Occurrence of diarrhetic shellfish poisoning (DSP) toxins in clams (Ruditapes decussatus) from Tunis north lagoon.

Summary of "Occurrence of diarrhetic shellfish poisoning (DSP) toxins in clams (Ruditapes decussatus) from Tunis north lagoon."

The main diarrhetic shellfish toxins, okadaic acid (OA) and dinophysistoxin-1, 2 (DTX-2, 2) were detected by liquid chromatography-tandem mass spectrometry (LC-MS/MS) as pyrenacyl esters in clams (Ruditapes decussatus) collected in Tunis north lagoon from January 2007 to June 2008. Sample analyses by LC-MS/MS displayed OA and related congeners (DTX-2, 2) with a highest detected level of 21 μg OA eq/kg shellfish meat for the samples of January 2007. Nevertheless, all samples were MBA negative. During the study period, potentially toxic dinoflagellate Dinophysis sacculus was recorded all year, blooming at different times. Highest concentrations were recorded during January 2007 with 4.6 × 10(4) cells per liter and 4.10(4) cells per liter in the northern and southern districts, respectively. Results show that there is no significant correlation between D. sacculus densities in water column and diarrhetic shellfish poisoning (DSP) toxins concentrations unregistered in clams. These data reveal that DSP toxicity in clams of Tunis north lagoon is low according to European regulatory limit (160 μg OA eq/kg shellfish meat). However, a potential threat, in this area, is represented by DSP toxic species as D. sacculus and provides grounds for widen and reinforcing sanitary control of the phycotoxin measures in the region.


Laboratoire du Milieu Marin, Institut National des Sciences et Technologies de la Mer, Centre la Goulette, Port de Pêche, 2060, Tunisia,

Journal Details

This article was published in the following journal.

Name: Environmental monitoring and assessment
ISSN: 1573-2959


DeepDyve research library

PubMed Articles [2979 Associated PubMed Articles listed on BioPortfolio]

Development and validation of a lateral flow immunoassay (LFIA) for the rapid screening of okadaic acid and all dinophysis toxins from shellfish extracts.

A single-step lateral flow immunoassay (LFIA) was developed and validated to detect okadaic acid (OA) and dinophysis toxins (DTX), which cause diarrhetic shellfish poisoning (DSP). The performance cha...

Native and introduced clams biochemical responses to salinity and pH changes.

By the end of year 2100 physiological and biochemical performance of aquatic organisms are expected to become strongly affected by salinity and pH shifts, which in turn may favor the conditions for in...

Bioaccumulation of Trace Metals in Mussel (Mytilus galloprovincialis) from Mali Ston Bay during DSP Toxicity Episodes.

The Croatian National Monitoring Program revealed the presence of Diarrhetic Shellfish Poisoning (DSP) toxicity in Mediterranean blue mussel (Mytilus galloprovincialis) from breeding farms in southern...

Algal toxin profiles in Nigerian coastal waters (Gulf of Guinea) using passive sampling and liquid chromatography coupled to mass spectrometry.

Algal toxins may accumulate in fish and shellfish and thus cause poisoning in consumers of seafood. Such toxins and the algae producing them are regularly surveyed in many countries, including Europe,...

Early Genotoxic and Cytotoxic Effects of the Toxic Dinoflagellate Prorocentrum lima in the Mussel Mytilus galloprovincialis.

Okadaic acid (OA) and dinophysistoxins (DTXs) are the main toxins responsible for diarrhetic shellfish poisoning (DSP) intoxications during harmful algal blooms (HABs). Although the genotoxic and cyto...

Clinical Trials [654 Associated Clinical Trials listed on BioPortfolio]

Outcome Following Carbon Monoxide Poisoning in Children

Carbon monoxide poisoning is common. Many adults with CO poisoning have long-term, even permanent brain injury following poisoning. However, very little is known about the long-term outcom...

Botulinum Toxin for the Treatment of Involuntary Movement Disorders

Botulism is a severe form of food poisoning caused by bacteria. This bacteria produces several toxins one of which is botulinum toxin A. This toxin causes the symptoms of food poisoning....

Infectivity of Norovirus in Shellfish Treated With High Hydrostatic Pressure Processing-Human Challenge Study

Norwalk virus and related "Norwalk-like viruses" are the most common cause of outbreaks of stomach sickness (nausea, vomiting, diarrhea) in older children and adults in the United States. ...

Study to Know the Efficacy of Higher Doses of Pralidoxime in Patients of Organophpsphorus Poisoning.

The purpose of this study is to determine whether high doses of pralidoxime(PAM) are effective as compare to lower doses of PAM in the management of moderately sever organophosphorus poiso...

StO2 Performance Measured on Admission to the Emergency Department in the Assessment of Drug Poisoning

The primary purpose of the protocol is to evaluate the StO2 performance measured at the admission to the emergency department to identify hemodynamic failure at the admission or within the...

Medical and Biotech [MESH] Definitions

Poisoning from toxins present in bivalve mollusks that have been ingested. Four distinct types of shellfish poisoning are recognized based on the toxin involved.

Poisoning by staphylococcal toxins present in contaminated food.

Poisoning caused by the ingestion of mycotoxins (toxins of fungal origin).

A compound that contains a reduced purine ring system but is not biosynthetically related to the purine alkaloids. It is a poison found in certain edible mollusks at certain times; elaborated by GONYAULAX and consumed by mollusks, fishes, etc. without ill effects. It is neurotoxic and causes RESPIRATORY PARALYSIS and other effects in MAMMALS, known as paralytic SHELLFISH poisoning.

Poisoning caused by ingestion of SEAFOOD containing microgram levels of CIGUATOXINS. The poisoning is characterized by gastrointestinal, neurological and cardiovascular disturbances.

Quick Search

DeepDyve research library

Searches Linking to this Article