其他社会物种更可行。

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