Bullhorn acacia seems to have no enemies. Her massive and long spikes scare everyone away? Well, not exactly. That’s why acacia toook care about a strong ally… an ant size of a few millimeters (Pseudomyrmex). Ants literally live in acacia, exactly in her spikes (look in the picture). They also drink from “nectaries” producing sweet secretion which is the main fuel of all ants. So there is still a problem of proteins. Where do they get it? Normally, ants have to forage for insects. Not anymore! At the end of the leaves, there are “Beltian bodies” (visible in the picture) that are rich in protein.
 
No wonder the ants take a great care about “their plant” defend it fiercely and even cut off all the other plants near it so they don’t steal the mineral salt!
 
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