Strategy selection under predation; evolutionary analysis of the emergence of cohesive aggregations

Research output: Contribution to journalArticle

Author(s)

Department/unit(s)

Publication details

JournalJournal of theoretical biology
DatePublished - 21 Jun 2010
Issue number4
Volume264
Number of pages9
Pages (from-to)1102-1110
Original languageEnglish

Abstract

Why do animals form groups? This question has formed the basis of numerous scientific studies over the last hundred years and still remains a controversial topic Predation is one of the foremost candidates, yet the precise mechanism remains quantitatively elusive Here I investigate in saw the effect of ongoing predation on groups of heterogeneous individuals behaving according to a well-documented individual based model I examine the resultant evolutionary trajectories and describe the final selected states and their stability with reference to a qualitatively modified version of adaptive dynamics. The speed of individuals is found to dominate the selection of the final state over other parameters in the model. The relative stability of the groups and their internal configurations are discussed with reference to novel structural correlation functions that are defined and Introduced The results reveal the importance of tightly bound toroidal group structures as an intermediate state prior to the emergence of slow compact groups The study also indicates the need to more accurately model the speed distributions in real aggregations (C) 2010 Elsevier Ltd. All rights reserved.

    Research areas

  • Flocking, Evolution, Genetic algorithms, Predation, Adaptive dynamics, FISH SCHOOLS, HUNTING BEHAVIOR, ANIMAL GROUPS, SELFISH HERD, PREY, PATTERN, ATTACK

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations