Tag: cockroaches

Meet the Newest Cyborg, A Remote-Controlled Cockroach

By Ashley P. Taylor | September 11, 2012 12:50 pm

roachbot

What has two antennae and receives radio signals? A cockroach, of course.

Researchers from the iBionicS lab at North Carolina State University have created a remote-control system to stimulate and steer cockroaches, they reported at the 34th Annual International Conference of the IEEE Engineering in Medicine & Biology Society last month. In this system, described in their paper for the conference, they equip a Madagascar hissing cockroach with an electrical circuit board with wires connecting to the tips of the cockroach’s antennae. They can then use a a joystick to send radio signals to the antennae in order to make the roach feel as though it has run into something and needs to turn away. A zap to the right antenna and the roach turns left; a zap to the left and it turns right.

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CATEGORIZED UNDER: Technology

Look at This: Glowing South American Roaches Mimic Toxic Beetles

By Veronique Greenwood | August 23, 2012 10:25 am

roaches

Under normal light, this roach looks normal enough. But under a fluorescent light, its three spots—two large ones and one very tiny one just visible under the right spot—light up like a Christmas tree.

This remarkable species of South American cockroach, Lucihormetica luckae, owes its fluorescence to bacteria. The spots on the dark brown area of its carapace are pits inhabited by microbes that glow under fluorescent light.

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CATEGORIZED UNDER: Living World

Cockroaches Get Lonely, Kind of (But a Little Feather-Poking Can Help)

By Sarah Zhang | May 3, 2012 4:07 pm

cockroaches

When people think of cockroaches, some may think of the much-smarter-than-a-bug Gregor Samsa, but it takes a special kind of person—a social biologist, really—to think of them as “gregarious.” Yes, these unloved (by humans), trash-eating creatures have social lives too. A recent review in the journal Insectes Sociaux highlights the social behavior of two so-called gregarious cockroach species: Blattella germanica and Periplaneta americana. Although not as sophisticated as eusocial insects like ants or bees, these cockroaches can communicate, recognize kin, and even get “lonely” in isolation. Now we’re getting Kafka-esque.

To talk to and recognize one another, cockroaches use hydrocarbons, molecules that are made of only hydrogen and carbon atoms. These chemical markings help them identify group shelter spots, where they hang out together during the day between nightly foraging runs. (When they are out looking for new shelter or food, they tend to follow the crowd too.) The hydrocarbon signature is unique to each cockroach. Siblings can recognize each other and avoid incest, which is not so great for genetic diversity.

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CATEGORIZED UNDER: Living World

Cockroaches Have Super Antibiotics in Their Brains; We Must Steal Them

By Andrew Moseman | September 10, 2010 12:53 pm

CockroachCockroaches take advantage of our messy hospitality, skulking around in the cracks and holes of our houses and devouring the scraps we leave behind. Soon, though, maybe we’ll be the ones taking advantage of their fondness for filth.

The brains of these insects carry some serious antibiotics—strong enough to slaughter bacteria that have evolved resistance to the hospital antibiotics we use. The researchers presented their work at the Society for General Microbiology meeting this week in England, and say that while the finding is terrific, it’s no surprise given the roaches’ living circumstances:

“Some of these insects live in the filthiest places ever known to man,” says Naveed Khan, coauthor of the new study. “These insects crawl on dead tissue, in sewage, in drainage areas. We thought, ‘How do they cope with all the bacteria and parasites?’” [Science News]

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CATEGORIZED UNDER: Health & Medicine, Top Posts
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