Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star
Poecilogony, or multiple developmental modes in a single species, is exceedingly rare. Several species described as poecilogenous were later demonstrated to be multiple (cryptic) species with a single developmental mode. The Southern Ocean is known to harbor a high proportion of brooders (Thorson...
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ftdans:oai:easy.dans.knaw.nl:easy-dataset:127650 2023-07-02T03:30:11+02:00 Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star Jossart, Quentin Sands, Chester Sewell, Mary A. 2019-04-24T18:32:49.000+02:00 http://nbn-resolving.org/urn:nbn:nl:ui:13-en-79vw https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:127650 unknown doi:10.5061/dryad.n7s0g10/1 doi:10.1038/s41437-019-0228-9 http://nbn-resolving.org/urn:nbn:nl:ui:13-en-79vw doi:10.5061/dryad.n7s0g10 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:127650 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 2019 ftdans https://doi.org/10.5061/dryad.n7s0g10/110.1038/s41437-019-0228-910.5061/dryad.n7s0g10 2023-06-13T13:08:57Z Poecilogony, or multiple developmental modes in a single species, is exceedingly rare. Several species described as poecilogenous were later demonstrated to be multiple (cryptic) species with a single developmental mode. The Southern Ocean is known to harbor a high proportion of brooders (Thorson's Rule) but with an increasing number of counter examples over recent years. Here we evaluated poecilogony versus crypticism in the brittle star Astrotoma agassizii across the Southern Ocean. This species was initially described from South America as a brooder before some pelagic stages were identified in Antarctica. Reproductive and mitochondrial data were combined to unravel geographic and genetic variation of developmental modes. Our results indicate that A. agassizii is composed of seven well supported and deeply divergent clades (I: Antarctica and South Georgia; II: South Georgia and Subantarctic locations including Kerguelen, Patagonian shelf, and New Zealand; III-VI-VII: Patagonian shelf, IV-V: South Georgia). Two of these clades demonstrated strong size dimorphism when in sympatry and can be linked to differing developmental modes (Clade V: dwarf brooder versus Clade I: giant broadcaster). Based on their restricted geographic distributions and on previous studies, it is likely that Clades III-VI-VII are brooders. Clade II is composed of different morphological species, A. agassizii and A. drachi, the latter originally used as the outgroup. By integrating morphology, reproductive and molecular data we conclude that the variation identified in A. agassizii is best described as crypticism rather than poecilogony. Other/Unknown Material Antarc* Antarctic Antarctica Southern Ocean Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) Antarctic Kerguelen New Zealand Southern Ocean |
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Open Polar |
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Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen) |
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ftdans |
language |
unknown |
topic |
Life sciences medicine and health care |
spellingShingle |
Life sciences medicine and health care Jossart, Quentin Sands, Chester Sewell, Mary A. Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
topic_facet |
Life sciences medicine and health care |
description |
Poecilogony, or multiple developmental modes in a single species, is exceedingly rare. Several species described as poecilogenous were later demonstrated to be multiple (cryptic) species with a single developmental mode. The Southern Ocean is known to harbor a high proportion of brooders (Thorson's Rule) but with an increasing number of counter examples over recent years. Here we evaluated poecilogony versus crypticism in the brittle star Astrotoma agassizii across the Southern Ocean. This species was initially described from South America as a brooder before some pelagic stages were identified in Antarctica. Reproductive and mitochondrial data were combined to unravel geographic and genetic variation of developmental modes. Our results indicate that A. agassizii is composed of seven well supported and deeply divergent clades (I: Antarctica and South Georgia; II: South Georgia and Subantarctic locations including Kerguelen, Patagonian shelf, and New Zealand; III-VI-VII: Patagonian shelf, IV-V: South Georgia). Two of these clades demonstrated strong size dimorphism when in sympatry and can be linked to differing developmental modes (Clade V: dwarf brooder versus Clade I: giant broadcaster). Based on their restricted geographic distributions and on previous studies, it is likely that Clades III-VI-VII are brooders. Clade II is composed of different morphological species, A. agassizii and A. drachi, the latter originally used as the outgroup. By integrating morphology, reproductive and molecular data we conclude that the variation identified in A. agassizii is best described as crypticism rather than poecilogony. |
author |
Jossart, Quentin Sands, Chester Sewell, Mary A. |
author_facet |
Jossart, Quentin Sands, Chester Sewell, Mary A. |
author_sort |
Jossart, Quentin |
title |
Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
title_short |
Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
title_full |
Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
title_fullStr |
Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
title_full_unstemmed |
Data from: Dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an Antarctic brittle star |
title_sort |
data from: dwarf brooder versus giant broadcaster: combining genetic and reproductive data to unravel cryptic diversity in an antarctic brittle star |
publishDate |
2019 |
url |
http://nbn-resolving.org/urn:nbn:nl:ui:13-en-79vw https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:127650 |
geographic |
Antarctic Kerguelen New Zealand Southern Ocean |
geographic_facet |
Antarctic Kerguelen New Zealand Southern Ocean |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
doi:10.5061/dryad.n7s0g10/1 doi:10.1038/s41437-019-0228-9 http://nbn-resolving.org/urn:nbn:nl:ui:13-en-79vw doi:10.5061/dryad.n7s0g10 https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:127650 |
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.n7s0g10/110.1038/s41437-019-0228-910.5061/dryad.n7s0g10 |
_version_ |
1770274426375372800 |