The number “1 million billion” may sound made up or incalculable, but you’ll reach it trying to count all the ants on the planet. We share the Earth with an estimated 1 quadrillion ants spread out over more than 12,000 ant species. That’s 1,000,000,000,000,000 of these insects. This outnumbers all other living species on Earth, excluding bacteria. The next time you’re feeling stressed about the sight of a few dozen ants in your home, take a breath and be thankful that all the ants on the planet aren’t working together.
Enthusiastically social insects, ants typically live in structured nest communities that may be located underground, in ground-level mounds, or in trees. Carpenter ants nest in wood and can be destructive to buildings. Some species, such as army ants, defy the norm and do not have permanent homes, instead seeking out food for their enormous colonies during periods of migration.
One Amazon species (Allomerus decemarticulatus) cooperatively builds extensive traps from plant fiber. These traps have many holes and, when an insect steps on one, hundreds of ants inside use the openings to seize it with their jaws.
Another species, the yellow crazy ant (Anoplolepis gracilipes), is capable of forming so-called supercolonies that house multiple queens. On Australia’s Christmas Island, the accidental introduction of yellow crazy ants in the early 20th century has led to a destructive infestation. The ants are a significant threat to the island’s endemic population of red crabs, which are displaced by the ants from their burrows or killed as they pass through ant nest sites during the crabs’ large-scale annual migration from the forest to the coast.
Credit : National Geographic
Picture Credit : Google
