Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands
The black-fin icefish Chaenocephalus aceratus is among the most abundant fish species on the Antarctic continental shelves of the Scotia Arc, and Bouvet Island. We genotyped 11 microsatellite loci in C. aceratus population samples from South Orkney, southern South Shetlands, and Elephant Island (nor...
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INTER-RESEARCH, NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY
2009
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Online Access: | http://hdl.handle.net/11577/2447103 https://doi.org/10.3354/meps07831 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/2447103 2024-02-27T08:33:30+00:00 Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO SUSANA E Papetti, Chiara Susana, E Patarnello, Tomaso Zane, Lorenzo 2009 STAMPA http://hdl.handle.net/11577/2447103 https://doi.org/10.3354/meps07831 eng eng INTER-RESEARCH, NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY info:eu-repo/semantics/altIdentifier/wos/WOS:000263999900022 volume:376 firstpage:269 lastpage:281 numberofpages:13 journal:MARINE ECOLOGY PROGRESS SERIES http://hdl.handle.net/11577/2447103 doi:10.3354/meps07831 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-62149086246 Antarctic fish Population structure Microsatellites info:eu-repo/semantics/article 2009 ftunivpadovairis https://doi.org/10.3354/meps07831 2024-01-31T17:39:51Z The black-fin icefish Chaenocephalus aceratus is among the most abundant fish species on the Antarctic continental shelves of the Scotia Arc, and Bouvet Island. We genotyped 11 microsatellite loci in C. aceratus population samples from South Orkney, southern South Shetlands, and Elephant Island (northern South Shetlands) collected in 2002 and 2006. This investigation further develops a previous study on the species reporting the presence of one panmittic population in southern South Shetlands and Elephant Island, with genetic differentiation between year classes. Our results reveal a more complex pattern of differentiation than shown previously, as genetic differences occur both at the temporal level at Elephant Island and at the geographic scale between southern South Shetland–Elephant Islands and South Orkney population samples. In particular, the magnitude of genetic differentiation at the temporal scale, the relatively high effective population size (Ne) and high gene flow indicate that genetic differentiation is not only driven by geographic distance. At present, our results should be taken into account when defining conservation measures and management boundaries in regions where fishery is still open or where other Antarctic fish species are still exploited. Article in Journal/Newspaper Antarc* Antarctic Bouvet Island Elephant Island Icefish Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Bouvet ENVELOPE(3.358,3.358,-54.422,-54.422) Bouvet Island ENVELOPE(3.358,3.358,-54.422,-54.422) Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) The Antarctic Marine Ecology Progress Series 376 269 281 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Antarctic fish Population structure Microsatellites |
spellingShingle |
Antarctic fish Population structure Microsatellites PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO SUSANA E Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
topic_facet |
Antarctic fish Population structure Microsatellites |
description |
The black-fin icefish Chaenocephalus aceratus is among the most abundant fish species on the Antarctic continental shelves of the Scotia Arc, and Bouvet Island. We genotyped 11 microsatellite loci in C. aceratus population samples from South Orkney, southern South Shetlands, and Elephant Island (northern South Shetlands) collected in 2002 and 2006. This investigation further develops a previous study on the species reporting the presence of one panmittic population in southern South Shetlands and Elephant Island, with genetic differentiation between year classes. Our results reveal a more complex pattern of differentiation than shown previously, as genetic differences occur both at the temporal level at Elephant Island and at the geographic scale between southern South Shetland–Elephant Islands and South Orkney population samples. In particular, the magnitude of genetic differentiation at the temporal scale, the relatively high effective population size (Ne) and high gene flow indicate that genetic differentiation is not only driven by geographic distance. At present, our results should be taken into account when defining conservation measures and management boundaries in regions where fishery is still open or where other Antarctic fish species are still exploited. |
author2 |
Papetti, Chiara Susana, E Patarnello, Tomaso Zane, Lorenzo |
format |
Article in Journal/Newspaper |
author |
PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO SUSANA E |
author_facet |
PAPETTI, CHIARA PATARNELLO, TOMASO ZANE, LORENZO SUSANA E |
author_sort |
PAPETTI, CHIARA |
title |
Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
title_short |
Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
title_full |
Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
title_fullStr |
Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
title_full_unstemmed |
Spatial and temporal boundaries to gene flow between Chaenocephalus aceratus populations at South Orkney and South Shetlands |
title_sort |
spatial and temporal boundaries to gene flow between chaenocephalus aceratus populations at south orkney and south shetlands |
publisher |
INTER-RESEARCH, NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY |
publishDate |
2009 |
url |
http://hdl.handle.net/11577/2447103 https://doi.org/10.3354/meps07831 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) ENVELOPE(3.358,3.358,-54.422,-54.422) ENVELOPE(-55.184,-55.184,-61.085,-61.085) |
geographic |
Antarctic Bouvet Bouvet Island Elephant Island The Antarctic |
geographic_facet |
Antarctic Bouvet Bouvet Island Elephant Island The Antarctic |
genre |
Antarc* Antarctic Bouvet Island Elephant Island Icefish |
genre_facet |
Antarc* Antarctic Bouvet Island Elephant Island Icefish |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000263999900022 volume:376 firstpage:269 lastpage:281 numberofpages:13 journal:MARINE ECOLOGY PROGRESS SERIES http://hdl.handle.net/11577/2447103 doi:10.3354/meps07831 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-62149086246 |
op_doi |
https://doi.org/10.3354/meps07831 |
container_title |
Marine Ecology Progress Series |
container_volume |
376 |
container_start_page |
269 |
op_container_end_page |
281 |
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1792045986182332416 |