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Bed bug aggregation on dirty laundry: a mechanism for passive dispersal
William T Hentley1, Ben Webster2, Sophie E F Evison2
1The Department of Animal and Plant Sciences, The University of Sheffield, Sheffield, UK. w.hentley@sheffield.ac.uk.
Scientific Reports
|September 30, 2017
Summary
Bed bugs hitch-hike globally by hiding in soiled clothing, attracted to the scent of travelers. This passive dispersal method explains their rapid worldwide expansion.
Area of Science:
- Entomology
- Urban ecology
- Pest management
Background:
- Global expansion of bed bugs (Cimex lectularius) linked to travel.
- Dispersal mechanisms for flightless insects remain unclear.
- Bed bugs are attracted to human cues like odor and CO2.
Purpose of the Study:
- Investigate the role of soiled clothing in bed bug dispersal.
- Determine if soiled clothing is a viable cue for bed bug aggregation.
- Clarify how bed bugs passively disperse via human travel.
Main Methods:
- Experimental arenas simulating bedroom environments.
- Choice experiments comparing attraction to clean vs. soiled clothing.
- Assessment of bed bug response to CO2 levels simulating human presence.
Main Results:
- Active bed bugs showed significantly higher attraction to soiled clothing compared to clean clothing.
- Elevated CO2 levels initiated general search behavior but did not direct it.
- Soiled clothing serves as a strong attractant for bed bug aggregation.
Conclusions:
- Soiled clothing in laundry bags is a primary mechanism for bed bug passive dispersal.
- Travelers leaving soiled clothing exposed facilitates bed bug hitchhiking.
- Understanding this dispersal route aids in preventing global bed bug spread.
