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The integrated role of resource memory and scent-mediated territoriality in the emergence of home-ranges

Theng, M.; Prowse, T. A.; Cassey, P.; Delean, S.; Bracis, C.

2021-07-14 ecology
10.1101/2021.05.07.443202 bioRxiv
Show abstract

Despite decades of animal movement research, an integrated understanding of the processes underlying the emergence of home-ranges remains inadequate. We explored the effects of integrating two key processes of home-ranging arising from individual movement decisions: (i) memory-based resource use; and (ii) scent-based territoriality. Both mechanisms together led to the formation of exclusive, resource- and population density-dependent home-ranges, which were responsive to perturbations in the conspecific environment (i.e., removing individuals). Home-range patterns (size, size skewness and overlap) were primarily influenced by memory and scent decay rate parameters, demonstrating that home-ranging is ultimately a balance between an animals inherent exploratory tendency and its desire to avoid conspecifics. Model application to a population of feral cats demonstrated that general space use patterns could be approximated through simulation, and replication of finer-scale space use patterns is plausible with further model development. Our modelling framework provides a foundation for sophisticated theoretical models of space use in interacting animals.

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