Jellyfish the Next Locusts?

Discussion in 'Earth Science' started by Orleander, Nov 22, 2007.

  1. Orleander OH JOY!!!! Valued Senior Member

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    I wonder what they are doing to their natural habitat.

    Billions of jellyfish wipe out N. Irish salmon farm


    DUBLIN, Ireland (AP) -- The only salmon farm in Northern Ireland has lost its entire population of more than 100,000 fish, worth $2 million, to a spectacular jellyfish attack, its owners said Wednesday.

    The Northern Salmon Co. Ltd. said billions of jellyfish -- in a dense pack of about 10 square miles and 35 feet deep -- overwhelmed the fish last week in two net pens about a mile off the coast of the Glens of Antrim, north of Belfast.

    Managing director John Russell said the company's dozen workers tried to rescue the salmon, but their three boats struggled for hours to push their way through the mass of jellyfish. All the fish were dead or dying from stings and stress by the time the boats reached the pens, he said.

    Russell, who previously worked at Scottish salmon farms and took the Northern Ireland job just three days before the attack, said he had never seen anything like it in 30 years in the business.

    "It was unprecedented, absolutely amazing. The sea was red with these jellyfish and there was nothing we could do about it, absolutely nothing," he said.

    The species of jellyfish responsible, Pelagia nocticula -- popularly known as the mauve stinger -- is noted for its purplish night-time glow and its propensity for terrorizing bathers in the warmer Mediterranean Sea. Until the past decade, the mauve stinger has rarely been spotted so far north in British or Irish waters, and scientists cite this as evidence of global warming.

    Russell said the company, which bills its salmon as organic and exports to France, Belgium, Germany and the United States, faces likely closure unless it receives emergency aid from the British government.
     
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  3. cosmictraveler Be kind to yourself always. Valued Senior Member

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    There's a frequency that would make the jellyfish back away from the

    areas. All they need do is put the hydrophones into the waters nearby and

    turn on that frequency. That should keep the fish happy as well as not

    hurting the jellyfish.
     
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  5. Orleander OH JOY!!!! Valued Senior Member

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    ?? I've never heard that. Do you have a link?
    Why didn't the jellyfish swim from the boats then?
     
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  7. cosmictraveler Be kind to yourself always. Valued Senior Member

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    I have no link only my hypothesis that everything reacts to certain

    frequencies at certain decibels. It is my theory that anything can be moved

    with the right frequencies as well as killed.
     
  8. iceaura Valued Senior Member

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    They don't swim, they drift.
     
  9. Read-Only Valued Senior Member

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    Not entirely correct. Although they certainy drift with the currents, they also swim with slow, pulsating motions.
     
  10. Orleander OH JOY!!!! Valued Senior Member

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    are they 'herded along' by sound?
     
  11. maxg Registered Senior Member

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    I suspect that we'll be seeing more of these jellyfish swarms since their natural predators (large fish like swordfish & tuna) are being decimated. I guess we should start thinking of ways to add more jellyfish to our diet.
     
  12. cosmictraveler Be kind to yourself always. Valued Senior Member

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    The Japanese have been eating them for centuries. I've had jellyfish at my

    local sushi bar and they aren't bad.


    "In the meantime locals are making the best of it — rather than just complaining about jellyfish they are eating them.

    Jellyfish are an unusual ingredient of Japanese cuisine but are much more prized in China. Coastal communities are doing their best to promote jellyfish as a novelty food, sold dried and salted.

    Students in Obama have managed to turn them into tofu, and jellyfish collagen is reported to be beneficial to the skin."


    http://www.timesonline.co.uk/tol/news/world/asia/article749446.ece
     
  13. kmguru Staff Member

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    11,757
    I am sure ADMs of the world will come up with a Jelly fish specific pesticide. But, we should find out the disruptions in the ecosystem first.
     
  14. Bluecrux Light Bearer Registered Senior Member

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    78
    Oh dear, seems like we need marine pesticides.
     
  15. Orleander OH JOY!!!! Valued Senior Member

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    Do you think it has anything to do with changes in the water temp? It seems they are extending their habitat.
     
  16. maxg Registered Senior Member

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    710
    Could be. I don't know to what degree they're effected by temperature.

    I did read though (on Wikipedia) that researchers reported in 2006 that in the "heavily fished region off the coast of Namibia...jellyfish have overtaken fish in terms of biomass."
     
  17. GeoffP Caput gerat lupinum Valued Senior Member

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    Jellyfish swarms, eh? :scratchin:


    Coming to a theatre near you! The most horrifying tale you've ever heard!

    "THE JELLYFISH THAT ATE BRITISH COLUMBIA!"

    Please Register or Log in to view the hidden image!



    SHRIEK as you watch the tentacles pull frightened Victorian villagers into the waiting maws of doom!

    SCREAM as the pallid, see-through flesh bobs around the docks!

    RAWWR as Helena and Joey find love!

    Starring

    Rock Hudson as Joey

    Eleanor Burglethwait as Helena

    Cosmictraveler as Professor Madfinkelstein

    And Baron Max as Ruffy
    !

    Chills, thrills and massive industrial fish kills in:

    "THE JELLYFISH THAT ATE BRITISH COLUMBIA"
     
    Last edited: Nov 24, 2007
  18. GeoffP Caput gerat lupinum Valued Senior Member

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    Oh yeah: Ireland.

    Well, whatever.
     
  19. Captain Kremmen All aboard, me Hearties! Valued Senior Member

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    What flavours of jellyfish are there?
     
  20. cosmictraveler Be kind to yourself always. Valued Senior Member

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    Same as regular jams and jellies that you'd find at the market!

    Please Register or Log in to view the hidden image!

     
  21. cosmictraveler Be kind to yourself always. Valued Senior Member

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    :xctd::roflmao::xctd:
     
  22. Captain Kremmen All aboard, me Hearties! Valued Senior Member

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    I hate jellyfish.
    They are 99% water,
    and the other 1% they devote into being
    stingy blobby nuisances.
     
  23. madanthonywayne Morning in America Staff Member

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    Perhaps we should all take up 'Jelly fishin'"

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