Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem
Diarrhetic shellfish poisoning (DSP) poses a significant threat to the safe consumption of shellfish in the southern Benguela ecosystem. The accumulation of DSP toxins was investigated in two cultivated bivalve species, the Pacific oyster Crassostrea gigas and the mussel Choromytilus meridionalis, s...
Published in: | African Journal of Marine Science |
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Online Access: | https://epic.awi.de/id/eprint/24885/ https://epic.awi.de/id/eprint/24885/1/Pitcher_2011.pdf https://hdl.handle.net/10013/epic.38296 https://hdl.handle.net/10013/epic.38296.d001 |
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ftawi:oai:epic.awi.de:24885 2023-05-15T15:57:58+02:00 Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem Pitcher, G. C. Krock, Bernd Cembella, Allan 2011-10 application/pdf https://epic.awi.de/id/eprint/24885/ https://epic.awi.de/id/eprint/24885/1/Pitcher_2011.pdf https://hdl.handle.net/10013/epic.38296 https://hdl.handle.net/10013/epic.38296.d001 unknown https://epic.awi.de/id/eprint/24885/1/Pitcher_2011.pdf https://hdl.handle.net/10013/epic.38296.d001 Pitcher, G. C. , Krock, B. orcid:0000-0003-4022-9101 and Cembella, A. (2011) Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem , African Journal of Marine Science., 33 (2), pp. 273-281 . doi:10.2989/1814232X.2011.600372 <https://doi.org/10.2989/1814232X.2011.600372> , hdl:10013/epic.38296 EPIC3African Journal of Marine Science., 33(2), pp. 273-281, ISSN: 1814-232X Article isiRev 2011 ftawi https://doi.org/10.2989/1814232X.2011.600372 2021-12-24T15:35:16Z Diarrhetic shellfish poisoning (DSP) poses a significant threat to the safe consumption of shellfish in the southern Benguela ecosystem. The accumulation of DSP toxins was investigated in two cultivated bivalve species, the Pacific oyster Crassostrea gigas and the mussel Choromytilus meridionalis, suspended from a mooring located off Lambert’s Bay on the west coast of South Africa. The dinoflagellate Dinophysis acuminata, a known source of polyether toxins associated with DSP, was common through most of the study period. The toxin composition of the dinoflagellate was dominated by okadaic acid (OA) (91%), with lesser quantities of the dinophysistoxin DTX-1 (6.5%) and pectenotoxin PTX-2 (2.4%), and traces of PTX-2sa and PTX-11. The mean cell toxin quota of D. acuminata was 7.8 pg OA cell–1. The toxin profile in shellfish was characterised by a notably higher relative content of DTX-1. The study showed the average concentration of DSP toxins in the mussels to exceed that in the oysters by approximately 20-fold. The results indicate a need to establish species-specific sampling frequencies in shellfish safety monitoring programmes. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Pacific African Journal of Marine Science 33 2 273 281 |
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Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Diarrhetic shellfish poisoning (DSP) poses a significant threat to the safe consumption of shellfish in the southern Benguela ecosystem. The accumulation of DSP toxins was investigated in two cultivated bivalve species, the Pacific oyster Crassostrea gigas and the mussel Choromytilus meridionalis, suspended from a mooring located off Lambert’s Bay on the west coast of South Africa. The dinoflagellate Dinophysis acuminata, a known source of polyether toxins associated with DSP, was common through most of the study period. The toxin composition of the dinoflagellate was dominated by okadaic acid (OA) (91%), with lesser quantities of the dinophysistoxin DTX-1 (6.5%) and pectenotoxin PTX-2 (2.4%), and traces of PTX-2sa and PTX-11. The mean cell toxin quota of D. acuminata was 7.8 pg OA cell–1. The toxin profile in shellfish was characterised by a notably higher relative content of DTX-1. The study showed the average concentration of DSP toxins in the mussels to exceed that in the oysters by approximately 20-fold. The results indicate a need to establish species-specific sampling frequencies in shellfish safety monitoring programmes. |
format |
Article in Journal/Newspaper |
author |
Pitcher, G. C. Krock, Bernd Cembella, Allan |
spellingShingle |
Pitcher, G. C. Krock, Bernd Cembella, Allan Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
author_facet |
Pitcher, G. C. Krock, Bernd Cembella, Allan |
author_sort |
Pitcher, G. C. |
title |
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
title_short |
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
title_full |
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
title_fullStr |
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
title_full_unstemmed |
Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem |
title_sort |
accumulation of diarrhetic shellfish poisoning toxins in the oyster crassostrea gigas and the mussel choromytilus meridionalis in the southern benguela ecosystem |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/24885/ https://epic.awi.de/id/eprint/24885/1/Pitcher_2011.pdf https://hdl.handle.net/10013/epic.38296 https://hdl.handle.net/10013/epic.38296.d001 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
EPIC3African Journal of Marine Science., 33(2), pp. 273-281, ISSN: 1814-232X |
op_relation |
https://epic.awi.de/id/eprint/24885/1/Pitcher_2011.pdf https://hdl.handle.net/10013/epic.38296.d001 Pitcher, G. C. , Krock, B. orcid:0000-0003-4022-9101 and Cembella, A. (2011) Accumulation of diarrhetic shellfish poisoning toxins in the oyster Crassostrea gigas and the mussel Choromytilus meridionalis in the southern Benguela ecosystem , African Journal of Marine Science., 33 (2), pp. 273-281 . doi:10.2989/1814232X.2011.600372 <https://doi.org/10.2989/1814232X.2011.600372> , hdl:10013/epic.38296 |
op_doi |
https://doi.org/10.2989/1814232X.2011.600372 |
container_title |
African Journal of Marine Science |
container_volume |
33 |
container_issue |
2 |
container_start_page |
273 |
op_container_end_page |
281 |
_version_ |
1766393683094011904 |