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The Mutant All-Female Crayfish, Which Reproduces by Cloning Itself, Is Filling Europe at Alarming Speed (atlasobscura.com)

The marbled crayfish looks much like any other freshwater crustacean. It has two claws, ten legs, and an attractive blue-brown marbled shell. Yet this six-inch creature, found in streams and lakes around the world, is far more sinister than you might expect. From a report: Its new scientific name gives a few clues: Procambarus virginalis. Every marbled crayfish, known as a marmorkreb in German, is female -- and they reproduce by cloning themselves. Frank Lyko, a biologist at the German Cancer Research Center, first heard about the marbled crayfish from a hobbyist aquarium owner, who picked up some "Texas crayfish" at a pet shop in 1995. They were strikingly large, and they laid enormous batches of eggs -- hundreds, in a single go. Soon, the New York Times reports, the hobbyist was beset with so many crayfish he was giving them away to his friends. And soon after that, marmorkrebs were showing up in pet stores upon Europe.

There was something very strange about these crayfish. They were all female, and they all laid hundreds of eggs without mating. These eggs, in turn, hatched into hundreds more females -- with each one growing up fully able to reproduce by herself. In 2003, scientists sequenced their DNA and confirmed what many owners already believed to be the case: Each baby crayfish was a clone of its mother, and they were filling Europe's fishtanks at alarming speed. Just 25 years ago, the marbled crayfish did not exist at all. Now, they can be found in the wild by the millions in Germany, the Czech Republic, Hungary, Croatia, the Ukraine, Japan, and Madagascar.

15 of 279 comments (clear)

  1. Invasive species by Nidi62 · · Score: 5, Funny

    Just head on down to Louisiana and pick up a batch of Cajuns from the bayou and they will have those crayfish under control in no time. Don't bother bringing in snakes or gators to control the Cajuns though, they'll eat those too.

    --
    The only thing necessary for evil to triumph is for it to be pitted against a slightly greater evil
    1. Re:Invasive species by magarity · · Score: 5, Funny

      Alternatively, tell the Chinese these crayfish cure erectile dysfunction, diabetes, cancer, and aging. They'll be wiped out in less time than they took to spread.

    2. Re:Invasive species by hey! · · Score: 5, Funny

      Actually the Chinese eat crayfish for food. Procambarus clarkii, the Louisiana crawfish, is an invasive species in Chinese rice paddies, but many Chinese farmers welcome them as a secondary crop. They call it xiao long xia -- the little dragon shrimp. While it threatens native Chinese fisheries, it has considerable economic value.

      It so happens I'm half Chinese, half Cajun. There probably isn't an animal that creeps through the forest of swims in the water that's safe for me.

      --
      Post may contain irony: discontinue use if experiencing mood swings, nausea or elevated blood pressure.
  2. Sinister? Hah!! by Nutria · · Score: 4, Funny

    It's the first sign of the matriarchal utopia...

    --
    "I don't know, therefore Aliens" Wafflebox1
  3. Re:Time for a boil by Anonymous Coward · · Score: 5, Funny

    *Good* gumbo is a colloidal suspension...

  4. Imagine if humans became like that by Spy+Handler · · Score: 4, Funny

    a feminist's wet dream, a world without male privilege where everyone is equal (because everyone is female and identical clones)

    1. Re:Imagine if humans became like that by cascadingstylesheet · · Score: 4, Funny

      a feminist's wet dream, a world without male privilege where everyone is equal (because everyone is female and identical clones)

      But who would they blame for everything???

    2. Re:Imagine if humans became like that by Spy+Handler · · Score: 5, Funny

      But who would they blame for everything???

      Russians.

  5. Launch Secret Weapon by Zorro · · Score: 4, Funny

    Cajun Navy deployed. Have Hot Sauce will Travel.

  6. Creoles find a way by fyngyrz · · Score: 5, Funny

    Which makes these guys (err... gals) lunch

    --
    I've fallen off your lawn, and I can't get up.
    1. Re:Creoles find a way by sycodon · · Score: 3, Funny

      Easy Solution

      --
      When Fascism comes to America, it will call itself Anti-Fascism, and tell you to give up your guns.
    2. Re:Creoles find a way by cayenne8 · · Score: 5, Funny
      They've left out the MOST IMPORTANT piece of information on these crawfish....

      How do they TASTE?!?!?

      I'm happy to say that crawfish season in the New Orleans area is just around the corner....YUM!!

      --
      Light travels faster than sound. This is why some people appear bright until you hear them speak.........
  7. Mystique? by Pfhorrest · · Score: 3, Funny

    Europe is being overrun by all-female blue mutants?

    Do they look like Jennifer Lawrence?

    --
    -Forrest Cameranesi, Geek of all Trades
    "I am Sam. Sam I am. I do not like trolls, flames, or spam."
  8. Re:Wait so Star Trek was wrong? by freeze128 · · Score: 4, Funny

    It's important to note that you shouldn't get your physics/medical/biological/legal advice from Star Trek.

  9. Re: life by Anonymous Coward · · Score: 4, Funny

    If you ever offer to make me a milkshake in the bug bioweapon blender, remind me to say no.