Models for Eco-Evolutionary Extinction Vortices under Balancing Selection

Nabutanyi P, Wittmann M (2021)
The American Naturalist: 000-000.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Abstract / Bemerkung
The smaller a population is, the faster it loses genetic diversity as a result of genetic drift. Loss of genetic diversity can reduce population growth rate, making populations even smaller and more vulnerable to loss of genetic diversity. Ultimately, the population can be driven to extinction by this “eco-evolutionary extinction vortex.” While there are already quantitative models for extinction vortices resulting from inbreeding depression and mutation accumulation, to date extinction vortices resulting from loss of genetic diversity at loci under various forms of balancing selection have been mainly described verbally. To understand better when such extinction vortices arise and to develop methods for detecting them, we propose quantitative eco-evolutionary models, both stochastic individual-based simulations and deterministic approximations, linking loss of genetic diversity and population decline. Using mathematical analysis and simulations, we identify parameter combinations that exhibit strong interactions between population size and genetic diversity and match our definition of an eco-evolutionary vortex (i.e., per capita population decline rates and per-locus fixation rates increase with decreasing population size and number of polymorphic loci). We further highlight cues that may be exhibited by such populations but find that classical early-warning signals are of limited use in detecting populations undergoing an eco-evolutionary extinction vortex.
Erscheinungsjahr
2021
Zeitschriftentitel
The American Naturalist
Seite(n)
000-000
ISSN
0003-0147
eISSN
1537-5323
Page URI
https://pub.uni-bielefeld.de/record/2950193

Zitieren

Nabutanyi P, Wittmann M. Models for Eco-Evolutionary Extinction Vortices under Balancing Selection. The American Naturalist. 2021:000-000.
Nabutanyi, P., & Wittmann, M. (2021). Models for Eco-Evolutionary Extinction Vortices under Balancing Selection. The American Naturalist, 000-000. doi:10.1086/712805
Nabutanyi, P., and Wittmann, M. (2021). Models for Eco-Evolutionary Extinction Vortices under Balancing Selection. The American Naturalist, 000-000.
Nabutanyi, P., & Wittmann, M., 2021. Models for Eco-Evolutionary Extinction Vortices under Balancing Selection. The American Naturalist, , p 000-000.
P. Nabutanyi and M. Wittmann, “Models for Eco-Evolutionary Extinction Vortices under Balancing Selection”, The American Naturalist, 2021, pp. 000-000.
Nabutanyi, P., Wittmann, M.: Models for Eco-Evolutionary Extinction Vortices under Balancing Selection. The American Naturalist. 000-000 (2021).
Nabutanyi, Peter, and Wittmann, Meike. “Models for Eco-Evolutionary Extinction Vortices under Balancing Selection”. The American Naturalist (2021): 000-000.

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