<< The researchers identified three behaviors related to establishing a hierarchy in H. saltator [Indian jumping ant "Harpegnathos saltator"] : biting, in which one ant bites another’s head, has a clear winner and loser, with the winner establishing dominance; policing, in which subordinate workers restrain challengers to a dominant individual; and dueling, in which two individuals engage in a martial display with their antennae, but which has no clear loser. >>
<< The researchers created a computer model that allowed them to manipulate all three behaviors in order to see how the behaviors affected the social structure of a colony. When biting was present, but policing and dueling were absent, the model resulted in a linear hierarchy. When biting and strong policing were present, the model resulted in a despotic hierarchy with a single dominant individual. It was only when biting, policing and winner-winner dueling were all present that the model resulted in a shared dominance hierarchy.>>
<< shared dominance hierarchies can be found in animal societies from lions to dolphins. (..) Higher cognition certainly plays a role in shaping the societies of many vertebrates, but we think the presence or absence of winner-winner behaviors may be an important factor in determining the nature of dominance hierarchies for a wide variety of species >>
'Winner-winner' behavior may shape animal hierarchies, study argues. April 14, 2016
Takao Sasaki, Clint A. Penick, et al. A Simple Behavioral Model Predicts the Emergence of Complex Animal Hierarchies. The American Naturalist, 2016; DOI: 10.1086/686259
F.on.T: un paper a risvolto poetico, questo ... sono 'aSSi, non e' vero?