What type of disease is chalkbrood?

Chalkbrood is classified as a fungal brood disease, primarily caused by the fungus Ascosphaera apis. This disease affects honeybee larvae, infecting them during the early stages of development. The fungus thrives in the brood cells of the hive and, once the larvae are infected, they typically die and dry out, turning a chalky white color, which is a characteristic symptom of this condition. This type of disease is particularly prevalent in cool and damp conditions, which can promote fungal growth.

Understanding that chalkbrood is a fungal issue helps beekeepers take appropriate measures to manage their colonies, such as maintaining better hive conditions, improving ventilation, and monitoring for signs of infection to prevent outbreaks. Recognizing it as a fungal disease distinguishes it from bacterial, viral, or parasitic issues, each of which would require different management strategies.