What the study found
The study found that scarlet monkeyflower populations declined across their range during an exceptional drought, but recovery varied and was predictable by standing genetic variation and rapid evolution at climate-associated loci. The authors also report that genetic variation at adaptive loci, rather than neutral loci, predicted population recovery.
Why the authors say this matters
The authors conclude that these findings demonstrate the possibility of evolutionary rescue in the wild, meaning that a population may persist because it evolves in response to environmental stress. The study suggests that rapid evolution can help explain how some populations recover after climate-related declines.
What the researchers tested
The researchers studied scarlet monkeyflower, Mimulus cardinalis, during a severe drought. They used whole-genome sequencing across 55 populations to identify climate-associated loci, while also tracking demographic change and allele frequency change throughout the drought.
What worked and what didn't
Population decline was observed range-wide during the drought. Rapid evolution occurred, but it varied geographically, and population recovery also varied. Recovery was predictable from standing genetic variation in, and rapid evolution at, climate-associated loci, but not from neutral loci.
What to keep in mind
The abstract does not describe specific limitations beyond the scope of this study. The findings are based on one species and one drought event, so the available summary does not indicate whether the same pattern applies more broadly.
Key points
- Scarlet monkeyflower populations declined across their range during an exceptional drought.
- Population recovery varied geographically after the drought.
- Standing genetic variation and rapid evolution at climate-associated loci predicted recovery.
- Genetic variation at adaptive loci predicted recovery, but neutral loci did not.
- The authors describe this as evidence for possible evolutionary rescue in the wild.
Disclosure
- Research title:
- Rapid evolution predicted recovery after drought
- Authors:
- Daniel N. Anstett, Julia Anstett, Seema N. Sheth, Dylan R. Moxley, Haley A. Branch, Mojtaba Jahani, Kaichi Huang, Marco Todesco, Rebecca Jordan, José M. Lázaro-Guevara, Loren H. Rieseberg, Amy L. Angert
- Institutions:
- University of British Columbia, Cornell University, Michigan State University, Genome British Columbia, North Carolina State University, Canada's Michael Smith Genome Sciences Centre, Yale University, John Brown University, Sun Yat-sen University, University of British Columbia, Okanagan Campus, Commonwealth Scientific and Industrial Research Organisation, McGill University Health Centre, McGill University
- Publication date:
- 2026-03-12
- OpenAlex record:
- View
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