Journal
REVISTA DA SOCIEDADE BRASILEIRA DE MEDICINA TROPICAL
Volume 41, Issue 4, Pages 330-333Publisher
SOC BRASILEIRA MEDICINA TROPICAL
DOI: 10.1590/S0037-86822008000400002
Keywords
Peridomestic vector; Vector capacity; Chagas disease vector; Triatoma patagonica; Triatoma infestans
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Funding
- Secretara de Ciencia y Tecnica de la Universidad Nacional de Cordoba, Argentina (SeCyT)
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Among the vectors of Chagas disease, Triatoma patagonica is a species in the process of adaptation to the human environment. However, its vector competence is not well known. This study had the aim of evaluating and comparing feeding and defecation patterns among fifth-instar nymphs of Triatoma patagonica and Triatoma infestans that were fed ad libitum. The results showed that nymphs of Triatoma patagonica had a feeding pattern similar to that of Triatoma infestans. Sixty nine percent and 58% of nymphs of Triatoma patagonica and Triatoma infestans, respectively, produced their first defecation within five minutes after being fed. Triatoma patagonica defecated during feeding, with an average time until first defecation that was shorter than that of Triatoma infestans (3.4 and 6.2 min, respectively). The nymphs of Triatoma patagonica were capable of defecating during or immediately after feeding.
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