| Event name: | US-06-002 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
High Phyto concentration , Mass mortalities | |
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Event directly affected: |
Shellfish , Aquatic Mammals | |
| Toxicity detected: | Yes (Approximate range: 1-169 ug/g tissue) | |
| Associated syndrome: | ASP | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | ||
| Report the outcome of a monitoring programme: | Yes (CA Department of Health Services Marine Biotoxin Monitoring Program) | |
| Event occurred before in this location: | Yes (Early spring/early summer event in central/southern CA typical over the past several 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. Santa Barbara, Ventura, LA, and Orange Counties (19): South of Pt Conception | |
| Bloom event dates (yyyy/mm/dd): | Start: 2006-03-01, End: 2006-04-01 | |
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | 1. March: Elevated DA levels in mussels from SB (22 ppm), lobster viscera from Channel Islands (70 ppm), and sardines (viscera) from LA/Orange region. Low DA levels persisted at a number of sites through April, with mussels from an oil platform off of LA/Orange exceeding the alert level (20 ppm). Santa Barbara and Ventura counties, offshore near Channel Islands: alert levels of DA in lobster viscera in December (169 ppm). | |
| 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: Samples from volunteer monitoring network caught dramatic increase in Pseudo-nitzchia from Feb to March along the Southern California coast. Numbers declined but this diatom remained a common member of the phytoplankton | |
| 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 | ||||||||||||||||||||||||||
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| Kit used: Yes | Type of kit used: Jellet rapid extraction kit us | |||||||||||
| Additional information: | HPLC | |||||||||||
| Economic losses: | ||||||||||||
| Management decision: | Harvest closures in commercial aquaculture areas; Health Advisory for sportharvested shellfish and viscera of sardine, anchovy, crab and lobster in Southern California. | |||||||||||
| Additional harmful effect information: | ||||||||||||
