Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae
Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to higher exploitation rates by the tick Ixodes uriae. Using data from 8 microsatellite markers and ticks from 6 Pygoscelis spp. colonies, we em...
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ftubarcepubl:oai:diposit.ub.edu:2445/61231 2024-02-11T09:57:26+01:00 Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae McCoy, Karen D. Beis, P. Barbosa, Andrés Cuervo, J. J. Fraser, W. R. González-Solís, Jacob Jourdain, Elsa Poisbleau, Maud Quillfeldt, P. Leger, E. Dietrich, M. 2012 12 p. application/pdf http://hdl.handle.net/2445/61231 eng eng Inter-Research Reproducció del document publicat a: http://dx.doi.org/10.3354/meps09749 Marine Ecology Progress Series, 2012, vol. 459, p. 109-120 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) http://dx.doi.org/10.3354/meps09749 0171-8630 http://hdl.handle.net/2445/61231 612974 (c) Inter-Research, 2012 info:eu-repo/semantics/openAccess Ocells marins Antàrtida Genètica de poblacions Poblacions animals Paparres Paràsits Canvi climàtic Sea birds Antarctica Population Genetics Animal populations Ticks Parasites Climatic change info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftubarcepubl https://doi.org/10.3354/meps09749 2024-01-24T00:57:29Z Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to higher exploitation rates by the tick Ixodes uriae. Using data from 8 microsatellite markers and ticks from 6 Pygoscelis spp. colonies, we employed a population genetics approach to specifically test the hypothesis that I. uriae is expanding south-westward along the peninsula from the Subantarctic region. Contrary to expectations, tick genetic diversity was high within all colonies, and no remaining signal of colonisation events was evident. Although significant geographic genetic structure occurred among ticks from different colonies, these ectoparasites tended to belong to 2 major genetic groups, one found principally in south-western locations (Palmer Station area) and the other in more north-eastern areas (South Shetland Islands). More central colonies showed a mixture of ticks from each genetic group, suggesting that this area represents a hybridisation zone of ticks from 2 distinct origins. A subsequent clustering analysis, including ticks from 2 Subantarctic locations, did not reveal the source population for the northern peninsula group. Overall, our data refute the hypothesis of a recent south-westward expansion of I. uriae along the peninsula and suggest that this tick has been present at more southern latitudes for an extended period of time. Further studies on the distribution and genetic characteristics of this ectoparasite around Antarctica are now required to better understand the colonisation process and predict how changing environmental conditions may affect its presence and diversity in seabird colonies. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands Dipòsit Digital de la Universitat de Barcelona Antarctic Antarctic Peninsula South Shetland Islands Palmer Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Palmer-Station ENVELOPE(-64.050,-64.050,-64.770,-64.770) Marine Ecology Progress Series 459 109 120 |
institution |
Open Polar |
collection |
Dipòsit Digital de la Universitat de Barcelona |
op_collection_id |
ftubarcepubl |
language |
English |
topic |
Ocells marins Antàrtida Genètica de poblacions Poblacions animals Paparres Paràsits Canvi climàtic Sea birds Antarctica Population Genetics Animal populations Ticks Parasites Climatic change |
spellingShingle |
Ocells marins Antàrtida Genètica de poblacions Poblacions animals Paparres Paràsits Canvi climàtic Sea birds Antarctica Population Genetics Animal populations Ticks Parasites Climatic change McCoy, Karen D. Beis, P. Barbosa, Andrés Cuervo, J. J. Fraser, W. R. González-Solís, Jacob Jourdain, Elsa Poisbleau, Maud Quillfeldt, P. Leger, E. Dietrich, M. Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
topic_facet |
Ocells marins Antàrtida Genètica de poblacions Poblacions animals Paparres Paràsits Canvi climàtic Sea birds Antarctica Population Genetics Animal populations Ticks Parasites Climatic change |
description |
Recent observations on the western Antarctic Peninsula have suggested that changing climatic conditions may be increasing pressure on breeding seabirds due to higher exploitation rates by the tick Ixodes uriae. Using data from 8 microsatellite markers and ticks from 6 Pygoscelis spp. colonies, we employed a population genetics approach to specifically test the hypothesis that I. uriae is expanding south-westward along the peninsula from the Subantarctic region. Contrary to expectations, tick genetic diversity was high within all colonies, and no remaining signal of colonisation events was evident. Although significant geographic genetic structure occurred among ticks from different colonies, these ectoparasites tended to belong to 2 major genetic groups, one found principally in south-western locations (Palmer Station area) and the other in more north-eastern areas (South Shetland Islands). More central colonies showed a mixture of ticks from each genetic group, suggesting that this area represents a hybridisation zone of ticks from 2 distinct origins. A subsequent clustering analysis, including ticks from 2 Subantarctic locations, did not reveal the source population for the northern peninsula group. Overall, our data refute the hypothesis of a recent south-westward expansion of I. uriae along the peninsula and suggest that this tick has been present at more southern latitudes for an extended period of time. Further studies on the distribution and genetic characteristics of this ectoparasite around Antarctica are now required to better understand the colonisation process and predict how changing environmental conditions may affect its presence and diversity in seabird colonies. |
format |
Article in Journal/Newspaper |
author |
McCoy, Karen D. Beis, P. Barbosa, Andrés Cuervo, J. J. Fraser, W. R. González-Solís, Jacob Jourdain, Elsa Poisbleau, Maud Quillfeldt, P. Leger, E. Dietrich, M. |
author_facet |
McCoy, Karen D. Beis, P. Barbosa, Andrés Cuervo, J. J. Fraser, W. R. González-Solís, Jacob Jourdain, Elsa Poisbleau, Maud Quillfeldt, P. Leger, E. Dietrich, M. |
author_sort |
McCoy, Karen D. |
title |
Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
title_short |
Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
title_full |
Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
title_fullStr |
Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
title_full_unstemmed |
Population genetic structure and colonisation of the Western Antarctic Peninsula by the seabird tick Ixodes uriae |
title_sort |
population genetic structure and colonisation of the western antarctic peninsula by the seabird tick ixodes uriae |
publisher |
Inter-Research |
publishDate |
2012 |
url |
http://hdl.handle.net/2445/61231 |
long_lat |
ENVELOPE(-64.050,-64.050,-64.770,-64.770) ENVELOPE(-64.050,-64.050,-64.770,-64.770) |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands Palmer Station Palmer-Station |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands Palmer Station Palmer-Station |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica South Shetland Islands |
op_relation |
Reproducció del document publicat a: http://dx.doi.org/10.3354/meps09749 Marine Ecology Progress Series, 2012, vol. 459, p. 109-120 Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals) http://dx.doi.org/10.3354/meps09749 0171-8630 http://hdl.handle.net/2445/61231 612974 |
op_rights |
(c) Inter-Research, 2012 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps09749 |
container_title |
Marine Ecology Progress Series |
container_volume |
459 |
container_start_page |
109 |
op_container_end_page |
120 |
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1790609736147664896 |