Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders
International audience In French Atlantic coastal ponds of Charente, oysters can grow under conditions where phytoplankton production is limited by nutrients exhaustion. Such ponds typically show a high concentration of ciliates and flagellates during the growing season (1 x 104 to 3 x 105 cells l-1...
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1999
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ftccsdartic:oai:HAL:hal-01248026v1 2023-05-15T15:57:46+02:00 Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders Dupuy, Christine Le Gall, Solange Hartmann, Hans J. Breret, Martine LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Station de l'Houmeau IFREMER-DEL 1999 https://hal.archives-ouvertes.fr/hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026/document https://hal.archives-ouvertes.fr/hal-01248026/file/dupuy%20et%20al%201999.pdf en eng HAL CCSD Inter Research hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026/document https://hal.archives-ouvertes.fr/hal-01248026/file/dupuy%20et%20al%201999.pdf info:eu-repo/semantics/OpenAccess ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-01248026 Marine Ecology Progress Series, Inter Research, 1999 trophic link picoplankton food source coastal pond microbial food web protist Bivalve oyster [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 1999 ftccsdartic 2021-10-24T10:59:47Z International audience In French Atlantic coastal ponds of Charente, oysters can grow under conditions where phytoplankton production is limited by nutrients exhaustion. Such ponds typically show a high concentration of ciliates and flagellates during the growing season (1 x 104 to 3 x 105 cells l-1 in June 1997). In order to evaluate the importance of the "protozoan trophic link " for energy transfer from the " microbial food web" to large benthic suspension feeders, we offered a coastal pond community of ciliates and flagellates as potential prey to the oyster, Crassostrea gigas. Clearance rate, filtered particles and relative retention efficiency were evaluated. In the grazing experiment, 94 % of ciliates and 86 % of flagellates (size between 4 and 72 μm), were retained by the oyster. Whatever their size, protists were similarly retained by the oyster gills. In terms of carbon, oyster retain on average 126 μg carbon (C) h-1 g-1 dry weight, a value over 4 times higher than reported for phytoplankton. These results indicate that a field community of protists can contribute in coastal oyster rearing ponds to the energy requirements of the oyster Crassostrea gigas. We report here the first experimental evidence of a significant retention of a protist community by oysters, supporting the role of protists as a trophic link between picoplankton and benthic filter-feeding bivalves. Article in Journal/Newspaper Crassostrea gigas Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
trophic link picoplankton food source coastal pond microbial food web protist Bivalve oyster [SDV]Life Sciences [q-bio] |
spellingShingle |
trophic link picoplankton food source coastal pond microbial food web protist Bivalve oyster [SDV]Life Sciences [q-bio] Dupuy, Christine Le Gall, Solange Hartmann, Hans J. Breret, Martine Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
topic_facet |
trophic link picoplankton food source coastal pond microbial food web protist Bivalve oyster [SDV]Life Sciences [q-bio] |
description |
International audience In French Atlantic coastal ponds of Charente, oysters can grow under conditions where phytoplankton production is limited by nutrients exhaustion. Such ponds typically show a high concentration of ciliates and flagellates during the growing season (1 x 104 to 3 x 105 cells l-1 in June 1997). In order to evaluate the importance of the "protozoan trophic link " for energy transfer from the " microbial food web" to large benthic suspension feeders, we offered a coastal pond community of ciliates and flagellates as potential prey to the oyster, Crassostrea gigas. Clearance rate, filtered particles and relative retention efficiency were evaluated. In the grazing experiment, 94 % of ciliates and 86 % of flagellates (size between 4 and 72 μm), were retained by the oyster. Whatever their size, protists were similarly retained by the oyster gills. In terms of carbon, oyster retain on average 126 μg carbon (C) h-1 g-1 dry weight, a value over 4 times higher than reported for phytoplankton. These results indicate that a field community of protists can contribute in coastal oyster rearing ponds to the energy requirements of the oyster Crassostrea gigas. We report here the first experimental evidence of a significant retention of a protist community by oysters, supporting the role of protists as a trophic link between picoplankton and benthic filter-feeding bivalves. |
author2 |
LIttoral ENvironnement et Sociétés - UMRi 7266 (LIENSs) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS) Station de l'Houmeau IFREMER-DEL |
format |
Article in Journal/Newspaper |
author |
Dupuy, Christine Le Gall, Solange Hartmann, Hans J. Breret, Martine |
author_facet |
Dupuy, Christine Le Gall, Solange Hartmann, Hans J. Breret, Martine |
author_sort |
Dupuy, Christine |
title |
Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
title_short |
Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
title_full |
Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
title_fullStr |
Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
title_full_unstemmed |
Retention of ciliates and flagellates by the oyster Crassostrea gigas in French Atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
title_sort |
retention of ciliates and flagellates by the oyster crassostrea gigas in french atlantic coastal ponds: protists as a trophic link between bacterioplankton and benthic suspension-feeders |
publisher |
HAL CCSD |
publishDate |
1999 |
url |
https://hal.archives-ouvertes.fr/hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026/document https://hal.archives-ouvertes.fr/hal-01248026/file/dupuy%20et%20al%201999.pdf |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.archives-ouvertes.fr/hal-01248026 Marine Ecology Progress Series, Inter Research, 1999 |
op_relation |
hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026 https://hal.archives-ouvertes.fr/hal-01248026/document https://hal.archives-ouvertes.fr/hal-01248026/file/dupuy%20et%20al%201999.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766393460213940224 |