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In most of the animal world, there is a sad trade-off: the more children you have, the shorter your lifespan
A new study by University of Florida biologist Hua Yan and his colleagues at NYU found that queen ants exercise a dual system of control over insulin, a hormone that controls metabolism that explains the difference between reproduction and longevity.
"Hopefully this discovery will give us a better understanding of the aging process in many animals," said Hua Yan, an assistant professor of biology at the University of Florida who also studies how ants use pheromones to organize their societies
Whether mammals, including humans, benefit from partial blockade of the insulin pathway remains an open question
The research team published the results on September 1
They found that the pseudoqueens produced more insulin, as they expected
"It's simple, the pseudo-queens are reproducing, so they need insulin
The team found that this extra layer of control exists in the form of an insulin blocker, called Imp-L2, which is produced by the newly active pseudo-queen's ovary
In a sense, ants laying eggs means longevity
Insulin signaling in the long-lived reproductive caste of ants
