General Information

Event name: MY-01-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Seafood toxins
Event directly affected:
Toxicity detected: Yes
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): benthic clam (Polymesoda similis)
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: Leaw, Chui Pin , Lim, Po Teen

Location & Date

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Location: Latitude: 6.224722, Longitude: 102.109167
General location information: Sungai Geting, Kelantan
HAB Area code(s): MY-1
Additional location information: Semi-enclosed lagoon
Bloom event dates (yyyy/mm/dd): Event Date:2001-09-16
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium minutum ( cells/L)
Co-Ocurring Species/Genus: Skeletonema costatum ( cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: Lim PT, Leaw CP, Usup G. 2004. First paralytic shellfish poisoning in the east coast of Peninsula Malaysia. In Phang, S. M., Chong, V. C., Ho, S. S., Mokhtar, N., Ooi, J. L. S. (eds.) Marine Science into New Millennium: New perspectives and challenges. University of Malaya, Maritime Research Center, Kuala Lumpur, pp. 661-667.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Alexandrium minutum Saxitoxins STX eq 2 pg/cell LC-FD
Polymesoda similis Saxitoxins STX eq 3 mg/100g LC-FD
Kit used: Type of kit used:
Additional information:
Economic losses: Six hospitalized, 1 fatality
Management decision: Ban of clam collection
Additional harmful effect information:
Created at 07:12 on 20 Oct 2019
Updated at 10:57 on 20 Oct 2019