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Lancet Liver Fluke Parasite Causes Zombie-Like Behavior in Ants, Study Shows

Ants zombie
Categories : Animals

A recent study has shed light on the zombie-like behavior exhibited by ants infected with the Lancet Liver Fluke parasite. With a comprehensive analysis of over 1,264 individual ants, researchers have not only uncovered intriguing insights into the effects of environmental factors on host behavior, but have also highlighted the potential implications for humans. Published in the journal Behavioral Ecology, this study offers valuable findings on the brain-altering capabilities of the parasite.

Ant Zombie-Like Behavior

The study focused on the effects of the Lancet Liver Fluke parasite, scientifically known as Dicrocoelium dendriticum, on infected ants. This parasite, found in North America, North Africa, Europe, and Asia, has the ability to infect a range of hosts, including ants, sheep, cattle, goats, and even humans. Referred to as a brain-altering parasite, it exerts control over the ant’s brain.

Research Methodology

The researchers conducted their study in the Bidstrup Forests near Roskilde, Denmark. By tracking the ants’ activity and observing the impacts of temperature, light, humidity, and time of day, they aimed to gain a deeper understanding of the infected ants’ behavior.

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Effects of Temperature and Light

Associate Professor Lund Fredensborg and Ph.D. student Simone Nordstrand Gasque found that the infected ants exhibited temperature sensitivity, which served as a protective mechanism against exposure to light or sunlight. The ants attached themselves to blades of grass, but their behavior changed on warm days.

Symptoms and Transmission

The Lancet Liver Fluke parasite primarily targets the ants’ brains, although there is only one possible entry point. It can also migrate to the host’s abdomen, affecting the small intestine and digestive organs. Infected ants pose a potential risk to grazers, such as sheep and cows, causing liver problems, gastrointestinal distress, and other infections. In humans, infection may occur through the consumption of infected ants, resulting in symptoms such as intense infection, irritation, swollen abdomen, diarrhea (including watery diarrhea), constipation, anemia, and painful liver.

Implications and Further Research

The discovery of the parasite’s ability to emerge in temperate areas provides important insights for researchers studying its behavior-altering effects. Understanding which chemical substances affect ants and induce zombie-like behavior can aid in developing strategies to counter the parasite’s impact.


The Lancet Liver Fluke parasite’s ability to manipulate ants’ behavior and transform them into zombie-like creatures highlights the fascinating and complex relationship between parasites and their hosts. This study serves as a significant contribution to the field of behavioral ecology and emphasizes the need for further research on the environmental factors influencing host behavior. Additionally, the potential impact on human health underscores the importance of raising awareness about the dangers posed by parasites such as the Lancet Liver Fluke.

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