| Event name: | US-11-034 | |
| Country: | UNITED STATES | |
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Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Seafood toxins , Mass mortalities | |
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Event directly affected: |
Natural Fish , Birds , Aquaculture Fish , Other Terrestrial , Shellfish , Humans | |
| Toxicity detected: | Yes | |
| Associated syndrome: | NSP , Aerosolized toxins effects | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | Fish | |
| Report the outcome of a monitoring programme: | No | |
| Event occurred before in this location: | Yes (Texas has K brevis blooms every few years.) | |
| Individuals to contact: | Byrd, Meridith | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Texas coast, from Port Aransas to Mexico border, HAB Area code(s): US-18 |
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| Additional location information: | At one point during the bloom, discolored water and dead fish could be found along over 250 miles of Gulf beach, from San Luis Pass to the Rio Grande, which is the border with Mexico. Major bays/estuaries (with the exception of Sabine Lake) were affected. | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | First detection: 2011-10-05, End: 2012-03-08 | |
| Additional date-related information: | ||
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Karenia brevis
(tens of millions cells/L)
many samples labeled |
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| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
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| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
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| Bloom location in the water column: | ||||||||||||||||||||||||||
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| Kit used: | Type of kit used: | |||||||||||
| Additional information: | The Texas Dept of State Health Services uses a mouse assay in addition to ELISA kits | |||||||||||
| Economic losses: | The Texas oyster industry was hit hard. All 17,586 acres of oyster beds were closed for half the season (Nov 1-Jan 27). In 2009 the oyster industry brought in $9.4 million over the 6-month season. Coastal communities suffered tourism decline. | |||||||||||
| Management decision: | The Texas Dept of State Health Services delayed the opening of oyster season due to brevetoxin levels. All bays were closed until Jan 27, when 2 bays were opened. DSHS continued to open bays through Feb and early March, when the last bays were opened. | |||||||||||
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