A new study is the first to show parasites can influence behavior in gray wolves—compelling researchers to think more broadly about what influences how animals act
Photograph by Science History Images, Alamy Stock PhotoFor the new study, published recently in, Cassidy and colleagues drew on 26 years of behavioral data and blood samples from Yellowstone wolves, going back to when the canines were reintroduced to the park in 1995.
They also analyzed the spatial distribution of cougars in the park and blood samples from the big cats, which are knownThe results showed that wolves living in territories overlapping with cougars were more likely to be infected withWhat’s more, wolves that tested positive for the parasite were 11 times more likely to disperse from their pack and more than 46 times more likely to become a pack leader than uninfected wolves.
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Mind-controlling parasite turns wolves into pack leadersA parasite that can alter animal behavior is changing the habits of infected wolves in Yellowstone, increasing aggression and goading them into taking greater risks.
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'Mind control' by parasites influences wolf-pack dynamics in Yellowstone National Park | CNNGray wolves in Yellowstone National Park infected with toxoplasmosis, caused by the T. gondii parasite, are 46 times more likely to be the leader of the pack, according to a new study.
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A Brain Parasite Is Making Wolves Into Pack Leaders, Scientists SayIt seems that grey wolves are the latest victims of toxoplasmosis — but in their case, the effects of the brain worm are kind of, well, based.
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