Microcystins

Definition

Microcystins are a group of toxins produced by certain freshwater cyanobacteria. They can be harmful to aquatic life and humans, especially when they contaminate drinking water supplies.

5 Must Know Facts For Your Next Test

1. Microcystins are produced by cyanobacteria such as Microcystis aeruginosa.
2. These toxins are stable at high temperatures and cannot be destroyed by boiling.
3. Microcystins primarily affect the liver, but they can also impact other organs, causing severe health issues.
4. They are often released during algal blooms, which occur more frequently in warmer temperatures.
5. Monitoring and managing water quality is crucial to prevent microcystin contamination.

Review Questions

• What type of microorganisms produce microcystins?
• Why can't boiling water eliminate microcystins?
• How do microcystins primarily affect human health?

Related terms

Cyanobacteria: Photosynthetic bacteria found in freshwater systems that can produce harmful toxins like microcystins.

Algal Bloom: A rapid increase in the population of algae in an aquatic system, often leading to toxin production.

Hepatotoxin: A toxic substance that specifically damages the liver; microcystins are an example.