Scientists have developed a breakthrough food supplement that could help save honeybees from devastating declines. By engineering yeast to produce six essential sterols found in pollen, researchers provided bees with a nutritionally complete diet that boosted reproduction up to 15-fold. Unlike commercial substitutes that lack key nutrients, this supplement mimics natural pollen’s sterol profile, giving bees the equivalent of a balanced diet.
TL;DR: They found six sterols found in pollen could be produced from engineered yeast and increased brood production dramatically. The article talks about them as essential nutrients but is it possible they are signaling molecules affecting bee behavior?