Connectivity in the deep: phylogeography of the velvet belly lanternshark
The velvet belly lanternshark, Etmopterus spinax, is a deep-sea bioluminescent squaloid shark, found predominantly in the Northeast Atlantic and Mediterranean Sea. It has been exposed to relatively high levels of mortality associated with by-catch in some regions. Its late maturity and low fecundity...
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:145727 2023-05-15T17:41:19+02:00 Connectivity in the deep: phylogeography of the velvet belly lanternshark Gubili, Chrysoula Macleod, Kirsty Perry, William Hanel, Pia Batzakas, Ioannis Farrell, Edward D. Lynghammar, Arve Mancusi, Cecilia Mariani, Stefano Menezes, Gui M. Neat, Francis Scarcella, Giuseppe Griffiths, Andrew M. 2016-09-30 https://orca.cardiff.ac.uk/id/eprint/145727/ https://doi.org/10.1016/j.dsr.2016.07.002 unknown Elsevier Gubili, Chrysoula, Macleod, Kirsty, Perry, William https://orca.cardiff.ac.uk/view/cardiffauthors/A2641378R.html, Hanel, Pia, Batzakas, Ioannis, Farrell, Edward D., Lynghammar, Arve, Mancusi, Cecilia, Mariani, Stefano, Menezes, Gui M., Neat, Francis, Scarcella, Giuseppe and Griffiths, Andrew M. 2016. Connectivity in the deep: phylogeography of the velvet belly lanternshark. Deep Sea Research Part I: Oceanographic Research Papers 115 , pp. 233-239. 10.1016/j.dsr.2016.07.002 https://doi.org/10.1016/j.dsr.2016.07.002 doi:10.1016/j.dsr.2016.07.002 Article PeerReviewed 2016 ftunivcardiff https://doi.org/10.1016/j.dsr.2016.07.002 2022-09-25T21:20:21Z The velvet belly lanternshark, Etmopterus spinax, is a deep-sea bioluminescent squaloid shark, found predominantly in the Northeast Atlantic and Mediterranean Sea. It has been exposed to relatively high levels of mortality associated with by-catch in some regions. Its late maturity and low fecundity potentially renders it vulnerable to over-exploitation, although little remains known about processes of connectivity between key habitats/regions. This study utilised DNA sequencing of partial regions of the mitochondrial control region and nuclear ribosomal internal transcribed spacer 2 to investigate population structure and phylogeography of this species across the Northeast Atlantic and Mediterranean Basin. Despite the inclusion of samples from the range edges or remote locations, no evidence of significant population structure was detected. An important exception was identified using the control region sequence, with much greater (and statistically significant) levels of genetic differentiation between the Mediterranean and Atlantic. This suggests that the Strait of Gibraltar may represent an important bathymetric barrier, separating regions with very low levels of female dispersal. Bayesian estimation of divergence time also places the separation between the Mediterranean and Atlantic lineages within the last 100,000 years, presumably connected with perturbations during the last Glacial Period. These results demonstrate population subdivision at a much smaller geographic distance than has generally been identified in previous work on deep-sea sharks. This highlights a very significant role for shallow bathymetry in promoting genetic differentiation in deepwater taxa. It acts as an important exception to a general paradigm of marine species being connected by high levels of gene-flow, representing single stocks over large scales. It may also have significant implications for the fisheries management of this species. Article in Journal/Newspaper Northeast Atlantic Cardiff University: ORCA (Online Research @ Cardiff) Deep Sea Research Part I: Oceanographic Research Papers 115 233 239 |
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Cardiff University: ORCA (Online Research @ Cardiff) |
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ftunivcardiff |
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unknown |
description |
The velvet belly lanternshark, Etmopterus spinax, is a deep-sea bioluminescent squaloid shark, found predominantly in the Northeast Atlantic and Mediterranean Sea. It has been exposed to relatively high levels of mortality associated with by-catch in some regions. Its late maturity and low fecundity potentially renders it vulnerable to over-exploitation, although little remains known about processes of connectivity between key habitats/regions. This study utilised DNA sequencing of partial regions of the mitochondrial control region and nuclear ribosomal internal transcribed spacer 2 to investigate population structure and phylogeography of this species across the Northeast Atlantic and Mediterranean Basin. Despite the inclusion of samples from the range edges or remote locations, no evidence of significant population structure was detected. An important exception was identified using the control region sequence, with much greater (and statistically significant) levels of genetic differentiation between the Mediterranean and Atlantic. This suggests that the Strait of Gibraltar may represent an important bathymetric barrier, separating regions with very low levels of female dispersal. Bayesian estimation of divergence time also places the separation between the Mediterranean and Atlantic lineages within the last 100,000 years, presumably connected with perturbations during the last Glacial Period. These results demonstrate population subdivision at a much smaller geographic distance than has generally been identified in previous work on deep-sea sharks. This highlights a very significant role for shallow bathymetry in promoting genetic differentiation in deepwater taxa. It acts as an important exception to a general paradigm of marine species being connected by high levels of gene-flow, representing single stocks over large scales. It may also have significant implications for the fisheries management of this species. |
format |
Article in Journal/Newspaper |
author |
Gubili, Chrysoula Macleod, Kirsty Perry, William Hanel, Pia Batzakas, Ioannis Farrell, Edward D. Lynghammar, Arve Mancusi, Cecilia Mariani, Stefano Menezes, Gui M. Neat, Francis Scarcella, Giuseppe Griffiths, Andrew M. |
spellingShingle |
Gubili, Chrysoula Macleod, Kirsty Perry, William Hanel, Pia Batzakas, Ioannis Farrell, Edward D. Lynghammar, Arve Mancusi, Cecilia Mariani, Stefano Menezes, Gui M. Neat, Francis Scarcella, Giuseppe Griffiths, Andrew M. Connectivity in the deep: phylogeography of the velvet belly lanternshark |
author_facet |
Gubili, Chrysoula Macleod, Kirsty Perry, William Hanel, Pia Batzakas, Ioannis Farrell, Edward D. Lynghammar, Arve Mancusi, Cecilia Mariani, Stefano Menezes, Gui M. Neat, Francis Scarcella, Giuseppe Griffiths, Andrew M. |
author_sort |
Gubili, Chrysoula |
title |
Connectivity in the deep: phylogeography of the velvet belly lanternshark |
title_short |
Connectivity in the deep: phylogeography of the velvet belly lanternshark |
title_full |
Connectivity in the deep: phylogeography of the velvet belly lanternshark |
title_fullStr |
Connectivity in the deep: phylogeography of the velvet belly lanternshark |
title_full_unstemmed |
Connectivity in the deep: phylogeography of the velvet belly lanternshark |
title_sort |
connectivity in the deep: phylogeography of the velvet belly lanternshark |
publisher |
Elsevier |
publishDate |
2016 |
url |
https://orca.cardiff.ac.uk/id/eprint/145727/ https://doi.org/10.1016/j.dsr.2016.07.002 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Gubili, Chrysoula, Macleod, Kirsty, Perry, William https://orca.cardiff.ac.uk/view/cardiffauthors/A2641378R.html, Hanel, Pia, Batzakas, Ioannis, Farrell, Edward D., Lynghammar, Arve, Mancusi, Cecilia, Mariani, Stefano, Menezes, Gui M., Neat, Francis, Scarcella, Giuseppe and Griffiths, Andrew M. 2016. Connectivity in the deep: phylogeography of the velvet belly lanternshark. Deep Sea Research Part I: Oceanographic Research Papers 115 , pp. 233-239. 10.1016/j.dsr.2016.07.002 https://doi.org/10.1016/j.dsr.2016.07.002 doi:10.1016/j.dsr.2016.07.002 |
op_doi |
https://doi.org/10.1016/j.dsr.2016.07.002 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
115 |
container_start_page |
233 |
op_container_end_page |
239 |
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1766142796058591232 |