Presented at Evolution 2016

Included in heritability theme

Altmetric score 30.35 (top 3.5%)

Author: Amiyaal Ilany
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Research area: animal_behavior_and_cognition
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Social inheritance can explain the structure of animal social networks


Created on 19th October 2015

Amiyaal Ilany; Erol Akcay;


The social network structure of animal populations has major implications to survival, reproductive success, sexual selection, and pathogen transmission. But as of yet, no general theory of social network structure exists that can explain the diversity of social networks observed in nature, and serve as a null model for detecting species and population-specific factors. Here we propose a simple and generally applicable model of social network structure. We consider the emergence of network structure as a result of social inheritance, in which newborns are likely to bond with maternal contacts, and via forming bonds randomly. We compare model output to data from several species, showing that it can generate networks with properties such as those observed in real social systems. Our model demonstrates that important observed properties of social networks, including heritability of network position or assortative associations, can be understood as a consequence of social inheritance.

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