The longitudinal study on naturally infected Mepraia species detects fluctuations on Trypanosoma cruzi variants.
Successive feeding on infected Mepraia gajardoi suggests a decrease in parasite burden.
Survival of infected and fed nymphs and adults of Mepraia gajardoi can be studied for 4 months.
Trypanosoma cruzi DTU TcII need a prolonged feeding of Mepraia spinolai to be amplified.