Novel pathogen introduction triggers rapid evolution in animal social movement strategies
Author:
Gupte Pratik Rajan1ORCID,
Albery Gregory F23,
Gismann Jakob1ORCID,
Sweeny Amy4,
Weissing Franz J1
Affiliation:
1. Groningen Institute for Evolutionary Life Sciences, University of Groningen
2. Georgetown University
3. Wissenschaftskolleg zu Berlin
4. Institute of Evolutionary Biology, University of Edinburgh
Abstract
Animal sociality emerges from individual decisions on how to balance the costs and benefits of being sociable. Novel pathogens introduced into wildlife populations should increase the costs of sociality, selecting against gregariousness. Using an individual-based model that captures essential features of pathogen transmission among social hosts, we show how novel pathogen introduction provokes the rapid evolutionary emergence and coexistence of distinct social movement strategies. These strategies differ in how they trade the benefits of social information against the risk of infection. Overall, pathogen-risk-adapted populations move more and have fewer associations with other individuals than their pathogen-risk-naive ancestors, reducing disease spread. Host evolution to be less social can be sufficient to cause a pathogen to be eliminated from a population, which is followed by a rapid recovery in social tendency. Our conceptual model is broadly applicable to a wide range of potential host–pathogen introductions and offers initial predictions for the eco-evolutionary consequences of wildlife pathogen spillover scenarios and a template for the development of theory in the ecology and evolution of animals’ movement decisions.
Funder
European Research Council
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Wissenschaftskolleg zu Berlin
National Science Foundation
Publisher
eLife Sciences Publications, Ltd
Subject
General Immunology and Microbiology,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience
Cited by
1 articles.
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