Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer
Previous genetic studies of extant planktonic foraminifera have provided evidence that the traditional, strictly morphological definition of species in these organisms underestimates their biodiversity. Here, we report the first case where this pattern is reversed. The modern (sub)tropical species p...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:81534 2023-07-02T03:33:29+02:00 Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer Quillevere, Frederic André, Aurore Weiner, Agnes Aurahs, Ralf Morard, Raphaël Douady, Christophe J. de Garidel-Thoron, Thibault Escarguel, Gilles de Vargas, Colomban Kucera, Michal 2012-07-25T22:44:30.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-xw-j6lf https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:81534 unknown doi:10.5061/dryad.rb06j/1 doi:10.1666/0094-8373-39.1.21 http://nbn-resolving.org/urn:nbn:nl:ui:13-xw-j6lf doi:10.5061/dryad.rb06j https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:81534 OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf Life sciences medicine and health care 2012 ftdans https://doi.org/10.5061/dryad.rb06j/110.1666/0094-8373-39.1.2110.5061/dryad.rb06j 2023-06-13T13:02:07Z Previous genetic studies of extant planktonic foraminifera have provided evidence that the traditional, strictly morphological definition of species in these organisms underestimates their biodiversity. Here, we report the first case where this pattern is reversed. The modern (sub)tropical species plexus Globigerinoides sacculifer is characterized by large morphological variability, which has led to the proliferation of taxonomic names attributed to morphological end-members within the plexus. In order to clarify the taxonomic status of its morphotypes and to investigate the genetic connectivity among its currently partly disjunct (sub)tropical populations, we carried out a global survey of two ribosomal RNA regions (SSU and ITS-1) in all recent morphotypes of the plexus collected throughout (sub)tropical surface waters of the global ocean. Unexpectedly, we find an extremely reduced genetic variation within the plexus and no correlation between genetic and morphological divergence, suggesting taxonomical overinterpretation. The genetic homogeneity within the morphospecies is unexpected, considering its partly disjunct range in the (sub)tropical Atlantic and Indo-Pacific and its old age (early Miocene). A sequence variant in the rapidly evolving ITS-1 region indicates the existence of an exclusively Atlantic haplotype, which suggests an episode of relatively recent (last glacial) isolation, followed by subsequent resumption of unidirectional gene flow from the Indo-Pacific into the Atlantic. This is the first example in planktonic foraminifera where the morphological variability in a morphospecies exceeds its rDNA genetic variability. Such evidence for inconsistent scaling of morphological and genetic diversity in planktonic foraminifera could complicate the interpretation of evolutionary patterns in their fossil record. Other/Unknown Material Planktonic foraminifera Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Pacific |
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Open Polar |
collection |
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
op_collection_id |
ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Quillevere, Frederic André, Aurore Weiner, Agnes Aurahs, Ralf Morard, Raphaël Douady, Christophe J. de Garidel-Thoron, Thibault Escarguel, Gilles de Vargas, Colomban Kucera, Michal Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
topic_facet |
Life sciences medicine and health care |
description |
Previous genetic studies of extant planktonic foraminifera have provided evidence that the traditional, strictly morphological definition of species in these organisms underestimates their biodiversity. Here, we report the first case where this pattern is reversed. The modern (sub)tropical species plexus Globigerinoides sacculifer is characterized by large morphological variability, which has led to the proliferation of taxonomic names attributed to morphological end-members within the plexus. In order to clarify the taxonomic status of its morphotypes and to investigate the genetic connectivity among its currently partly disjunct (sub)tropical populations, we carried out a global survey of two ribosomal RNA regions (SSU and ITS-1) in all recent morphotypes of the plexus collected throughout (sub)tropical surface waters of the global ocean. Unexpectedly, we find an extremely reduced genetic variation within the plexus and no correlation between genetic and morphological divergence, suggesting taxonomical overinterpretation. The genetic homogeneity within the morphospecies is unexpected, considering its partly disjunct range in the (sub)tropical Atlantic and Indo-Pacific and its old age (early Miocene). A sequence variant in the rapidly evolving ITS-1 region indicates the existence of an exclusively Atlantic haplotype, which suggests an episode of relatively recent (last glacial) isolation, followed by subsequent resumption of unidirectional gene flow from the Indo-Pacific into the Atlantic. This is the first example in planktonic foraminifera where the morphological variability in a morphospecies exceeds its rDNA genetic variability. Such evidence for inconsistent scaling of morphological and genetic diversity in planktonic foraminifera could complicate the interpretation of evolutionary patterns in their fossil record. |
author |
Quillevere, Frederic André, Aurore Weiner, Agnes Aurahs, Ralf Morard, Raphaël Douady, Christophe J. de Garidel-Thoron, Thibault Escarguel, Gilles de Vargas, Colomban Kucera, Michal |
author_facet |
Quillevere, Frederic André, Aurore Weiner, Agnes Aurahs, Ralf Morard, Raphaël Douady, Christophe J. de Garidel-Thoron, Thibault Escarguel, Gilles de Vargas, Colomban Kucera, Michal |
author_sort |
Quillevere, Frederic |
title |
Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
title_short |
Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
title_full |
Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
title_fullStr |
Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
title_full_unstemmed |
Data from: The cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer Globigerinoides sacculifer |
title_sort |
data from: the cryptic and the apparent reversed: lack of genetic differentiation within the morphologically diverse plexus of the planktonic foraminifer globigerinoides sacculifer |
publishDate |
2012 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-xw-j6lf https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:81534 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
doi:10.5061/dryad.rb06j/1 doi:10.1666/0094-8373-39.1.21 http://nbn-resolving.org/urn:nbn:nl:ui:13-xw-j6lf doi:10.5061/dryad.rb06j https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:81534 |
op_rights |
OPEN_ACCESS: The data are archived in Easy, they are accessible elsewhere through the DOI https://dans.knaw.nl/en/about/organisation-and-policy/legal-information/DANSLicence.pdf |
op_doi |
https://doi.org/10.5061/dryad.rb06j/110.1666/0094-8373-39.1.2110.5061/dryad.rb06j |
_version_ |
1770273472432308224 |