Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets
Biofilms were allowed to develop on ceramic tiles placed in closed containers on the shore of Potter Cove, 25 de Mayo (King George) Island. Water pumping from the cove inside the containers extended for 25 days. Diatoms were the dominant microalgae in these biofilms, which were removed from a set of...
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ftconicet:oai:ri.conicet.gov.ar:11336/88797 2023-10-09T21:47:13+02:00 Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets Daglio, Yasmin Sacristán, Hernán Javier Ansaldo, Martin Rodríguez, María C. application/pdf http://hdl.handle.net/11336/88797 eng eng Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.polar.2018.01.004 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1873965217300567 http://hdl.handle.net/11336/88797 Daglio, Yasmin; Sacristán, Hernán Javier; Ansaldo, Martin; Rodríguez, María C.; Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets; Elsevier; Polar Science; 15; 3-2018; 39-48 1873-9652 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ 25 DE MAYO (KING GEORGE) ISLAND ANTARCTICA BENTHIC DIATOMS FEEDING GASTROPODS NACELLA CONCINNA POTTER COVE Β-1,3-GLUCAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.polar.2018.01.004 2023-09-24T20:06:54Z Biofilms were allowed to develop on ceramic tiles placed in closed containers on the shore of Potter Cove, 25 de Mayo (King George) Island. Water pumping from the cove inside the containers extended for 25 days. Diatoms were the dominant microalgae in these biofilms, which were removed from a set of tiles to a) characterize the extracellular mucilage, b) carry out floristic determination and c) perform grazing experiments with the limpet Nacella concinna. Biofilms mucilaginous matrix consisted of proteins and carbohydrates. Room temperature aqueous extraction of the freeze-dried material rendered a fraction enriched in the storage glucan chrysolaminarin, its identity confirmed by methylation structural analyses. Hot water extracted products showed greater heterogeneity in monosaccharide composition, including glucose, mannose, galactose, fucose, xylose and rhamnose. Diatom identification revealed that Pseudogomphonema kamtschaticum was the dominant species followed by several Navicula species, Nitzschia pellucida and Synedra kerguelensis. Photographical survey of colonized tiles placed in glass flasks together with a specimen of Nacella concinna exhibited between 5 and 30% removal of the biofilms coverage after 24 h of exposure to the limpet, suggesting that EPS and chrysolaminarin constitute a C-source for the gastropod. Fil: Daglio, Yasmin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina Fil: Sacristán, Hernán Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Ansaldo, Martin. Instituto Antártico Argentino; Argentina Fil: Rodríguez, María C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. ... Article in Journal/Newspaper Antarc* Antarctica Instituto Antártico Argentino King George Island Polar Science Polar Science CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Austral King George Island Potter Cove Argentino Argentina Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Hernán ENVELOPE(-62.867,-62.867,-64.900,-64.900) Polar Science 15 39 48 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
25 DE MAYO (KING GEORGE) ISLAND ANTARCTICA BENTHIC DIATOMS FEEDING GASTROPODS NACELLA CONCINNA POTTER COVE Β-1,3-GLUCAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
25 DE MAYO (KING GEORGE) ISLAND ANTARCTICA BENTHIC DIATOMS FEEDING GASTROPODS NACELLA CONCINNA POTTER COVE Β-1,3-GLUCAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Daglio, Yasmin Sacristán, Hernán Javier Ansaldo, Martin Rodríguez, María C. Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
topic_facet |
25 DE MAYO (KING GEORGE) ISLAND ANTARCTICA BENTHIC DIATOMS FEEDING GASTROPODS NACELLA CONCINNA POTTER COVE Β-1,3-GLUCAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Biofilms were allowed to develop on ceramic tiles placed in closed containers on the shore of Potter Cove, 25 de Mayo (King George) Island. Water pumping from the cove inside the containers extended for 25 days. Diatoms were the dominant microalgae in these biofilms, which were removed from a set of tiles to a) characterize the extracellular mucilage, b) carry out floristic determination and c) perform grazing experiments with the limpet Nacella concinna. Biofilms mucilaginous matrix consisted of proteins and carbohydrates. Room temperature aqueous extraction of the freeze-dried material rendered a fraction enriched in the storage glucan chrysolaminarin, its identity confirmed by methylation structural analyses. Hot water extracted products showed greater heterogeneity in monosaccharide composition, including glucose, mannose, galactose, fucose, xylose and rhamnose. Diatom identification revealed that Pseudogomphonema kamtschaticum was the dominant species followed by several Navicula species, Nitzschia pellucida and Synedra kerguelensis. Photographical survey of colonized tiles placed in glass flasks together with a specimen of Nacella concinna exhibited between 5 and 30% removal of the biofilms coverage after 24 h of exposure to the limpet, suggesting that EPS and chrysolaminarin constitute a C-source for the gastropod. Fil: Daglio, Yasmin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones en Hidratos de Carbono. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones en Hidratos de Carbono; Argentina Fil: Sacristán, Hernán Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Ansaldo, Martin. Instituto Antártico Argentino; Argentina Fil: Rodríguez, María C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. ... |
format |
Article in Journal/Newspaper |
author |
Daglio, Yasmin Sacristán, Hernán Javier Ansaldo, Martin Rodríguez, María C. |
author_facet |
Daglio, Yasmin Sacristán, Hernán Javier Ansaldo, Martin Rodríguez, María C. |
author_sort |
Daglio, Yasmin |
title |
Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
title_short |
Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
title_full |
Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
title_fullStr |
Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
title_full_unstemmed |
Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets |
title_sort |
benthic diatoms from potter cove, 25 de mayo (king george) island, antarctica: mucilage and glucan storage as a c-source for limpets |
publisher |
Elsevier |
url |
http://hdl.handle.net/11336/88797 |
long_lat |
ENVELOPE(-60.783,-60.783,-62.467,-62.467) ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-62.867,-62.867,-64.900,-64.900) |
geographic |
Austral King George Island Potter Cove Argentino Argentina Nacella 25 de Mayo Hernán |
geographic_facet |
Austral King George Island Potter Cove Argentino Argentina Nacella 25 de Mayo Hernán |
genre |
Antarc* Antarctica Instituto Antártico Argentino King George Island Polar Science Polar Science |
genre_facet |
Antarc* Antarctica Instituto Antártico Argentino King George Island Polar Science Polar Science |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.polar.2018.01.004 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1873965217300567 http://hdl.handle.net/11336/88797 Daglio, Yasmin; Sacristán, Hernán Javier; Ansaldo, Martin; Rodríguez, María C.; Benthic diatoms from Potter Cove, 25 de Mayo (King George) Island, Antarctica: mucilage and glucan storage as a C-source for limpets; Elsevier; Polar Science; 15; 3-2018; 39-48 1873-9652 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.polar.2018.01.004 |
container_title |
Polar Science |
container_volume |
15 |
container_start_page |
39 |
op_container_end_page |
48 |
_version_ |
1779310163895779328 |