Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range
Background: Seabirds are important components of marine ecosystems, both as predators and as indicators of ecological change, being conspicuous and sensitive to changes in prey abundance. To determine whether fluctuations in population sizes are localised or indicative of large-scale ecosystem chang...
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ftdryad:oai:v1.datadryad.org:10255/dryad.127384 2023-05-15T13:31:24+02:00 Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range Clucas, Gemma V. Younger, Jane L. Kao, Damian Rogers, Alex D. Handley, Jonathan Miller, Gary D. Jouventin, Pierre Nolan, Paul Gharbi, Karim Miller, Karen J. Hart, Tom Falkland Islands (Islas Malvinas) South Georgia Crozet Archipelago Macquarie Island 2016-10-03T14:23:36Z http://hdl.handle.net/10255/dryad.127384 https://doi.org/10.5061/dryad.7c0q8 unknown doi:10.5061/dryad.7c0q8/1 doi:10.5061/dryad.7c0q8/2 doi:10.5061/dryad.7c0q8/3 doi:10.1186/s12862-016-0784-z PMID:27733109 doi:10.5061/dryad.7c0q8 Clucas GV, Younger JL, Kao D, Rogers AD, Handley J, Miller GD, Jouventin P, Nolan P, Gharbi K, Miller KJ, Hart T (2016) Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range. BMC Evolutionary Biology 16(1): 211. 1471-2148 http://hdl.handle.net/10255/dryad.127384 Southern Ocean seabirds molecular ecology dispersal genetic homogeneity RAD-Seq colonization gene flow Article 2016 ftdryad https://doi.org/10.5061/dryad.7c0q8 https://doi.org/10.5061/dryad.7c0q8/1 https://doi.org/10.5061/dryad.7c0q8/2 https://doi.org/10.5061/dryad.7c0q8/3 https://doi.org/10.1186/s12862-016-0784-z 2020-01-01T15:41:02Z Background: Seabirds are important components of marine ecosystems, both as predators and as indicators of ecological change, being conspicuous and sensitive to changes in prey abundance. To determine whether fluctuations in population sizes are localised or indicative of large-scale ecosystem change, we must first understand population structure and dispersal. King penguins are long-lived seabirds that occupy a niche across the sub-Antarctic zone close to the Polar Front. Colonies have very different histories of exploitation, population recovery, and expansion. Results: We investigated the genetic population structure and patterns of colonisation of king penguins across their current range using a dataset of 5154 unlinked, high-coverage single nucleotide polymorphisms generated via restriction site associated DNA sequencing (RADSeq). Despite breeding at a small number of discrete, geographically separate sites, we find only very slight genetic differentiation among colonies separated by thousands of kilometers of open-ocean, suggesting migration among islands and archipelagos may be common. Our results show that the South Georgia population is slightly differentiated from all other colonies and suggest that the recently founded Falkland Island colony is likely to have been established by migrants from the distant Crozet Islands rather than nearby colonies on South Georgia, possibly as a result of density-dependent processes. Conclusions: The observed subtle differentiation among king penguin colonies must be considered in future conservation planning and monitoring of the species, and demographic models that attempt to forecast extinction risk in response to large-scale climate change must take into account migration. It is possible that migration could buffer king penguins against some of the impacts of climate change where colonies appear panmictic, although it is unlikely to protect them completely given the widespread physical changes projected for their Southern Ocean foraging grounds. Overall, large-scale population genetic studies of marine predators across the Southern Ocean are revealing more interconnection and migration than previously supposed. Article in Journal/Newspaper Antarc* Antarctic Crozet Islands King Penguins Macquarie Island Southern Ocean Dryad Digital Repository (Duke University) Antarctic Southern Ocean |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Southern Ocean seabirds molecular ecology dispersal genetic homogeneity RAD-Seq colonization gene flow |
spellingShingle |
Southern Ocean seabirds molecular ecology dispersal genetic homogeneity RAD-Seq colonization gene flow Clucas, Gemma V. Younger, Jane L. Kao, Damian Rogers, Alex D. Handley, Jonathan Miller, Gary D. Jouventin, Pierre Nolan, Paul Gharbi, Karim Miller, Karen J. Hart, Tom Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
topic_facet |
Southern Ocean seabirds molecular ecology dispersal genetic homogeneity RAD-Seq colonization gene flow |
description |
Background: Seabirds are important components of marine ecosystems, both as predators and as indicators of ecological change, being conspicuous and sensitive to changes in prey abundance. To determine whether fluctuations in population sizes are localised or indicative of large-scale ecosystem change, we must first understand population structure and dispersal. King penguins are long-lived seabirds that occupy a niche across the sub-Antarctic zone close to the Polar Front. Colonies have very different histories of exploitation, population recovery, and expansion. Results: We investigated the genetic population structure and patterns of colonisation of king penguins across their current range using a dataset of 5154 unlinked, high-coverage single nucleotide polymorphisms generated via restriction site associated DNA sequencing (RADSeq). Despite breeding at a small number of discrete, geographically separate sites, we find only very slight genetic differentiation among colonies separated by thousands of kilometers of open-ocean, suggesting migration among islands and archipelagos may be common. Our results show that the South Georgia population is slightly differentiated from all other colonies and suggest that the recently founded Falkland Island colony is likely to have been established by migrants from the distant Crozet Islands rather than nearby colonies on South Georgia, possibly as a result of density-dependent processes. Conclusions: The observed subtle differentiation among king penguin colonies must be considered in future conservation planning and monitoring of the species, and demographic models that attempt to forecast extinction risk in response to large-scale climate change must take into account migration. It is possible that migration could buffer king penguins against some of the impacts of climate change where colonies appear panmictic, although it is unlikely to protect them completely given the widespread physical changes projected for their Southern Ocean foraging grounds. Overall, large-scale population genetic studies of marine predators across the Southern Ocean are revealing more interconnection and migration than previously supposed. |
format |
Article in Journal/Newspaper |
author |
Clucas, Gemma V. Younger, Jane L. Kao, Damian Rogers, Alex D. Handley, Jonathan Miller, Gary D. Jouventin, Pierre Nolan, Paul Gharbi, Karim Miller, Karen J. Hart, Tom |
author_facet |
Clucas, Gemma V. Younger, Jane L. Kao, Damian Rogers, Alex D. Handley, Jonathan Miller, Gary D. Jouventin, Pierre Nolan, Paul Gharbi, Karim Miller, Karen J. Hart, Tom |
author_sort |
Clucas, Gemma V. |
title |
Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
title_short |
Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
title_full |
Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
title_fullStr |
Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
title_full_unstemmed |
Data from: Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range |
title_sort |
data from: dispersal in the sub-antarctic: king penguins show remarkably little population genetic differentiation across their range |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.127384 https://doi.org/10.5061/dryad.7c0q8 |
op_coverage |
Falkland Islands (Islas Malvinas) South Georgia Crozet Archipelago Macquarie Island |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Crozet Islands King Penguins Macquarie Island Southern Ocean |
genre_facet |
Antarc* Antarctic Crozet Islands King Penguins Macquarie Island Southern Ocean |
op_relation |
doi:10.5061/dryad.7c0q8/1 doi:10.5061/dryad.7c0q8/2 doi:10.5061/dryad.7c0q8/3 doi:10.1186/s12862-016-0784-z PMID:27733109 doi:10.5061/dryad.7c0q8 Clucas GV, Younger JL, Kao D, Rogers AD, Handley J, Miller GD, Jouventin P, Nolan P, Gharbi K, Miller KJ, Hart T (2016) Dispersal in the sub-Antarctic: king penguins show remarkably little population genetic differentiation across their range. BMC Evolutionary Biology 16(1): 211. 1471-2148 http://hdl.handle.net/10255/dryad.127384 |
op_doi |
https://doi.org/10.5061/dryad.7c0q8 https://doi.org/10.5061/dryad.7c0q8/1 https://doi.org/10.5061/dryad.7c0q8/2 https://doi.org/10.5061/dryad.7c0q8/3 https://doi.org/10.1186/s12862-016-0784-z |
_version_ |
1766017876254261248 |