High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean
Many marine pelagic fish species are characterized by subtle but complex genetic structures and dynamics, depending on the balance between current-mediated larval dispersal and adult active homing behavior. The circumantarctic continuous hydrodynamics of the Southern Ocean is a prime example of a sy...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | http://nora.nerc.ac.uk/id/eprint/16883/ http://www.sciencedirect.com/science/article/pii/S0967064511001378 |
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ftnerc:oai:nora.nerc.ac.uk:16883 2023-05-15T13:45:11+02:00 High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean Van de Putte, A.P. Van Houdt, J.K.J. Maes, G.E. Hellemans, B. Collins, Martin Anthony Volckaert, F.A.M. 2012 http://nora.nerc.ac.uk/id/eprint/16883/ http://www.sciencedirect.com/science/article/pii/S0967064511001378 unknown Elsevier Van de Putte, A.P.; Van Houdt, J.K.J.; Maes, G.E.; Hellemans, B.; Collins, Martin Anthony orcid:0000-0001-7132-8650 Volckaert, F.A.M. 2012 High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean. Deep Sea Research II, 59-60. 199-207. https://doi.org/10.1016/j.dsr2.2011.05.011 <https://doi.org/10.1016/j.dsr2.2011.05.011> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.1016/j.dsr2.2011.05.011 2023-02-04T19:30:48Z Many marine pelagic fish species are characterized by subtle but complex genetic structures and dynamics, depending on the balance between current-mediated larval dispersal and adult active homing behavior. The circumantarctic continuous hydrodynamics of the Southern Ocean is a prime example of a system with a potentially great homogenizing effect among distant populations. We tested this hypothesis by analyzing the contemporary genetic relatedness among populations of a common and endemic mesopelagic fish of the Southern Ocean, Electrona antarctica. Seven newly developed species-specific microsatellite markers were used to investigate patterns of neutral genetic variation in 11 geographically widespread samples (n=400) collected between 2006 and 2007. We detected a very high level of genetic diversity, but a striking lack of genetic differentiation on a circumantarctic scale, indicating large effective population sizes complemented with high levels of admixture. These findings underscore the large scale homogenizing effect of the Southern Coastal Current, leading to a high level of connectivity of our model species in the Southern Ocean, which is congruent with its huge biomass and central role in marine food webs. As an important Antarctic marine living resource this species may as such be managed on a circumantarctic level, although the demographic stability of this stock should be estimated urgently. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 59-60 199 207 |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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description |
Many marine pelagic fish species are characterized by subtle but complex genetic structures and dynamics, depending on the balance between current-mediated larval dispersal and adult active homing behavior. The circumantarctic continuous hydrodynamics of the Southern Ocean is a prime example of a system with a potentially great homogenizing effect among distant populations. We tested this hypothesis by analyzing the contemporary genetic relatedness among populations of a common and endemic mesopelagic fish of the Southern Ocean, Electrona antarctica. Seven newly developed species-specific microsatellite markers were used to investigate patterns of neutral genetic variation in 11 geographically widespread samples (n=400) collected between 2006 and 2007. We detected a very high level of genetic diversity, but a striking lack of genetic differentiation on a circumantarctic scale, indicating large effective population sizes complemented with high levels of admixture. These findings underscore the large scale homogenizing effect of the Southern Coastal Current, leading to a high level of connectivity of our model species in the Southern Ocean, which is congruent with its huge biomass and central role in marine food webs. As an important Antarctic marine living resource this species may as such be managed on a circumantarctic level, although the demographic stability of this stock should be estimated urgently. |
format |
Article in Journal/Newspaper |
author |
Van de Putte, A.P. Van Houdt, J.K.J. Maes, G.E. Hellemans, B. Collins, Martin Anthony Volckaert, F.A.M. |
spellingShingle |
Van de Putte, A.P. Van Houdt, J.K.J. Maes, G.E. Hellemans, B. Collins, Martin Anthony Volckaert, F.A.M. High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
author_facet |
Van de Putte, A.P. Van Houdt, J.K.J. Maes, G.E. Hellemans, B. Collins, Martin Anthony Volckaert, F.A.M. |
author_sort |
Van de Putte, A.P. |
title |
High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
title_short |
High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
title_full |
High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
title_fullStr |
High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
title_full_unstemmed |
High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean |
title_sort |
high genetic diversity and connectivity in a common mesopelagic fish of the southern ocean |
publisher |
Elsevier |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/16883/ http://www.sciencedirect.com/science/article/pii/S0967064511001378 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
Van de Putte, A.P.; Van Houdt, J.K.J.; Maes, G.E.; Hellemans, B.; Collins, Martin Anthony orcid:0000-0001-7132-8650 Volckaert, F.A.M. 2012 High genetic diversity and connectivity in a common mesopelagic fish of the Southern Ocean. Deep Sea Research II, 59-60. 199-207. https://doi.org/10.1016/j.dsr2.2011.05.011 <https://doi.org/10.1016/j.dsr2.2011.05.011> |
op_doi |
https://doi.org/10.1016/j.dsr2.2011.05.011 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
59-60 |
container_start_page |
199 |
op_container_end_page |
207 |
_version_ |
1766216183907876864 |