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How Vampire Bats Evolved To Live On Blood Alone

New research has discovered some of the genetic changes that allowed vampire bats to live on a diet of pure blood. One of the bats' most important evolutionary traits is the ability to manipulate an anticoagulant protein in their blood and saliva. In humans similar proteins protect against heart attack by breaking up blood clots and clearing vessels.

34 of 82 comments (clear)

  1. Simple Really by eldavojohn · · Score: 5, Funny

    They just needed to pass the BAR exam.

    --
    My work here is dung.
    1. Re:Simple Really by Anonymous Coward · · Score: 4, Funny

      Oh c'mon, knock it off! As if bats don't have a bad enough image as it is :(

    2. Re:Simple Really by R2.0 · · Score: 5, Funny

      HEY - my wife's a lawyer! How dare you compare her to a bloodsucking...

      Nevermind.

      --
      "As God is my witness, I thought turkeys could fly." A. Carlson
    3. Re:Simple Really by bluefoxlucid · · Score: 4, Funny

      If you're lucky, your wife is good at sucking...

    4. Re:Simple Really by Anonymous Coward · · Score: 3, Funny

      ... if it weren't for the sharp teeth, you would be right

  2. Let's do some REAL science. by snowraver1 · · Score: 5, Funny

    Who care? What we all really want to know is how Batman evolved from human to hero. Are the tights the key?

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    1. Re:Let's do some REAL science. by Drooling+Iguana · · Score: 5, Funny

      That, and a steady supply of underage circus performers.

      --
      ... I'm addicted to placebos
    2. Re:Let's do some REAL science. by camperdave · · Score: 4, Informative
      1. Start with rich parents and a butler trained in combat medicine.
      2. Grow up on a diet of classic mystery novels, and masked vigilantes like Zorro
      3. Have a terrifying and traumatic event happen, like falling into a cave full of bats
      4. Get taken to a stage production of Zorro
      5. Have another traumatic event happen, like having both your parents shot in front of you
      6. Follow that up with years of schooling in chemistry, psychology, criminalistics, combat training, gymnastics training, demolitions, various martial arts, etc
      7. Buy/make all sorts of fancy weapons and climbing gear
      8. Put together a costume that will inspire fear and protect your identity
      9. Get a searchlight installed on the police station rooftop

      Really, this has been extensivly documented. Might I suggest starting with the graphic novel Batman: Year One

      --
      When our name is on the back of your car, we're behind you all the way!
    3. Re:Let's do some REAL science. by Chris+Burke · · Score: 4, Funny

      God damnit, so close and I'm stuck with this stupid butler trained in holistic medicine!

      --

      The enemies of Democracy are
    4. Re:Let's do some REAL science. by Facegarden · · Score: 2, Interesting

      You forgot:

      Be a Billionare.

      But its okay, thats the easy part...
      -Taylor

      --
      Worldwide Military budgets: $2100 billion. Worldwide Space Exploration budgets: $38 billion. Really, world? Really?
  3. Simple. by grub · · Score: 5, Funny


    "They live on blood because that's how God designed them!"
    Sarah Palin

    --
    Trolling is a art,
    1. Re:Simple. by R2.0 · · Score: 5, Funny

      I swear, half of Slashdot is secretly hoping McCain wins, because if he loses, they won't have anything to post.

      --
      "As God is my witness, I thought turkeys could fly." A. Carlson
    2. Re:Simple. by Chris+Burke · · Score: 2, Funny

      I swear, half of Slashdot is secretly hoping McCain wins, because if he loses, they won't have anything to post.

      I'm not worried, since Palin has promised to continue providing us with material in either case.

      --

      The enemies of Democracy are
    3. Re:Simple. by Anonymous Coward · · Score: 2, Insightful

      He is at the edge of death. Let McCain wins the election and get Palin as president in a year.

      OTOH, Obama would probably follow the same path than Lincoln and Kennedy.

  4. Off Topic by Number6.2 · · Score: 2, Funny

    Fly, my Children! FLY! Bwaha ha ah ah ha ha ha ah ah ha!

    --
    "If god did not exist, it would be necessary to invent him" --Voltaire
  5. Re:What it should be. by moderatorrater · · Score: 2, Insightful

    Or just make all the women look like Kate Beckinsale. Being bitten on the neck is a small price to pay for my wife having that body.

  6. Re:What it should be. by MBGMorden · · Score: 4, Funny

    How about they do something useful and give us immortality and the strength of 20 dudes and all the other cool abilities? Then I'll be impressed, oh yeah and none of the weaknesses.

    Hell I honestly think I could live with the weaknesses if it meant immortality.

    I mean seriously what do vampires have against them? An inability to interact with religious objects, an aversion to sunlight, no reflection, and they can't eat garlic?

    I'd bet that 1 and 2 aren't an issue for most Slashdotters anyways, and most probably don't care about their own reflection either (heck usually when I see mine it's a glare on my screen so if I didn't show up then all the better). The garlic thing might be an issue, but I'm sure me and Papa John's could work something out.

    --
    "People who think they know everything are very annoying to those of us who do."-Mark Twain
  7. Re:What it should be. by nomadic · · Score: 2, Funny

    Did you show your wife this comment?

  8. Re:What it should be. by reverseengineer · · Score: 5, Interesting

    The NY Times had an interesting story last week about creatures that dine on blood.

    Apparently, most obligate hematophages tend to be very small- insects and such, because blood is not an ideal source of nutrition. In particular, blood has almost no dietary fat, so a large hematophage like a vampire bat, "must consume the equivalent of half their one-ounce body weight in blood every night or risk starving to death."

    Also, apparently blood is about 95% water, and so to keep from gaining too much water weight, vampire bats "urinate freely as they feed." That's a detail that seems to be missing from most vampire movies.

    --
    "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
  9. Re:What it should be. by Billhead · · Score: 2, Funny

    As if you go out in the sun much anyways.

  10. Re:What it should be. by R2.0 · · Score: 4, Funny

    "Or just make all the women look like Kate Beckinsale. Being bitten on the neck is a small price to pay for my wife having that body."

    Yeah, but you also get made into her slave and enter into a life of servitude...oh, wait...

    --
    "As God is my witness, I thought turkeys could fly." A. Carlson
  11. Re:What it should be. by R2.0 · · Score: 5, Funny

    "That's a detail that seems to be missing from most vampire movies."

    I'm sure Ann Rice covered watersports somewhere in her books.

    --
    "As God is my witness, I thought turkeys could fly." A. Carlson
  12. Dude, you forgot steps... by thenewguy001 · · Score: 2, Insightful

    10. ???
    11. Profit!!!

  13. how do they get away with it? by Khashishi · · Score: 4, Funny

    Mosquitos have stealth going for them, but I really don't understand how a bat is gonna feed on a mammal without getting beaten off. I mean, you can't really not notice a one-ounce hairy beast sucking on your neck and pissing on you at the same time. If a bat tried to feed on me, I'd pound it to a pulp.

    1. Re:how do they get away with it? by onkelonkel · · Score: 2, Funny

      Some animals sleep.

      --
      None of them can see the clouds; The polished wings don't care.
    2. Re:how do they get away with it? by MaxwellEdison · · Score: 2, Funny

      They feed while their prey is sleeping. If you don't believe me, ask the one waiting on the back of your curtains.

      --
      -=Bang Bang=-
    3. Re:how do they get away with it? by c0ck_l0rge · · Score: 2, Funny

      As a fellow mammal, I know that getting beaten off would make me go away..

      --
      nothin' sounds quite like an 808
    4. Re:how do they get away with it? by repapetilto · · Score: 3, Informative

      Yea they wait until the animal is sleeping then bite. Also I don't know if it was in this article or the NY times one posted somewhere here that said the spit also has some sort of painkiller in it.

    5. Re:how do they get away with it? by gardyloo · · Score: 2, Funny

      As a fellow mammal, I know that getting beaten off would make me go away.

      No way. You'd just roll over and fall asleep.

  14. BATS? Yawn. by whitehatlurker · · Score: 3, Interesting
    Bats are old hat - vampire moths are the next wave.

    (Oblig. Wikipedia reference.)

    Granted, a moth costume is more difficult to make for Halloween.

    --
    .. paranoid crackpot leftover from the days of Amiga.
  15. Re:What it should be. by Anonymous Coward · · Score: 2, Funny

    not to mention all that iron... geez, it must be a sad part of the day when they have to go #2

  16. There is a nature-nurture argument by unassimilatible · · Score: 3, Interesting

    As a lawyer, I can say that there is dispute on whether law school attracts assholes, or produces them. I'd say it's a combination of both.

    All kidding aside, unlike other grad schools which encourage teamwork, law school pits students against each other in many ways. This isn't necessarily a bad thing for advocates, but it does help explain why lawyers tend to be such dicks.

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    Slashdot "libertarians": Small government for me, big government for those I disagree with. -1, I disagree with you
  17. Re:What it should be. by jonaskoelker · · Score: 2, Funny

    No garlic? Count me out!

    Wait, are you saying that's why I'm such a "hit" at parties?

  18. Re:What it should be. by tngaijin · · Score: 2, Funny

    Hell I honestly think I could live with the weaknesses if it meant immortality.

    I mean seriously what do vampires have against them? An inability to interact with religious objects, an aversion to sunlight, no reflection, and they can't eat garlic?

    I'd bet that 1 and 2 aren't an issue for most Slashdotters anyways, and most probably don't care about their own reflection either (heck usually when I see mine it's a glare on my screen so if I didn't show up then all the better). The garlic thing might be an issue, but I'm sure me and Papa John's could work something out.

    "Just send over a delivery guy with marinara sauce, pepperoni and cheese on his neck please."