General Information

Event name: CR-01-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration , Foam/Mucilage in the coast
Event directly affected:
Natural Fish , Humans
Toxicity detected: Yes (Approximate range: 10.000 up 20.000 MU)
Associated syndrome: PSP
Unexplained toxicity:
Species implicated in toxin transmission (transvector): Spondylus calcifer (oyster)
Report the outcome of a monitoring programme: Yes (Research project of the University of Costa Rica)
Event occurred before in this location: Yes (Gulf of Nicoya)
Individuals to contact: VARGAS MONTERO MARIBELLE

Location & Date

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Location: Latitude: 9.979167, Longitude: -84.860556
General location information: Puntarenas, Gulf of Nicoya
HAB Area code(s): CR-10
Additional location information: The bloom covered all Pacific Coast
Bloom event dates (yyyy/mm/dd): Event Date:2001-09-01
Start: 2001-01-01, End: 2002-03-01
Quarantine levels dates (yyyy/mm/dd): First detection: 2001-01-01, End: 2002-01-01
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Pyrodinium bahamense (10000-60000/L cells/L)
Co-Ocurring Species/Genus: Gymnodinium catenatum ( cells/L)
Trichodesmium erythraeum (Ehrenberg) Gomont 1892 ( cells/L)
Ceratium furca ( cells/L)
Ceratium fusus ( cells/L)
Chlorophyll concentration, if known: µg/l
Additional bloom information: During that time was a brownish bloom event of Trichodesmiun erytraeum
Event-related bibliography: Vargas M. & Freer E. 2002. Paralytic shellfish poisoning outbreaks in Costa Rica. 2004. Harmful Algae 2002.

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Yes 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:
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Spondylus calcifer Saxitoxins 20000 MU Bioassay-Mouse
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information: During january 2001 to march 2002, The Costa Rica government prohibits the extraction of bivalve molluscs for consumption and sale, which affected the economy
Created at 09:26 on 28 Oct 2015
Updated at 02:43 on 29 Oct 2015