The Movement of Pathogen Carrying Flies at the Human-Wildlife Interface.

Area of Science:

• Ecology
• Epidemiology
• Entomology

Background:

• Flies associate with humans and nonhuman primates, posing disease transmission risks.
• Understanding fly movement is crucial for managing pathogen spread in biodiverse areas.

Purpose of the Study:

• To investigate the movement of nonhuman primate-associated flies in Kibale National Park, Uganda.
• To assess the potential of flies as vectors between nonhuman primates and humans.

Main Methods:

• A mark-recapture experiment was conducted on flies associated with nine nonhuman primate groups.
• Flies were marked and recaptured at distances of 50m, 200m, and 500m from marking sites.
• Metabarcoding was used to identify eukaryotic parasite DNA in flies.

Main Results:

• Flies marked in nonhuman primate groups were recaptured in human-inhabited areas.
• Eukaryotic primate parasite DNA was detected in flies from nonhuman primate groups.
• Demonstrated fly movement from primate groups to human-associated areas.

Conclusions:

• Flies act as potential vectors between nonhuman primates, livestock, and humans.
• Highlights the risk of pathogen transmission at the wildlife-human interface in Kibale National Park.
• Supports the need for integrated disease management strategies in areas with high biodiversity and human activity.