Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus
Little is known about the genetic and molecular mechanisms that underlie adaptive phenotypic variation in natural populations or whether similar genetic and molecular mechanisms are utilized when similar adaptive phenotypes arise in independent populations. The threespine stickleback (Gasterosteus a...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.490.8265 2023-05-15T16:50:41+02:00 Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus Susan M. Coyle Felicity A. Huntingford Catherine L. Peichel The Pennsylvania State University CiteSeerX Archives 2007 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8265 http://jhered.oxfordjournals.org/content/98/6/581.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8265 http://jhered.oxfordjournals.org/content/98/6/581.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://jhered.oxfordjournals.org/content/98/6/581.full.pdf text 2007 ftciteseerx 2016-01-08T08:30:07Z Little is known about the genetic and molecular mechanisms that underlie adaptive phenotypic variation in natural populations or whether similar genetic and molecular mechanisms are utilized when similar adaptive phenotypes arise in independent populations. The threespine stickleback (Gasterosteus aculeatus) is a good model system to investigate these questions because these fish display a large amount of adaptive phenotypic variation, and similar adaptive phenotypes have arisen in multiple, independent stickleback populations. A particularly striking pattern of parallel evolution in sticklebacks is reduction of skeletal armor, which has occurred in numerous freshwater locations around the world. New genetic and genomic tools for the threespine stickleback have made it possible to identify genes that underlie loss of different elements of the skeletal armor. Previous work has shown that regulatory mutations at the Pitx1 locus are likely responsible for loss of the pelvic structures in independent stickleback populations from North America and Iceland. Here we show that the Pitx1 locus is also likely to underlie pelvic reduction in a Scottish population of threespine stickleback, which has apparently evolved pelvic reduction under a different selection regime than the North American populations. Although the selective forces that contribute to adaptive phenotypic variation are beginning to be understood, very little is known about the genetic changes on which selection Text Iceland Unknown |
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Little is known about the genetic and molecular mechanisms that underlie adaptive phenotypic variation in natural populations or whether similar genetic and molecular mechanisms are utilized when similar adaptive phenotypes arise in independent populations. The threespine stickleback (Gasterosteus aculeatus) is a good model system to investigate these questions because these fish display a large amount of adaptive phenotypic variation, and similar adaptive phenotypes have arisen in multiple, independent stickleback populations. A particularly striking pattern of parallel evolution in sticklebacks is reduction of skeletal armor, which has occurred in numerous freshwater locations around the world. New genetic and genomic tools for the threespine stickleback have made it possible to identify genes that underlie loss of different elements of the skeletal armor. Previous work has shown that regulatory mutations at the Pitx1 locus are likely responsible for loss of the pelvic structures in independent stickleback populations from North America and Iceland. Here we show that the Pitx1 locus is also likely to underlie pelvic reduction in a Scottish population of threespine stickleback, which has apparently evolved pelvic reduction under a different selection regime than the North American populations. Although the selective forces that contribute to adaptive phenotypic variation are beginning to be understood, very little is known about the genetic changes on which selection |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Susan M. Coyle Felicity A. Huntingford Catherine L. Peichel |
spellingShingle |
Susan M. Coyle Felicity A. Huntingford Catherine L. Peichel Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
author_facet |
Susan M. Coyle Felicity A. Huntingford Catherine L. Peichel |
author_sort |
Susan M. Coyle |
title |
Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
title_short |
Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
title_full |
Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
title_fullStr |
Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
title_full_unstemmed |
Parallel evolution of Pitx1 underlies pelvic reduction in Scottish threespine stickleback (Gasterosteus aculeatus |
title_sort |
parallel evolution of pitx1 underlies pelvic reduction in scottish threespine stickleback (gasterosteus aculeatus |
publishDate |
2007 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8265 http://jhered.oxfordjournals.org/content/98/6/581.full.pdf |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
http://jhered.oxfordjournals.org/content/98/6/581.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.8265 http://jhered.oxfordjournals.org/content/98/6/581.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766040809612771328 |