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Frog Population
resists
Killer Fungus
A Foundation
funded survey has made a discovery that spells hope for the future
of the endangered Green and Golden Bell Frog.
A population
of these frogs at Lake Meroo seems to be resistant to the deadly
chytrid fungus disease, which has already killed off hundreds of
frog species worldwide.
The fungus
is rapidly spreading across the world, affecting the frogs’
skin and causing them to suffocate. The disease flourishes in warm
climates and appears to spread even faster with global warming.
Scientists
believe that the distinct chemical make-up of the water in Lake
Meroo acts as a natural fungicide that kills the fungus but does
not harm the frogs.
The lake is
brackish and occasionally open to the sea, providing ideal conditions
for sulphur releasing bacteria to grow in the bed of the lake. Sulphur
like copper, is a natural fungicide, that kills the fungus but is
not harmful to the frogs. Copper, is found at other sites where
the frog survives, such as Port Kembla steelworks near Wollongong.
Scientists are yet to establish if and how this discovery can be used to protect other wild populations of Green and Golden Bell Frogs from the fungus.
Image: © Lance Jurd
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