Evolvability and evolutionary rescue

Nathalie Feiner, Miguel Brun-Usan, Tobias Uller

    Research output: Contribution to journalArticlepeer-review


    The survival prospects of threatened species or populations can sometimes be improved by adaptive change. Such evolutionary rescue is particularly relevant when the threat comes from changing environments, or when long-term population persistence requires range expansion into new habitats. Conservation biologists are therefore often interested in whether or not populations or lineages show a disposition for adaptive evolution, that is, if they are evolvable. Here, we discuss four alternative perspectives that target different causes of evolvability and outline some of the key challenges those perspectives are designed to address. Standing genetic variation provides one familiar estimate of evolvability. Yet, the mere presence of genetic variation is often insufficient to predict if a population will adapt, or how it will adapt. The reason is that adaptive change not only depends on genetic variation, but also on the extent to which this genetic variation can be realized as adaptive phenotypic variation. This requires attention to developmental systems and how plasticity influences evolutionary potential. Finally, we discuss how a better understanding of the different factors that contribute to evolvability can be exploited in conservation practice.

    Original languageEnglish
    Pages (from-to)308-319
    JournalEvolution and Development
    Issue number4
    Early online date2021 Feb 2
    Publication statusPublished - 2021

    Subject classification (UKÄ)

    • Evolutionary Biology

    Free keywords

    • developmental bias
    • gene regulatory networks
    • variational properties


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