Journal
MOLECULAR ECOLOGY
Volume 24, Issue 9, Pages 2046-2055Publisher
WILEY
DOI: 10.1111/mec.13074
Keywords
adaptation; ecological genetics; evolutionary theory; invasive species; molecular evolution; population genetics - theoretical
Funding
- NSF [DEB-0819901]
- Division Of Environmental Biology
- Direct For Biological Sciences [0819901] Funding Source: National Science Foundation
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A chromosome inversion can spread when it captures locally adapted alleles or when it is introduced into a species by hybridization with adapted alleles that were previously absent. We present a model that shows how both processes can cause a species range to expand. Introgression of an inversion that carries novel, locally adapted alleles is a particularly powerful mechanism for range expansion. The model supports the earlier proposal that introgression of an inversion triggered a large range expansion of a malaria mosquito. These results suggest a role for inversions as cassettes of genes that can accelerate adaptation by crossing species boundaries, rather than protecting genomes from introgression.
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