Analysis of the Behavior of Triatoma bolivari found near Chamela, MX

Triatoma sp

• Vector of Chagas disease in mammals

• Blood is only food source and may contain T. cruzi in feces

Triatoma bolivari

• Research at EBCh recently found 46% of T. bolivari infected with T. cruzi .

• Most T. bolivari were collected near outdoor lights near EBCh buildings.
  • Light attraction by triatomines is considered an infestation risk factor for human dwellings. 
• Feed on squirrels, deer, toads, and other animals

Trials & Methods

Attraction towards Lights

• Tested preference for Color Temperature (Kelvins)

Attraction towards heat (Thermal tests)

• Cup hot water - no effect seen

Attraction towards carbon dioxide. 

• Alka-seltzer disolving in cup with water - no effect seen

Attraction towards other insects / noisy insects - no effect seen

• Assortment of different beetles captured
• Container placed on one side of Triatomatron

Findings

• Similar responses towards all lights tested.
• The brightest lights were slightly more attractive.
• Prefered white light over ultraviolet lights.
• Too much light caused inactivity.

• Activity of the T. bolovari was recorded during trials and used to graph activity during night.