Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas
Biological invasions offer unique opportunities to investigate evolutionary dynamics at the peripheries of expanding populations. Here, we examine genetic patterns associated with admixture between two distinct invasive lineages of the European green crab, Carcinus maenas L., independently introduce...
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ftpubmed:oai:pubmedcentral.nih.gov:4448889 2023-05-15T17:45:38+02:00 Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas Darling, John A. Tsai, Yi-Hsin Erica Blakeslee, April M. H. Roman, Joe 2014-10-15 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448889/ https://doi.org/10.1098/rsos.140202 en eng The Royal Society Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448889/ http://dx.doi.org/10.1098/rsos.140202 © 2014 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Research Articles Text 2014 ftpubmed https://doi.org/10.1098/rsos.140202 2015-06-14T00:05:58Z Biological invasions offer unique opportunities to investigate evolutionary dynamics at the peripheries of expanding populations. Here, we examine genetic patterns associated with admixture between two distinct invasive lineages of the European green crab, Carcinus maenas L., independently introduced to the northwest Atlantic. Previous investigations based on mitochondrial DNA sequences demonstrated that larval dispersal driven by advective currents could explain observed southward displacement of an admixture zone between the two invasions. Comparison of published mitochondrial results with new nuclear data from nine microsatellite loci, however, reveals striking discordance in their introgression patterns. Specifically, introgression of mitochondrial genomes relative to nuclear background suggests that demographic processes such as sex-biased reproductive dynamics and population size imbalances—and not solely larval dispersal—play an important role in driving the evolution of the genetic cline. In particular, the unpredicted introgression of mitochondrial alleles against the direction of mean larval dispersal in the region is consistent with recent models invoking similar demographic processes to explain movements of genes into invading populations. These observations have important implications for understanding historical shifts in C. maenas range limits, and more generally for inferences of larval dispersal based on genetic data. Text Northwest Atlantic PubMed Central (PMC) Royal Society Open Science 1 2 140202 |
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Research Articles |
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Research Articles Darling, John A. Tsai, Yi-Hsin Erica Blakeslee, April M. H. Roman, Joe Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
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Research Articles |
description |
Biological invasions offer unique opportunities to investigate evolutionary dynamics at the peripheries of expanding populations. Here, we examine genetic patterns associated with admixture between two distinct invasive lineages of the European green crab, Carcinus maenas L., independently introduced to the northwest Atlantic. Previous investigations based on mitochondrial DNA sequences demonstrated that larval dispersal driven by advective currents could explain observed southward displacement of an admixture zone between the two invasions. Comparison of published mitochondrial results with new nuclear data from nine microsatellite loci, however, reveals striking discordance in their introgression patterns. Specifically, introgression of mitochondrial genomes relative to nuclear background suggests that demographic processes such as sex-biased reproductive dynamics and population size imbalances—and not solely larval dispersal—play an important role in driving the evolution of the genetic cline. In particular, the unpredicted introgression of mitochondrial alleles against the direction of mean larval dispersal in the region is consistent with recent models invoking similar demographic processes to explain movements of genes into invading populations. These observations have important implications for understanding historical shifts in C. maenas range limits, and more generally for inferences of larval dispersal based on genetic data. |
format |
Text |
author |
Darling, John A. Tsai, Yi-Hsin Erica Blakeslee, April M. H. Roman, Joe |
author_facet |
Darling, John A. Tsai, Yi-Hsin Erica Blakeslee, April M. H. Roman, Joe |
author_sort |
Darling, John A. |
title |
Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
title_short |
Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
title_full |
Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
title_fullStr |
Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
title_full_unstemmed |
Are genes faster than crabs? Mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab Carcinus maenas |
title_sort |
are genes faster than crabs? mitochondrial introgression exceeds larval dispersal during population expansion of the invasive crab carcinus maenas |
publisher |
The Royal Society Publishing |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448889/ https://doi.org/10.1098/rsos.140202 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448889/ http://dx.doi.org/10.1098/rsos.140202 |
op_rights |
© 2014 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsos.140202 |
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Royal Society Open Science |
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1 |
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140202 |
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1766148800135561216 |