General Information

Event name: AR-11-005
Nature of the harmful event:
Seafood toxins
Event directly affected:
Toxicity detected: Yes (Approximate range: 200 ug STX eq 100 g-1)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Mytilus edulis
Report the outcome of a monitoring programme: Yes (Secretaría de Pesca y Acuicultura)
Event occurred before in this location: Yes
Individuals to contact: Diego Luis Marzioni , Irene Schloss , Marcelo Hernando

Location & Date

[View larger map]
Location: Latitude: , Longitude:
General location information: Bahía Brown, Canal Beagle
HAB Area code(s): AR-35
Additional location information:
Bloom event dates (yyyy/mm/dd): Event Date:2011-02-02
Start: 2011-01-20, End: 2011-02-28
Quarantine levels dates (yyyy/mm/dd): First detection: 2011-02-02,
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium acatenella (500 cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: µg/l
Additional bloom information:
Event-related bibliography: . Schloss I. Gemita Pizarro, Andreana M. Cadaillon, Ricardo Giesecke, Marcelo P. Hernando, Gaston O. Almando, Maite P. Latorre, Andrea Malits, Ximena Flores-Melo, Leonardo A. Saravia, Jacobo Martín, Leonardo Guzmán. Alexandrium catenella dynamics and paralytic shellfish toxins distribution along the Beagle Channel (southern Patagonia). Journal of Marine Systems (2023) 239, 103856

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 8 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 31 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Kit used: No Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 06:20 on 3 Feb 2023
Updated at 06:27 on 3 Feb 2023