Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population?
The processes and timescales associated with ocean-wide changes in the distribution of marine species have intrigued biologists since Darwin’s earliest insights into biogeography. The Azores, a mid-Atlantic volcanic archipelago located >1000 km off the European continental shelf, offers ideal opp...
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ftdryad:oai:v1.datadryad.org:10255/dryad.87311 2023-05-15T17:38:37+02:00 Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? Stefanni, Sergio Castilho, Rita Sala-Bozano, Maria Robalo, Joana I. Francisco, Sara M. Santos, Ricardo S. Marques, Nuno Brito, Alberto Almada, Vitor C. Mariani, Stefano Mediterranean Sea North East Atlantic Azores islands 2015-05-11T14:38:56Z http://hdl.handle.net/10255/dryad.87311 https://doi.org/10.5061/dryad.bd6h3 unknown doi:10.5061/dryad.bd6h3/1 doi:10.1038/hdy.2015.55 PMID:26174025 doi:10.5061/dryad.bd6h3 Stefanni S, Castilho R, Sala-Bozano M, Robalo JI, Francisco SM, Santos RS, Marques N, Brito A, Almada VC, Mariani S (2015) Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? Heredity 115: 527–537. http://hdl.handle.net/10255/dryad.87311 Dispersal gene flow genetic drift island biogeography Mediterranean-Atlantic boundary Article 2015 ftdryad https://doi.org/10.5061/dryad.bd6h3 https://doi.org/10.5061/dryad.bd6h3/1 https://doi.org/10.1038/hdy.2015.55 2020-01-01T15:19:51Z The processes and timescales associated with ocean-wide changes in the distribution of marine species have intrigued biologists since Darwin’s earliest insights into biogeography. The Azores, a mid-Atlantic volcanic archipelago located >1000 km off the European continental shelf, offers ideal opportunities to investigate phylogeographic colonisation scenarios. The benthopelagic sparid fish known as the common two-banded seabream (Diplodus vulgaris) is now relatively common along the coastline of the Azores archipelago, but was virtually absent before the 1990s. We employed a multiple genetic marker approach to test whether the successful establishment of the Azorean population derives from a recent colonisation from western continental/island populations or from the demographic explosion of an ancient relict population. Results from nuclear and mtDNA sequences show that all Atlantic and Mediterranean populations belong to the same phylogroup, though microsatellite data indicate significant genetic divergence between the Azorean sample and all other locations, as well as among Macaronesian, western Iberian and Mediterranean regions. The results from Approximate Bayesian Computation indicate that D. vulgaris has likely inhabited the Azores for ~40 (95% confidence interval (CI): 5.5–83.6) to 52 (95% CI: 6.32–89.0) generations, corresponding to roughly 80–150 years, suggesting near-contemporary colonisation, followed by a more recent demographic expansion that could have been facilitated by changing climate conditions. Moreover, the lack of previous records of this species over the past century, together with the absence of lineage separation and the presence of relatively few private alleles, do not exclude the possibility of an even more recent colonisation event. Article in Journal/Newspaper North East Atlantic Dryad Digital Repository (Duke University) |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Dispersal gene flow genetic drift island biogeography Mediterranean-Atlantic boundary |
spellingShingle |
Dispersal gene flow genetic drift island biogeography Mediterranean-Atlantic boundary Stefanni, Sergio Castilho, Rita Sala-Bozano, Maria Robalo, Joana I. Francisco, Sara M. Santos, Ricardo S. Marques, Nuno Brito, Alberto Almada, Vitor C. Mariani, Stefano Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
topic_facet |
Dispersal gene flow genetic drift island biogeography Mediterranean-Atlantic boundary |
description |
The processes and timescales associated with ocean-wide changes in the distribution of marine species have intrigued biologists since Darwin’s earliest insights into biogeography. The Azores, a mid-Atlantic volcanic archipelago located >1000 km off the European continental shelf, offers ideal opportunities to investigate phylogeographic colonisation scenarios. The benthopelagic sparid fish known as the common two-banded seabream (Diplodus vulgaris) is now relatively common along the coastline of the Azores archipelago, but was virtually absent before the 1990s. We employed a multiple genetic marker approach to test whether the successful establishment of the Azorean population derives from a recent colonisation from western continental/island populations or from the demographic explosion of an ancient relict population. Results from nuclear and mtDNA sequences show that all Atlantic and Mediterranean populations belong to the same phylogroup, though microsatellite data indicate significant genetic divergence between the Azorean sample and all other locations, as well as among Macaronesian, western Iberian and Mediterranean regions. The results from Approximate Bayesian Computation indicate that D. vulgaris has likely inhabited the Azores for ~40 (95% confidence interval (CI): 5.5–83.6) to 52 (95% CI: 6.32–89.0) generations, corresponding to roughly 80–150 years, suggesting near-contemporary colonisation, followed by a more recent demographic expansion that could have been facilitated by changing climate conditions. Moreover, the lack of previous records of this species over the past century, together with the absence of lineage separation and the presence of relatively few private alleles, do not exclude the possibility of an even more recent colonisation event. |
format |
Article in Journal/Newspaper |
author |
Stefanni, Sergio Castilho, Rita Sala-Bozano, Maria Robalo, Joana I. Francisco, Sara M. Santos, Ricardo S. Marques, Nuno Brito, Alberto Almada, Vitor C. Mariani, Stefano |
author_facet |
Stefanni, Sergio Castilho, Rita Sala-Bozano, Maria Robalo, Joana I. Francisco, Sara M. Santos, Ricardo S. Marques, Nuno Brito, Alberto Almada, Vitor C. Mariani, Stefano |
author_sort |
Stefanni, Sergio |
title |
Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
title_short |
Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
title_full |
Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
title_fullStr |
Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
title_full_unstemmed |
Data from: Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? |
title_sort |
data from: establishment of a coastal fish in the azores: recent colonisation or sudden expansion of an ancient relict population? |
publishDate |
2015 |
url |
http://hdl.handle.net/10255/dryad.87311 https://doi.org/10.5061/dryad.bd6h3 |
op_coverage |
Mediterranean Sea North East Atlantic Azores islands |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
doi:10.5061/dryad.bd6h3/1 doi:10.1038/hdy.2015.55 PMID:26174025 doi:10.5061/dryad.bd6h3 Stefanni S, Castilho R, Sala-Bozano M, Robalo JI, Francisco SM, Santos RS, Marques N, Brito A, Almada VC, Mariani S (2015) Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population? Heredity 115: 527–537. http://hdl.handle.net/10255/dryad.87311 |
op_doi |
https://doi.org/10.5061/dryad.bd6h3 https://doi.org/10.5061/dryad.bd6h3/1 https://doi.org/10.1038/hdy.2015.55 |
_version_ |
1766139148404523008 |