Making sense of genomic islands of differentiation in light of speciation

Nature Reviews Genetics, Journal Year: 2016, Volume and Issue: 18(2), P. 87 - 100

Published: Nov. 14, 2016

Language: Английский

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Genomics of local adaptation with gene flow

Molecular Ecology, Journal Year: 2016, Volume and Issue: 25(10), P. 2144 - 2164

Published: March 6, 2016

Abstract Gene flow is a fundamental evolutionary force in adaptation that especially important to understand as humans are rapidly changing both the natural environment and levels of gene flow. Theory proposes multifaceted role for adaptation, but it focuses mainly on disruptive effect has when selection not strong enough prevent loss locally adapted alleles. The now better understood due recent development genomic models adaptive evolution techniques, which point importance genetic architecture origin maintenance with In this review, we discuss three main topics genomics First, investigate migration Second, potential sources variation relation adaptation. Third, explain how local maintained despite flow: provide synthesis mechanisms review empirical studies Despite predictions an increasing number show can promote adaptations be high flow, plays

Language: Английский

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Breaking RAD: an evaluation of the utility of restriction site‐associated DNA sequencing for genome scans of adaptation

Molecular Ecology Resources, Journal Year: 2016, Volume and Issue: 17(2), P. 142 - 152

Published: Nov. 15, 2016

Abstract Understanding how and why populations evolve is of fundamental importance to molecular ecology. Restriction site‐associated DNA sequencing ( RAD seq), a popular reduced representation method, has ushered in new era genome‐scale research for assessing population structure, hybridization, demographic history, phylogeography migration. seq also been widely used conduct genome scans detect loci involved adaptive divergence among natural populations. Here, we examine the capacity those seq‐based scan studies local adaptation. To understand what proportion missed by studies, developed simple model using different numbers ‐tags, sizes extents linkage disequilibrium (length haplotype blocks). Under best‐case modelling scenario, found that six‐ or eight‐base pair cutting restriction enzymes would fail sample many regions genome, especially species with short disequilibrium. We then surveyed recent have median density markers across these was 4.08 ‐tag per megabase (one marker 245 kb). The length one three orders magnitude less than typical study. Thus, conclude based on data alone, while useful neutral genetic variation will likely miss under selection

Language: Английский

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Gene expression plasticity as a mechanism of coral adaptation to a variable environment

Nature Ecology & Evolution, Journal Year: 2016, Volume and Issue: 1(1)

Published: Nov. 4, 2016

Language: Английский

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Adaptive introgression as a resource for management and genetic conservation in a changing climate

Conservation Biology, Journal Year: 2015, Volume and Issue: 30(1), P. 33 - 41

Published: June 22, 2015

Abstract Current rates of climate change require organisms to respond through migration, phenotypic plasticity, or genetic changes via adaptation. We focused on questions regarding species’ and populations’ ability Specifically, the role adaptive introgression, movement material from genome 1 species into another repeated interbreeding, may play in increasing a changing climate. Such interspecific gene flow mediate extinction risk consequences limited potential that result standing variation mutation alone, enabling quicker demographic recovery response environments. Despite near dismissal benefits hybridization by conservation practitioners, we examined number case studies across different taxa suggest between sympatric parapatric sister within exhibit strong ecotypic differentiation represent an underutilized management option conserve evolutionary environment. This will be particularly true where advanced‐generation hybrids traits outside parental range, phenomenon known as transgressive segregation. The ideas presented this essay are meant provoke discussion how maintain potential, value natural hybrid zones, consideration their important adaptation

Language: Английский

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Climate-adjusted provenancing: a strategy for climate-resilient ecological restoration

Frontiers in Ecology and Evolution, Journal Year: 2015, Volume and Issue: 3

Published: June 23, 2015

OPINION article Front. Ecol. Evol., 23 June 2015Sec. Interdisciplinary Climate Studies Volume 3 - 2015 | https://doi.org/10.3389/fevo.2015.00065

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Advances and limits of using population genetics to understand local adaptation

Trends in Ecology & Evolution, Journal Year: 2014, Volume and Issue: 29(12), P. 673 - 680

Published: Nov. 1, 2014

Language: Английский

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Common garden experiments in the genomic era: new perspectives and opportunities

Heredity, Journal Year: 2015, Volume and Issue: 116(3), P. 249 - 254

Published: Oct. 21, 2015

Language: Английский

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Local Adaptation by Alleles of Small Effect

The American Naturalist, Journal Year: 2015, Volume and Issue: 186(S1), P. S74 - S89

Published: Aug. 25, 2015

Population genetic models predict that alleles with small selection coefficients may be swamped by migration and will not contribute to local adaptation. But if most contributing standing variation are of effect, how does adaptation proceed? Here I review predictions population quantitative use individual-based simulations illustrate the architecture depends on redundancy trait, maintenance (V(G)), susceptibility swamping. Even when swamping for individual alleles, considerable can evolve at phenotypic level there is sufficient V(G). However, in such cases underlying divergence transient: F(ST) low across all loci, no locus makes an important contribution very long. Because this kind mainly due transient frequency changes allelic covariances, these architectures difficult--if impossible--to detect using current approaches studying genomic basis large resistant swamping, highly mutation rates high. These results suggest drift play a critical role shaping adaptation, both through eroding V(G) affecting rate turnover polymorphisms redundant effects.

Language: Английский

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Evolutionary genomics can improve prediction of species’ responses to climate change

Evolution Letters, Journal Year: 2020, Volume and Issue: 4(1), P. 4 - 18

Published: Jan. 14, 2020

Abstract Global climate change (GCC) increasingly threatens biodiversity through the loss of species, and transformation entire ecosystems. Many species are challenged by pace GCC because they might not be able to respond fast enough changing biotic abiotic conditions. Species can either shifting their range, or persisting in local habitat. If populations persist, tolerate climatic changes phenotypic plasticity, genetically adapt conditions depending on genetic variability census population size allow for de novo mutations. Otherwise, will experience demographic collapses may go extinct. Current approaches predicting responses begin combine ecological evolutionary information distribution modelling. Including an dimension substantially improve projections which have accounted key processes such as dispersal, adaptive change, demography, interactions. However, eco-evolutionary models require new data methods estimation a species' potential, so far only been available small number model species. To represent global biodiversity, we need devise large-scale collection strategies define ecology potential broad range especially keystone We also standardized replicable modelling that integrate these account when impact survival. Here, discuss different genomic used investigate predict GCC. This serve guidance researchers looking appropriate experimental setup particular system. furthermore highlight future directions moving forward field allocating resources more effectively, implement mitigation measures before extinct ecosystems lose important functions.

Language: Английский

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