Why is the foraging behavior of a Bombus vestalis queen different from that of a standard social bumblebee?

Answer

She prioritizes finding a host nest over long-term provisioning

A standard social bumblebee queen must engage in an extensive foraging process to secure enough nectar and protein-rich pollen to sustain herself and her first brood of workers over a period of weeks. In contrast, the Vestal Cuckoo queen follows a strategy centered on a single, high-energy infiltration event. Her foraging activity is intentionally brief and focused only on gathering enough immediate energy to fuel the search for and seizure of an existing nest that has already been stocked by other bees, rather than building those stores herself.

Why is the foraging behavior of a Bombus vestalis queen different from that of a standard social bumblebee?
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