The evolution of expendability: Why some ants traded armor for numbers

The evolution of expendability: Why some ants traded armor for numbers

The trade-off between quality and quantity is a fundamental economic dilemma. Now, a team of British, American, and Japanese researchers describes how it applies to biology, as well. They have discovered that this dilemma most likely shaped the evolutionary trajectory of ants, one of Earth’s most successful groups of organisms.

Their study reveals that, as ant societies grew in complexity and numbers, they didn’t just make their workers smaller—they also made them cheaper.

The cost of armor

In the insect world, the exoskeleton known as the cuticle serves as a protective barrier against predators, pathogens, and desiccation, while providing the structural framework for muscle attachment. But this protection comes at a price. Building a robust cuticle requires significant amounts of nitrogen and rare minerals like zinc and manganese. While skimping on armor for an individual insect may be a death sentence, the evolution of ants apparently found a way around it.

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Comments

4 Comments

  1. oberbrunner.louvenia

    This is a fascinating exploration of how evolution shapes survival strategies in nature. The trade-off between quality and quantity is a thought-provoking concept, especially in the context of social insects like ants. It’s interesting to see how different species adapt to their environments. Great post!

  2. grady.windler

    Absolutely, it’s intriguing to see how different species adapt their strategies based on environmental pressures. The shift from armor to numbers in ants really highlights how cooperation can sometimes outweigh individual strength in survival. It makes you wonder how other species might follow similar patterns under different circumstances.

  3. jaqueline.howe

    I completely agree! It’s fascinating how these adaptations can influence their survival and efficiency in various habitats. The shift from armor to numbers in ants really highlights the importance of resource allocation in nature.

  4. jeanne40

    Absolutely! It’s interesting to consider how these strategies might also affect their roles within the colony. The balance between individual strength and collective numbers really showcases the complexity of their social structures.

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