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Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community?
Species responses to environmental change are likely to depend on existing genetic and phenotypic variation, as well as evolutionary potential. A key challenge is to determine whether gene flow might facilitate or impede genomic divergence among populations responding to environmental change, and if...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6988534/ https://www.ncbi.nlm.nih.gov/pubmed/32015859 http://dx.doi.org/10.1002/ece3.5961 |
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author | Slatyer, Rachel A. Schoville, Sean D. Nufio, César R. Buckley, Lauren B. |
author_facet | Slatyer, Rachel A. Schoville, Sean D. Nufio, César R. Buckley, Lauren B. |
author_sort | Slatyer, Rachel A. |
collection | PubMed |
description | Species responses to environmental change are likely to depend on existing genetic and phenotypic variation, as well as evolutionary potential. A key challenge is to determine whether gene flow might facilitate or impede genomic divergence among populations responding to environmental change, and if emergent phenotypic variation is dependent on gene flow rates. A general expectation is that patterns of genetic differentiation in a set of codistributed species reflect differences in dispersal ability. In less dispersive species, we predict greater genetic divergence and reduced gene flow. This could lead to covariation in life‐history traits due to local adaptation, although plasticity or drift could mirror these patterns. We compare genome‐wide patterns of genetic structure in four phenotypically variable grasshopper species along a steep elevation gradient near Boulder, Colorado, and test the hypothesis that genomic differentiation is greater in short‐winged grasshopper species, and statistically associated with variation in growth, reproductive, and physiological traits along this gradient. In addition, we estimate rates of gene flow under competing demographic models, as well as potential gene flow through surveys of phenological overlap among populations within a species. All species exhibit genetic structure along the elevation gradient and limited gene flow. The most pronounced genetic divergence appears in short‐winged (less dispersive) species, which also exhibit less phenological overlap among populations. A high‐elevation population of the most widespread species, Melanoplus sanguinipes, appears to be a sink population derived from low elevation populations. While dispersal ability has a clear connection to the genetic structure in different species, genetic distance does not predict growth, reproductive, or physiological trait variation in any species, requiring further investigation to clearly link phenotypic divergence to local adaptation. |
format | Online Article Text |
id | pubmed-6988534 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-69885342020-02-03 Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? Slatyer, Rachel A. Schoville, Sean D. Nufio, César R. Buckley, Lauren B. Ecol Evol Original Research Species responses to environmental change are likely to depend on existing genetic and phenotypic variation, as well as evolutionary potential. A key challenge is to determine whether gene flow might facilitate or impede genomic divergence among populations responding to environmental change, and if emergent phenotypic variation is dependent on gene flow rates. A general expectation is that patterns of genetic differentiation in a set of codistributed species reflect differences in dispersal ability. In less dispersive species, we predict greater genetic divergence and reduced gene flow. This could lead to covariation in life‐history traits due to local adaptation, although plasticity or drift could mirror these patterns. We compare genome‐wide patterns of genetic structure in four phenotypically variable grasshopper species along a steep elevation gradient near Boulder, Colorado, and test the hypothesis that genomic differentiation is greater in short‐winged grasshopper species, and statistically associated with variation in growth, reproductive, and physiological traits along this gradient. In addition, we estimate rates of gene flow under competing demographic models, as well as potential gene flow through surveys of phenological overlap among populations within a species. All species exhibit genetic structure along the elevation gradient and limited gene flow. The most pronounced genetic divergence appears in short‐winged (less dispersive) species, which also exhibit less phenological overlap among populations. A high‐elevation population of the most widespread species, Melanoplus sanguinipes, appears to be a sink population derived from low elevation populations. While dispersal ability has a clear connection to the genetic structure in different species, genetic distance does not predict growth, reproductive, or physiological trait variation in any species, requiring further investigation to clearly link phenotypic divergence to local adaptation. John Wiley and Sons Inc. 2019-12-30 /pmc/articles/PMC6988534/ /pubmed/32015859 http://dx.doi.org/10.1002/ece3.5961 Text en © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Research Slatyer, Rachel A. Schoville, Sean D. Nufio, César R. Buckley, Lauren B. Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title | Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title_full | Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title_fullStr | Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title_full_unstemmed | Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title_short | Do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
title_sort | do different rates of gene flow underlie variation in phenotypic and phenological clines in a montane grasshopper community? |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6988534/ https://www.ncbi.nlm.nih.gov/pubmed/32015859 http://dx.doi.org/10.1002/ece3.5961 |
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