The contemporary evolution of fitness

Andrew P. Hendry, Daniel J. Schoen, Matthew E. Wolak, Jane M. Reid

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The rate of evolution of population mean fitness informs how selection acting in contemporary populations can counteract environmental change and genetic degradation (mutation, gene flow, drift, recombination). This rate will influence population increases (e.g., range expansion), population stability (e.g., “cryptic” eco-evolutionary dynamics), and population recovery (i.e., evolutionary rescue). We review approaches for estimating such rates, especially in wild populations. We then review empirical estimates derived from two approaches: mutation accumulation (MA) and additive genetic variance in fitness (IA). MA studies inform how selection counters genetic degradation arising from deleterious mutations; typically generating estimates of <1% per generation. IA studies provide an integrated prediction of proportional change per generation; nearly always generating estimates of <20% and, more typically, <10%. Thus, considerable, but not unlimited, evolutionary potential exists in populations facing detrimental environmental or genetic change. However, further studies with diverse methods and species are required for more robust and general insights.
Original languageEnglish
Pages (from-to)457-476
Number of pages20
JournalAnnual Review of Ecology, Evolution, and Systematics
Volume49
Early online date20 Aug 2018
DOIs
Publication statusPublished - Nov 2018

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mutation
fitness
range expansion
wild population
recombination
gene flow
environmental change
degradation
genetic variance
population growth
prediction
rate

Keywords

  • rapid evolution
  • contemporary evolution
  • microevolution
  • natural selection
  • adaptation
  • climate change

Cite this

The contemporary evolution of fitness. / Hendry, Andrew P.; Schoen, Daniel J.; Wolak, Matthew E.; Reid, Jane M.

In: Annual Review of Ecology, Evolution, and Systematics, Vol. 49, 11.2018, p. 457-476.

Research output: Contribution to journalArticle

Hendry, Andrew P. ; Schoen, Daniel J. ; Wolak, Matthew E. ; Reid, Jane M. / The contemporary evolution of fitness. In: Annual Review of Ecology, Evolution, and Systematics. 2018 ; Vol. 49. pp. 457-476.
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