A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal
As filter-feeding animals farmed in water bodies exposed to anthropogenic influences, oysters can be both useful bioremediators and high-risk foodstuffs, considering that they are typically consumed raw. Understanding the dynamic of bacterial and viral load in Pacific oyster (Crassostrea gigas) tiss...
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2023
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Online Access: | https://doi.org/10.3390/microorganisms11020338 |
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ftmdpi:oai:mdpi.com:/2076-2607/11/2/338/ 2023-08-20T04:06:04+02:00 A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal Inês C. Rodrigues Nânci Santos-Ferreira Daniela Silva Carla Chiquelho da Silva Ângela S. Inácio Maria São José Nascimento Paulo Martins da Costa agris 2023-01-29 application/pdf https://doi.org/10.3390/microorganisms11020338 EN eng Multidisciplinary Digital Publishing Institute Veterinary Microbiology https://dx.doi.org/10.3390/microorganisms11020338 https://creativecommons.org/licenses/by/4.0/ Microorganisms; Volume 11; Issue 2; Pages: 338 oyster farming waters Escherichia coli salmonella antimicrobial resistance norovirus Text 2023 ftmdpi https://doi.org/10.3390/microorganisms11020338 2023-08-01T08:31:37Z As filter-feeding animals farmed in water bodies exposed to anthropogenic influences, oysters can be both useful bioremediators and high-risk foodstuffs, considering that they are typically consumed raw. Understanding the dynamic of bacterial and viral load in Pacific oyster (Crassostrea gigas) tissues, hemolymph, outer shell surface biofilm, and farming water is therefore of great importance for microbiological risk assessment. A one-year survey of oysters collected from a class B production area (Canal de Mira, on the Portuguese western coast) revealed that these bivalve mollusks have a good depurating capacity with regard to bacteria, as Salmonella spp. and viable enterococci were not detected in any oyster flesh (edible portion) samples, despite the fact that these bacteria have regularly been found in the farming waters. Furthermore, the level of Escherichia coli contamination was clearly below the legal limit in oysters reared in a class B area (>230–≤4600 MPN E. coli/100 g). On the contrary, norovirus was repeatedly detected in the digestive glands of oysters sampled in autumn, winter, and spring. However, their presence in farming waters was only detected during winter. Text Crassostrea gigas Pacific oyster MDPI Open Access Publishing Pacific Mira ENVELOPE(10.500,10.500,-70.417,-70.417) Microorganisms 11 2 338 |
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MDPI Open Access Publishing |
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ftmdpi |
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English |
topic |
oyster farming waters Escherichia coli salmonella antimicrobial resistance norovirus |
spellingShingle |
oyster farming waters Escherichia coli salmonella antimicrobial resistance norovirus Inês C. Rodrigues Nânci Santos-Ferreira Daniela Silva Carla Chiquelho da Silva Ângela S. Inácio Maria São José Nascimento Paulo Martins da Costa A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
topic_facet |
oyster farming waters Escherichia coli salmonella antimicrobial resistance norovirus |
description |
As filter-feeding animals farmed in water bodies exposed to anthropogenic influences, oysters can be both useful bioremediators and high-risk foodstuffs, considering that they are typically consumed raw. Understanding the dynamic of bacterial and viral load in Pacific oyster (Crassostrea gigas) tissues, hemolymph, outer shell surface biofilm, and farming water is therefore of great importance for microbiological risk assessment. A one-year survey of oysters collected from a class B production area (Canal de Mira, on the Portuguese western coast) revealed that these bivalve mollusks have a good depurating capacity with regard to bacteria, as Salmonella spp. and viable enterococci were not detected in any oyster flesh (edible portion) samples, despite the fact that these bacteria have regularly been found in the farming waters. Furthermore, the level of Escherichia coli contamination was clearly below the legal limit in oysters reared in a class B area (>230–≤4600 MPN E. coli/100 g). On the contrary, norovirus was repeatedly detected in the digestive glands of oysters sampled in autumn, winter, and spring. However, their presence in farming waters was only detected during winter. |
format |
Text |
author |
Inês C. Rodrigues Nânci Santos-Ferreira Daniela Silva Carla Chiquelho da Silva Ângela S. Inácio Maria São José Nascimento Paulo Martins da Costa |
author_facet |
Inês C. Rodrigues Nânci Santos-Ferreira Daniela Silva Carla Chiquelho da Silva Ângela S. Inácio Maria São José Nascimento Paulo Martins da Costa |
author_sort |
Inês C. Rodrigues |
title |
A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
title_short |
A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
title_full |
A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
title_fullStr |
A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
title_full_unstemmed |
A One-Year Systematic Study to Assess the Microbiological Profile in Oysters from a Commercial Harvesting Area in Portugal |
title_sort |
one-year systematic study to assess the microbiological profile in oysters from a commercial harvesting area in portugal |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/microorganisms11020338 |
op_coverage |
agris |
long_lat |
ENVELOPE(10.500,10.500,-70.417,-70.417) |
geographic |
Pacific Mira |
geographic_facet |
Pacific Mira |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Microorganisms; Volume 11; Issue 2; Pages: 338 |
op_relation |
Veterinary Microbiology https://dx.doi.org/10.3390/microorganisms11020338 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/microorganisms11020338 |
container_title |
Microorganisms |
container_volume |
11 |
container_issue |
2 |
container_start_page |
338 |
_version_ |
1774716975895805952 |