Gregarious arthropods are able to perform collective decision-making when having different options. In this study, we investigate how the sexual group composition and the geometry of the shelters influence the aggregation patterns of Periplaneta americana. We show that groups of males, groups of females and mixed groups composed of males and females have different interactions’ networks leading to different collective preferences in symmetrical (two horizontal or two vertical shelters) and asymmetrical (one vertical and one horizontal shelter) conditions that take their origin in the differences in the strengths of interattractions and in individual geotaxis preferences.

中文翻译：

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性群体构成和庇护所几何形状影响集体决策：美洲大蠊案例

当有不同的选择时，群居节肢动物能够进行集体决策。在这项研究中，我们调查了性群体的组成和庇护所的几何形状如何影响美洲大蠊的聚集模式。我们表明，男性群体、女性群体和由男性和女性组成的混合群体具有不同的互动网络，导致在对称（两个水平或两个垂直庇护所）和不对称（一个垂直和一个水平庇护所）条件下的不同集体偏好。它们的起源在于吸引力的强度和个人趋地性偏好的差异。