Harmful algal blooms (HAB) are caused by several species of algae, however, the species Karenia brevis is the most common cause of HAB in the Gulf of Mexico. This small, dinoflagellate algae can be present in high numbers, and concentrations of 100,000 to >1,000,000 cells per liter constitute blooms. In September 2015, a bloom of K. brevis formed in the Gulf of Mexico off Gulf and Bay counties. With recent easterly winds, a westward movement of the bloom could spread the bloom to the Gulf of Mexico waters off Escambia County.
Escambia County collects weekly water samples and sends the samples to Florida Fish and Wildlife Research Institute (FWRI) for analysis. A sample collected at the Pensacola Beach Fishing Pier the week of October 19, 2015, contained no K. brevis (see image).
A more recent sample was collected October 26, and results are expected by Friday, October 30.
In moderate to high concentrations, the toxin (brevetoxin) from K. brevis may cause fish kills and may cause symptoms in humans. Brevetoxins are released into the surrounding seawater, and become associated with small drops of water that may blow ashore. The most common effect to humans on or near beaches is respiratory irritation. Neurotoxic Shellfish Poisoning (NSP) can occur if affected clams, oysters, mussels, etc. are consumed (see attached Fact Sheet).
Escambia County Marine Resources Division (850-595-3474) will continue to monitor the bloom, and will work with FWRI and other agencies to keep the public informed.
Important Telephone Numbers
HAB status reports are available via telephone: 866-300-9399 (Outside Florida, dial 727-552-2448)
To report fish kills: 888-404-3922
Florida Poison Information Center: 800-222-1222
Additional Information
http://myfwc.com/redtidestatus
http://myfwc.com/research/redtide/general/contact/
http://myfwc.com/research/redtide/statewide/
http://www.freshfromflorida.com/Divisions-Offices/Aquaculture
