Harmful Algal Information System: Event FR-93-017

General Information

Event name:	FR-93-017
Country:	FRANCE
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes
Associated syndrome:
Unexplained toxicity:	Yes
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	Yes (Such a toxicity episode was recorded in November and December 1992, in Pertuis Breton (site 065).)
Individuals to contact:	SCHWEIBOLD Laura

Location & Date

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Location:	Latitude: , Longitude:
General location information:	, From LOIRE to GIRONDE and SOUTH ATLANTIC COAS HAB Area code(s): FR-09
Additional location information:	All sites from Pertuis Breton (065) to Arcachon Basin (077). Area 5-6.
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	February.

Microalgae

Causative organism known:	No
Causative Species/Genus:
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:	No toxic or harmful species, and no very abundant species.
Event-related bibliography:

Environmental Conditions

Weather:		Turbidity (NTU):	Wind direction:
Stratified water:	No	Oxygen content (nL/L):	Wind velocity:
Temperature (°C):		Oxygen saturation %:	Current Direction:
Sechhi disk (m):		Salinity:	Current Velocity:	0

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Growth Comments

Additional Environmental information:

Toxin Assay Information

Species containing the toxin

Toxin type

Toxin details

Max. concentration

Assay type

Kit used:

Type of kit used:

Additional information:

Very rapid mortalities of mice with acetone extract of shellfish digestive gland, despite of the absence of toxic phytoplankton species. No SDP, and no PSP toxins were found by HPLC analysis. The event was very short.

Economic losses:

Management decision:

Ban of shellfish marketing, form February 2 to February 17.

Additional harmful effect information:

Updated at 02:15 on 3 Dec 2019