Harmful Algal Information System: Event GB-96-002

General Information

Event name:	GB-96-002
Country:	UNITED KINGDOM
Nature of the harmful event:	Seafood toxins
Event directly affected:
Toxicity detected:	Yes (Approximate range: 976 痢 STXeq /100 g.)
Associated syndrome:	PSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	No
Event occurred before in this location:	Yes (PSP has recurred on the Scottish east coast since 1990, although in different locations. DSP has not previously been detected in this region.)
Individuals to contact:	HOWARD, Godfrey , MACDONALD, Elspeth

Location & Date

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Location:	Latitude: , Longitude:
General location information:	Dornoch Firth., Scotland. North East Coast. HAB Area code(s): GB-22
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	Late April - early July.

Microalgae

Causative organism known:	Yes
Causative Species/Genus:	Dinophysis spp. (2,500 cells/L) from May to September Alexandrium spp. (up to 1,10 cells/L) from May to July
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
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

Not known.

Additional Environmental information:

Toxin Assay Information

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Scallop (April to June)	Saxitoxins	STX eq	232	Bioassay-Mouse
Mussel (May 13th)	Saxitoxins	STX eq	976	Bioassay-Mouse
July	Okadaic Acid		Positive	Bioassay-Mouse

Kit used: No

Type of kit used:

Additional information:

Economic losses:

Management decision:

Voluntary Closure Agreements (VCA) of mussel beds for PSP from May to early July and during July for DSP in Dornoch Firth.

Additional harmful effect information:

PSP in mussels in Dornotch Firth, maximum level 976 痢/100 g on May 13. Declined in June and not detected by early July. DSP detected in same area during July. PSP toxins in offshore scallops to maximal level of 232 痢/100 g from April to July.

Updated at 11:04 on 14 Sep 2016