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Genetics of ecologi...
Genetics of ecological divergence during speciation
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Arnegard, Matthew E. (author)
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McGee, Matthew D. (author)
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Matthews, Blake (author)
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Marchinko, Kerry B. (author)
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Conte, Gina L. (author)
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Kabir, Sahriar (author)
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Bedford, Nicole (author)
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- Bergek, Sara (author)
- Uppsala universitet,Zooekologi
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Chan, Yingguang Frank (author)
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Jones, Felicity C. (author)
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Kingsley, David M. (author)
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Peichel, Catherine L. (author)
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Schluter, Dolph (author)
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(creator_code:org_t)
- 2014-06-08
- 2014
- English.
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In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 511:7509, s. 307-311
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https://urn.kb.se/re...
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Abstract
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- Ecological differences often evolve early in speciation as divergent natural selection drives adaptation to distinct ecological niches, leading ultimately to reproductive isolation. Although this process is a major generator of biodiversity, its genetic basis is still poorly understood. Here we investigate the genetic architecture of niche differentiation in a sympatric species pair of threespine stickleback fish by mapping the environment-dependent effects of phenotypic traits on hybrid feeding and performance under semi-natural conditions. We show that multiple, unlinked loci act largely additively to determine position along the major niche axis separating these recently diverged species. We also find that functional mismatch between phenotypic traits reduces the growth of some stickleback hybrids beyond that expected from an intermediate phenotype, suggesting a role for epistasis between the underlying genes. This functional mismatch might lead to hybrid incompatibilities that are analogous to those underlying intrinsic reproductive isolation but depend on the ecological context.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
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- art (subject category)
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- By the author/editor
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Arnegard, Matthe ...
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McGee, Matthew D ...
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Matthews, Blake
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Marchinko, Kerry ...
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Conte, Gina L.
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Kabir, Sahriar
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show more...
-
Bedford, Nicole
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Bergek, Sara
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Chan, Yingguang ...
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Jones, Felicity ...
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Kingsley, David ...
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Peichel, Catheri ...
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Schluter, Dolph
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
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Nature
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Uppsala University