Harmful Algal Information System: Event PT-94-003

General Information

Event name:	PT-94-003
Country:	PORTUGAL
Nature of the harmful event:	Seafood toxins
Event directly affected:
Toxicity detected:	Yes (Approximate range: 146 µg STXeq / 100 g.)
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, with a break in 1991, G. Catenatum has been the responsible species for PSP at the Portuguese coastal zone. In 1993 and 1994 all the coast has been affected beginning by the south and spreading to the north.)
Individuals to contact:	SAMPAYO, Mª Antonia , VILARINHO, Mª da Graça

Location:	Latitude: , Longitude:
General location information:	Arado estuary., Portimao. HAB Area code(s): PT-06
Additional location information:
Bloom event dates (yyyy/mm/dd):
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	November.

Causative organism known:	Yes
Causative Species/Genus:	Gymnodinium catenatum (2,000 cells/L) Aug. 18.
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: 20 °C, Min: 14 °C

Salinity Range During Event:

Max: 36, Min: 20

Bloom location in the water column:

Growth:

Advected
In situ

Growth Comments

A combination of both.

Additional Environmental information:

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Ruditapes decussata & Cerastoderma edule	Saxitoxins	STX eq	146	Bioassay-Mouse

Kit used: No

Type of kit used:

Additional information:

Economic losses:

Management decision:

Bivalve species with PSP values over 80 µg/100g closed to harvest.

Additional harmful effect information:

Checked at 05:36 on 22 Feb 2018