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Nel mezzo del cammin di nostra vita...

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Отведайте-ка собственного лекарства!
“In what amounts to a strange sort of payback, one modern technique used for vampire bat eradication involves the use of the anticoagulant warfarin. Isolated from a clover mold, warfarin has been marketed for humans since the 1950s as Coumadin. It remains (along with the lung-and intestine-derived compound heparin) a popular blood thinner for millions of patients prone to strokes or blood clots.

Vampire bats treated with warfarin are subject to no such medical benefits. After capturing the bats in mist nets, the animals are painted with a mixture of warfarin and Vaseline and then released so that they can fly back to their roosts. Since vampire bats spend a considerable amount of time grooming one another, the toxic paste is soon spread throughout the members of the roost—with deadly results. Bats soon perish as the ingested warfarin induces massive internal hemorrhaging, causing them to bleed to death.

A related, but less-cost-efficient, method of vampire control involves the inoculation of livestock with low doses of anticoagulants. Vampires feeding on the inoculated bovine blood suffer the same hemorrhagic fates as those grooming warfarin paste off their roost mates. While this systemic method eliminates the need to capture and correctly identify vampire bats, it does require the treatment of the entire herd in order to be effective.

In the end, both of these methods are successful because of the low reproductive rate in vampire bats. Like the vast majority of bats, vampires give birth to only one pup per year—a far cry from other mammal pests like rodents”

Excerpt From: Bill Schutt. “Dark Banquet: Blood and the Curious Lives of Blood-Feeding Creatures”, 2008.

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