| Event name: | US-05-001 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
High Phyto concentration , Seafood toxins , Mass mortalities | |
|
Event directly affected: |
Shellfish , Aquatic Mammals | |
| Toxicity detected: | Yes (Approximate range: 31 - 290 ug/g tissue) | |
| Associated syndrome: | ASP | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (California Department of Health Services Marine Biotoxin Monitoring Program) | |
| Event occurred before in this location: | Yes (Late spring/early summer event in central/southern California typical over the past four years) | |
| Individuals to contact: | LANGLOIS, Gregg | |
| Location: | Latitude: , Longitude: | |
| General location information: |
California, South Coast, Central Coast, Northern Coast HAB Area code(s): US-19 US-20 US-21 |
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| Additional location information: | 1. Offshore of Santa Barbara County (19) and Ventura County.: South of Pt. Conception 2. Humboldt County (21): Northern California. 3. Del Norte County, Northern California, borders Oregon. | |
| Bloom event dates (yyyy/mm/dd): | Start: 2005-03-01, End: 2005-07-01 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | 1. Santa Barbara: DA levels low to moderate (2-15 ppm) throughout June at site .75 miles offshore.exceed alert level by late April through early May: 87 ppm in mussels and 26 ppm in pacific oysters. Santa Barbara and Ventura counties, offshore near Channel Islands: alert levels of DA in lobster viscera in October (290 ppm) 2. Del Norte County: DA concentration above alert level detected by mid October: 42 ppm in mussels. | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Pseudo-nitzschia spp.
( cells/L)
|
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | 1. Santa Barbara/Ventura counties: Evidence of persistent offshore bloom of Pseudo-nitzschia in samples from volunteer network. Low cell numbers at near shore sites. DA toxin levels mirrored this pattern. | |
| Event-related bibliography: | Monthly/Annual reports issued by CDHS Marine Biotoxin Monitoring Program. | |
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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: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: Yes | Type of kit used: Jellet rapid extraction kit us | ||||||||||||||||||||||||||
| Additional information: | |||||||||||||||||||||||||||
| Economic losses: | |||||||||||||||||||||||||||
| Management decision: | Harvest closures in commercial aquaculture areas; Health Advisory for sportharvesting of shellfish in Northern California. | ||||||||||||||||||||||||||
| Additional harmful effect information: | HPLC | ||||||||||||||||||||||||||
