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Geographic Distribution and Ecology of Triatoma dimidiata (Hemiptera: Reduviidae) in Colombia
Triatoma dimidiata Latreille is the second most important vector of Chagas’ disease in Colombia and is found in urban and periurban areas. From January 2007 to June 2008, we performed field work in 8 departments, 18 municipalities, and 44 rural villages, covering most of its known distribution and all of its ecological zones in the country. The goal was to determine the geographical distribution, the ecology, and house infestation indices of T. dimidiata over its range and hence the Chagas’ disease transmission risk. In Colombia, T. dimidiata occupies a wide variety of ecosystems, from transformed ecosystems in...
Source: Journal of Medical Entomology - January 12, 2016 Category: Biology Authors: Parra-Henao, G., Angulo, V. M., Osorio, L., Jaramillo-O, N. Tags: Sampling, Distribution, Dispersal Source Type: research

Synanthropic Cockroaches (Blattidae: Periplaneta spp.) Harbor Pathogenic Leptospira in Colombia
Leptospirosis cases in Colombia are typically linked to peridomestic rodents; however, empirical data suggest that Leptospira-infected patients with no apparent exposure to these reservoirs are common. Cockroaches (Periplaneta spp.) have equal or greater interaction with humans than rodents, yet their potential role as carriers of Leptospira has not been assessed. We determined if pathogenic Leptospira is harbored by Periplaneta spp. in Cali (Colombia) and the variables influencing this relationship. Fifty-nine cockroaches were captured from seven sites and DNA was extracted from the body surface and digestive tract for a ...
Source: Journal of Medical Entomology - January 12, 2016 Category: Biology Authors: Gonzalez-Astudillo, V., Bustamante-Rengifo, J. A., Bonilla, A., Lehmicke, A. J. J., Castillo, A., Astudillo-Hernandez, M. Tags: Vector/Pathogen/Host Interaction, Transmission Source Type: research