Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc
Climate change, fisheries' pressure on penguin prey, and direct human disturbance of wildlife have all been implicated in causing large shifts in the abundance and distribution of penguins in the Southern Ocean. Without mark-recapture studies, understanding how colonies form and, by extension,...
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ftsouthampton:oai:eprints.soton.ac.uk:393830 2023-07-30T03:58:27+02:00 Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc Levy, Hila Clucas, Gemma V. Rogers, Alex D. Leaché, Adam D. Ciborowski, Kate L. Polito, Michael J. Lynch, Heather J. Dunn, Michael J. Hart, Tom 2016-03-15 text https://eprints.soton.ac.uk/393830/ https://eprints.soton.ac.uk/393830/1/Levy_et_al-2016-Ecology_and_Evolution.pdf en English eng https://eprints.soton.ac.uk/393830/1/Levy_et_al-2016-Ecology_and_Evolution.pdf Levy, Hila, Clucas, Gemma V., Rogers, Alex D., Leaché, Adam D., Ciborowski, Kate L., Polito, Michael J., Lynch, Heather J., Dunn, Michael J. and Hart, Tom (2016) Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc. Ecology and Evolution, 6 (6), 1834-1853. (doi:10.1002/ece3.1929 <http://dx.doi.org/10.1002/ece3.1929>). cc_by_4 Article PeerReviewed 2016 ftsouthampton https://doi.org/10.1002/ece3.1929 2023-07-09T22:07:21Z Climate change, fisheries' pressure on penguin prey, and direct human disturbance of wildlife have all been implicated in causing large shifts in the abundance and distribution of penguins in the Southern Ocean. Without mark-recapture studies, understanding how colonies form and, by extension, how ranges shift is challenging. Genetic studies, particularly focused on newly established colonies, provide a snapshot of colonization and can reveal the extent to which shifts in abundance and occupancy result from changes in demographic rates (e.g., reproduction and survival) or migration among suitable patches of habitat. Here, we describe the population structure of a colonial seabird breeding across a large latitudinal range in the Southern Ocean. Using multilocus microsatellite genotype data from 510 Gentoo penguin (Pygoscelis papua) individuals from 14 colonies along the Scotia Arc and Antarctic Peninsula, together with mitochondrial DNA data, we find strong genetic differentiation between colonies north and south of the Polar Front, that coincides geographically with the taxonomic boundary separating the subspecies P. p. papua and P. p. ellsworthii. Using a discrete Bayesian phylogeographic approach, we show that southern Gentoos expanded from a possible glacial refuge in the center of their current range, colonizing regions to the north and south through rare, long-distance dispersal. Our findings show that this dispersal is important for new colony foundation and range expansion in a seabird species that ordinarily exhibits high levels of natal philopatry, though persistent oceanographic features serve as barriers to movement. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Gentoo penguin Pygoscelis papua Southern Ocean University of Southampton: e-Prints Soton Antarctic Antarctic Peninsula Southern Ocean Ecology and Evolution 6 6 1834 1853 |
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Open Polar |
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University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Climate change, fisheries' pressure on penguin prey, and direct human disturbance of wildlife have all been implicated in causing large shifts in the abundance and distribution of penguins in the Southern Ocean. Without mark-recapture studies, understanding how colonies form and, by extension, how ranges shift is challenging. Genetic studies, particularly focused on newly established colonies, provide a snapshot of colonization and can reveal the extent to which shifts in abundance and occupancy result from changes in demographic rates (e.g., reproduction and survival) or migration among suitable patches of habitat. Here, we describe the population structure of a colonial seabird breeding across a large latitudinal range in the Southern Ocean. Using multilocus microsatellite genotype data from 510 Gentoo penguin (Pygoscelis papua) individuals from 14 colonies along the Scotia Arc and Antarctic Peninsula, together with mitochondrial DNA data, we find strong genetic differentiation between colonies north and south of the Polar Front, that coincides geographically with the taxonomic boundary separating the subspecies P. p. papua and P. p. ellsworthii. Using a discrete Bayesian phylogeographic approach, we show that southern Gentoos expanded from a possible glacial refuge in the center of their current range, colonizing regions to the north and south through rare, long-distance dispersal. Our findings show that this dispersal is important for new colony foundation and range expansion in a seabird species that ordinarily exhibits high levels of natal philopatry, though persistent oceanographic features serve as barriers to movement. |
format |
Article in Journal/Newspaper |
author |
Levy, Hila Clucas, Gemma V. Rogers, Alex D. Leaché, Adam D. Ciborowski, Kate L. Polito, Michael J. Lynch, Heather J. Dunn, Michael J. Hart, Tom |
spellingShingle |
Levy, Hila Clucas, Gemma V. Rogers, Alex D. Leaché, Adam D. Ciborowski, Kate L. Polito, Michael J. Lynch, Heather J. Dunn, Michael J. Hart, Tom Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
author_facet |
Levy, Hila Clucas, Gemma V. Rogers, Alex D. Leaché, Adam D. Ciborowski, Kate L. Polito, Michael J. Lynch, Heather J. Dunn, Michael J. Hart, Tom |
author_sort |
Levy, Hila |
title |
Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
title_short |
Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
title_full |
Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
title_fullStr |
Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
title_full_unstemmed |
Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc |
title_sort |
population structure and phylogeography of the gentoo penguin (pygoscelis papua) across the scotia arc |
publishDate |
2016 |
url |
https://eprints.soton.ac.uk/393830/ https://eprints.soton.ac.uk/393830/1/Levy_et_al-2016-Ecology_and_Evolution.pdf |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Gentoo penguin Pygoscelis papua Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Gentoo penguin Pygoscelis papua Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/393830/1/Levy_et_al-2016-Ecology_and_Evolution.pdf Levy, Hila, Clucas, Gemma V., Rogers, Alex D., Leaché, Adam D., Ciborowski, Kate L., Polito, Michael J., Lynch, Heather J., Dunn, Michael J. and Hart, Tom (2016) Population structure and phylogeography of the Gentoo Penguin (Pygoscelis papua) across the Scotia Arc. Ecology and Evolution, 6 (6), 1834-1853. (doi:10.1002/ece3.1929 <http://dx.doi.org/10.1002/ece3.1929>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1002/ece3.1929 |
container_title |
Ecology and Evolution |
container_volume |
6 |
container_issue |
6 |
container_start_page |
1834 |
op_container_end_page |
1853 |
_version_ |
1772821248794951680 |