Harmful Algal Information System: Event ZAF-99-002

General Information

Event name:	ZAF-99-002
Country:	SOUTH AFRICA
Nature of the harmful event:	Seafood toxins , Mass mortalities
Event directly affected:	Shellfish , Humans
Toxicity detected:	Yes (Approximate range: 1609 痢 STX eq 100g)
Associated syndrome:	PSP
Unexplained toxicity:	No
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme:	Yes
Event occurred before in this location:	Yes
Individuals to contact:	MANSFIELD, Lisa , SCHWEIBOLD Laura

Location:	Latitude: -32.783333, Longitude: 17.883333
General location information:	Paternoster, West coast HAB Area code(s): ZAF-01
Additional location information:	Abalones were tested from St Helena Bay to Cape Bay, with declined toxicity from St Helena to Cape.
Bloom event dates (yyyy/mm/dd):	Event Date:1999-04-01
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:

Causative organism known:	Yes
Causative Species/Genus:	Alexandrium catenella ( cells/L)
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known:	µg/l
Additional bloom information:
Event-related bibliography:	Pitcher G. C. et al, 2001. Paralytic shellfish poisoning in the abalone Haliotis midae on the west coast of south Africa. Journal of Shellfish Research, vol.20 n.2: 895-904.

Nutrient information:

Temperature Range During Event:

Max: °C, Min: °C

Salinity Range During Event:

Bloom location in the water column:

Growth:

Growth Comments

Additional Environmental information:

Species containing the toxin	Toxin type	Toxin details	Max. concentration	Assay type
Alexandrium catenella	Saxitoxins	STX eq	1609 痢 STX eq 100g	Bioassay-Mouse

Kit used:

Type of kit used:

Additional information:

Economic losses:

Management decision:

Additional harmful effect information:

large number of detached or paralyzed abalone, some mortalities experienced, larvae malformations

Created at 02:42 on 6 Dec 2019