Tendency-distance models of social cohesion in animal groups

Warburton, Kevin and Lazarus, John (1991) Tendency-distance models of social cohesion in animal groups. Journal of Theoretical Biology, 150 4: 473-488. doi:10.1016/S0022-5193(05)80441-2


Author Warburton, Kevin
Lazarus, John
Title Tendency-distance models of social cohesion in animal groups
Journal name Journal of Theoretical Biology   Check publisher's open access policy
ISSN 1095-8541
0022-5193
Publication date 1991-06-21
Sub-type Article (original research)
DOI 10.1016/S0022-5193(05)80441-2
Open Access Status Not yet assessed
Volume 150
Issue 4
Start page 473
End page 488
Total pages 16
Language eng
Subject 2613 Statistics and Probability
2700 Medicine
2611 Modelling and Simulation
2400 Immunology and Microbiology
1300 Biochemistry, Genetics and Molecular Biology
1100 Agricultural and Biological Sciences
2604 Applied Mathematics
Abstract Although it has been assumed that attraction and repulsion between social individuals constitute a basis for group cohesion, there has been no systematic study of the possible ways in which these tendencies might vary with inter-individual distance (IID), or of associated implications for group structure. In this paper, a family of attraction/repulsion-distance functions is described. Computer simulation was used to examine the effects of each function on group cohesion, as reflected by mean values and variability in IID and group shape. Our results showed that: (a) all models led to stability in group structure, but differed significantly in terms of stable IID and group shape characteristics; (b) cohesion was best served by an upwardly convex behaviour-distance function in which maximum attraction equalled maximum repulsion (and the biological plausibility of this function is discussed); (c) group elongation and variability in mean IID were significantly positively correlated; (d) although dyads maintained an equilibrial separation distance, at which attraction balanced repulsion, in larger groups stable nearest neighbour distances were often less than the equilibrium distance; and (e) individuals needed to monitor and respond to only relatively few of their companions in order to avoid group fragmentation.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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Created: Fri, 29 Dec 2017, 06:25:37 EST