Detection of <i>Dinophysis</i> species and associated okadaic acid in farmed shellfish: a two-year study from the western Mediterranean area

Bazzoni, Anna Maria; Mudadu, Alessandro Graziano; Lorenzoni, Giuseppa; Soro, Barbara; Bardino, Nadia; Arras, Igor; Sanna, Giovanna; Vodret, Bruna; Bazzardi, Riccardo; Marongiu, Edoardo; Virgilio, Sebastiano

doi:10.2478/jvetres-2018-0022

Cited by 24 publications

(27 citation statements)

References 27 publications

(26 reference statements)

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“…Many authors have reported and analysed the possible causes of the discrepancy between the values for toxicity in molluscs and the abundance of microalgae [24,32,33,34]. The causes mainly proposed are the presence of alternative food, environmental factors, the stratification of the water column that favours the development of thin layers of microalgae, or the variability in the toxin content per cell.…”

Section: Discussionmentioning

confidence: 99%

Dinophysis Species and Diarrhetic Shellfish Toxins: 20 Years of Monitoring Program in Andalusia, South of Spain

Fernández

Mamán

Jaén

et al. 2019

Toxins

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In Andalusia, the official monitoring program for toxic phytoplankton and marine biotoxins was launched in 1994 to comply with European legislation. Since then, there have been numerous episodes of DST (Diarrhetic shellfish toxins) associated with the proliferation of Dinophysis species. This article reviews two decades of time series data and assesses the effectiveness of the program established. The testing of lipophilic toxins and toxic phytoplankton is based on official methods harmonized and accredited since 2007 according to the standard UNE-EN-ISO 17025. The major species of Dinophysis identified were D. acuminata complex, D. caudata, D. acuta and D. fortii, with the main growth season being from early spring until the end of autumn. Both D. acuminata complex and D. acuta have been clearly associated with toxicity in molluscs. Despite the complexity of data obtained through monitoring programs, it is possible to provide early warning of potential health risks for most situations. This is the first report of Dinophysis species and their relation to DST events in a time series from Andalusia.

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Section: Discussionmentioning

confidence: 99%

Dinophysis Species and Diarrhetic Shellfish Toxins: 20 Years of Monitoring Program in Andalusia, South of Spain

Fernández

Mamán

Jaén

et al. 2019

Toxins

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“…In SGL, during 2015 no algae were detected in each episode of OA accumulation and no data about previous HAS were available (since they were collected only concurrently with OA accumulation over the legal limits). But considering dynamics in FER and data in literature (Bazzoni, et al ., 2018 ), we may hypothesise that algae were present even many weeks before OA accumulation.…”

Section: Discussionmentioning

confidence: 99%

“…The different phases of extraction and analysis with LC-MS/ MS are reported specifically in Bazzoni et al . ( 2018 ).…”

Section: Methodsmentioning

confidence: 99%

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Influence of seasonality on the presence of okadaic acid associated with <em>Dinophysis</em> species: A four-year study in Sardinia (Italy)

et al. 2021

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In Sardinia (Italy), bivalve molluscs production plays an important role in the trade balance. Diarrhoetic shellfish poisoning (DSP), an intoxication caused by the ingestion of bivalve molluscs that have accumulated high levels of Okadaic acid (OA), may represent a serious risk for the public health and a remarkable economic loss for the producers. Aim of this work was to improve knowledge about the repeatability of OA accumulation phenomena in various seasons trying to understand whether or not there was a trend. Also, the interaction between toxic algae and OA accumulation was examined. In this study, data of lipophilic toxins, water temperature and abundance of DSP-producing microalgal species were collected in a four-year period (2015–2018) in coastal production areas of Sardinia. Several episodes of OA positive values (>160 eq μgAO/Kg pe, Reg 853/04) were recorded during the study period in different production areas of Sardinia and in different seasons. A seasonal repeatability of OA accumulation in molluscs was observed in some production areas; moreover, different temporal gaps between the presence of toxic algae and OA accumulation were reported. Toxicity was observed almost exclusively in Mytilus galloprovincialis Lamark (99%), being this matrix the most abundant species bred in Sardinia.

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“…Okadaic acid (OA) is a toxin produced by various species of dinoflagellates and can cause food poisoning in humans after consumption of contaminated molluscs [45]. An automated flow-through electrochemical immunosensor was developed for OA determination in mussel samples.…”

Section: Screen-printed Electrodes (Spes) For Voltammetric Immunosmentioning

confidence: 99%

Disposable Voltammetric Immunosensors Integrated with Microfluidic Platforms for Biomedical, Agricultural and Food Analyses: A Review

Felix

Baccaro

Angnes

2018

Sensors

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Disposable immunosensors are analytical devices used for the quantification of a broad variety of analytes in different areas such as clinical, environmental, agricultural and food quality management. They detect the analytes by means of the strong interactions between antibodies and antigens, which provide concentration-dependent signals. For the herein highlighted voltammetric immunosensors, the analytical measurements are due to changes in the electrical signals on the surface of the transducers. The possibility of using disposable and miniaturized immunoassays is a very interesting alternative for voltammetric analyses, mainly, when associated with screen-printing technologies (screen-printed electrodes, SPEs), and microfluidic platforms. The aim of this paper is to discuss a carefully selected literature about different examples of SPEs-based immunosensors associated with microfluidic technologies for diseases, food, agricultural and environmental analysis. Technological aspects of the development of the voltammetric immunoassays such as the signal amplification, construction of paper-based microfluidic platforms and the utilization of microfluidic devices for point-of-care testing will be presented as well.

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Detection of Dinophysis species and associated okadaic acid in farmed shellfish: a two-year study from the western Mediterranean area

Cited by 24 publications

References 27 publications

Dinophysis Species and Diarrhetic Shellfish Toxins: 20 Years of Monitoring Program in Andalusia, South of Spain

Dinophysis Species and Diarrhetic Shellfish Toxins: 20 Years of Monitoring Program in Andalusia, South of Spain

Influence of seasonality on the presence of okadaic acid associated with <em>Dinophysis</em> species: A four-year study in Sardinia (Italy)

Disposable Voltammetric Immunosensors Integrated with Microfluidic Platforms for Biomedical, Agricultural and Food Analyses: A Review

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