Harmful Algal Information System: Event PT-98-001

General Information

Event name:	PT-98-001
Country:	PORTUGAL
Nature of the harmful event:	Seafood toxins
Event directly affected:
Toxicity detected:	Yes (Approximate range: 92 µg OA/ g)
Associated syndrome:	DSP
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 1987, the first year of confirmed occurrence, the problem has occurred every year, with a break in 1993. This year the most affected area was Algarve.)
Individuals to contact:	SAMPAYO, Mª Antonia , VILARINHO, Mª da Graça

Location:	Latitude: , Longitude:
General location information:	Minho Estuary., HAB Area code(s): PT-01
Additional location information:
Bloom event dates (yyyy/mm/dd):	Event Date:1998-09-22
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:	August-November.

Causative organism known:	Yes
Causative Species/Genus:	Dinophysis acuminata (917 cells/L) September 9
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:

Nutrient information:

Temperature Range During Event:

Max: 19 °C, Min: 15 °C

Salinity Range During Event:

Max: 37, Min: 24

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
Mytilus edulis	Okadaic Acid	OA eq	92 µg/g	Bioassay-Mouse

Kit used: No

Type of kit used:

Additional information:

Economic losses:

Management decision:

Harvest of affected areas closed during toxication.

Additional harmful effect information:

DSP toxins were determined both by the mouse bioassay and through HPLC

Checked at 05:33 on 22 Feb 2018