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These ants can shrink and regrow their brains New research on Indian jumping ants shows they can undergo dramatic reversible changes previously unknown in insects. ByTroy Farah Email For most ant colonies, there’s a straightforward hierarchy: a single queen lays all the eggs, while a caste system of workers manages everything else foraging for food, nursing baby ants, going to war, and so on. Only males and queens can reproduce, and the rest of the ants are sterile. If the queen dies, the colony usually does, too. Things are different for the Indian jumping ant, a species with forceps-like jaws and large black eyes that inhabits forests along India’s western coast. In these colonies, if the queens die, workers host bizarre competitions in which the winner becomes the monarch and capable of producing eggs. The triumphant female ant’s ovaries expand and her brain shrinks up to 25 percent.

Kennesaw state universityUnited statesClint penickEmilie snell roodRachelle adamsOhio state universityProceedings of the royal societyUniversity of minnesotaOhio stateகென்னேசவ் நிலை பல்கலைக்கழகம்ஒன்றுபட்டது மாநிலங்களில்கிளின்ட் ஆண்குறிஎமிலீ ஸ்நெல் ரூட்ஓஹியோ நிலை பல்கலைக்கழகம்பல்கலைக்கழகம் ஆஃப் மினசோட்டாஓஹியோ நிலை