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

23:07 EDT 28th March 2015 | BioPortfolio

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, armi_zina@yahoo.fr.

Journal Details

This article was published in the following journal.

Name: Environmental monitoring and assessment
ISSN: 1573-2959


PubMed Articles [2862 Associated PubMed Articles listed on BioPortfolio]

Detection, occurrence and monthly variations of typical lipophilic marine toxins associated with diarrhetic shellfish poisoning in the coastal seawater of Qingdao City, China.

In recent years, related research has mainly examined lipophilic marine toxins (LMTs) in contaminated bivalves or toxic algae, whereas the levels of LMTs in seawater remain largely unexplored. Okadaic...

Synthesis and biology of cyclic imine toxins, an emerging class of potent, globally distributed marine toxins.

Covering: up to August 2014From a small group of exotic compounds isolated only two decades ago, Cyclic Imine (CI) toxins have become a major class of marine toxins with global distribution. Their dis...

Occurrence of Norovirus and Hepatitis A Virus in Wild Mussels Collected from the Baltic Sea.

The aim of the study was to define the occurrence of human noroviruses of genogroup I and II (NoV GI and NoV GII) and hepatitis A virus (HAV) in the Baltic Sea mussels. The shellfish samples were tak...

Vibrio cholerae, V. vulnificus, and V. parahaemolyticus Abundance in Oysters (Crassostrea virginica) and Clams (Mercenaria mercenaria) from Long Island Sound.

Vibriosis is a leading cause of seafood-associated morbidity and mortality in the United States. Typically associated with consumption of raw or undercooked oysters, vibriosis associated with clam con...

Potential Threats Posed by New or Emerging Marine Biotoxins in UK Waters and Examination of Detection Methodology Used in Their Control: Brevetoxins.

Regular occurrence of brevetoxin-producing toxic phytoplankton in commercial shellfishery areas poses a significant risk to shellfish consumer health. Brevetoxins and their causative toxic phytoplankt...

Clinical Trials [477 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...

Uremic Toxins of Patients With Acute Kidney Failure

Determination of the concentration of uremic toxins of sepsis patients with or without acute kidney failure compared to the concentrations of uremic toxins of chronically uremic patients

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.

Search BioPortfolio:

Searches Linking to this Article