Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea
The endemic Antarctic scallop Adamussium colbecki (Mollusca: Bivalvia) represents a key species in the Ross Sea littoral benthic ecosystem, locally reaching very high densities. This species has an annual gametogenic cycle, with a summer spawning event, and a pelagic larval behaviour. This paper aim...
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CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
2006
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Online Access: | http://hdl.handle.net/11577/1564490 https://doi.org/10.1017/S0954102006000678 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/1564490 2024-02-11T09:57:59+01:00 Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea GUIDETTI M CHIANTORE M ALBERTELLI G CATTANEO VIETTI R. MARCATO, STEFANIA PATARNELLO, TOMASO Guidetti, M Marcato, Stefania Chiantore, M Patarnello, Tomaso Albertelli, G CATTANEO VIETTI, R. 2006 STAMPA http://hdl.handle.net/11577/1564490 https://doi.org/10.1017/S0954102006000678 eng eng CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA info:eu-repo/semantics/altIdentifier/wos/WOS:000242638900018 volume:18 firstpage:645 lastpage:653 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11577/1564490 doi:10.1017/S0954102006000678 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33751027102 info:eu-repo/semantics/article 2006 ftunivpadovairis https://doi.org/10.1017/S0954102006000678 2024-01-24T17:43:48Z The endemic Antarctic scallop Adamussium colbecki (Mollusca: Bivalvia) represents a key species in the Ross Sea littoral benthic ecosystem, locally reaching very high densities. This species has an annual gametogenic cycle, with a summer spawning event, and a pelagic larval behaviour. This paper aims at describing population structure and genetic polymorphism (using AFLP) of the large populations inhabiting the Ross Sea (Terra Nova Bay and McMurdo Sound) in order to investigate possible genetic exchange between A. colbecki in these areas. In Terra Nova Bay, size-frequency distributions show, generally, the dominance of large individuals, although site related differences are found in the abundance of smaller size classes (less than 40 mm), suggesting that recruitment is not a regular event. All McMurdo sites are characterized by large individuals and, at least during this sampling period, recruitment is completely absent. Nuclear DNA analyses show that the largest differences are found at the largest scale (between McMurdo Sound and Terra Nova Bay), but all populations sampled, even at a smaller spatial scale, have a well-settled genetic structure, notwithstanding the pelagic larval strategy. The panmixia hypothesis has therefore to be rejected for this species Article in Journal/Newspaper Antarc* Antarctic McMurdo Sound Ross Sea Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Ross Sea McMurdo Sound Terra Nova Bay Antarctic Science 18 4 645 653 |
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Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
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ftunivpadovairis |
language |
English |
description |
The endemic Antarctic scallop Adamussium colbecki (Mollusca: Bivalvia) represents a key species in the Ross Sea littoral benthic ecosystem, locally reaching very high densities. This species has an annual gametogenic cycle, with a summer spawning event, and a pelagic larval behaviour. This paper aims at describing population structure and genetic polymorphism (using AFLP) of the large populations inhabiting the Ross Sea (Terra Nova Bay and McMurdo Sound) in order to investigate possible genetic exchange between A. colbecki in these areas. In Terra Nova Bay, size-frequency distributions show, generally, the dominance of large individuals, although site related differences are found in the abundance of smaller size classes (less than 40 mm), suggesting that recruitment is not a regular event. All McMurdo sites are characterized by large individuals and, at least during this sampling period, recruitment is completely absent. Nuclear DNA analyses show that the largest differences are found at the largest scale (between McMurdo Sound and Terra Nova Bay), but all populations sampled, even at a smaller spatial scale, have a well-settled genetic structure, notwithstanding the pelagic larval strategy. The panmixia hypothesis has therefore to be rejected for this species |
author2 |
Guidetti, M Marcato, Stefania Chiantore, M Patarnello, Tomaso Albertelli, G CATTANEO VIETTI, R. |
format |
Article in Journal/Newspaper |
author |
GUIDETTI M CHIANTORE M ALBERTELLI G CATTANEO VIETTI R. MARCATO, STEFANIA PATARNELLO, TOMASO |
spellingShingle |
GUIDETTI M CHIANTORE M ALBERTELLI G CATTANEO VIETTI R. MARCATO, STEFANIA PATARNELLO, TOMASO Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
author_facet |
GUIDETTI M CHIANTORE M ALBERTELLI G CATTANEO VIETTI R. MARCATO, STEFANIA PATARNELLO, TOMASO |
author_sort |
GUIDETTI M |
title |
Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
title_short |
Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
title_full |
Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
title_fullStr |
Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
title_full_unstemmed |
Exchange between populations of Adamussium colbecki (Mollusca : Bivalvia) in the Ross Sea |
title_sort |
exchange between populations of adamussium colbecki (mollusca : bivalvia) in the ross sea |
publisher |
CAMBRIDGE UNIV PRESS, 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA |
publishDate |
2006 |
url |
http://hdl.handle.net/11577/1564490 https://doi.org/10.1017/S0954102006000678 |
geographic |
Antarctic Ross Sea McMurdo Sound Terra Nova Bay |
geographic_facet |
Antarctic Ross Sea McMurdo Sound Terra Nova Bay |
genre |
Antarc* Antarctic McMurdo Sound Ross Sea |
genre_facet |
Antarc* Antarctic McMurdo Sound Ross Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000242638900018 volume:18 firstpage:645 lastpage:653 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11577/1564490 doi:10.1017/S0954102006000678 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33751027102 |
op_doi |
https://doi.org/10.1017/S0954102006000678 |
container_title |
Antarctic Science |
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18 |
container_issue |
4 |
container_start_page |
645 |
op_container_end_page |
653 |
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1790593521138270208 |