Assisted Gene Flow to Facilitate Local Adaptation to Climate Change

Annual Review of Ecology, Evolution, and Systematics - Tập 44 Số 1 - Trang 367-388 - 2013
Sally N. Aitken1,2, Michael C. Whitlock3
1Center for Forest Conservation Genetics, and
2Department of Forest and Conservation Sciences,
3Department of Zoology, University of British Columbia, Vancouver, British Columbia, V6T 1Z4, Canada

Tóm tắt

Assisted gene flow (AGF) between populations has the potential to mitigate maladaptation due to climate change. However, AGF may cause outbreeding depression (especially if source and recipient populations have been long isolated) and may disrupt local adaptation to nonclimatic factors. Selection should eliminate extrinsic outbreeding depression due to adaptive differences in large populations, and simulations suggest that, within a few generations, evolution should resolve mild intrinsic outbreeding depression due to epistasis. To weigh the risks of AGF against those of maladaptation due to climate change, we need to know the species' extent of local adaptation to climate and other environmental factors, as well as its pattern of gene flow. AGF should be a powerful tool for managing foundation and resource-producing species with large populations and broad ranges that show signs of historical adaptation to local climatic conditions.

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Annual Review of Ecology, Evolution, and Systematics

Tập 44 Số 1

367-388

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