Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.)
12 pages, 7 figures, 4 tables The diet composition of 2 Antarctic octocorals, Primnoisis antarctica and Primnoella sp., from the shelf of the eastern Weddell Sea (Antarctica) is studied here for the first time. Although mesozooplankton is very scarce in the diet of these organisms, it seems to be im...
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Online Access: | http://hdl.handle.net/10261/184218 https://doi.org/10.3354/meps250105 |
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ftcsic:oai:digital.csic.es:10261/184218 2024-02-11T09:58:46+01:00 Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) Orejas, Covadonga Gili, Josep Maria Arntz, Wolf E. 2003-03 http://hdl.handle.net/10261/184218 https://doi.org/10.3354/meps250105 unknown Inter Research Publisher's version https://doi.org/10.3354/meps250105 Sí doi:10.3354/meps250105 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 250: 105-116 (2003) http://hdl.handle.net/10261/184218 open Antarctic gorgonians Small plankton communities Suspension feeders Feeding ecology artículo http://purl.org/coar/resource_type/c_6501 2003 ftcsic https://doi.org/10.3354/meps250105 2024-01-16T10:40:26Z 12 pages, 7 figures, 4 tables The diet composition of 2 Antarctic octocorals, Primnoisis antarctica and Primnoella sp., from the shelf of the eastern Weddell Sea (Antarctica) is studied here for the first time. Although mesozooplankton is very scarce in the diet of these organisms, it seems to be important because of its high carbon content. Feeding experiments showed that components of the seston, including the finer fraction of suspended organic matter (ciliates, dinoflagellates and phytoplankton), are also an important part of the octocoral diet. In P. antarctica, the diatom Pragillariopsis spp. accounted for 77% of the total number of cells captured, followed by dinoflagellates (20%), Nitzschia spp. (2%) and ciliates (1%). In Primnoella sp., dinoflagellates were consumed preferentially (92%), followed by ciliates (6%) and centric diatoms (2%). Biomass consumed, however, was low (1.11 × 10-5 mg C polyp-1 d-1 for P. antarctica and 1.34 × 10-4 mg C polyp-1 d-1 for Primnoella sp.). In P. antarctica, small plankton food covers approximately 49% of the daily energy demand. The ability of these suspension feeders to capture small cells at lower concentrations may allow them to remain seasonally active for considerably longer periods than previously thought Peer Reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic Weddell Weddell Sea Marine Ecology Progress Series 250 105 116 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Antarctic gorgonians Small plankton communities Suspension feeders Feeding ecology |
spellingShingle |
Antarctic gorgonians Small plankton communities Suspension feeders Feeding ecology Orejas, Covadonga Gili, Josep Maria Arntz, Wolf E. Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
topic_facet |
Antarctic gorgonians Small plankton communities Suspension feeders Feeding ecology |
description |
12 pages, 7 figures, 4 tables The diet composition of 2 Antarctic octocorals, Primnoisis antarctica and Primnoella sp., from the shelf of the eastern Weddell Sea (Antarctica) is studied here for the first time. Although mesozooplankton is very scarce in the diet of these organisms, it seems to be important because of its high carbon content. Feeding experiments showed that components of the seston, including the finer fraction of suspended organic matter (ciliates, dinoflagellates and phytoplankton), are also an important part of the octocoral diet. In P. antarctica, the diatom Pragillariopsis spp. accounted for 77% of the total number of cells captured, followed by dinoflagellates (20%), Nitzschia spp. (2%) and ciliates (1%). In Primnoella sp., dinoflagellates were consumed preferentially (92%), followed by ciliates (6%) and centric diatoms (2%). Biomass consumed, however, was low (1.11 × 10-5 mg C polyp-1 d-1 for P. antarctica and 1.34 × 10-4 mg C polyp-1 d-1 for Primnoella sp.). In P. antarctica, small plankton food covers approximately 49% of the daily energy demand. The ability of these suspension feeders to capture small cells at lower concentrations may allow them to remain seasonally active for considerably longer periods than previously thought Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Orejas, Covadonga Gili, Josep Maria Arntz, Wolf E. |
author_facet |
Orejas, Covadonga Gili, Josep Maria Arntz, Wolf E. |
author_sort |
Orejas, Covadonga |
title |
Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
title_short |
Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
title_full |
Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
title_fullStr |
Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
title_full_unstemmed |
Role of small-plankton communities in the diet oftwo Antarctic octocorals (Primnoisis antarcticaandPrimnoella sp.) |
title_sort |
role of small-plankton communities in the diet oftwo antarctic octocorals (primnoisis antarcticaandprimnoella sp.) |
publisher |
Inter Research |
publishDate |
2003 |
url |
http://hdl.handle.net/10261/184218 https://doi.org/10.3354/meps250105 |
geographic |
Antarctic Weddell Weddell Sea |
geographic_facet |
Antarctic Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica Weddell Sea |
op_relation |
Publisher's version https://doi.org/10.3354/meps250105 Sí doi:10.3354/meps250105 issn: 0171-8630 e-issn: 1616-1599 Marine Ecology Progress Series 250: 105-116 (2003) http://hdl.handle.net/10261/184218 |
op_rights |
open |
op_doi |
https://doi.org/10.3354/meps250105 |
container_title |
Marine Ecology Progress Series |
container_volume |
250 |
container_start_page |
105 |
op_container_end_page |
116 |
_version_ |
1790594515389644800 |