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This is Scientific Americans 60 Second Science.

I'm Karen Hopkins. Believe it or not, mosquitoes don't bite out of spite.

Female mosquitoes of the species 80s Egypti need the nutrients present in your plasma to ensure the proper development of their eggs.

And though their thirst may seem unquenchable,

the ladies actually take time to savor your blood once they've sipped their fill.

After a female bites, she'll double her body weight,

and then she'll actually completely lose interest

in biting people for several days.

Laura Duval, a postdoctoral researcher at the Rockefeller University in New York City.

The insect's post-Pranial recovery phase,

made Duval and her colleagues wonder

whether they could essentially trick mosquitoes into thinking they'd already eaten.

...