| Event name: | US-95-009 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Seafood toxins | |
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Event directly affected: |
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| Toxicity detected: | Yes (Approximate range: 700 µg STXeq / 100 gr.) | |
| 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 (1927, '29, '32, '54, '62-'66, '70, '71, '76, '80-'84, '86-'95.) | |
| Individuals to contact: | ROSS, Maria R. | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Marin County., California. HAB Area code(s): US-21 |
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| Additional location information: | Drakes Bay, Chimney Rock, Kehoe Beach, Rodeo Beach, Drakes Esteron, Muir Beach, Tomales Bay. | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | April-May, July- December. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Alexandrium catenella
( cells/L)
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | Ref: State of California Department of Health Services (SCDHS). Shellfish Monitoring Program Technical Reports 95-05 thru -10, -15 thru -20, -22, -23, -25 thru -28, -30 thru -33. | |
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: |
Advected
In situ |
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| Growth Comments | Although difficult to assess it is probable that both in situ and advected populations contributed to the high phytoplankton population. | |||||||||||||||||||||||||
| Additional Environmental information: | No data available. | |||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | |||||||||||
| Additional information: | Low but detectable levels of PSP toxin in sentinel mussel tissue during April, May, Sept. thru Dec. In July toxin levels at Chimney Rock, Drakes Bay increased to 700 µg, at Drakes Estero PSP concentration was 420 µg, in Tomales Bay 130 µg, and Rodeo Beach mussel samples assayed at 240 µg/100 g tissue. | |||||||||||
| Economic losses: | ||||||||||||
| Management decision: | The annual quarantine on sport harversting of mussels was put in effect on May 1, 1995 and continued until October 31, 1995. | |||||||||||
| Additional harmful effect information: | ||||||||||||
