General Information

Event name: IE-87-001
Country: IRELAND
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: Positive to DSP.)
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 (DSP in 1984.)
Individuals to contact: CLARKE, Dave

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Roaringwater Bay, Dunmanus Bay, Bantry Bay, K, SOUTH WEST COAST.
HAB Area code(s): IE-04
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:1987-08-17
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: July - December.


Causative organism known: Yes
Causative Species/Genus: Dinophysis acuminata (6,160 cells/L)
in single discrete sample taken on 17 August
Dinophysis acuta (19,760 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information: D. acuminata: other counts in range 50 - 2,000 cells/L. Mostly less than 500 cells/L while toxicity persisted.
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 Comments Mussel longlines in sheltered bays.
Additional Environmental information: Temperature 14 C July - 10 C December. Salinity not measured. No other physical measurements taken. Water coloration - no evident change.

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Mussels Okadaic Acid Positive Bioassay-Rat
Kit used: Type of kit used:
Additional information: DSP in mussels on suspended rope culture at all depths. Maximum toxicity Rat bioassay (+++)
Economic losses:
Management decision: Areas closed for sales of bivalve molluscs until areas clean for at least two successive weeks. All areas except Ventry clear by 27 November. Ventry clear 11 December.
Additional harmful effect information:
Updated at 04:25 on 24 Apr 2018
Checked at 04:32 on 22 Apr 2013