Eco-evolutionary feedbacks, adaptive dynamics and evolutionary rescue theory.

Regis H J Ferriere, Stéphane Legendre

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Adaptive dynamics theory has been devised to account for feedbacks between ecological and evolutionary processes. Doing so opens new dimensions to and raises new challenges about evolutionary rescue. Adaptive dynamics theory predicts that successive trait substitutions driven by eco-evolutionary feedbacks can gradually erode population size or growth rate, thus potentially raising the extinction risk. Even a single trait substitution can suffice to degrade population viability drastically at once and cause 'evolutionary suicide'. In a changing environment, a population may track a viable evolutionary attractor that leads to evolutionary suicide, a phenomenon called 'evolutionary trapping'. Evolutionary trapping and suicide are commonly observed in adaptive dynamics models in which the smooth variation of traits causes catastrophic changes in ecological state. In the face of trapping and suicide, evolutionary rescue requires that the population overcome evolutionary threats generated by the adaptive process itself. Evolutionary repellors play an important role in determining how variation in environmental conditions correlates with the occurrence of evolutionary trapping and suicide, and what evolutionary pathways rescue may follow. In contrast with standard predictions of evolutionary rescue theory, low genetic variation may attenuate the threat of evolutionary suicide and small population sizes may facilitate escape from evolutionary traps.

Original languageEnglish (US)
Pages (from-to)20120081
Number of pages1
JournalPhilosophical transactions of the Royal Society of London. Series B: Biological sciences
Volume368
Issue number1610
StatePublished - Jan 19 2013

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suicide
Suicide
Substitution reactions
Feedback
trapping
Dynamic models
population size
substitution
Population
extinction risk
Population Growth
Population Density
dynamic models
genetic variation
population growth
viability
extinction
traps
environmental conditions
environmental factors

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Eco-evolutionary feedbacks, adaptive dynamics and evolutionary rescue theory. / Ferriere, Regis H J; Legendre, Stéphane.

In: Philosophical transactions of the Royal Society of London. Series B: Biological sciences, Vol. 368, No. 1610, 19.01.2013, p. 20120081.

Research output: Contribution to journalArticle

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