What is Cylindrospermopsis?
Cylindrospermopsis raciborskii is from the group of interesting organisms that have characteristics of both simple plants and bacteria and are called cyanobacteria or blue-green algae. This ancient group of algae tolerates a wide range of environmental conditions and has even been found growing in hot springs, Antarctic lakes under permanent ice cover, and extremely salty pools. Some species form dormant cells that can withstand dry or harsh conditions for extended periods of time. A number of blue-green algae species release toxins that can cause death in mammals, birds, and fish and illness in humans. Like others in this group, Cylindrospermopsis produces oxygen by photosynthesis and can fix nitrogen from the air and so can live without relying on nitrogen sources in the water. This particular species grows abundantly (blooms) in subtropical freshwater lakes and rivers with high levels of phosphorus and other nutrients. In recent years, this species has begun replacing other bloom-fo
Cylindrospermopsis raciborskii is a member of the group of algae also called “cyanobacteria” or blue-green algae. Blue-green algae most commonly is associated with summertime blooms in nutrient-enriched waters. Some produce toxins. Cylindro is one of those toxin producers. In addition to fish, it has killed pets and livestock, but no human deaths have been reported in the United States as a result of exposure to Cylindro. People exposed to blue-green algae blooms might experience allergic reactions, skin irritation, stomach aches, diarrhea, ear or eye irritation, and respiratory problems. Children, the elderly and those with compromised immune systems may be more susceptible to the toxin. Cylindro releases the toxin when cells break or die. No taste or odor is associated with the algae or its toxin, but this particular species does create a color that would easily distinguish it from other algae. Cylindro, however, does not form a surface scum. Rather, dense clumps or bands typically g
