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PARALLEL EVOLUTION ...
PARALLEL EVOLUTION OF LOCAL ADAPTATION AND REPRODUCTIVE ISOLATION IN THE FACE OF GENE FLOW
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- Butlin, Roger, 1955 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Saura, M. (author)
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- Charrier, Grégory, 1978 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Jackson, B. (author)
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- André, Carl, 1958 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Caballero, A. (author)
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Coyne, J. A. (author)
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Galindo, J. (author)
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Grahame, J. W. (author)
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Hollander, J. (author)
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- Kemppainen, Petri, 1979 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Martinez-Fernandez, M. (author)
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- Panova, Marina, 1973 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Quesada, H. (author)
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- Johannesson, Kerstin, 1955 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Rolan-Alvarez, E. (author)
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(creator_code:org_t)
- 2013-12-23
- 2014
- English.
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In: Evolution. - : Wiley. - 0014-3820. ; 68:4, s. 935-949
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Abstract
Subject headings
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- Parallel evolution of similar phenotypes provides strong evidence for the operation of natural selection. Where these phenotypes contribute to reproductive isolation, they further support a role for divergent, habitat-associated selection in speciation. However, the observation of pairs of divergent ecotypes currently occupying contrasting habitats in distinct geographical regions is not sufficient to infer parallel origins. Here we show striking parallel phenotypic divergence between populations of the rocky-shore gastropod, Littorina saxatilis, occupying contrasting habitats exposed to either wave action or crab predation. This divergence is associated with barriers to gene exchange but, nevertheless, genetic variation is more strongly structured by geography than by ecotype. Using approximate Bayesian analysis of sequence data and amplified fragment length polymorphism markers, we show that the ecotypes are likely to have arisen in the face of continuous gene flow and that the demographic separation of ecotypes has occurred in parallel at both regional and local scales. Parameter estimates suggest a long delay between colonization of a locality and ecotype formation, perhaps because the postglacial spread of crab populations was slower than the spread of snails. Adaptive differentiation may not be fully genetically independent despite being demographically parallel. These results provide new insight into a major model of ecologically driven speciation.
Subject headings
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- speciation
- parallel evolution
- Gene flow
- local adaptation
- SNAIL LITTORINA-SAXATILIS
- APPROXIMATE BAYESIAN COMPUTATION
- MARINE
- SNAIL
- ECOLOGICAL SPECIATION
- MATHEMATICAL-MODELS
- NATURAL-SELECTION
- ANNUAL SUNFLOWERS
- POPULATION SIZES
- NORTH-AMERICA
- CRATER LAKE
Publication and Content Type
- ref (subject category)
- art (subject category)
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Evolution
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- By the author/editor
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Butlin, Roger, 1 ...
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Saura, M.
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Charrier, Grégor ...
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Jackson, B.
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André, Carl, 195 ...
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Caballero, A.
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Coyne, J. A.
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Galindo, J.
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Grahame, J. W.
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Hollander, J.
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Kemppainen, Petr ...
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Martinez-Fernand ...
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Panova, Marina, ...
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Quesada, H.
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Johannesson, Ker ...
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Rolan-Alvarez, E ...
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Evolutionary Bio ...
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Evolution
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University of Gothenburg