Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.)
From Crossref via Jisc Publications Router History: issued 2020-02-03 Abstract Background: Under the threat of climate change populations can disperse, acclimatise or evolve in order to avoid fitness loss. In light of this, it is important to understand neutral gene flow patterns as a measure of dis...
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ftchesteruniv:oai:chesterrep.openrepository.com:10034/623361 2023-05-15T17:25:20+02:00 Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) Muir, Anna P Dubois, Stanislas F. Ross, Rebecca E. Firth, Louise B. Knights, Antony M. Lima, Fernando P. Seabra, Rui Corre, Erwan Corguillé, Gildas Le Nunes, Flavia L. D. 2020-04-19T03:49:49Z http://hdl.handle.net/10034/623361 https://doi.org/10.21203/rs.2.11848/v2 unknown Research Square doi:10.21203/rs.2.11848/v2 http://hdl.handle.net/10034/623361 other 2020 ftchesteruniv https://doi.org/10.21203/rs.2.11848/v2 2022-03-02T19:58:10Z From Crossref via Jisc Publications Router History: issued 2020-02-03 Abstract Background: Under the threat of climate change populations can disperse, acclimatise or evolve in order to avoid fitness loss. In light of this, it is important to understand neutral gene flow patterns as a measure of dispersal potential, but also adaptive genetic variation as a measure of evolutionary potential. In order to assess genetic variation and how this relates to environment in the honeycomb worm (Sabellaria alveolata (L.)), a reef-building polychaete that supports high biodiversity, we carried out RAD sequencing using individuals from along its complete latitudinal range. Patterns of neutral population genetic structure were compared to larval dispersal as predicted by ocean circulation modelling, and outlier analyses and genotype-environment association tests were used to attempt to identify loci under selection in relation to local temperature data. Results: We genotyped 482 filtered SNPs, from 68 individuals across nine sites, 27 of which were identified as outliers using BAYESCAN and ARLEQUIN. All outlier loci were potentially under balancing selection, despite previous evidence of local adaptation in the system. Limited gene flow was observed among reef-sites (FST= 0.28 ± 0.10), in line with the low dispersal potential identified by the larval dispersal models. The North Atlantic reef emerged as a distinct population and this was linked to high local larval retention and the effect of the North Atlantic Current on dispersal. Conclusions: As an isolated population, with limited potential for natural genetic or demographic augmentation from other reefs, the North Atlantic site warrants conservation attention in order to preserve not only this species, but above all the crucial functional ecological roles that are associated with their bioconstructions. Our study highlights the utility of using seascape genomics to identify populations of conservation concern. Other/Unknown Material north atlantic current North Atlantic University of Chester: Chester Digital Repository |
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University of Chester: Chester Digital Repository |
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From Crossref via Jisc Publications Router History: issued 2020-02-03 Abstract Background: Under the threat of climate change populations can disperse, acclimatise or evolve in order to avoid fitness loss. In light of this, it is important to understand neutral gene flow patterns as a measure of dispersal potential, but also adaptive genetic variation as a measure of evolutionary potential. In order to assess genetic variation and how this relates to environment in the honeycomb worm (Sabellaria alveolata (L.)), a reef-building polychaete that supports high biodiversity, we carried out RAD sequencing using individuals from along its complete latitudinal range. Patterns of neutral population genetic structure were compared to larval dispersal as predicted by ocean circulation modelling, and outlier analyses and genotype-environment association tests were used to attempt to identify loci under selection in relation to local temperature data. Results: We genotyped 482 filtered SNPs, from 68 individuals across nine sites, 27 of which were identified as outliers using BAYESCAN and ARLEQUIN. All outlier loci were potentially under balancing selection, despite previous evidence of local adaptation in the system. Limited gene flow was observed among reef-sites (FST= 0.28 ± 0.10), in line with the low dispersal potential identified by the larval dispersal models. The North Atlantic reef emerged as a distinct population and this was linked to high local larval retention and the effect of the North Atlantic Current on dispersal. Conclusions: As an isolated population, with limited potential for natural genetic or demographic augmentation from other reefs, the North Atlantic site warrants conservation attention in order to preserve not only this species, but above all the crucial functional ecological roles that are associated with their bioconstructions. Our study highlights the utility of using seascape genomics to identify populations of conservation concern. |
format |
Other/Unknown Material |
author |
Muir, Anna P Dubois, Stanislas F. Ross, Rebecca E. Firth, Louise B. Knights, Antony M. Lima, Fernando P. Seabra, Rui Corre, Erwan Corguillé, Gildas Le Nunes, Flavia L. D. |
spellingShingle |
Muir, Anna P Dubois, Stanislas F. Ross, Rebecca E. Firth, Louise B. Knights, Antony M. Lima, Fernando P. Seabra, Rui Corre, Erwan Corguillé, Gildas Le Nunes, Flavia L. D. Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
author_facet |
Muir, Anna P Dubois, Stanislas F. Ross, Rebecca E. Firth, Louise B. Knights, Antony M. Lima, Fernando P. Seabra, Rui Corre, Erwan Corguillé, Gildas Le Nunes, Flavia L. D. |
author_sort |
Muir, Anna P |
title |
Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
title_short |
Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
title_full |
Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
title_fullStr |
Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
title_full_unstemmed |
Seascape genomics reveals population isolation in the reef-building honeycomb worm, Sabellaria alveolata (L.) |
title_sort |
seascape genomics reveals population isolation in the reef-building honeycomb worm, sabellaria alveolata (l.) |
publisher |
Research Square |
publishDate |
2020 |
url |
http://hdl.handle.net/10034/623361 https://doi.org/10.21203/rs.2.11848/v2 |
genre |
north atlantic current North Atlantic |
genre_facet |
north atlantic current North Atlantic |
op_relation |
doi:10.21203/rs.2.11848/v2 http://hdl.handle.net/10034/623361 |
op_doi |
https://doi.org/10.21203/rs.2.11848/v2 |
_version_ |
1766116725639610368 |