Karlodinium veneficum
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| Karlodinium veneficum | |
|---|---|
 | |
| Scanning electron microscope image of Karlodinium veneficum (right) feeding on Rhodomonas | |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Sar |
| Clade: | Alveolata |
| Phylum: | Dinoflagellata |
| Class: | Dinophyceae |
| Order: | Gymnodiniales |
| Family: | Kareniaceae |
| Genus: | Karlodinium |
| Species: | K. veneficum |
| Binomial name | |
| Karlodinium veneficum (D.Ballantine) J.Larsen 2000 | |
Karlodinium veneficum is a species of dinoflagellates belonging to the family Kareniaceae.[1] This species is predominantly inhabiting aquatic environments, particularly in temperate coastal regions.
Karlodinium veneficum genome sizes have been reported as ~20 pg/cell[2] and 4 pg/cell.[3]
This phytoplankton has the capacity to produce harmful toxins, specifically karlotoxins, which have been associated with detrimental phenomena such as harmful algae blooms.[4] These blooms have been documented globally, spanning regions from South Africa[5] and Europe[6] to Australia, North America, and China. The repercussions of K. veneficum blooms include not only ecological concerns, also substantial economic and environmental impacts.
The species-specific toxins produced by K. veneficum, known as karlotoxins, belong to the amphidinol-like compound class, exhibiting hemolytic, ichthyotoxic, and cytotoxic properties. The toxins generated by this dinoflagellate have been implicated in massive fish kills during bloom events.[7]
K. veneficum is not confined to solitary blooms but frequently coexists with other phytoplankton species, such as Prorocentrum donghaiense and Karenia mikimotoi.[8] K. veneficum often proliferates into dense blooms following the decline of P. donghaiense.[9]