Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci?
When populations colonise new environments they may be exposed to novel selection pressures but also suffer from extensive genetic drift due to founder effects, small population sizes, and limited interpopulation gene flow. Genomic approaches enable us to study how these factors drive divergence, an...
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Online Access: | https://doi.org/10.5061/dryad.1g1jwsv4b |
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ftzenodo:oai:zenodo.org:10999633 2024-09-15T18:24:06+00:00 Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? Martin, Claudia Sheppard, Eleanor Ali, Hisham Illera, Juan Carlos Suh, Alex Spurgin, Lewis Richardson, David 2024-04-19 https://doi.org/10.5061/dryad.1g1jwsv4b unknown Zenodo https://doi.org/10.5061/dryad.9642b https://doi.org/10.5061/dryad.ksn02v75k https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.1g1jwsv4b oai:zenodo.org:10999633 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode Birds Genomic islands immune defence parallel adaptation Speciation genomic divergence Craniofacial evolution Genomics info:eu-repo/semantics/other 2024 ftzenodo https://doi.org/10.5061/dryad.1g1jwsv4b10.5061/dryad.9642b10.5061/dryad.ksn02v75k 2024-07-27T03:48:48Z When populations colonise new environments they may be exposed to novel selection pressures but also suffer from extensive genetic drift due to founder effects, small population sizes, and limited interpopulation gene flow. Genomic approaches enable us to study how these factors drive divergence, and disentangle neutral effects from differentiation at specific loci due to selection. Here, we investigate patterns of genetic diversity and divergence using whole-genome resequencing (> 22X coverage) in Berthelot's pipit ( Anthus berthelotii ), a passerine endemic to the islands of three north Atlantic archipelagos. Strong environmental gradients, including in pathogen pressure, across populations in the species range, make it an excellent system in which to explore traits important in adaptation and/or incipient speciation. Firstly, we quantify how genomic divergence accumulates across the speciation continuum, i.e., among Berthelot's pipit populations, between subspecies across archipelagos, and between Berthelot's pipit and its mainland ancestor, the tawny pipit ( Anthus campestris ). Across these colonisation timeframes (2.1 million – ca. 8,000 years ago), we identify highly differentiated loci within genomic islands of divergence and conclude that the observed distributions align with expectations for non-neutral divergence. Characteristic signatures of selection are identified in loci associated with craniofacial/bone and eye development, metabolism, and immune response between population comparisons. Interestingly, we find limited evidence for repeated divergence of the same loci across the colonisation range but do identify different loci putatively associated with the same biological traits in different populations, likely due to parallel adaptation. Incipient speciation across these island populations, in which founder effects and selective pressures are strong, may therefore be repeatedly associated with morphology, metabolism, and immune defence. Funding provided by: Natural Environment Research ... Other/Unknown Material North Atlantic Zenodo |
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Open Polar |
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Zenodo |
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Birds Genomic islands immune defence parallel adaptation Speciation genomic divergence Craniofacial evolution Genomics |
spellingShingle |
Birds Genomic islands immune defence parallel adaptation Speciation genomic divergence Craniofacial evolution Genomics Martin, Claudia Sheppard, Eleanor Ali, Hisham Illera, Juan Carlos Suh, Alex Spurgin, Lewis Richardson, David Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
topic_facet |
Birds Genomic islands immune defence parallel adaptation Speciation genomic divergence Craniofacial evolution Genomics |
description |
When populations colonise new environments they may be exposed to novel selection pressures but also suffer from extensive genetic drift due to founder effects, small population sizes, and limited interpopulation gene flow. Genomic approaches enable us to study how these factors drive divergence, and disentangle neutral effects from differentiation at specific loci due to selection. Here, we investigate patterns of genetic diversity and divergence using whole-genome resequencing (> 22X coverage) in Berthelot's pipit ( Anthus berthelotii ), a passerine endemic to the islands of three north Atlantic archipelagos. Strong environmental gradients, including in pathogen pressure, across populations in the species range, make it an excellent system in which to explore traits important in adaptation and/or incipient speciation. Firstly, we quantify how genomic divergence accumulates across the speciation continuum, i.e., among Berthelot's pipit populations, between subspecies across archipelagos, and between Berthelot's pipit and its mainland ancestor, the tawny pipit ( Anthus campestris ). Across these colonisation timeframes (2.1 million – ca. 8,000 years ago), we identify highly differentiated loci within genomic islands of divergence and conclude that the observed distributions align with expectations for non-neutral divergence. Characteristic signatures of selection are identified in loci associated with craniofacial/bone and eye development, metabolism, and immune response between population comparisons. Interestingly, we find limited evidence for repeated divergence of the same loci across the colonisation range but do identify different loci putatively associated with the same biological traits in different populations, likely due to parallel adaptation. Incipient speciation across these island populations, in which founder effects and selective pressures are strong, may therefore be repeatedly associated with morphology, metabolism, and immune defence. Funding provided by: Natural Environment Research ... |
format |
Other/Unknown Material |
author |
Martin, Claudia Sheppard, Eleanor Ali, Hisham Illera, Juan Carlos Suh, Alex Spurgin, Lewis Richardson, David |
author_facet |
Martin, Claudia Sheppard, Eleanor Ali, Hisham Illera, Juan Carlos Suh, Alex Spurgin, Lewis Richardson, David |
author_sort |
Martin, Claudia |
title |
Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
title_short |
Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
title_full |
Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
title_fullStr |
Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
title_full_unstemmed |
Data from: Genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
title_sort |
data from: genomic landscapes of divergence among island bird populations: evidence of parallel adaptation but at different loci? |
publisher |
Zenodo |
publishDate |
2024 |
url |
https://doi.org/10.5061/dryad.1g1jwsv4b |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://doi.org/10.5061/dryad.9642b https://doi.org/10.5061/dryad.ksn02v75k https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.1g1jwsv4b oai:zenodo.org:10999633 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.1g1jwsv4b10.5061/dryad.9642b10.5061/dryad.ksn02v75k |
_version_ |
1810464392932753408 |