On the origin and trigger of the notothenioid adapted radiation
Adaptive radiation is usually triggered by ecological opportunity, arising through (i) the colonization of a new habitat by its progenitor; (ii) the extinction of competitors; or (iii) the emergence of an evolutionary key innovation in the ancestral lineage. Support for the key innovation hypothesis...
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ftopenagrar:oai:www.openagrar.de:timport_mods_00013666 2023-05-15T13:56:19+02:00 On the origin and trigger of the notothenioid adapted radiation Matschiner, Michael Hanel, Reinhold Salzburger, Walter 2011 https://doi.org/10.1371/journal.pone.0018911 https://www.openagrar.de/receive/timport_mods_00013666 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00013666/dn048761.pdf http://www.plosone.org/article/fetchObjectAttachment.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0018911&representation=PDF eng eng https://doi.org/10.1371/journal.pone.0018911 https://www.openagrar.de/receive/timport_mods_00013666 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00013666/dn048761.pdf http://www.plosone.org/article/fetchObjectAttachment.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0018911&representation=PDF https://creativecommons.org/licenses/by/3.0/ public info:eu-repo/semantics/openAccess CC-BY Text ddc:630 article Text 2011 ftopenagrar https://doi.org/10.1371/journal.pone.0018911 2022-05-01T23:06:40Z Adaptive radiation is usually triggered by ecological opportunity, arising through (i) the colonization of a new habitat by its progenitor; (ii) the extinction of competitors; or (iii) the emergence of an evolutionary key innovation in the ancestral lineage. Support for the key innovation hypothesis is scarce, however, even in textbook examples of adaptive radiation. Antifreeze glycoproteins (AFGPs) have been proposed as putative key innovation for the adaptive radiation of notothenioid fishes in the ice-cold waters of Antarctica. A crucial prerequisite for this assumption is the concurrence of the notothenioid radiation with the onset of Antarctic sea ice conditions. Here, we use a fossil-calibrated multi-marker phylogeny of nothothenioid and related acanthomorph fishes to date AFGP emergence and the notothenioid radiation. All timeconstraints are cross-validated to assess their reliability resulting in six powerful calibration points. We find that the notothenioid radiation began near the Oligocene-Miocene transition, which coincides with the increasing presence of Antarctic sea ice. Divergence dates of notothenioids are thus consistent with the key innovation hypothesis of AFGP. Early notothenioid divergences are furthermore congruent with vicariant speciation and the breakup of Gondwana. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice OpenAgrar (OA) Antarctic PLoS ONE 6 4 e18911 |
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Text ddc:630 Matschiner, Michael Hanel, Reinhold Salzburger, Walter On the origin and trigger of the notothenioid adapted radiation |
topic_facet |
Text ddc:630 |
description |
Adaptive radiation is usually triggered by ecological opportunity, arising through (i) the colonization of a new habitat by its progenitor; (ii) the extinction of competitors; or (iii) the emergence of an evolutionary key innovation in the ancestral lineage. Support for the key innovation hypothesis is scarce, however, even in textbook examples of adaptive radiation. Antifreeze glycoproteins (AFGPs) have been proposed as putative key innovation for the adaptive radiation of notothenioid fishes in the ice-cold waters of Antarctica. A crucial prerequisite for this assumption is the concurrence of the notothenioid radiation with the onset of Antarctic sea ice conditions. Here, we use a fossil-calibrated multi-marker phylogeny of nothothenioid and related acanthomorph fishes to date AFGP emergence and the notothenioid radiation. All timeconstraints are cross-validated to assess their reliability resulting in six powerful calibration points. We find that the notothenioid radiation began near the Oligocene-Miocene transition, which coincides with the increasing presence of Antarctic sea ice. Divergence dates of notothenioids are thus consistent with the key innovation hypothesis of AFGP. Early notothenioid divergences are furthermore congruent with vicariant speciation and the breakup of Gondwana. |
format |
Article in Journal/Newspaper |
author |
Matschiner, Michael Hanel, Reinhold Salzburger, Walter |
author_facet |
Matschiner, Michael Hanel, Reinhold Salzburger, Walter |
author_sort |
Matschiner, Michael |
title |
On the origin and trigger of the notothenioid adapted radiation |
title_short |
On the origin and trigger of the notothenioid adapted radiation |
title_full |
On the origin and trigger of the notothenioid adapted radiation |
title_fullStr |
On the origin and trigger of the notothenioid adapted radiation |
title_full_unstemmed |
On the origin and trigger of the notothenioid adapted radiation |
title_sort |
on the origin and trigger of the notothenioid adapted radiation |
publishDate |
2011 |
url |
https://doi.org/10.1371/journal.pone.0018911 https://www.openagrar.de/receive/timport_mods_00013666 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00013666/dn048761.pdf http://www.plosone.org/article/fetchObjectAttachment.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0018911&representation=PDF |
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Antarctic |
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Antarctic |
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Antarc* Antarctic Antarctica Sea ice |
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Antarc* Antarctic Antarctica Sea ice |
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https://doi.org/10.1371/journal.pone.0018911 https://www.openagrar.de/receive/timport_mods_00013666 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00013666/dn048761.pdf http://www.plosone.org/article/fetchObjectAttachment.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0018911&representation=PDF |
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https://creativecommons.org/licenses/by/3.0/ public info:eu-repo/semantics/openAccess |
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CC-BY |
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https://doi.org/10.1371/journal.pone.0018911 |
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e18911 |
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