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Using the Ornstein-Uhlenbeck process to model the evolution of interacting populations
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen.ORCID-id: 0000-0002-5816-4345
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Växtekologi och evolution. CNRS Univ Montpellier IRD EPHE, UMR ISEM 5554, Montpellier, France..
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen.ORCID-id: 0000-0002-7672-190X
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Växtekologi och evolution.
2017 (engelsk)Inngår i: Journal of Theoretical Biology, ISSN 0022-5193, E-ISSN 1095-8541, Vol. 429, s. 35-45Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The Ornstein-Uhlenbeck (OU) process plays a major role in the analysis of the evolution of phenotypic traits along phylogenies. The standard OU process includes random perturbations and stabilizing selection and assumes that species evolve independently. However, evolving species may interact through various ecological process and also exchange genes especially in plants. This is particularly true if we want to study phenotypic evolution among diverging populations within species. In this work we present a straightforward statistical approach with analytical solutions that allows for the inclusion of adaptation and migration in a common phylogenetic framework, which can also be useful for studying local adaptation among populations within the same species. We furthermore present a detailed simulation study that clearly indicates the adverse effects of ignoring migration. Similarity between species due to migration could be misinterpreted as very strong convergent evolution without proper correction for these additional dependencies. Finally, we show that our model can be interpreted in terms of ecological interactions between species, providing a general framework for the evolution of traits between "interacting" species or populations.

sted, utgiver, år, opplag, sider
2017. Vol. 429, s. 35-45
Emneord [en]
Migration, Ornstein-Uhlenbeck process, Phylogenetic comparative methods, Species interactions, Trait evolution
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Identifikatorer
URN: urn:nbn:se:uu:diva-333740DOI: 10.1016/j.jtbi.2017.06.011ISI: 000407873100003PubMedID: 28619246OAI: oai:DiVA.org:uu-333740DiVA, id: diva2:1157823
Tilgjengelig fra: 2017-11-16 Laget: 2017-11-16 Sist oppdatert: 2018-05-31bibliografisk kontrollert

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