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  1. #1
    Pearl Diver Senior Pearl-Guide.com Pearl Expert Mikeyy's Avatar
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    Default Oysters Can Hear Your Noise Pollution and Itís Stressing Them Out

    The newts play the flute, the carp play the harp, but the oysters arenít having any of this nonsense and want all of the Little Mermaidís musically inclined friends to give them some peace and quiet already.

    Or at least theyíd sure as heck like humans to just give them some peace and quiet already. Thatís according to a new study published today in the journal PLOS ONE, which looked at how oysters respond when blasted with sound.

    ďThese animals are very easily stressed, and when you are stressed your ventilation [breathing] is modified as well as your heart activity (heartbeat), etc.,Ē lead author Jean-Charles Massabuau, a marine biologist at the French National Centre for Scientific Research, wrote to Newsweek in an email.

    Massabuau had been working on a separate project and visiting a commercial port, when a diver happened to mention he had never dived in a spot so noisy. So Massabuau wondered if the oysters could hear all that ruckus. He and his colleagues decided to find out by exposing oysters to noise in a lab.

    They measured how upset the oysters were when blasted with sound by tracking how long the critters spent with their shells shut, the molluscan equivalent of putting in earplugs. But unlike earplugs, shutting out the world around them for oysters means passing up crucial resources. ďWhen they are closed, they canít eat and they canít breathe,Ē Massabuau wrote. While oysters shut themselves up naturally as well, adding more shut-shell time does affect their bodies, Massabuau found.

    According to the new paper, oysters are particularly sensitive to noises pitched between 10 Hz and 200 Hz, relatively lower sounds.

    The study adds to a few other early experiments suggesting mollusks can sense noises, which can affect their health. That means we should expand our concerns about the impact of noise pollution beyond todayís focus on only dolphins and whales, Massabuau added. A huge range of human activities make the ocean noisy, including ships passing by to underwater construction and mining, and military sonar instruments.

    ďThe results of this paper fit within an increasing body of scientific literature which is indicating that anthropogenically produced water-borne sound, and associated vibration within the sediment, is impacting invertebrates at a behavioral level,Ē Louise Roberts, a marine biologist at Dartmouth College who has also researched the effect of noise on ocean animals, wrote in an email to media outlets including Newsweek.

    If your mind went directly from oysters to dinner, you arenít alone. Roberts points out that oysters are a commercially valuable species, so they may draw more attention than other, less tasty shellfish, which could still play important ecological roles.

    Maybe one day continuing research will suggest the fluke isnít the duke of soul after all.

    http://www.newsweek.com/oysters-can-...hem-out-693008

  2. #2
    Museum Pearl Senior Pearl-Guide.com Pearl Expert JerseyPearl's Avatar
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    Sonic testing underwater is a huge issue here along the Jersey Shore. Environmental organizations vs climate science researchers. Usually these two team up, but this issue has been divisive.
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  3. #3
    Natural Pearl Senior Pearl-Guide.com Pearl Expert Red's Avatar
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    Birds are also stressed by noise. Researchers played city noise in a quiet meadow, and most of the birds up and left.

    Don't blame them.

  4. #4
    Museum Pearl Senior Pearl-Guide.com Pearl Expert BWeaves's Avatar
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    Just because they don't have ears, doesn't mean they can't feel the sound waves. This makes perfect sense. The research almost seems like a DUH project to me. It reminds me of the research project where they discovered that the perfect bait to catch mice was cheese, and the one where they discovered that the perfect formula to feed a baby was breast milk.

  5. #5
    First-graft Pearl Senior Guide Member judimcc6's Avatar
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    So, how would North Korea testing a nuclear bomb in the ocean go over????
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  6. #6
    Second-graft Pearl Senior Guide Member ericw's Avatar
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    Nuclear bomb tested by american army at Bikini, Frensh army's at Mururoa... Maybe it's why polynesian pearls are black ? Seriously, water is a good sound conductor, but only for the sound produced inside, or transmit by the ground, not air. In these cases, most of aquatic species are sensitive to it. In fact, many of them produce sound themselves, in particular fishs, crustaceans and, obviously, cetaceans. About oysters and mussels, it would be surprising that there nacre production is not affected by foreign vibrations, not usual as sound of weaves. In a other post, pearl farmer explained us that pearl's bag nacre building is sensitive to pressure on tissues, and sound is first a pressure variation.
    Last edited by ericw; 10-26-2017 at 04:07 PM.

  7. #7
    Museum Pearl Senior Pearl-Guide.com Pearl Expert JerseyPearl's Avatar
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    Quote Originally Posted by judimcc6 View Post
    So, how would North Korea testing a nuclear bomb in the ocean go over????
    Judi, seriously...we should all be paying attention!
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  8. #8
    First-graft Pearl Senior Guide Member judimcc6's Avatar
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    Sorry EricW, but the Koreans are threatening to detonate a nuclear bomb under water!
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  9. #9
    First-graft Pearl Senior Guide Member judimcc6's Avatar
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    Let me be more specific...North Koreans
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  10. #10
    Second-graft Pearl Senior Guide Member ericw's Avatar
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    judimcc6, maybe North Koreans are threatening to do that . What I have said didn't want to turn that to joke. There are so many irresponsible behaviors, today and everywhere, that the world become very worrying...

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