Sources of dietary cadmium to the Pacific oyster
International audience Oysters from the Pacific north-west coast contain high cadmium concentrations (greater than 13.5 μg g dry weight), which exceed consumer guidelines for international markets. Oysters are selective filter-feeders and attempts which have focused on suspended particulate matter (...
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Online Access: | https://hal.archives-ouvertes.fr/hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077/document https://hal.archives-ouvertes.fr/hal-00563077/file/PEER_stage2_10.1016%252Fj.marenvres.2009.04.008.pdf https://doi.org/10.1016/j.marenvres.2009.04.008 |
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ftccsdartic:oai:HAL:hal-00563077v1 2023-05-15T17:54:20+02:00 Sources of dietary cadmium to the Pacific oyster Christie, J.C. Bendell, L.I. Department of Biological Sciences Burnaby Simon Fraser University (SFU.ca) 2009-07-10 https://hal.archives-ouvertes.fr/hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077/document https://hal.archives-ouvertes.fr/hal-00563077/file/PEER_stage2_10.1016%252Fj.marenvres.2009.04.008.pdf https://doi.org/10.1016/j.marenvres.2009.04.008 en eng HAL CCSD Elsevier science info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marenvres.2009.04.008 hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077/document https://hal.archives-ouvertes.fr/hal-00563077/file/PEER_stage2_10.1016%252Fj.marenvres.2009.04.008.pdf doi:10.1016/j.marenvres.2009.04.008 info:eu-repo/semantics/OpenAccess ISSN: 0141-1136 EISSN: 1879-0291 Marine Environmental Research https://hal.archives-ouvertes.fr/hal-00563077 Marine Environmental Research, Elsevier science, 2009, 68 (3), pp.97. ⟨10.1016/j.marenvres.2009.04.008⟩ Oysters info:eu-repo/semantics/article Journal articles 2009 ftccsdartic https://doi.org/10.1016/j.marenvres.2009.04.008 2021-12-19T03:43:18Z International audience Oysters from the Pacific north-west coast contain high cadmium concentrations (greater than 13.5 μg g dry weight), which exceed consumer guidelines for international markets. Oysters are selective filter-feeders and attempts which have focused on suspended particulate matter (SPM) as a means to assess the importance of diet as a route of cadmium exposure have met with limited success. Here we use actual gut contents as an alternate to SPM to assess if this is a better predictor of cadmium exposure to the oyster via the diet. We also applied stable isotope analysis, δC and δN, to determine the origin of organic material (from terrestrial to oceanic) ingested by the oyster. Oyster gut and tissue cadmium concentrations and corresponding isotopic signatures were determined every two-three months for 22 months from 10 locations on the west coast of B.C. Gut and tissue cadmium concentrations were correlated (r=0.40; p < 0.05), suggesting that diet could account for at least 40% of observed cadmium oysters residues. Oyster gut and tissue cadmium concentrations and δC and δN signatures were region dependent. Oysters from the most marine influenced sites contained gut and tissue cadmium residues of 30.4±3.08 (S.E.) μg g and 6.0±0.6 μg g, respectively, and a stable isotopic signature typical of marine phytoplankton. In contrast, oysters sampled from regions influenced by coastal processes contained significantly greater concentrations of cadmium, 43.0 ± 2.4 μg g and 10.2 ± 0.68 μg g gut and tissue respectively with isotopic signatures representative of terrestrial organic matter. This indicates that diet is an important source of cadmium to oysters from the Pacific north-west, however its importance is region dependent and cannot be simply ascribed to one source of organic matter alone. Article in Journal/Newspaper Pacific oyster Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Pacific Marine Environmental Research 68 3 97 105 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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English |
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Oysters |
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Oysters Christie, J.C. Bendell, L.I. Sources of dietary cadmium to the Pacific oyster |
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Oysters |
description |
International audience Oysters from the Pacific north-west coast contain high cadmium concentrations (greater than 13.5 μg g dry weight), which exceed consumer guidelines for international markets. Oysters are selective filter-feeders and attempts which have focused on suspended particulate matter (SPM) as a means to assess the importance of diet as a route of cadmium exposure have met with limited success. Here we use actual gut contents as an alternate to SPM to assess if this is a better predictor of cadmium exposure to the oyster via the diet. We also applied stable isotope analysis, δC and δN, to determine the origin of organic material (from terrestrial to oceanic) ingested by the oyster. Oyster gut and tissue cadmium concentrations and corresponding isotopic signatures were determined every two-three months for 22 months from 10 locations on the west coast of B.C. Gut and tissue cadmium concentrations were correlated (r=0.40; p < 0.05), suggesting that diet could account for at least 40% of observed cadmium oysters residues. Oyster gut and tissue cadmium concentrations and δC and δN signatures were region dependent. Oysters from the most marine influenced sites contained gut and tissue cadmium residues of 30.4±3.08 (S.E.) μg g and 6.0±0.6 μg g, respectively, and a stable isotopic signature typical of marine phytoplankton. In contrast, oysters sampled from regions influenced by coastal processes contained significantly greater concentrations of cadmium, 43.0 ± 2.4 μg g and 10.2 ± 0.68 μg g gut and tissue respectively with isotopic signatures representative of terrestrial organic matter. This indicates that diet is an important source of cadmium to oysters from the Pacific north-west, however its importance is region dependent and cannot be simply ascribed to one source of organic matter alone. |
author2 |
Department of Biological Sciences Burnaby Simon Fraser University (SFU.ca) |
format |
Article in Journal/Newspaper |
author |
Christie, J.C. Bendell, L.I. |
author_facet |
Christie, J.C. Bendell, L.I. |
author_sort |
Christie, J.C. |
title |
Sources of dietary cadmium to the Pacific oyster |
title_short |
Sources of dietary cadmium to the Pacific oyster |
title_full |
Sources of dietary cadmium to the Pacific oyster |
title_fullStr |
Sources of dietary cadmium to the Pacific oyster |
title_full_unstemmed |
Sources of dietary cadmium to the Pacific oyster |
title_sort |
sources of dietary cadmium to the pacific oyster |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.archives-ouvertes.fr/hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077/document https://hal.archives-ouvertes.fr/hal-00563077/file/PEER_stage2_10.1016%252Fj.marenvres.2009.04.008.pdf https://doi.org/10.1016/j.marenvres.2009.04.008 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Pacific oyster |
genre_facet |
Pacific oyster |
op_source |
ISSN: 0141-1136 EISSN: 1879-0291 Marine Environmental Research https://hal.archives-ouvertes.fr/hal-00563077 Marine Environmental Research, Elsevier science, 2009, 68 (3), pp.97. ⟨10.1016/j.marenvres.2009.04.008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.marenvres.2009.04.008 hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077 https://hal.archives-ouvertes.fr/hal-00563077/document https://hal.archives-ouvertes.fr/hal-00563077/file/PEER_stage2_10.1016%252Fj.marenvres.2009.04.008.pdf doi:10.1016/j.marenvres.2009.04.008 |
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info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.marenvres.2009.04.008 |
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Marine Environmental Research |
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68 |
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3 |
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97 |
op_container_end_page |
105 |
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