Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits
ABSTRACT. Introduction: The shelf-break frontal area in the Argentine Sea, between 37º S and 40º S, is characterized by high frequency and abundance of the parchment worm Chaetopterus antarcticus Kinberg, 1866 associated to Zygochlamys patagonica scallop beds. This polychaete was usually collected w...
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Universidad de Costa Rica
2019
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ftucostaricaojs:oai:portal.ucr.ac.cr:article/38924 2023-12-10T09:42:04+01:00 Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits Chaetopterus antarcticus (Chaetopteridae) en bancos de vieiras del Atlántico SO: de hábito de vida infaunal a epifaunal Bremec, Claudia S. Schejter, Laura 2019-07-01 application/pdf text/html https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924 https://doi.org/10.15517/rbt.v67iS5.38924 eng eng Universidad de Costa Rica https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924/39687 https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924/39688 https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924 doi:10.15517/rbt.v67iS5.38924 Derechos de autor 2019 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 Revista de Biología Tropical; Vol. 67 No. S5 (2019): Volume 67 – Supplement 5 – July 2019: V Latin American Polychaeta Symposium (V SILPOLY); S39–S50 Revista de Biología Tropical; Vol. 67 Núm. S5 (2019): Volumen 67 – Suplemento 5 – Julio 2019: V Simposio Latinoamericano de Polychaeta (V SILPOLY); S39–S50 Revista Biología Tropical; Vol. 67 N.º S5 (2019): Volumen 67 – Suplemento 5 – Julio 2019: V Simposio Latinoamericano de Polychaeta (V SILPOLY); S39–S50 2215-2075 0034-7744 10.15517/rbt.v67iS5 chaetopterido fondo arenoso bancos de vieira infaunal epifaunal Argentina info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article 2019 ftucostaricaojs https://doi.org/10.15517/rbt.v67iS5.3892410.15517/rbt.v67iS5 2023-11-16T00:41:11Z ABSTRACT. Introduction: The shelf-break frontal area in the Argentine Sea, between 37º S and 40º S, is characterized by high frequency and abundance of the parchment worm Chaetopterus antarcticus Kinberg, 1866 associated to Zygochlamys patagonica scallop beds. This polychaete was usually collected within its U tubes, typical of infaunal habit. During 2007, a surprising massive settlement of worms on scallops was observed. Objective: Our objectives is to report the variability of life habits of C. antarcticus in scallop grounds distributed between 37º S and 40º S in Argentinean waters. Methods: The presence of the parchment tube worms on Z. patagonica was analyzed in 892 scallops coming from three samples collected in September (previously obtained for other purposes) and November 2007 and April 2008, between 99-106 m depth in Management Unit B (16.186 km2, 38º S - 39º 52’ S). Polychaetes were identified and quantified on both valves. In addition, both epibiont and infaunal worms were registered through time. The settlement of C. antarcticus on scallops was monitored during the period 2007-2015 and the presence of free tubes, both empty and inhabited by worms, were registered during the period 2008-2015 from a total of 374 representative subsamples (10 l) collected with trawling tools between 37º S and 40º S. Results: Scallops collected in 2007 and 2008 showed that 468 (> 50 %) specimens were encrusted; in 66 % (311 specimens) of them C. antarcticus was settled. The temporal analysis showed that the spatial distribution of epibiotic worms decreased in 2009, 2010 and 2012, with its total absence in 2013, 2014 and 2015 in the study area. During the period 2007 - 2015, infaunal worms were registered throughout the area, collected in part of the locations monitored. Conclusions: The variability of life habits of C. antarcticus was not commonly registered previously in the study area; epibiotic behavior could be the result of intensive soft sediment disturbance due to trawling and hence, the selection of other ... Article in Journal/Newspaper Antarc* antarcticus Portal de revistas académicas de la Universidad de Costa Rica Argentina Argentine Revista de Biología Tropical 67 S5 S39 S50 |
institution |
Open Polar |
collection |
Portal de revistas académicas de la Universidad de Costa Rica |
op_collection_id |
ftucostaricaojs |
language |
English |
topic |
chaetopterido fondo arenoso bancos de vieira infaunal epifaunal Argentina |
spellingShingle |
chaetopterido fondo arenoso bancos de vieira infaunal epifaunal Argentina Bremec, Claudia S. Schejter, Laura Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
topic_facet |
chaetopterido fondo arenoso bancos de vieira infaunal epifaunal Argentina |
description |
ABSTRACT. Introduction: The shelf-break frontal area in the Argentine Sea, between 37º S and 40º S, is characterized by high frequency and abundance of the parchment worm Chaetopterus antarcticus Kinberg, 1866 associated to Zygochlamys patagonica scallop beds. This polychaete was usually collected within its U tubes, typical of infaunal habit. During 2007, a surprising massive settlement of worms on scallops was observed. Objective: Our objectives is to report the variability of life habits of C. antarcticus in scallop grounds distributed between 37º S and 40º S in Argentinean waters. Methods: The presence of the parchment tube worms on Z. patagonica was analyzed in 892 scallops coming from three samples collected in September (previously obtained for other purposes) and November 2007 and April 2008, between 99-106 m depth in Management Unit B (16.186 km2, 38º S - 39º 52’ S). Polychaetes were identified and quantified on both valves. In addition, both epibiont and infaunal worms were registered through time. The settlement of C. antarcticus on scallops was monitored during the period 2007-2015 and the presence of free tubes, both empty and inhabited by worms, were registered during the period 2008-2015 from a total of 374 representative subsamples (10 l) collected with trawling tools between 37º S and 40º S. Results: Scallops collected in 2007 and 2008 showed that 468 (> 50 %) specimens were encrusted; in 66 % (311 specimens) of them C. antarcticus was settled. The temporal analysis showed that the spatial distribution of epibiotic worms decreased in 2009, 2010 and 2012, with its total absence in 2013, 2014 and 2015 in the study area. During the period 2007 - 2015, infaunal worms were registered throughout the area, collected in part of the locations monitored. Conclusions: The variability of life habits of C. antarcticus was not commonly registered previously in the study area; epibiotic behavior could be the result of intensive soft sediment disturbance due to trawling and hence, the selection of other ... |
format |
Article in Journal/Newspaper |
author |
Bremec, Claudia S. Schejter, Laura |
author_facet |
Bremec, Claudia S. Schejter, Laura |
author_sort |
Bremec, Claudia S. |
title |
Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
title_short |
Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
title_full |
Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
title_fullStr |
Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
title_full_unstemmed |
Chaetopterus antarcticus (Polychaeta: Chaetopteridae) in Argentinian shelf scallop beds: from infaunal to epifaunal life habits |
title_sort |
chaetopterus antarcticus (polychaeta: chaetopteridae) in argentinian shelf scallop beds: from infaunal to epifaunal life habits |
publisher |
Universidad de Costa Rica |
publishDate |
2019 |
url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924 https://doi.org/10.15517/rbt.v67iS5.38924 |
geographic |
Argentina Argentine |
geographic_facet |
Argentina Argentine |
genre |
Antarc* antarcticus |
genre_facet |
Antarc* antarcticus |
op_source |
Revista de Biología Tropical; Vol. 67 No. S5 (2019): Volume 67 – Supplement 5 – July 2019: V Latin American Polychaeta Symposium (V SILPOLY); S39–S50 Revista de Biología Tropical; Vol. 67 Núm. S5 (2019): Volumen 67 – Suplemento 5 – Julio 2019: V Simposio Latinoamericano de Polychaeta (V SILPOLY); S39–S50 Revista Biología Tropical; Vol. 67 N.º S5 (2019): Volumen 67 – Suplemento 5 – Julio 2019: V Simposio Latinoamericano de Polychaeta (V SILPOLY); S39–S50 2215-2075 0034-7744 10.15517/rbt.v67iS5 |
op_relation |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924/39687 https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924/39688 https://revistas.ucr.ac.cr/index.php/rbt/article/view/38924 doi:10.15517/rbt.v67iS5.38924 |
op_rights |
Derechos de autor 2019 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.15517/rbt.v67iS5.3892410.15517/rbt.v67iS5 |
container_title |
Revista de Biología Tropical |
container_volume |
67 |
container_issue |
S5 |
container_start_page |
S39 |
op_container_end_page |
S50 |
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1784884821408874496 |