Buzz
If you’re a fan of trees and tiny creatures, you might think twice before wishing cockroaches out of existence.
Photo Credit: Jan Stromme/Getty ImagesMain Insights
- Cockroaches serve important functions within ecosystems.
- Removing them could disrupt natural food chains and the cycling of nutrients.
- On the other hand, eliminating them could reduce some health and hygiene issues.
This thought-provoking question feels like it came straight from a utopian brochure for a roach-free paradise. After all, no one enjoys these disgusting, house-dwelling pests, right? They carry bacteria like Salmonella and Shigella, spread droppings everywhere, and can worsen allergies and asthma [source: Rust and Reierson]. These are all solid reasons to get rid of them.
But hold on a second. Out of an estimated 5,000 to 10,000 cockroach species, only a handful are typically found invading homes. These troublesome pests include Blattella germanica, the German cockroach; Periplaneta americana, the American cockroach or palmetto bug; Supella longipalpa, the brown-banded cockroach; and Blatta orientalis, the Oriental cockroach [source: Rust and Reierson].
Most cockroaches thrive in warm, tropical climates, content to go about their business far from humans. Some of them are even quite stunning — yes, really — and some can even glow in the dark [source: Mott]. But if you're still interested in exploring what a world without them might look like, here's the short version: it wouldn't be good.
In tropical forests, cockroaches feast on decaying wood and leaves. The droppings they leave behind are packed with organic material and nutrients like nitrogen, which help enrich the soil. Nitrogen is crucial for tree growth, which sustains forests — and us, since we rely on wood for shelter. Speaking of shelter, many animals we enjoy, such as small mammals, birds, and reptiles, eat cockroaches. And because other creatures feed on these small animals, removing just this one link in the food chain could cause widespread disruptions in the ecosystem [source: Wolchover].
So, the next time you feel the urge to squish a cockroach scurrying toward your refrigerator, keep in mind that it might be helping restore a nearby forest when it's not causing trouble in your home.
But don’t worry: They aren’t going anywhere anytime soon. Cockroaches have been around since before the dinosaurs. In fact, fossil evidence shows they've existed for over 300 million years — talk about resilience. These creatures are among the toughest on Earth, capable of surviving massive doses of radiation (far more than humans can handle) and going without food for up to a month [source: Welcome Wildlife]. So if you happen to squish one darting across the kitchen floor, don’t panic — you haven’t pushed these resilient creatures toward extinction just yet.
