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Lifestyle and ice: the relationship between ecological specialization and response to Pleistocene climate change
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SYSNO ASEP 0455152 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Lifestyle and ice: the relationship between ecological specialization and response to Pleistocene climate change Author(s) Kašparová, E. (CZ)
Van de Putte, A. P. (BE)
Marshall, C. (NZ)
Janko, Karel (UBO-W) RIDNumber of authors 4 Source Title PLoS ONE. - : Public Library of Science - ISSN 1932-6203
Roč. 10, č. 11 (2015), e0138766Number of pages 22 s. Language eng - English Country US - United States Keywords estimating demographic history ; human mitochondrial DNA ; last glacial maximum Subject RIV EH - Ecology, Behaviour R&D Projects GBP505/12/G112 GA ČR - Czech Science Foundation (CSF) Institutional support UBO-W - RVO:68081766 UT WOS 000364298400004 EID SCOPUS 84951163232 DOI 10.1371/journal.pone.0138766 Annotation 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. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2016
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