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Why Cockroaches Are So Hard To Kill

Why Cockroaches Are So Hard To Kill


– [Narrator] You might not
want to think about this, but over 3500 species of cockroaches live on this planet. The good news? Only about 30 of those species have adapted to live around humans. The bad news? 30 species of cockroaches
can live around us! Roaches are one of the most
common pests in the US. So it’s no surprise that humans are always trying to kill them. But no matter how many
times we stomp them, squash them, and bomb
them with toxic chemicals, these pesky pests always seem
to pop up time and time again. So what’s going on? Let’s take a closer look at the roach you probably know better than you’d like. Periplaneta Americana. Aka, the American Cockroach. But this name is misleading. This guy is actually
from Africa, not America. It made its way to the US by infesting boats in the 16th century, and it’s been spreading to
almost every corner in the world ever since. It turns out, it’s one of the largest
species of cockroach around. But that’s not the only
big thing about it. New research has revealed
that it has a massive genome. One of the largest of any studied insect. And may of these genes are
exactly what make this roach a master survivor. Let’s start with the genes associated with something called Chemoreception. That’s how roaches smell
and taste their environment. Turns out they’re actually way better at sniffing out and eating
food than most other insects. The American roach has 154
olfactory receptors for smell, and 544 gustatory receptors for taste. More than any other insect on the planet. As a result, these cockroaches
are not picky eaters. Sure, they like cheese, meat
and sugar like the rest of us, but they’ll also go for
things like cardboard, book bindings, human
toenails, rotting meat, blood, excrement, and even each other. That’s right, these
roaches have been known to eat other dead or crippled cockroaches, all in the name of survival. It sounds gross, but this diverse diet makes it easy to find a
meal just about anywhere, even if it’s poisonous to most animals. This roach has a bunch of
genes called Cytochrome P450s, which help it withstand
poisonous chemicals, like peppermint. These genes code for
detoxification enzymes, which keep the insect safe. On top of that, this roach has
a super-strong immune system that seeks out and kills
harmful microbes and fungi, making the most unsanitary environment look like a five-start hotel
to the American cockroach. Not gross enough yet? Well consider this. Cockroaches can live nearly
a week without their heads. Yeah, that’s not a myth. They don’t have a highly
pressurized network of blood vessels like humans,
so they don’t bleed out. Instead, their necks actually
seal off the opening. They can’t regenerate a whole head, but roaches to have an impressive set of regenerative superpowers. For up to the first two years of its life, the American roach goes through a series of regenerative molts as
it matures into an adult. During a single molt stage,
it can replace lost limbs. And over a series of molts,
it can regrow antennae and even its eyes. Roaches may be hard to kill, but there’s an easy way to keep
them clear of your kitchen. Cleanliness. A roach just won’t survive
in unsanitary conditions, it actually enjoys it. Its heightened senses mean it actually relishes rotting food. So, store food in airtight containers. Cover trash bins, and
keep your basement dry. It might also be smart to
plug holes in your walls, unused electrical outlets,
and especially drains, since get this, roaches can use your plumbing
to climb up from sewers into your bathroom sink. It might not eliminate the risk entirely, but it can’t hurt, and it will certainly
make you feel better. However, we can’t promise
it will keep them out of your nightmares. (dramatic music)

100 thoughts on “Why Cockroaches Are So Hard To Kill”

  1. Once I was watching Avengers: Age of Ultron at 3 AM and a cockroach was on my leg and I jumped off the bed, I covered him so he doesn't run and then I woke my mom to kill it. After, I closed Avengers and just slept in the sleeping bag position so none cockroach kills me.. Weird.

  2. me seeing a cockroach pfft I could kill u on a second turns away * look backs *cokroach starts flying toward me Screams so load everyone comes *

  3. God: I’m gonna send down beautiful creatures to earth.

    God: inserts 3,000 cockroaches

    Me: Realised most were flying roaches

    Me: oh. Ok.

    Me: grabs Le gun*

    dies

  4. We should genetically mutate them so they would have fewer traits that help them survive. Just breed like 10 000 of them in a controlled environment where we could be for sure they are worse than the ones that live today and then dump them into the NY sewers or something then they would breed like hell as they do and now other roaches would have these traits, so in the long run they would reproduce less.
    Or something like that. I bet scientists could figure it out so it would work.

  5. 2:27 Actually cytochrome P450 is a family of enzymes and many species have them, including humans. They are not used only against poison but also to create new molecules inside of the organism

  6. My mama invited one of her friends to live with us for about 4months before she moves ,that girl didn't clean her stuff and she bought roaches,bed bugs, and even frkin rats,and we lived like that for a couple months and we moved

  7. Wait so your saying cockroaches can survive atomic bombs??? Now people are gonna use cockroaches for war lmao! 🤣

  8. My teacher when she sees A lizard of cockroaches near her next
    AHHHHHH SCREAMS AND RUNS ARCOSS TO THE OTHER SIDE OF THE CLASS ROOM
    SAME WITH US ALL TUE CLASS JUST SCREAMS
    THERES A BIG WON WE KILLED WON THE OTHER IS STILL IN A GAP IN THE WALL

  9. 00:25 get a cat. They love hunting bugs.

    Mines always chasing moths, flys, geckos or roaches. He’s got a very strong natural hunting drive.

    Problem is, sometimes he brings them to me as gifts. And sometimes he doesn’t kill them. Just drops it in front of me and looks at me like ‘here, got ya something!’

    I wish I could let him out and enjoy the outside world, but he’s such a good hunter that I’m sure he’d murder every bird in the city within a week.

  10. Cock roaches are attracted to wetness, here in texas as humid as it is, as well as everytime it rains, it washes all the cockroaches inside. Dont move to texas.

  11. I remember that time, when I was walking in the street, and I saw that beautiful girl, I smiled at her and start to talk, but she looked at me seriously with and pointed at my back and said: firstly you must look what's on your shoulder.
    There is a big cockroach on me, and I start screaming and jumping like crazy, it was embarrassing at the moment, now I'm laughing a lot at that incident :)))

  12. How to defeat cockroaches:
    Step 1: Buy a Cat.
    Step 2: They Know How To Hunt.
    Step 3: All Cockroaches Are Dead.
    Step 4: Your Welcome.

  13. Just yesterday, there was a big cockroach IN my shoe. When i put my foot in it i felt something sharp i pull out my feet back . I saw an ant crawling out then i was scared i give it to my sister and she threw it to the ground then i saw it a DEAD,BIG COCKROACH. I SCREAMED THEN I WASHED IT

    THE END 🙂

  14. 🤢🤢🤢🤢🤢😫😫😫😫😫😫😫🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤮🤬🤬🤬🤬🤬omg soooo grooooooooossssssss

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