Divergence by depth in an oceanic fish
Despite the striking physical and environmental gradients associated with depth variation in the oceans, relatively little is known about their impact on population diversification, adaptation and speciation. Changes in light associated with increasing depth are likely to alter the visual environmen...
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ftunivsalford:oai:usir.salford.ac.uk:33293 2023-05-15T17:33:04+02:00 Divergence by depth in an oceanic fish Shum, P Pampoulie, C Sacchi, C Mariani, S 2014-08-14 application/pdf http://usir.salford.ac.uk/id/eprint/33293/ http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf https://doi.org/10.7717/peerj.525 en eng Peer J http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf Shum, P, Pampoulie, C, Sacchi, C and Mariani, S orcid:0000-0002-5329-0553 2014, 'Divergence by depth in an oceanic fish' , PeerJ, 2 , e525. doi:10.7717/peerj.525 cc_by http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf:public CC-BY Subjects outside of the University Themes Article PeerReviewed 2014 ftunivsalford https://doi.org/10.7717/peerj.525 2022-03-01T22:08:08Z Despite the striking physical and environmental gradients associated with depth variation in the oceans, relatively little is known about their impact on population diversification, adaptation and speciation. Changes in light associated with increasing depth are likely to alter the visual environment of organisms, and adaptive changes in visual systems may be expected. The pelagic beaked redfish, Sebastes mentella, exhibits depth-associated patterns of substructure in the central North Atlantic, with a widely distributed shallow-pelagic population inhabiting waters between 250 and 550 m depth and a deep-pelagic population dwelling between 550 and 800 m. Here we performed a molecular genetic investigation of samples from fish collected from ‘shallow’ and ‘deep’ populations, using the mitochondrial control region and the gene coding for the visual-pigment rhodopsin. We identify patterns suggestive of potential adaptation to different depths, by detecting a specific amino acid replacement at the rhodopsin gene. Mitochondrial DNA results reflect a scenario of long-term demographic independence between the two S. mentella groups, and raise the possibility that these ‘stocks’ may in fact be two incipient species. Article in Journal/Newspaper North Atlantic Sebastes mentella University of Salford Institutional Repository PeerJ 2 e525 |
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University of Salford Institutional Repository |
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English |
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Subjects outside of the University Themes |
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Subjects outside of the University Themes Shum, P Pampoulie, C Sacchi, C Mariani, S Divergence by depth in an oceanic fish |
topic_facet |
Subjects outside of the University Themes |
description |
Despite the striking physical and environmental gradients associated with depth variation in the oceans, relatively little is known about their impact on population diversification, adaptation and speciation. Changes in light associated with increasing depth are likely to alter the visual environment of organisms, and adaptive changes in visual systems may be expected. The pelagic beaked redfish, Sebastes mentella, exhibits depth-associated patterns of substructure in the central North Atlantic, with a widely distributed shallow-pelagic population inhabiting waters between 250 and 550 m depth and a deep-pelagic population dwelling between 550 and 800 m. Here we performed a molecular genetic investigation of samples from fish collected from ‘shallow’ and ‘deep’ populations, using the mitochondrial control region and the gene coding for the visual-pigment rhodopsin. We identify patterns suggestive of potential adaptation to different depths, by detecting a specific amino acid replacement at the rhodopsin gene. Mitochondrial DNA results reflect a scenario of long-term demographic independence between the two S. mentella groups, and raise the possibility that these ‘stocks’ may in fact be two incipient species. |
format |
Article in Journal/Newspaper |
author |
Shum, P Pampoulie, C Sacchi, C Mariani, S |
author_facet |
Shum, P Pampoulie, C Sacchi, C Mariani, S |
author_sort |
Shum, P |
title |
Divergence by depth in an oceanic fish |
title_short |
Divergence by depth in an oceanic fish |
title_full |
Divergence by depth in an oceanic fish |
title_fullStr |
Divergence by depth in an oceanic fish |
title_full_unstemmed |
Divergence by depth in an oceanic fish |
title_sort |
divergence by depth in an oceanic fish |
publisher |
Peer J |
publishDate |
2014 |
url |
http://usir.salford.ac.uk/id/eprint/33293/ http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf https://doi.org/10.7717/peerj.525 |
genre |
North Atlantic Sebastes mentella |
genre_facet |
North Atlantic Sebastes mentella |
op_relation |
http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf Shum, P, Pampoulie, C, Sacchi, C and Mariani, S orcid:0000-0002-5329-0553 2014, 'Divergence by depth in an oceanic fish' , PeerJ, 2 , e525. doi:10.7717/peerj.525 |
op_rights |
cc_by http://usir.salford.ac.uk/id/eprint/33293/1/peerj-525.pdf:public |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7717/peerj.525 |
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PeerJ |
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2 |
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e525 |
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1766131451660599296 |