Effect of environmental factors on microbiological quality of oyster farming in Amazon estuaries

Silva, Osnan Lennon Lameira; Veríssimo, Samara Maria Modesto; Rosa, Adrianne Maria Brito Pinheiro da; Iguchi, Yuri Barbosa; Nunes, Emilía do Socorro Conceição de Lima; Moraes, Carina Martins de; Cordeiro, Carlos Alberto Martins; Xavier, Diego de Arruda; Pinto, Anne Suellen Oliveira; Joele, Maria Regina Sarkis Peixoto; Brito, Joás da Silva; Juen, Leandro; Rocha, Rossineide Martins da

doi:10.1016/j.aqrep.2020.100437

Cited by 8 publications

(4 citation statements)

References 49 publications

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“…They analyzed oysters cultivated in three other cultivation areas located in the municipalities of Curuçá, Augusto Corrêa, and São Caetano de Odivelas, in same region, and observed that the E. coli counts were within acceptable limits. Silva et al (2020) observed the presence of Salmonella spp. in oyster meat from estuaries of the municipalities of Augusto Correa and Curuçá, and 38.33% of the samples were contaminated.…”

Section: Discussionmentioning

confidence: 98%

Microbiological Quality of Oysters From an Estuary in Northeast Pará, Brazil, Before and After Purification Process

Nascimento¹,

Rocha²,

Souza³

et al. 2023

Preprint

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This study evaluated the microbiological quality of farm oysters, cultivated in an estuary in northeastern Pará, Brazil, before and after purification process. Water and oyster samples were collected in June, August, October, and December 2019. Oysters underwent purification for up to 36 h in a small-scale adapted debugger. Microbiological analyses were performed in oysters and water depuration collected at different times of purification (0 h pre-treatment, 6 h, 12 h, 2 4h, and 36 h), using the multiple tube technique, to determine the most probable number (MPN) of Escherichia coli, thermotolerant coliforms - TTC, and total coliforms - TC. Bacterial isolation was used to determine the presence of Salmonella spp. Before purification, oysters had E. coli counts above the limit allowed by Brazilian legislation (≤ 230 MPN/100g). High TTC, and TC counts were observed in all the months of the study, and Salmonella spp. was present in August. All water samples were contaminated by TTC beyond the level allowed (> 43 MPN/100mL) in two months. The purification process of 36 h was effective in reducing the load of E. coli, TTC, and TC and eliminating Salmonella spp. in oysters.

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Section: Discussionmentioning

confidence: 98%

Microbiological Quality of Oysters From an Estuary in Northeast Pará, Brazil, Before and After Purification Process

Nascimento¹,

Rocha²,

Souza³

et al. 2023

Preprint

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“…Although developing countries present few studies on this topic, Brazil has advanced in investigations on bacterial infections (Pereira et al 2007, Ramos et al 2014, Silva et al 2018) due to the increase in aquaculture production in recent years, which in 2018 was 445,000 t, with seafood production corresponding to 4.7% (FAO 2018). Consequently, there has been an increase in diseases caused by consuming contaminated seafood, especially in developing countries (Barbosa et al 2019, Silva et al 2020. Due to the damage caused by pathogenic Escherichia coli strains in these countries, there has been great concern regarding microorganisms in mollusks, mainly due to a lack of basic sanitation and high consumption (Barbosa et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Mapping of the world scientific production on bacterial and fungal microbiota in mollusks

Santos

Soares

Sousa

et al. 2023

Lat. Am. J. Aquat. Res.

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This study aimed to map the world's scientific production of bacterial and fungal microbiota in mollusks. The research was carried out in the Web of Science database, using "Fungi AND Mollusk" and "Bacteria AND Mollusk" descriptors and publication time between 2001 and 2021. Indexes were built by years, countries, research areas, and two maps of the co-occurrence of terms. There was a progressive increase in the production of microbiota in mollusks, with more research on bacteria during the investigated period. China and USA were the countries with the highest percentage of publications. Research with fungi and bacteria accounted for 28.41 and 17.66% in China, respectively. While the USA, the percentage was 21.05% for fungi and 16.02% for bacteria. Areas such as marine and freshwater biology (24.77%), fisheries (23.86%), biochemistry and molecular biology (18.60%), and pharmacy (17.83%) showed a higher percentage of indexed articles. There was also a high concentration of deposits of publications in the immunology area for both themes. The groups formed for bacteria and fungi indicated that studies had described the immune responses of mollusks, the genetic aspects associated with their defense mechanisms, pathogen virulence factors, and symbiotic and pathogenic microbiota, highlighting genera Vibrio, Aspergillus, and Escherichia coli pathogenic pathotypes. The bacterial and fungal microbiota in mollusks have been studied in several areas of knowledge and have given rise to research that can support the proper management of mollusks, application in the pharmaceutical industry, and implementation of measures in public health.

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“…is also imposed in the Philippines by PNS-BAFPS (2011). In the study conducted by Lameira Silva et al (2020), Salmonella spp. was present in the flesh of oyster in all sampling sites in Amazon estuaries in Pará, Brazil irrespective of the seasonal period.…”

Section: Figurementioning

confidence: 98%

Bacteriological quality of cage-cultured abalone Haliotis asinina

Mabuhay-Omar¹,

Cayabo²,

Creencia³

2021

Aquat Res

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Abalone is one of the most highly priced seafood delicacies and prepared in various dishes like breaded, soup, steamed and sashimi. They are susceptible to microbial contamination since it is eaten raw sometimes and pathogenic microorganisms can be hazardous to consumers. The present study was carried out to determine the coliform load and the presence of presumptive pathogenic bacteria in cage-cultured abalone in Taytay, Palawan, Philippines. The study was limited to the detection of coliform and some presumptive pathogenic bacteria in different parts of abalone such as gut, gills and mantle. The result of the study revealed that the count of coliforms present in the mantle and gills of abalone falls within the normal standard limit (7 – 21 MPN 100g-1 sample). On the other hand, the gut of abalone was beyond the standard limit (460 MPN 100g-1 sample). Moreover, the gut of abalone harbors Vibrio spp., Salmonella spp. and Shigella spp. and general enteric bacteria. Foodborne infections caused by Vibrio, Salmonella and Shigella are common in Asia.

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Effect of environmental factors on microbiological quality of oyster farming in Amazon estuaries

Cited by 8 publications

References 49 publications

Microbiological Quality of Oysters From an Estuary in Northeast Pará, Brazil, Before and After Purification Process

Microbiological Quality of Oysters From an Estuary in Northeast Pará, Brazil, Before and After Purification Process

Mapping of the world scientific production on bacterial and fungal microbiota in mollusks

Bacteriological quality of cage-cultured abalone Haliotis asinina

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