General Information

Event name: NI-12-001
Nature of the harmful event:
Water Discoloration , High Phyto concentration
Event directly affected:
Natural Fish
Toxicity detected: No
Associated syndrome:
Unexplained toxicity: No
Species implicated in toxin transmission (transvector): ----
Report the outcome of a monitoring programme: No
Event occurred before in this location: No
Individuals to contact: Jesus Marin Ruiz , Gutierrez Ronaldo , Vammen, katherine

Location & Date

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Location: Latitude: 13.099444, Longitude: 87.575278
General location information: Fonseca Gulf, Department of Chinandega, Nicaragua, Central america
HAB Area code(s): NI-01
Additional location information: Fishermen in the area very alarmed by the intense reddish brown color of the water (approximately 25 km2)the low effort of catching fish, notified the authorities of the Ministry of Health and the Fisheries Institute.
Bloom event dates (yyyy/mm/dd): Event Date:2012-04-20
Start: 2012-04-12, End: 2012-04-23
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information: Bloom event associated with Cochlodinium.


Causative organism known: Yes
Causative Species/Genus: Cochlodinium polykrikoides (---- cells/L)
Co-Ocurring Species/Genus: Skeletonema sp. (-- cells/L)
Coscinodiscus sp. (-- cells/L)
Prorocentrum sp. (--- cells/L)
Hemiaulus sp. (--- cells/L)
Scrippsiella sp. (--- cells/L)
Hemiaulus sp. (--- cells/L)
Chlorophyll concentration, if known: -- µg/l
Additional bloom information: The bloom of Cochlodinium polykrikoides is the first event registered in the Fonseca Gulf.
Event-related bibliography: The Naval located in Potosí, Chinandega, issued an over flight report in Punta Cosigüina in the Pacific to verify what was the reddish brown color of the water.

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: Low catch of fish therefore decrease in economic income of fishermen.
Management decision:
Additional harmful effect information:
Created at 09:01 on 26 Feb 2018