Slashdot Mirror


"Disco Clam" Lights Up To Scare Predators Away

sciencehabit writes When predators get close, the bright, orange-lipped "disco clam" flashes them to scare them off. But it's not just the light that's important. Researchers have found that the clam has sulfur in its fleshy lips and tentacles and suspect that, like another clam species that drop tentacles laden with sulfuric acid to deter predators, the disco clam's sulfur also gets converted into a distasteful substance. The flashing may warn predators away, similar to the bright orange of a monarch butterfly warning birds of its toxic taste.

11 of 49 comments (clear)

  1. Clickbait by Racemaniac · · Score: 2, Funny

    Do we really need clickbait titles like "disco clam" on slashdot...

  2. Re:Useless site by thegarbz · · Score: 4, Funny

    Why nowadays these useless sites require javascript to to display even the most basic content?

    Yeah what's up with that. Why bother even using HTML? Can't they just fax me a copy of the content?

  3. Re:Useless site by Anonymous Coward · · Score: 2, Funny

    Dear Mr. Clam,

    1995 used a dial-up modem from a landline to send an email requesting their <blink> tags back.

    Sincerely,
    2015

  4. Useless TITLE. by Anonymous Coward · · Score: 2, Informative

    Title: "DISCO CLAM" Lights up to scare predators away!
     
    Summary: It's not really the light that scares them away.
     
    Hey, idiot editors! Would you please post a summary that has some consistency with the title?

    1. Re:Useless TITLE. by The+Real+Dr+John · · Score: 3, Insightful

      Title at Science Magazine where the video is posted: "'Disco clam' lights up to scare predators away". From the article "The clams, which live off Indonesia, flash twice as much when they spot predators". Somehow, the title does not seem inconsistent with the findings. Maybe folks should read the content before commenting on it.

      --
      A brain is a terrible thing to waste... Mind? That's debatable.
    2. Re:Useless TITLE. by OzPeter · · Score: 2

      Maybe folks should read the content before commenting on it.

      Blasphemy!

      --
      I am Slashdot. Are you Slashdot as well?
  5. Re:Useless site by Zocalo · · Score: 3, Insightful

    Because by forcing you to enable JavaScript to view their content they get more options for trying to serve you some ads and tracking you as well? If there's not an obvious "print view" or some other workaround I generally respond by just voting with my feet and closing the tab because I'm not going to be enabling JavaScript on a random site unless it's for content I *really* want to see. I suppose you could also get pissy about it because it's highly unlikely that such sites would comply with things like disability legislation requirements for screen reader compatibility and the like, but that's too much effort for me.

    --
    UNIX? They're not even circumcised! Savages!
  6. Re:Useless site by Paradise+Pete · · Score: 3, Interesting

    Why bother even using HTML? Can't they just fax me a copy of the content?

    Back in the mid 90's I was working for a small company that had a marketing director who, when he saw something on the "world wide web" that he thought would be useful to us, would actually print it out and fax it to us.
    And then later he hired someone to make up some images for the web site. He called me up and asked what was the best way to get it to me? Which courier service? I said "Can't you email them?" "Oh no," he said. "I want to make sure you get them."

  7. Staying Alive by retroworks · · Score: 2

    The article is about how the flashing acts as a defense mechanism against predatory shrimp.

    Ah. Ah. Ah. Ha. Staying aliiiiiive!

    --
    Gently reply
  8. Re:Useless site by gstoddart · · Score: 5, Insightful

    You snark ... but that page has 11 scripts from itself, 1 from assets.adobetm.com, 1 from brightcove, 1 from apis.google.com, 1 from ajax.google.com, and one from platform.twitter.com.

    The amount of shit which comes in the form of Javascript is mind boggling .. let alone all of the web bugs and beacons for the assholes who run the analytics companies.

    Basically they intentionally write their pages so they pretty much don't work unless you're allowing the other crap to run. So, yes, I think the GP has a perfectly valid point. You don't need javascript to display the basic text of your story or do your page layout.

    It's just garbage written by lazy people who are beholden to advertising companies.

    Fortunately, with enough plugins, you can block this crap

    --
    Lost at C:>. Found at C.
  9. Researchers? by The+Grim+Reefer · · Score: 2

    The bright, orange-lipped âoedisco clamâ (Ctenoides ales) became a phenom last year when researchers learned that its dazzling display (see video above) proved to be reflections of ambient light and not light produced by the clams themselves.

    I've been in the marine reef keeping hobby for several decades, though I haven't had a tank set up in some time. I've kept this species for many years. They are call "electric flame scallops" in the hobby. Even though they are clams and not scallops. But I have to wonder who these researchers are to have just discovered that they do not actually produce light. I've known for at least 20 years that these clams produce this effect by moving parts of their mantle to expose a bluish white streaks under the reddish-orange part.