General Information

Event name: MDG-19-001
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: No
Associated syndrome: Cyanobacterial toxins effects
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Chelonia mydas
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (frequent in Madagascar)
Individuals to contact: QUOD, Jean-Pascal

Location & Date

[View larger map]
Location: Latitude: -20.721667, Longitude: 44.003056
General location information: ,
HAB Area code(s): MAD-01
Additional location information: BELO SUR MER coral reefs
Bloom event dates (yyyy/mm/dd): Event Date:2019-05-08
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Lyngbya spp. ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography:

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:
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: death of 4 people (57 consumers)
Created at 12:20 on 22 May 2019
Updated at 06:34 on 15 Dec 2019