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Artificial Misting System Allows Reintroduction of Extinct Toad

terrancem writes "The Kihansi Spray Toad went extinct in the wild in 2005 when its habitat in Tanzania was destroyed by a dam. However conservationists at the Bronx Zoo managed to maintain a captive population which is now large enough to allow a bold experiment to move forward: reintroducing the toad into its old habitat. To make the once tropical gorge moist again, engineers have designed an artificial misting system that should allow toads to survive in the wild. The effort marks what may be the first time conservationists have ever re-established an 'extinct' species in a human-engineered ecosystem."

12 of 121 comments (clear)

  1. A very unusual toad by serviscope_minor · · Score: 5, Interesting

    These toads are very unusual. The noise of the waterfall makes croking an impractical method of communication. They instead use hand signals to communicate.

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    1. Re:A very unusual toad by Loosifur · · Score: 4, Funny

      Do you have a reference for that? Because I just blew twenty minutes looking for videos of frogs signing to each other when I could have been watching porn.

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    2. Re:A very unusual toad by Loosifur · · Score: 5, Funny

      No, but the resulting juxtaposition just does weird things to you after awhile. You start getting some funny ideas when you see Kermit on television, that sort of thing.

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    3. Re:A very unusual toad by riT-k0MA · · Score: 3, Interesting

      Not strictly true.
      The dense vegetation makes it implausible for the frogs to communicate by hand signals alone. Rather it is thought they use a mix of body language and ultrasonic sound over a short distance in order to communicate.
      The Ultrasonic part is only a guess as the middle part of the frogs ear is not air-filled, and the inner part of the ear does not seem to be connected to any outer surface of the frog. This can be tested, but the scientists can't exactly vivisect a critically-endangered animal, so they have to guess.

  2. Re:Extinct? by Rockoon · · Score: 5, Funny

    The lesson that we can take away from this is that good editors should have been kept in zoos too.

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    "His name was James Damore."
  3. Re:Extinct? by immaterial · · Score: 3, Funny

    You keep using that word, I do not think it means what you think it means!

  4. Re:Hydroelectric, anyone? by Anonymous Coward · · Score: 3, Insightful

    You go ahead and use less electricity. I suggest starting with turning off your computer. You're not using it for anything worthwhile anyway.

  5. Re:Extinct? by davmoo · · Score: 5, Informative

    The editors are correct. It very clearly says "extinct in the wild". "In the wild" does not include "in captivity".

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  6. Extinct again by ByteSlicer · · Score: 3, Insightful

    I hope they keep a few captive, because otherwise they will go extinct again the first time that artificial mist breaks down (things tend to break in time, especially in the tropics).

    Actually, a bit of googling told me this happened before in 2003.

  7. Re:Extinct? by dywolf · · Score: 3, Informative

    And the call is....no foul on the editors! The summary says right there "extinct in the wild"

    Extinct in the wild is a valid classification, used when biologists are unable to confirm a types existence in...the wild..., or when they are only able to find 1 or 2 specimens, which is also sometimes called "functionally extinct". such as the last of one of the giant tortoise subspecies that died recently, that was the sole remaining member known, and male, and as such totally unable to breed and continue the (sub)species.

    So you are very very -NOT- insightful.

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  8. Re:Hydroelectric, anyone? by dywolf · · Score: 4, Insightful

    Microecosystems are very fragile yes. But they are also not typically that common. that is micro-ecological systems where a species is severely restricted one waterfall, one pool (Devils Hole Pupfish), etc. Such critters are essentially relics, that got super attached to one thing, and that one thing is now cutoff. In essence, they overadapted in the wrong direction, and are thus naturally headed to extinction even if we didn't build the dam (unless the system somehow reverses itself and their small little niche grows once more).

    It's like if a three legged cat in a world of dogs managed to still exist by only living on top of a high butte above the plain...and then an earthquake leveled the butte and now the cats are on the same level as the dogs, and thus now become dogchow.

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  9. Re:Extinct? by arth1 · · Score: 4, Insightful

    Once humans die out or someone turns off the system, then these toads are toast.

    Mmm, toasted toad...

    Seriously, if an artificial misting system is needed to keep them alive, the chances of their survival is none. I give it max 20 years before it gets turned off for budgetary concerns or maintenance neglect, or conflicts with local people who wants the land and its resources.

    http://www.google.com/search?q=failed+conservation+efforts+in+tanzania

    Any which way, they'll croak.