Effect of Fasting on Trypanosoma Cruzi Infection in Triatoma Dimidiata (Hemiptera: Reduviidae)1

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Abstract
A group of 101 nymphs and adults of Triatoma dimidiata naturally infected with Trypanosoma cruzi was subjected to continuous fasting under laboratory conditions. Twenty of these insects (19.8%) were no longer infected at the time they died (mean life-span: 163.7 days). Of a control group of 93 infected nymphs and adults that fed periodically on pigeons, only 5 insects (5.4%) were negative at the time they died (mean life-span: 250.4 days). The difference between percentages in the 2 groups was statistically significant (P < 0.01).

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