Single Chemical From Naked Mole-Rat Queen Keeps Whole Colony Infertile
Researchers have identified a specific chemical, isopropyl myristate, that naked mole-rat queens use to suppress the fertility of other females in their colony. This discovery highlights a rare instance of chemical-based reproductive control in mammals.
Why it matters
It challenges previous biological assumptions about mammalian social structures and provides new insights into pheromonal communication.
Naked mole-rats are one of nature’s strangest animals: hairless, wrinkled rodents that live like ants in underground tunnels, ruled by a single breeding queen. For decades, biologists were stumped by one question about them. How does that queen stop every other female in her colony from ever having babies? Researchers now have a strong lead, and much of it comes down to a single chemical her body makes.
A study published in the journal Nature points to a waxy, nearly odorless compound called isopropyl myristate, found at high levels in queen naked mole-rats and almost nowhere else in the colony. Picked up through the nose, it appears to flip a hormonal switch in other females that keeps them from reproducing. When the queen is around and the chemical is present, the colony stays calm and infertile. When it disappears, order breaks down fast.
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