New Study: Only takes HALF as much Vibrio bacteria to KILL FISH if in low oxygen and high carbon dioxide environment -- "Cell death" indicated in "only a day"


Coastal creatures may have reduced ability to fight off infections in acidified oceans, American Physiological Society, August 5, 2010:

Louis Burnett, professor of biology and director of the Grice Marine Laboratory of the College of Charleston, and Karen Burnett, research associate professor at Grice Marine Laboratory of the College of Charleston, study the effects of low oxygen and high carbon dioxide on organisms' immune systems. They have found that organisms in these conditions can't fight off infections as well...

The researchers examined fish, oysters, crabs and shrimp, and showed that all these animals have a decreased ability to fight off infection of Vibrio bacteria when subjected to low oxygen, high carbon dioxide conditions. It takes about half as much bacteria to administer a lethal dose to a creature in a low oxygen, high carbon dioxide environment. ...

"After exposure to these conditions for only a day, animals at the molecular level have given up in trying to adapt to the situation, and they are going into molecular pathways that indicate cell death," says Karen Burnett.

Might this be why Louisiana officials are avoiding doing any tests on the recent massive fish kills? See:

2 comments to New Study: Only takes HALF as much Vibrio bacteria to KILL FISH if in low oxygen and high carbon dioxide environment -- "Cell death" indicated in "only a day"

  • premurderedGOM

    Don't take long to kill humans either. Stay out of the water....

  • premurderedGOM,

    Acidity is quite the disease producer; humans whose blood *goes* acid are in the same boat as are the fish. Above the waters, the O2 levels in the air we breathe is inconsistent with our needs. Our O2 environment should be a touch over 30% or so: The percentage should be at equilibrium with CO2 (forgot exact %s).

    We are multicellular organisms and in spite of our size in comparison to unicellular organisms, when it comes down to our cellular needs, decreased O2 will cause disease and immunological fragility, just like the aquatic life whose home is the ocean.

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