Cicadas shoot urine droplets around – every second

Some leafhoppers Contains immense nutrition. Day after day, they excrete about 300 times their body weight in tiny droplets from their rear end. This is made possible by a special device of a kind, led by researchers from the Georgia Institute of Technology, Saad Bamla, in the special issue. “Natural Communication” write down The researchers’ videos show how the tiny animals shoot tiny water droplets every second.

In comparison: According to researchers, the amount of daily excretion in humans is only 2.5 percent of their body weight on average.

A trick to save energy

According to the researchers, cicadas (Homalotisca vitribenis), only a few millimeters in size, feed exclusively on the so-called xylem sap, which is very poor in nutrients and consists almost exclusively of water. Animals must absorb large amounts of plant extracts accordingly. You have one An efficient digestive system, which can filter large amounts of plant secretions and transport them through the body. To then get rid of the water, these cicadas use a special mechanism that specifically accelerates the expelled water droplets, the researchers write.

The whole thing could be a strategy for the cicadas to save energy, since energy consumption is significantly higher than with other methods, write the researchers, who used numerous mathematical models for their study. throw away the excrement, Keep enemies at bay. Because the droplets land somewhere, potential attackers are unaware of the cicadas’ whereabouts.

(Fee/DPA)See comments