http://jeb.biologists.org/cgi/content/full/208/17/i

Adding insult to injury… mosquitoes don’t just suck our blood — they urinate on us at the same time!

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…perhaps it wasn’t an artery; perhaps Betty is urophobic.

When a mosquito sucks blood from a human – and only pregnant female mosquitoes do this – it takes in twice its body weight in blood. To decrease this added weight, the mosquito urinates on its victim to release fluids.

Researchers have discovered that introducing a diuretic hormone into the mosquito causes the mosquito to excrete fluid rich in sodium chloride, the main salt in blood.

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