Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera
Neogene planktonic foraminifera are among the most widely used microfossils in the study of tempo and mode of evolution. Comparisons of taxonomic rates between the two major clades in this group have shown that the nonspinose globorotaliids have undergone a significantly more rapid evolutionary turn...
Published in: | Molecular Phylogenetics and Evolution |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1998
|
Subjects: | |
Online Access: | https://archive-ouverte.unige.ch/unige:171664 |
id |
ftunivgeneve:oai:unige.ch:aou:unige:171664 |
---|---|
record_format |
openpolar |
spelling |
ftunivgeneve:oai:unige.ch:aou:unige:171664 2023-10-29T02:39:37+01:00 Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera De Vargas, Colomban Pawlowski, Jan Wojciech 1998 https://archive-ouverte.unige.ch/unige:171664 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1006/mpev.1998.0491 info:eu-repo/semantics/altIdentifier/pmid/9667994 https://archive-ouverte.unige.ch/unige:171664 unige:171664 info:eu-repo/semantics/restrictedAccess ISSN: 1055-7903 Molecular phylogenetics and evolution, vol. 9, no. 3 (1998) p. 463-469 info:eu-repo/classification/ddc/590 info:eu-repo/semantics/article JournalArticle Article scientifique info:eu-repo/semantics/publishedVersion 1998 ftunivgeneve https://doi.org/10.1006/mpev.1998.0491 2023-10-01T23:51:27Z Neogene planktonic foraminifera are among the most widely used microfossils in the study of tempo and mode of evolution. Comparisons of taxonomic rates between the two major clades in this group have shown that the nonspinose globorotaliids have undergone a significantly more rapid evolutionary turnover than the spinose globigerinids (S. M. Stanley et al. , 1988, Paleobiology 14, 235–249). In order to test if similar fluctuations are observed in molecular data, we have used different methods to calculate absolute and relative rates of substitutions based on 16 partial SSU rDNA sequences from representatives of both groups. According to our data, rates of substitution are relatively constant within the globigerinids with a mean value of 4.3 subst./site/109years, but vary in the globorotaliid clade with three species having a rate of about 1 subst./site/109years and two species evolving much faster with rates of more than 7 subst./site/109years. Assuming that the fast rates result from recent accelerations, the globorotaliids have basically much slower molecular evolutionary rates than the globigerinids, in opposition to the fossil data. Article in Journal/Newspaper Planktonic foraminifera Université de Genève: Archive ouverte UNIGE Molecular Phylogenetics and Evolution 9 3 463 469 |
institution |
Open Polar |
collection |
Université de Genève: Archive ouverte UNIGE |
op_collection_id |
ftunivgeneve |
language |
English |
topic |
info:eu-repo/classification/ddc/590 |
spellingShingle |
info:eu-repo/classification/ddc/590 De Vargas, Colomban Pawlowski, Jan Wojciech Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
topic_facet |
info:eu-repo/classification/ddc/590 |
description |
Neogene planktonic foraminifera are among the most widely used microfossils in the study of tempo and mode of evolution. Comparisons of taxonomic rates between the two major clades in this group have shown that the nonspinose globorotaliids have undergone a significantly more rapid evolutionary turnover than the spinose globigerinids (S. M. Stanley et al. , 1988, Paleobiology 14, 235–249). In order to test if similar fluctuations are observed in molecular data, we have used different methods to calculate absolute and relative rates of substitutions based on 16 partial SSU rDNA sequences from representatives of both groups. According to our data, rates of substitution are relatively constant within the globigerinids with a mean value of 4.3 subst./site/109years, but vary in the globorotaliid clade with three species having a rate of about 1 subst./site/109years and two species evolving much faster with rates of more than 7 subst./site/109years. Assuming that the fast rates result from recent accelerations, the globorotaliids have basically much slower molecular evolutionary rates than the globigerinids, in opposition to the fossil data. |
format |
Article in Journal/Newspaper |
author |
De Vargas, Colomban Pawlowski, Jan Wojciech |
author_facet |
De Vargas, Colomban Pawlowski, Jan Wojciech |
author_sort |
De Vargas, Colomban |
title |
Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
title_short |
Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
title_full |
Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
title_fullStr |
Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
title_full_unstemmed |
Molecular versus Taxonomic Rates of Evolution in Planktonic Foraminifera |
title_sort |
molecular versus taxonomic rates of evolution in planktonic foraminifera |
publishDate |
1998 |
url |
https://archive-ouverte.unige.ch/unige:171664 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 1055-7903 Molecular phylogenetics and evolution, vol. 9, no. 3 (1998) p. 463-469 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1006/mpev.1998.0491 info:eu-repo/semantics/altIdentifier/pmid/9667994 https://archive-ouverte.unige.ch/unige:171664 unige:171664 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1006/mpev.1998.0491 |
container_title |
Molecular Phylogenetics and Evolution |
container_volume |
9 |
container_issue |
3 |
container_start_page |
463 |
op_container_end_page |
469 |
_version_ |
1781066757657591808 |