solinot.blogg.se

BSL is a Fellow of the Canadian Institute for Advanced Research. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: This work was funded by Swedish Research Council Linne grant to OFP the Swiss NSF project PA00P3 145374 to TJH the National Science and Engineering Research Council of Canada (NSERC 283091-09) and the Tula Foundation's Centre for Microbial Diversity and Evolution at the University of British Columbia. Received: JanuAccepted: MaPublished: April 24, 2014Ĭopyright: © 2014 Fiz-Palacios et al. PLoS ONE 9(4):Įditor: Gareth Bloomfield, MRC Laboratory of Molecular Biology, United Kingdom papilio, the recent diversification of Sphagnum mosses, and the establishment of peatlands.Ĭitation: Fiz-Palacios O, Leander BS, Heger TJ (2014) Old Lineages in a New Ecosystem: Diversification of Arcellinid Amoebae (Amoebozoa) and Peatland Mosses. papilio species complex demonstrated a correlation between the recent diversification of H. However, an extensive molecular phylogenetic analysis of distinct clades within H. Overall, Sphagnum and the Hyalospheniidae exhibit different patterns of diversification. We found that the diversification of core arcellinids occurred during the Phanerozoic, which is congruent with most arcellinid fossils but not with the oldest known amoebozoan fossil (i.e. Here, we reconstruct divergence times in arcellinid testate amoebae after selecting several fossils for clock calibrations and then infer whether or not arcellinids followed a pattern of diversification that parallels the pattern described for Sphagnum. Arcellinids occur in a range of terrestrial, freshwater and even brackish habitats however, many arcellinid morphospecies such as Hyalosphenia papilio are particularly abundant in Sphagnum-dominated peatlands, a relatively new ecosystem that appeared during the diversification of Sphagnum species in the Miocene (5–20 Myr ago). Arcellinid testate amoebae (Amoebozoa) form a group of free-living microbial eukaryotes with one of the oldest fossil records known, yet several aspects of their evolutionary history remain poorly understood.