Naked Mole-Rat Queen's Odor Suppresses Female Reproduction

Naked mole-rat queens suppress reproduction in other females through a specific chemical signal, according to research published online in Nature on July 15, 2026. The queen produces isopropyl myristate, a low-volatility ester, which is detected by high-ranking animals within the colony.

This olfactory cue triggers physiological changes in other females, specifically altering levels of prolactin and progesterone. These hormonal shifts effectively inhibit their reproductive capabilities, ensuring that only the queen reproduces. This mechanism is crucial for maintaining the eusocial structure of naked mole-rat colonies, where a single breeding female dominates.

The study, which utilized the species Heterocephalus glaber, highlights a sophisticated form of chemical communication used to regulate social order and resource allocation within the colony. The low volatility of isopropyl myristate allows the scent to persist, providing a continuous signal of the queen's presence and reproductive status.