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How do worker honeybees change jobs as they grow older?
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Hymenoptera
An endangered rusty patched bumblebee (Bombus affinis) browsing on a wild bergamot flower.
In honeybee colonies, the division of labor is organized by age, with worker bees transitioning through a sequence of tasks that corresponds to their physiological development.1
- Days 1β3: Upon emergence, workers perform hive maintenance, including carrying out waste, cleaning cells, and lining them with disinfectant secretions.1
- Days 4β15: The bee advances to brood nursing, providing older larvae with pollen and honey, and eventually feeding younger larvae with specialized food from their pharyngeal glands.1
- Day 16: Workers begin secreting wax to build the honeycomb.1
- Post-Day 16: After making their first orientation flights, bees transition to external duties.
- Day 20 onwards: The bee serves as an entrance guard before becoming a forager, a role she maintains until death.1
This progression is driven by internal changes: pharyngeal glands, which produce larval food, are most active in young bees, while wax glands peak around the 10th day. By the time a bee begins foraging outside the hive, these glands have typically degenerated.1