Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate
Abstract Temperature is one of the most influential forces of natural selection impacting all biological levels. In the face of increasing global temperatures, studies over small geographic scales allowing investigations on the effects of gene flow are of great value for understanding thermal adapta...
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crwiley:10.1111/jeb.12902 2023-12-03T10:24:58+01:00 Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate Johansson, M. P. Quintela, M. Laurila, A. 2016 http://dx.doi.org/10.1111/jeb.12902 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjeb.12902 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeb.12902 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Evolutionary Biology volume 29, issue 9, page 1701-1712 ISSN 1010-061X 1420-9101 Ecology, Evolution, Behavior and Systematics journal-article 2016 crwiley https://doi.org/10.1111/jeb.12902 2023-11-09T14:28:04Z Abstract Temperature is one of the most influential forces of natural selection impacting all biological levels. In the face of increasing global temperatures, studies over small geographic scales allowing investigations on the effects of gene flow are of great value for understanding thermal adaptation. Here, we investigated genetic population structure in the freshwater gastropod Radix balthica originating from contrasting thermal habitats in three areas of geothermal activity in Iceland. Snails from 32 sites were genotyped at 208 AFLP loci. Five AFLP s were identified as putatively under divergent selection in Lake Mývatn, a geothermal lake with an almost 20 °C difference in mean temperature across a distance of a few kilometres. In four of these loci, variation across all study populations was correlated with temperature. We found significant population structure in neutral markers both within and between the areas. Cluster analysis using neutral markers classified the sites mainly by geography, whereas analyses using markers under selection differentiated the sites based on temperature. Isolation by distance was stronger in the neutral than in the outlier loci. Pairwise differences based on outlier F ST were significantly correlated with temperature at different spatial scales, even after correcting for geographic distance or neutral pairwise F ST differences. In general, genetic variation decreased with increasing environmental temperature, possibly suggesting that natural selection had reduced the genetic diversity in the warm origin sites. Our results emphasize the influence of environmental temperature on the genetic structure of populations and suggest local thermal adaptation in these geothermal habitats. Article in Journal/Newspaper Iceland Mývatn Wiley Online Library (via Crossref) Mývatn ENVELOPE(-16.985,-16.985,65.600,65.600) Journal of Evolutionary Biology 29 9 1701 1712 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology, Evolution, Behavior and Systematics Johansson, M. P. Quintela, M. Laurila, A. Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
topic_facet |
Ecology, Evolution, Behavior and Systematics |
description |
Abstract Temperature is one of the most influential forces of natural selection impacting all biological levels. In the face of increasing global temperatures, studies over small geographic scales allowing investigations on the effects of gene flow are of great value for understanding thermal adaptation. Here, we investigated genetic population structure in the freshwater gastropod Radix balthica originating from contrasting thermal habitats in three areas of geothermal activity in Iceland. Snails from 32 sites were genotyped at 208 AFLP loci. Five AFLP s were identified as putatively under divergent selection in Lake Mývatn, a geothermal lake with an almost 20 °C difference in mean temperature across a distance of a few kilometres. In four of these loci, variation across all study populations was correlated with temperature. We found significant population structure in neutral markers both within and between the areas. Cluster analysis using neutral markers classified the sites mainly by geography, whereas analyses using markers under selection differentiated the sites based on temperature. Isolation by distance was stronger in the neutral than in the outlier loci. Pairwise differences based on outlier F ST were significantly correlated with temperature at different spatial scales, even after correcting for geographic distance or neutral pairwise F ST differences. In general, genetic variation decreased with increasing environmental temperature, possibly suggesting that natural selection had reduced the genetic diversity in the warm origin sites. Our results emphasize the influence of environmental temperature on the genetic structure of populations and suggest local thermal adaptation in these geothermal habitats. |
format |
Article in Journal/Newspaper |
author |
Johansson, M. P. Quintela, M. Laurila, A. |
author_facet |
Johansson, M. P. Quintela, M. Laurila, A. |
author_sort |
Johansson, M. P. |
title |
Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
title_short |
Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
title_full |
Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
title_fullStr |
Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
title_full_unstemmed |
Genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
title_sort |
genetic divergence and isolation by thermal environment in geothermal populations of an aquatic invertebrate |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1111/jeb.12902 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjeb.12902 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jeb.12902 |
long_lat |
ENVELOPE(-16.985,-16.985,65.600,65.600) |
geographic |
Mývatn |
geographic_facet |
Mývatn |
genre |
Iceland Mývatn |
genre_facet |
Iceland Mývatn |
op_source |
Journal of Evolutionary Biology volume 29, issue 9, page 1701-1712 ISSN 1010-061X 1420-9101 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jeb.12902 |
container_title |
Journal of Evolutionary Biology |
container_volume |
29 |
container_issue |
9 |
container_start_page |
1701 |
op_container_end_page |
1712 |
_version_ |
1784273578857857024 |