Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage
Recent studies have shown that modes of evolution, namely directional trend, random walk, and stasis, vary across morphologic traits and over the geographic range of a taxon. If so, is it possible that our interpretation of evolutionary modes is actually driven by our selection of traits in a study?...
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The Paleontological Society
2018
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ftbioone:10.1017/pab.2017.23 2024-06-02T08:13:24+00:00 Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage Weimin Si William A. Berggren Marie-Pierre Aubry Weimin Si William A. Berggren Marie-Pierre Aubry world 2018-02-27 text/HTML https://doi.org/10.1017/pab.2017.23 en eng The Paleontological Society doi:10.1017/pab.2017.23 All rights reserved. https://doi.org/10.1017/pab.2017.23 Text 2018 ftbioone https://doi.org/10.1017/pab.2017.23 2024-05-07T00:48:07Z Recent studies have shown that modes of evolution, namely directional trend, random walk, and stasis, vary across morphologic traits and over the geographic range of a taxon. If so, is it possible that our interpretation of evolutionary modes is actually driven by our selection of traits in a study? In an attempt to answer this question, we have restudied the middle Miocene planktonic foraminifera Fohsella lineage, an iconic example of gradual morphologic evolution. In contrast to previous studies that have focused on the gross morphology as embodied by the edge view of tests, we analyze here multiple phenotypic traits chosen because their biologic and ecologic significance is well understood in living populations. We find that traits in the lineage did not evolve in concert. The timing and geographic pattern of changes in shape, coiling direction, size, and ecology were different. The evolution of this lineage is a mosaic combination of different evolutionary modes for different traits. We suggest that overemphasis on the evolution of some single trait, such as the edge-view outline, from narrow geographic ranges has significantly underestimated the dynamic evolutionary history of this group. Text Planktonic foraminifera BioOne Online Journals Paleobiology 44 2 263 272 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
Recent studies have shown that modes of evolution, namely directional trend, random walk, and stasis, vary across morphologic traits and over the geographic range of a taxon. If so, is it possible that our interpretation of evolutionary modes is actually driven by our selection of traits in a study? In an attempt to answer this question, we have restudied the middle Miocene planktonic foraminifera Fohsella lineage, an iconic example of gradual morphologic evolution. In contrast to previous studies that have focused on the gross morphology as embodied by the edge view of tests, we analyze here multiple phenotypic traits chosen because their biologic and ecologic significance is well understood in living populations. We find that traits in the lineage did not evolve in concert. The timing and geographic pattern of changes in shape, coiling direction, size, and ecology were different. The evolution of this lineage is a mosaic combination of different evolutionary modes for different traits. We suggest that overemphasis on the evolution of some single trait, such as the edge-view outline, from narrow geographic ranges has significantly underestimated the dynamic evolutionary history of this group. |
author2 |
Weimin Si William A. Berggren Marie-Pierre Aubry |
format |
Text |
author |
Weimin Si William A. Berggren Marie-Pierre Aubry |
spellingShingle |
Weimin Si William A. Berggren Marie-Pierre Aubry Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
author_facet |
Weimin Si William A. Berggren Marie-Pierre Aubry |
author_sort |
Weimin Si |
title |
Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
title_short |
Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
title_full |
Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
title_fullStr |
Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
title_full_unstemmed |
Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage |
title_sort |
mosaic evolution in the middle miocene planktonic foraminifera fohsella lineage |
publisher |
The Paleontological Society |
publishDate |
2018 |
url |
https://doi.org/10.1017/pab.2017.23 |
op_coverage |
world |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
https://doi.org/10.1017/pab.2017.23 |
op_relation |
doi:10.1017/pab.2017.23 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1017/pab.2017.23 |
container_title |
Paleobiology |
container_volume |
44 |
container_issue |
2 |
container_start_page |
263 |
op_container_end_page |
272 |
_version_ |
1800736890516668416 |