Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change.
Major climatic changes in the Pleistocene had significant effects on marine organisms and the environments in which they lived. The presence of divergent patterns of demographic history even among phylogenetically closely-related species sharing climatic changes raises questions as to the respective...
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ftdoajarticles:oai:doaj.org/article:6cfa047ad4be47c5b187a624d824c7f4 2023-05-15T13:33:03+02:00 Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. Eva Kašparová Anton P Van de Putte Craig Marshall Karel Janko 2015-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0138766 https://doaj.org/article/6cfa047ad4be47c5b187a624d824c7f4 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4636791?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0138766 https://doaj.org/article/6cfa047ad4be47c5b187a624d824c7f4 PLoS ONE, Vol 10, Iss 11, p e0138766 (2015) Medicine R Science Q article 2015 ftdoajarticles https://doi.org/10.1371/journal.pone.0138766 2022-12-31T07:29:54Z Major climatic changes in the Pleistocene had significant effects on marine organisms and the environments in which they lived. The presence of divergent patterns of demographic history even among phylogenetically closely-related species sharing climatic changes raises questions as to the respective influence of species-specific traits on population structure. In this work we tested whether the lifestyle of Antarctic notothenioid benthic and pelagic fish species from the Southern Ocean influenced the concerted population response to Pleistocene climatic fluctuations. This was done by a comparative analysis of sequence variation at the cyt b and S7 loci in nine newly sequenced and four re-analysed species. We found that all species underwent more or less intensive changes in population size but we also found consistent differences between demographic histories of pelagic and benthic species. Contemporary pelagic populations are significantly more genetically diverse and bear traces of older demographic expansions than less diverse benthic species that show evidence of more recent population expansions. Our findings suggest that the lifestyles of different species have strong influences on their responses to the same environmental events. Our data, in conjunction with previous studies showing a constant diversification tempo of these species during the Pleistocene, support the hypothesis that Pleistocene glaciations had a smaller effect on pelagic species than on benthic species whose survival may have relied upon ephemeral refugia in shallow shelf waters. These findings suggest that the interaction between lifestyle and environmental changes should be considered in genetic analyses. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean PLOS ONE 10 11 e0138766 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Eva Kašparová Anton P Van de Putte Craig Marshall Karel Janko Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
topic_facet |
Medicine R Science Q |
description |
Major climatic changes in the Pleistocene had significant effects on marine organisms and the environments in which they lived. The presence of divergent patterns of demographic history even among phylogenetically closely-related species sharing climatic changes raises questions as to the respective influence of species-specific traits on population structure. In this work we tested whether the lifestyle of Antarctic notothenioid benthic and pelagic fish species from the Southern Ocean influenced the concerted population response to Pleistocene climatic fluctuations. This was done by a comparative analysis of sequence variation at the cyt b and S7 loci in nine newly sequenced and four re-analysed species. We found that all species underwent more or less intensive changes in population size but we also found consistent differences between demographic histories of pelagic and benthic species. Contemporary pelagic populations are significantly more genetically diverse and bear traces of older demographic expansions than less diverse benthic species that show evidence of more recent population expansions. Our findings suggest that the lifestyles of different species have strong influences on their responses to the same environmental events. Our data, in conjunction with previous studies showing a constant diversification tempo of these species during the Pleistocene, support the hypothesis that Pleistocene glaciations had a smaller effect on pelagic species than on benthic species whose survival may have relied upon ephemeral refugia in shallow shelf waters. These findings suggest that the interaction between lifestyle and environmental changes should be considered in genetic analyses. |
format |
Article in Journal/Newspaper |
author |
Eva Kašparová Anton P Van de Putte Craig Marshall Karel Janko |
author_facet |
Eva Kašparová Anton P Van de Putte Craig Marshall Karel Janko |
author_sort |
Eva Kašparová |
title |
Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
title_short |
Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
title_full |
Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
title_fullStr |
Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
title_full_unstemmed |
Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. |
title_sort |
lifestyle and ice: the relationship between ecological specialization and response to pleistocene climate change. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2015 |
url |
https://doi.org/10.1371/journal.pone.0138766 https://doaj.org/article/6cfa047ad4be47c5b187a624d824c7f4 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
PLoS ONE, Vol 10, Iss 11, p e0138766 (2015) |
op_relation |
http://europepmc.org/articles/PMC4636791?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0138766 https://doaj.org/article/6cfa047ad4be47c5b187a624d824c7f4 |
op_doi |
https://doi.org/10.1371/journal.pone.0138766 |
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PLOS ONE |
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10 |
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11 |
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e0138766 |
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