Trophic plasticity of Antarctic echinoids under contrasted environmental conditions

Echinoids are common members of Antarctic zoobenthos, and different groups can show important trophic diversity. As part of the ANT-XXIX/3 cruise of RV Polarstern, trophic plasticity of sea urchins was studied in three neighbouring regions (Drake Passage, Bransfield Strait and Weddell Sea) featuring...

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Main Authors: Loïc, Michel, David, Bruno, Dubois, Philippe, Lepoint, Gilles, De Ridder, Chantal
Format: Article in Journal/Newspaper
Language:French
Published: 2016
Subjects:
Online Access:http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229572
id ftunivbruxelles:oai:dipot.ulb.ac.be:2013/229572
record_format openpolar
spelling ftunivbruxelles:oai:dipot.ulb.ac.be:2013/229572 2023-05-15T13:50:15+02:00 Trophic plasticity of Antarctic echinoids under contrasted environmental conditions Loïc, Michel David, Bruno Dubois, Philippe Lepoint, Gilles De Ridder, Chantal 2016 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229572 fr fre uri/info:doi/10.1007/s00300-015-1873-y uri/info:scp/84951926814 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229572 Polar biology, 39 Sciences exactes et naturelles Antarctic Diet shift Echinoids Ecological plasticity Feeding behaviour Stable isotopes info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2016 ftunivbruxelles 2022-06-12T21:30:14Z Echinoids are common members of Antarctic zoobenthos, and different groups can show important trophic diversity. As part of the ANT-XXIX/3 cruise of RV Polarstern, trophic plasticity of sea urchins was studied in three neighbouring regions (Drake Passage, Bransfield Strait and Weddell Sea) featuring several depth-related habitats offering different trophic environments to benthic consumers. Three families with contrasting feeding habits (Cidaridae, Echinidae and Schizasteridae) were studied. Gut content examination and stable isotopes ratios of C and N suggest that each of the studied families showed a different response to variation in environmental and food conditions. Schizasteridae trophic plasticity was low, and these sea urchins were bulk sediment feeders relying on sediment-associated organic matter in all regions and/or depth-related habitats. Cidaridae consumed the most animal-derived material. Their diet varied according to the considered area, as sea urchins from Bransfield Strait relied mostly on living and/or dead animal material, while specimens from Weddell Sea fed on a mixture of dead animal material and other detritus. Echinidae also showed important trophic plasticity. They fed on various detrital items in Bransfield Strait, and selectivity of ingested material varied across depth-related habitats. In Weddell Sea, stable isotopes revealed that they mostly relied on highly 13C-enriched food items, presumably microbially reworked benthic detritus. The differences in adaptive strategies could lead to family-specific responses of Antarctic echinoids to environmental and food-related changes. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Bransfield Strait Drake Passage Polar Biology Weddell Sea DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic Bransfield Strait Drake Passage Weddell Weddell Sea
institution Open Polar
collection DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
op_collection_id ftunivbruxelles
language French
topic Sciences exactes et naturelles
Antarctic
Diet shift
Echinoids
Ecological plasticity
Feeding behaviour
Stable isotopes
spellingShingle Sciences exactes et naturelles
Antarctic
Diet shift
Echinoids
Ecological plasticity
Feeding behaviour
Stable isotopes
Loïc, Michel
David, Bruno
Dubois, Philippe
Lepoint, Gilles
De Ridder, Chantal
Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
topic_facet Sciences exactes et naturelles
Antarctic
Diet shift
Echinoids
Ecological plasticity
Feeding behaviour
Stable isotopes
description Echinoids are common members of Antarctic zoobenthos, and different groups can show important trophic diversity. As part of the ANT-XXIX/3 cruise of RV Polarstern, trophic plasticity of sea urchins was studied in three neighbouring regions (Drake Passage, Bransfield Strait and Weddell Sea) featuring several depth-related habitats offering different trophic environments to benthic consumers. Three families with contrasting feeding habits (Cidaridae, Echinidae and Schizasteridae) were studied. Gut content examination and stable isotopes ratios of C and N suggest that each of the studied families showed a different response to variation in environmental and food conditions. Schizasteridae trophic plasticity was low, and these sea urchins were bulk sediment feeders relying on sediment-associated organic matter in all regions and/or depth-related habitats. Cidaridae consumed the most animal-derived material. Their diet varied according to the considered area, as sea urchins from Bransfield Strait relied mostly on living and/or dead animal material, while specimens from Weddell Sea fed on a mixture of dead animal material and other detritus. Echinidae also showed important trophic plasticity. They fed on various detrital items in Bransfield Strait, and selectivity of ingested material varied across depth-related habitats. In Weddell Sea, stable isotopes revealed that they mostly relied on highly 13C-enriched food items, presumably microbially reworked benthic detritus. The differences in adaptive strategies could lead to family-specific responses of Antarctic echinoids to environmental and food-related changes. SCOPUS: ar.j info:eu-repo/semantics/published
format Article in Journal/Newspaper
author Loïc, Michel
David, Bruno
Dubois, Philippe
Lepoint, Gilles
De Ridder, Chantal
author_facet Loïc, Michel
David, Bruno
Dubois, Philippe
Lepoint, Gilles
De Ridder, Chantal
author_sort Loïc, Michel
title Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
title_short Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
title_full Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
title_fullStr Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
title_full_unstemmed Trophic plasticity of Antarctic echinoids under contrasted environmental conditions
title_sort trophic plasticity of antarctic echinoids under contrasted environmental conditions
publishDate 2016
url http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229572
geographic Antarctic
Bransfield Strait
Drake Passage
Weddell
Weddell Sea
geographic_facet Antarctic
Bransfield Strait
Drake Passage
Weddell
Weddell Sea
genre Antarc*
Antarctic
Bransfield Strait
Drake Passage
Polar Biology
Weddell Sea
genre_facet Antarc*
Antarctic
Bransfield Strait
Drake Passage
Polar Biology
Weddell Sea
op_source Polar biology, 39
op_relation uri/info:doi/10.1007/s00300-015-1873-y
uri/info:scp/84951926814
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/229572
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