The periodical cicadas that are about to infest two parts of
These insects are the strongest urinators in the animal kingdom with flows that put humans and elephants to shame. They have pumps in their heads that pull moisture from the roots of trees, allowing them to feed for more than a decade underground. They are rescuers of caterpillars.
And they are being ravaged by a sexually transmitted disease that turns them into zombies.
PUMPS IN THE HEAD
Inside trees are sugary, nutrient-heavy saps that flow through tissue called phloem. Most insects love the sap. But not cicadas — they go for tissue called
And it's not easy to get into the
They use their proboscis like a tiny straw — about the width of a hair — with the pump sucking out the liquid, said
“It's a hard way to make a living,” Deans said.
GOING WITH THE FLOW
All that watery fluid has to come out the other end. And boy does it.
Bhamla in March published a study of the urination flow rates of animals across the world. Cicadas were clearly king, peeing two to three times stronger and faster than elephants and humans. He couldn't look at the periodical cicadas that mostly feed and pee underground, but he used video to record and measure the flow rate of their
They have a muscle that pushes the waste through a tiny hole like a jet, Bhamla said. He said he learned this when in the
“You walk around in a forest where they're actively chorusing on a hot sunny day. It feels like it's raining,” said
GOOD FOR CATERPILLARS
In the years and areas where cicadas come out, caterpillars enjoy a cicada reprieve.
Periodical cicadas are “lazy, fat and slow,” Gruner said. “They're extraordinarily easy to capture for us and for their predators.”
ZOMBIE CICADAS
There's a deadly sexually transmitted disease, a fungus, that turns cicadas into zombies and causes their private parts to fall off, Cooley said.
It's a real problem that “is even stranger than science fiction,” Cooley said. “This is a sexually transmitted zombie disease.”
Cooley has seen areas in the Midwest where up to 10% of the individuals were infected.
The fungus is also the type that has hallucinatory effects on birds that would eat them, Cooley said.
This white fungus takes over the male, their gonads are torn from their body and chalky spores are spread around to nearby other cicadas, he said. The insects are sterilized, not killed. This way the fungus uses the cicadas to spread to others.
“They're completely at the mercy of the fungus,” Cooley said. “They're walking dead.”
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