Conspecific attraction and shelter selection in gregarious insects
Conspecific attraction and shelter selection in gregarious insects
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DOI：
10.1086/518570
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发表时间：
2007-07-01
影响因子：
2.9
通讯作者：
Deneubourg, Jean-Louis
中科院分区：
文献类型：
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作者：
Jeanson, Raphael;Deneubourg, Jean-Louis
在生境选择过程中，同种物种的存在往往会导致动物在同等质量的生境中分布不均匀。在群居物种中，个体的亚群体可能表现出相互吸引，但对环境资源的偏好不同。最终的定居决定需要个体综合考虑环境和社会因素。这就提出了社会性和资源偏好在决定生境选择方面的相对重要性的问题。在本研究中，我们考察了同种吸引对个体资源偏好对蟑螂群体避难选择的交互影响。庇护所按雌雄若虫和成年雄性的大小被提供给只有雌雄若虫的群体和混合群体。男性的选择在不同的社会条件下是一致的。相反，若虫的偏好会随着社会环境的变化而变化；雄性的存在压倒了若虫对按比例大小的庇护所的亲和力。我们开发了一个数值模型，实现了从这些实验中得到的参数，以测试个体的最终空间分布是否源于雌雄雌雄之间的吸引力差异，这与它们的相对体型有关。最后，我们提出了一个理解相似机制如何促进生物在不同空间尺度上的倾斜分布的一般框架。
During habitat selection, the presence of conspecifics can frequently drive a nonuniform distribution of animals across habitats of equivalent quality. In group- living species, subgroups of individuals might display mutual attraction while differing in their preferences for environmental resources. The final decision to settle requires individuals to integrate both environmental and social cues. This raises the question of the relative importance of sociality and resources preferences in determining habitat choice. In this study, we examined the interactive influence of conspecific attraction on individual resource preferences on refuge choice in groups of cockroaches. Shelters scaled to the sizes of nymphs and adult males were offered to groups of only nymphs and only males and to mixed groups. The choices of males were consistent across social conditions. Conversely, the preferences of nymphs shifted depending on the social context; the presence of males overrode the affinity nymphs had for scaled- size shelters. We developed a numerical model implementing parameters derived from these experiments to test whether the final spatial distribution of individuals originated from a differential attraction between nymphs and males that was associated with their relative body size. Finally, we propose a general framework for understanding how similar mechanisms can promote the skewed distribution of organisms at different spatial scales.