Harmful Algal Information System: Event PT-90-002

General Information

Event name:	PT-90-002
Country:	PORTUGAL
Nature of the harmful event:	Seafood toxins
Event directly affected:	Shellfish
Toxicity detected:	Yes (Approximate range: 1,221.4 MU)
Associated syndrome:	PSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	Yes (Since 1986 there are PSP occurrences due to Gymnodinium catenatum.)
Individuals to contact:	SAMPAYO, Mª Antonia

Location:	Latitude: , Longitude:
General location information:	Vouga estuary and Coastal zone., Aveiro. HAB Area code(s): PT-02
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	Vouga estuary: September - October. Costal zone: August - October.

Causative organism known:	Yes
Causative Species/Genus:	Gymnodinium catenatum (106,000 cells/L) at Vouga estuary Gymnodinium catenatum (4,500 cells/L) at coastal zone
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: 18 °C, Min: 15 °C

Salinity Range During Event:

Max: 35, Min: 30

Bloom location in the water column:

Growth:

Advected
In situ

Growth Comments

Probably

Additional Environmental information:

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Molluscs (Vouga Estuary)	Saxitoxins		1,221.4 MU	Bioassay-Mouse
Molluscs (coastal zone)	Saxitoxins		254.1 MU	Bioassay-Mouse

Kit used: No

Type of kit used:

Additional information:

Economic losses:

Management decision:

Shellfish fisheries closed: April - November due to DSP

Additional harmful effect information:

All bivalve molluscs affected. No human illnesses

Checked at 05:37 on 22 Feb 2018