Journeyman Beekeeping Practice Exam

Chalkbrood is a fungal disease caused by Ascosphaera apis that primarily affects honey bee larvae, particularly the worker larvae. The disease manifests in larvae that have been infected with the fungus, leading to a distinctive chalky appearance as the larvae decay. Worker larvae are particularly susceptible since they are the youngest and most developing stage of the bee life cycle when they encounter environmental stresses, poor nutrition, or low hive hygiene, which can increase the likelihood of chalkbrood infections.

While drone and queen larvae can also be affected by various diseases, chalkbrood has a pronounced impact on worker larvae because they make up the majority of the brood in a colony. Worker larvae are typically housed in cells that are more likely to be exposed to contaminated conditions within the hive. In contrast, king or queen larvae are generally raised under different conditions and in a more controlled environment, thereby minimizing their exposure to such infections.

In summary, the focus on worker larvae as the primary type affected by chalkbrood reflects their vulnerability due to their larger numbers and the specific conditions they are raised in within the hive.