How Ants Grow Food, Domesticate Insects & Create Their ‘Castes’

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Ants carrying leaves to be used as fertlisier. Image: Public domain
Ants have been growing their own food, making their own fertiliser and pesticides for over fifty million years.

Humans are not the only animals to be involved in agriculture. Three other animal groups–Bark Beetles, Termites and 240 species of Ants–have been cultivating their food for millions of years. Ants, for instance, have been avid agriculturists for nearly fifty million years; leaf cutter ants have been farming for almost eight to ten million years. But unlike human brinksmanship, their agriculture has been cooperative, adaptable, and sustainable.

Ants have built massive ‘colonies’ deep below the grounds, containing thousands of chambers–neatly-arranged rooms, larval quarters, nurseries and gardens–in which they cultivate fungi. They whiz around, collecting leaves, (flowers and other plant parts as well for some species) and grinding them into a fine paste to use it as a fertiliser to grow fungus, their food.

They keep the rooms spotlessly clean to make sure that fungi remain disease free–and grow antibiotic bacterial cultures to protect their crops from infectious pathogens and parasitic fungi. They also cultivate Nitrogenous bacteria to nourish the fungi and boost fertility.

The ants accomplish these tasks by allocating specific tasks to specific sections of the ant communities. As a result, ant colonies are segregated into co-operative guilds or “castes,” based on their size. For instance, in some tropical leafcutter ant colonies, different sections of ants play different roles.



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