Coelomomyces

Definition

A genus of obligate, entomopathogenic fungi in the family Coelomomycetaceae (order Blastocladiales, phylum Blastocladiomycota) that infects and kills aquatic mosquito larvae. The fungus produces thick-walled, resistant sporangia in the hemocoel of its host, typically requiring an intermediate copepod host to complete its complex life cycle. Species such as C. stegomyiae and C. iliensis have been investigated as biological control agents against vector mosquitoes including Aedes and Anopheles.

Etymology

From Greek koilos (hollow, cavity) + mykes (fungus), referring to the coelomic (hemocoel) habitat within the insect host.

Example

Coelomomyces stegomyiae infects larvae of Aedes aegypti, the yellow fever mosquito, causing epizootics in container habitats; field applications require introduction of both the fungus and its copepod intermediate host to establish transmission cycles.

Related Terms

• entomopathogenic fungus
• Biological control
• mosquito
• Blastocladiomycota
• hemocoel
• obligate parasite
• intermediate host

Usage Notes

The genus is strictly entomopathogenic and aquatic, with no known terrestrial or non-arthropod hosts. Taxonomic placement in Blastocladiomycota (formerly considered Chytridiomycota) reflects molecular phylogenetic revisions. Species identification requires examination of sporangial morphology and host range; some species show narrow host specificity useful for targeted vector control.