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...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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Online Access: | https://jlupub.ub.uni-giessen.de//handle/jlupub/266 https://doi.org/10.3354/meps09749 https://doi.org/10.22029/jlupub-213 |
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ftunivgiessen:oai:jlupub.ub.uni-giessen.de:jlupub/266 2023-12-24T10:11:20+01:00 Population genetic structure and colonisation of the western Antarctic Peninsula by the seabird tick Ixodes uriae McCoy, K.D. Beis, P. Barbosa, Andres Cuervo, J.J. Fraser, W.R. González-Solís, J. Jourdain, E. Poisbleau, M. Quillfeldt, Petra Léger, E. Dietrich, M. 2012 application/pdf https://jlupub.ub.uni-giessen.de//handle/jlupub/266 https://doi.org/10.3354/meps09749 https://doi.org/10.22029/jlupub-213 en eng https://doi.org/10.3354/meps09749 https://jlupub.ub.uni-giessen.de//handle/jlupub/266 http://dx.doi.org/10.22029/jlupub-213 Climate change Host−parasite interactions Invasion Pygoscelis Seabird population dynamics ddc:570 ddc:590 article 2012 ftunivgiessen https://doi.org/10.3354/meps0974910.22029/jlupub-213 2023-11-26T23:24:47Z 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 Justus-Liebig-Universität Giessen: JLUpub 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 |
Justus-Liebig-Universität Giessen: JLUpub |
op_collection_id |
ftunivgiessen |
language |
English |
topic |
Climate change Host−parasite interactions Invasion Pygoscelis Seabird population dynamics ddc:570 ddc:590 |
spellingShingle |
Climate change Host−parasite interactions Invasion Pygoscelis Seabird population dynamics ddc:570 ddc:590 McCoy, K.D. Beis, P. Barbosa, Andres Cuervo, J.J. Fraser, W.R. González-Solís, J. Jourdain, E. Poisbleau, M. Quillfeldt, Petra Léger, E. Dietrich, M. Population genetic structure and colonisation of the western Antarctic Peninsula by the seabird tick Ixodes uriae |
topic_facet |
Climate change Host−parasite interactions Invasion Pygoscelis Seabird population dynamics ddc:570 ddc:590 |
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, K.D. Beis, P. Barbosa, Andres Cuervo, J.J. Fraser, W.R. González-Solís, J. Jourdain, E. Poisbleau, M. Quillfeldt, Petra Léger, E. Dietrich, M. |
author_facet |
McCoy, K.D. Beis, P. Barbosa, Andres Cuervo, J.J. Fraser, W.R. González-Solís, J. Jourdain, E. Poisbleau, M. Quillfeldt, Petra Léger, E. Dietrich, M. |
author_sort |
McCoy, K.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 |
publishDate |
2012 |
url |
https://jlupub.ub.uni-giessen.de//handle/jlupub/266 https://doi.org/10.3354/meps09749 https://doi.org/10.22029/jlupub-213 |
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 |
https://doi.org/10.3354/meps09749 https://jlupub.ub.uni-giessen.de//handle/jlupub/266 http://dx.doi.org/10.22029/jlupub-213 |
op_doi |
https://doi.org/10.3354/meps0974910.22029/jlupub-213 |
container_title |
Marine Ecology Progress Series |
container_volume |
459 |
container_start_page |
109 |
op_container_end_page |
120 |
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1786163487377981440 |