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American Focus > Blog > Tech and Science > Putting vampire bats on treadmills reveals an unusual metabolism
Tech and Science

Putting vampire bats on treadmills reveals an unusual metabolism

Last updated: November 5, 2024 10:50 pm
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Putting vampire bats on treadmills reveals an unusual metabolism
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Vampire bats have evolved to become highly specialized bloodsuckers, with their metabolism resembling that of blood-feeding flies more than other mammals, according to a recent experiment.

The common vampire bat, known as Desmodus rotundus, not only relies on flying but also scurries along the ground to target cattle, horses, and other mammals for blood meals. Curious about the fuel sources these animals use, researchers devised a unique experiment to observe the bats’ metabolism while running on a custom treadmill.

During the experiment, it was observed that a significant portion of the carbon dioxide exhaled by the bats (up to 60 percent) came from metabolizing fuel other than carbohydrates or fats, which are typically used by running mammals. Instead, the bats derived much of their energy from a recent high-protein meal of cow blood, as evidenced by the presence of amino acids in the exhaled gases.

Furthermore, the ratio of carbon dioxide exhaled to oxygen used remained consistent as the researchers increased the treadmill pace from walking to running. This stability indicated that the bats were not fueling their exertions in the usual mammalian manner, where gas ratios change with increasing exercise intensity.

This discovery suggests that vampire bats primarily rely on metabolizing a recent blood meal to power their activities, a behavior previously observed in blood-feeding insects like tsetse flies and certain female mosquitoes. This unique metabolic strategy sets vampire bats apart from other mammals and highlights their adaptation to a blood-based diet.

While the basic chemistry of bat metabolism is not uncommon among mammals, the heavy reliance on amino acids for energy in vampire bats is noteworthy. This reliance on amino acids, which are not readily available for quick consumption, may make the bats more susceptible to starvation compared to other mammals that store conventional fuel sources like lipids.

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Overall, the study sheds light on the metabolic adaptations of vampire bats to their blood diet and underscores the unique physiological strategies that have evolved in these fascinating creatures.

TAGGED:batsmetabolismputtingRevealstreadmillsUnusualVampire
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