Overview
- Researchers published a multidisciplinary study in Nature showing that the peanut-shaped queen cells have bespoke wax that helps determine queen fate rather than diet alone.
- Analyses including electron microscopy and chemical assays found queen-cell wax is richer in unsaturated fatty acids (oleic, linoleic, α-linolenic), lower in n-alkanes and wax esters, softer and less dense, and has a higher peak melting point than worker-cell wax.
- The team identified a dedicated group of younger ‘queen-cell builder’ workers that heat their bodies to about 40 °C and chemically modify wax while constructing queen nurseries.
- Grafting experiments reported Wednesday showed queen-destined larvae capped with worker-cell wax had roughly 62.5% mortality and produced smaller pupae, and the result was replicated in Apis cerana, indicating the effect spans species.
- Authors and outside experts say the finding reshapes understanding of division of labor in hives, could affect colony health and pollination services, and prompts follow-up work to trace exactly when and how wax chemistry and physical properties alter larval development.