| Event name: | US-24-018 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Seafood toxins , Mass mortalities | |
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Event directly affected: |
Natural Fish , Birds , Shellfish , Aquatic Mammals | |
| Toxicity detected: | Yes (Approximate range: Dungeness crab viscera 8.1 ppm) | |
| Associated syndrome: | ASP | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | Clinical signs consistent with ASP toxicity syndrome observed in marine mammals was attributed to consumption of prey species (e.g., anchovy, sardine, market squid) containing domoic acid. | |
| Report the outcome of a monitoring programme: | Yes (California Department of Public Health - Marine Biotoxin Monitoring Program) | |
| Event occurred before in this location: | Yes | |
| Individuals to contact: | ZUBKOUSKY-WHITE, Vanessa , MURPHY, Shannon | |
| Location: | Latitude: , Longitude: | |
| General location information: |
, HAB Area code(s): US-20 |
|
| Additional location information: | ASP-related illnesses observed in 251 stranded marine mammals (236 California sea lions,12 Northern fur seals, and 3 common dolphins) across the 2 counties listed. Strandings were reported in every month of 2024 except March and Dec in 1 or both counties | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | ||
| Additional date-related information: | ||
| 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: | ||
| Event-related bibliography: | ||
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| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | Whole column | |||||||||||||||||||||||||
| Growth: |
In situ |
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| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
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| Kit used: No | Type of kit used: | ||||||||||||||||
| Additional information: | domoic acid detected (< 30 ppm) October | ||||||||||||||||
| Economic losses: | Brief harvesting closure in Oct. | ||||||||||||||||
| Management decision: | Marine Mammal stranding events were responded to by the marine mammal care and stranding network of California. The California Interagency HAB-related Illness Workgroup tracks HAB-related illnesses and reported these stranding events to OHHABS | ||||||||||||||||
| Additional harmful effect information: | |||||||||||||||||
