In the desert, these ants transform their own sisters into living nectar storage tanks
In short: Deep within arid desert nests, honeypot ants perform a remarkable feat of biological engineering. They select their largest sisters and feed them until their abdomens swell into golden, liquid-filled spheres. These living storage units, known as repletes, serve as the colony’s vital food reserve when resources become scarce in the wild.
The process of creating a replete begins with the selection of the largest newborn ants within the colony. Workers of the species Myrmecocystus mexicanus, which inhabit regions across Mexico and the American Southwest, forage at night to gather nectar from plants and sweet secretions from insects like aphids. They also collect dead insects, including other ants, to extract essential fats and proteins that eventually contribute to the nutritional content stored within the repletes.
To fill these living jugs, worker ants transport liquids back to the nest in their own abdomens. They then transfer the food mouth-to-mouth to the chosen sisters. The liquid enters a specialized pouch called the crop, which expands significantly to accommodate the volume. To ensure the food remains in storage rather than being consumed, the ant’s anatomy features four valves that effectively block the liquid from entering the stomach, where it would otherwise be digested.
These ants are found in arid environments across North America, Australia, and Africa. While they serve as a critical survival mechanism for the colony, they are also consumed by humans in parts of Mexico and Australia. Entomologist John Conway, who has studied Myrmecocystus mexicanus in Colorado, notes that the ants possess a flavor reminiscent of molasses. When threatened, the ants utilize a defense mechanism by squirting formic acid, which can produce a mild burning sensation for anyone attempting to eat them.
Repletes are frequently observed hanging from the ceilings of their underground nests. Conway suggests that this positioning may facilitate air circulation, potentially helping the ants avoid fungal infections. Despite their role as stationary storage vessels, repletes are not entirely immobile; they are capable of moving around and are occasionally found crawling on the floor of the nest, demonstrating that their function as a pantry is a dynamic, rather than purely static, aspect of colony life.
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- Summary by Intellect · source: Honeypot Ants Turn Their Biggest Sisters into Jugs of Nectar | Deep Look
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