AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod
The way environmental variation shapes neutral and adaptive genetic variation in natural populations is a key issue in evolutionary biology. Genome scans allow the identification of the genetic basis of local adaptation without previous knowledge of genetic variation or traits under selection. Candi...
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Uppsala universitet, Zooekologi
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ftuppsalauniv:oai:DiVA.org:uu-230100 2023-05-15T16:51:05+02:00 AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod Quintela, Maria Johansson, Magnus P. Kristjansson, Bjarni K. Barreiro, Rodolfo Laurila, Anssi 2014 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230100 https://doi.org/10.1371/journal.pone.0101821 eng eng Uppsala universitet, Zooekologi PLOS ONE, 2014, 9:7, s. e101821- http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230100 doi:10.1371/journal.pone.0101821 ISI:000339040600068 info:eu-repo/semantics/openAccess Ecology Ekologi Zoology Zoologi Article in journal info:eu-repo/semantics/article text 2014 ftuppsalauniv https://doi.org/10.1371/journal.pone.0101821 2023-02-23T21:55:57Z The way environmental variation shapes neutral and adaptive genetic variation in natural populations is a key issue in evolutionary biology. Genome scans allow the identification of the genetic basis of local adaptation without previous knowledge of genetic variation or traits under selection. Candidate loci for divergent adaptation are expected to show higher F-ST than neutral loci influenced solely by random genetic drift, migration and mutation. The comparison of spatial patterns of neutral markers and loci under selection may help disentangle the effects of gene flow, genetic drift and selection among populations living in contrasting environments. Using the gastropod Radix balthica as a system, we analyzed 376 AFLP markers and 25 mtDNA COI haplotypes for candidate loci and associations with local adaptation among contrasting thermal environments in Lake Myvatn, a volcanic lake in northern Iceland. We found that 2% of the analysed AFLP markers were under directional selection and 12% of the mitochondrial haplotypes correlated with differing thermal habitats. The genetic networks were concordant for AFLP markers and mitochondrial haplotypes, depicting distinct topologies at neutral and candidate loci. Neutral topologies were characterized by intense gene flow revealed by dense nets with edges connecting contrasting thermal habitats, whereas the connections at candidate loci were mostly restricted to populations within each thermal habitat and the number of edges decreased with temperature. Our results suggest microgeographic adaptation within Lake Myvatn and highlight the utility of genome scans in detecting adaptive divergence. Article in Journal/Newspaper Iceland Uppsala University: Publications (DiVA) PLoS ONE 9 7 e101821 |
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Open Polar |
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Uppsala University: Publications (DiVA) |
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ftuppsalauniv |
language |
English |
topic |
Ecology Ekologi Zoology Zoologi |
spellingShingle |
Ecology Ekologi Zoology Zoologi Quintela, Maria Johansson, Magnus P. Kristjansson, Bjarni K. Barreiro, Rodolfo Laurila, Anssi AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
topic_facet |
Ecology Ekologi Zoology Zoologi |
description |
The way environmental variation shapes neutral and adaptive genetic variation in natural populations is a key issue in evolutionary biology. Genome scans allow the identification of the genetic basis of local adaptation without previous knowledge of genetic variation or traits under selection. Candidate loci for divergent adaptation are expected to show higher F-ST than neutral loci influenced solely by random genetic drift, migration and mutation. The comparison of spatial patterns of neutral markers and loci under selection may help disentangle the effects of gene flow, genetic drift and selection among populations living in contrasting environments. Using the gastropod Radix balthica as a system, we analyzed 376 AFLP markers and 25 mtDNA COI haplotypes for candidate loci and associations with local adaptation among contrasting thermal environments in Lake Myvatn, a volcanic lake in northern Iceland. We found that 2% of the analysed AFLP markers were under directional selection and 12% of the mitochondrial haplotypes correlated with differing thermal habitats. The genetic networks were concordant for AFLP markers and mitochondrial haplotypes, depicting distinct topologies at neutral and candidate loci. Neutral topologies were characterized by intense gene flow revealed by dense nets with edges connecting contrasting thermal habitats, whereas the connections at candidate loci were mostly restricted to populations within each thermal habitat and the number of edges decreased with temperature. Our results suggest microgeographic adaptation within Lake Myvatn and highlight the utility of genome scans in detecting adaptive divergence. |
format |
Article in Journal/Newspaper |
author |
Quintela, Maria Johansson, Magnus P. Kristjansson, Bjarni K. Barreiro, Rodolfo Laurila, Anssi |
author_facet |
Quintela, Maria Johansson, Magnus P. Kristjansson, Bjarni K. Barreiro, Rodolfo Laurila, Anssi |
author_sort |
Quintela, Maria |
title |
AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
title_short |
AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
title_full |
AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
title_fullStr |
AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
title_full_unstemmed |
AFLPs and Mitochondrial Haplotypes Reveal Local Adaptation to Extreme Thermal Environments in a Freshwater Gastropod |
title_sort |
aflps and mitochondrial haplotypes reveal local adaptation to extreme thermal environments in a freshwater gastropod |
publisher |
Uppsala universitet, Zooekologi |
publishDate |
2014 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230100 https://doi.org/10.1371/journal.pone.0101821 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
PLOS ONE, 2014, 9:7, s. e101821- http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-230100 doi:10.1371/journal.pone.0101821 ISI:000339040600068 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0101821 |
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PLoS ONE |
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9 |
container_issue |
7 |
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e101821 |
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1766041205946187776 |