Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean
Hybridization between closely related species has been documented across a wide range of taxa but has not been well studied in elasmobranchs. Hammerhead sharks have drawn global conservation concern because they experience some of the highest mortality rates among sharks when interacting with fisher...
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The Royal Society
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ftdatacite:10.6084/m9.figshare.7892900.v1 2023-05-15T17:32:27+02:00 Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean Barker, Amanda M. Adams, Douglas H. Driggers, William B. Frazier, Bryan S. Portnoy, David S. 2019 https://dx.doi.org/10.6084/m9.figshare.7892900.v1 https://rs.figshare.com/articles/Media_Summary_from_Hybridization_between_sympatric_hammerhead_sharks_in_the_western_North_Atlantic_Ocean/7892900/1 unknown The Royal Society https://dx.doi.org/10.1098/rsbl.2019.0004 https://dx.doi.org/10.6084/m9.figshare.7892900 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Evolutionary Biology FOS Biological sciences Ecology Text article-journal Journal contribution ScholarlyArticle 2019 ftdatacite https://doi.org/10.6084/m9.figshare.7892900.v1 https://doi.org/10.1098/rsbl.2019.0004 https://doi.org/10.6084/m9.figshare.7892900 2021-11-05T12:55:41Z Hybridization between closely related species has been documented across a wide range of taxa but has not been well studied in elasmobranchs. Hammerhead sharks have drawn global conservation concern because they experience some of the highest mortality rates among sharks when interacting with fisheries. Here we report on the detection of hybrids between the globally distributed scalloped hammerhead ( Sphyrna lewini ) and recently described Carolina hammerhead ( S. gilberti ) which are only known from the western Atlantic Ocean. Using a genomics approach, 10 first-generation hybrids and 15–17 backcrosses were detected from 554 individuals. The identification of backcrosses demonstrates hybrids are viable, and all backcrosses but one involved a scalloped hammerhead. All hybrids but one possessed Carolina hammerhead mtDNA, indicating sex-biased gene flow between species. Repeated hybridization and backcrossing with scalloped hammerheads could lead to the loss of endemic Carolina hammerheads. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Evolutionary Biology FOS Biological sciences Ecology |
spellingShingle |
Evolutionary Biology FOS Biological sciences Ecology Barker, Amanda M. Adams, Douglas H. Driggers, William B. Frazier, Bryan S. Portnoy, David S. Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
topic_facet |
Evolutionary Biology FOS Biological sciences Ecology |
description |
Hybridization between closely related species has been documented across a wide range of taxa but has not been well studied in elasmobranchs. Hammerhead sharks have drawn global conservation concern because they experience some of the highest mortality rates among sharks when interacting with fisheries. Here we report on the detection of hybrids between the globally distributed scalloped hammerhead ( Sphyrna lewini ) and recently described Carolina hammerhead ( S. gilberti ) which are only known from the western Atlantic Ocean. Using a genomics approach, 10 first-generation hybrids and 15–17 backcrosses were detected from 554 individuals. The identification of backcrosses demonstrates hybrids are viable, and all backcrosses but one involved a scalloped hammerhead. All hybrids but one possessed Carolina hammerhead mtDNA, indicating sex-biased gene flow between species. Repeated hybridization and backcrossing with scalloped hammerheads could lead to the loss of endemic Carolina hammerheads. |
format |
Text |
author |
Barker, Amanda M. Adams, Douglas H. Driggers, William B. Frazier, Bryan S. Portnoy, David S. |
author_facet |
Barker, Amanda M. Adams, Douglas H. Driggers, William B. Frazier, Bryan S. Portnoy, David S. |
author_sort |
Barker, Amanda M. |
title |
Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
title_short |
Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
title_full |
Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
title_fullStr |
Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
title_full_unstemmed |
Media Summary from Hybridization between sympatric hammerhead sharks in the western North Atlantic Ocean |
title_sort |
media summary from hybridization between sympatric hammerhead sharks in the western north atlantic ocean |
publisher |
The Royal Society |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.7892900.v1 https://rs.figshare.com/articles/Media_Summary_from_Hybridization_between_sympatric_hammerhead_sharks_in_the_western_North_Atlantic_Ocean/7892900/1 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1098/rsbl.2019.0004 https://dx.doi.org/10.6084/m9.figshare.7892900 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.7892900.v1 https://doi.org/10.1098/rsbl.2019.0004 https://doi.org/10.6084/m9.figshare.7892900 |
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1766130590487150592 |