alexa Bumblebees use nicotine to fight off parasites

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Bumblebees use nicotine to fight off parasites

Bumblebees that have been infected by parasites seek out flowers with nicotine in the nectar, likely to fight off the infection, new research has found. The nicotine appears to slow the progression of disease in infected bees but has harmful effects when consumed by healthy bees. Infected bumblebees that consumed nicotine delayed the progress of the infection for a few days, showing lower levels of parasites than those that had not. However, it did not increase the life expectancy of those bees, meaning that the direct benefits of nicotine for the bee colony remain to be identified. Consuming nicotine also had negative effects, appearing to suppress the appetite of infected bees much like smoking does in humans. Healthy bees that consumed nicotine also showed shorter lifespans than those that did not consume any. Bees are not the only species known to use nicotine to fight parasites, with house sparrows using cigarette butts in their nests to ward off mites.

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