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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crroyalsociety:10.1098/rsos.140202 2024-06-23T07:55:40+00:00 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 http://dx.doi.org/10.1098/rsos.140202 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140202 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.140202 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 1, issue 2, page 140202 ISSN 2054-5703 journal-article 2014 crroyalsociety https://doi.org/10.1098/rsos.140202 2024-06-10T04:15:15Z 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. Article in Journal/Newspaper Northwest Atlantic The Royal Society Royal Society Open Science 1 2 140202 |
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crroyalsociety |
language |
English |
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 |
Article in Journal/Newspaper |
author |
Darling, John A. Tsai, Yi-Hsin Erica Blakeslee, April M. H. Roman, Joe |
spellingShingle |
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 |
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 |
publishDate |
2014 |
url |
http://dx.doi.org/10.1098/rsos.140202 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.140202 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.140202 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Royal Society Open Science volume 1, issue 2, page 140202 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
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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