11/17/2025
When we talk about winter bees, the word vitellogenin always pops up.
And honestlyโฆ what the heck is that anyway?! ๐โ๏ธ
It sounds like something straight out of a science lab, but itโs actually one of the most fascinating parts of honey bee biology โ and itโs the secret to how colonies survive winter.
Soโฆ what IS vitellogenin?
Vitellogenin is a powerhouse protein stored inside the bodies of winter bees. Unlike summer bees (who live only 4โ6 weeks), winter bees can survive 4โ6 months โ and vitellogenin is the main reason why.
This one protein acts like:
๐Energy storage
๐A supercharged immune booster
๐Anti-aging protection
๐A built-in nutrition reserve for raising early spring brood
It basically turns winter bees into long-lasting, cold-resistant, brood-feeding superheroes.
Why winter bees are totally different
As fall arrives and pollen drops, colonies begin raising a special generation of โfat bees.โ These bees arenโt actually fat โ theyโre packed with vitellogenin.
Because of this, they can:
๐ Live months instead of weeks
๐ Cluster and generate heat without burning out
๐ Fight off disease more effectively
๐ Feed the first spring babies long before fresh pollen arrives
Without vitellogenin, the colony simply couldnโt make it through winter.
Why this topic fascinates me
Honey bees never stop amazing me. One single protein controls longevity, immunity, stress tolerance, and early spring brood care. Itโs like nature invented the perfect survival tool.
Bee Haven 2025
And hereโs the important takeaway:
What we feed our bees in late summer and fall directly affects their vitellogenin levels โ and ultimately their winter survival.
The more we learn, the better we can care for them. ๐๐
I would love a dart of Vitellogenin, you?