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Dispersion and colonization of Triatoma ryckmani (Hemiptera: Reduviidae) in artificial environments in a semiarid region of Chagas disease endemic area in Guatemala
Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics. Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Faculty of Science and Technology, Department of Evolution, Genomics and Systematics, Systematic Zoology. Systematisk zoologi. (Medicinsk entomologi)
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2004 (English)In: Acta Tropica, Vol. 91, 145-151 p.Article in journal (Refereed) Published
Abstract [en]

The colonization capacity and dispersal of sylvatic populations of Triatoma ryckmani Zeledón and Ponce were investigated by means of experimental chicken coops installed within the semiarid region in the Department of El Progreso, Guatemala. In the four artificial habitats a total of 672 T. ryckmani was found as well as two males of T. dimidiata (Latreille). Triatomine densities were not the same in the four chicken coops. From one chicken coop 53.4% (359) of the triatomines were collected. Full colonization, i.e. all stages from egg to adult found at the same time, took place in the fourth month after the first female’s arrival. High dispersal and colonization capacity of T. ryckmani was evident; adult dispersal occurs mainly during the dry and coolest season (November–February). The overall female/male sex ratio was 2:1; more females than males were found throughout the year. Most of the triatomines in the shelter inside the chicken coops were found on the northern (43%; with less heat and sunlight) and eastern side (35%; more windy). This is the first report on the colonization capacity and population dynamics of T. ryckmani in artificial habitats in a Chagas disease endemic area of Central America.

Place, publisher, year, edition, pages
2004. Vol. 91, 145-151 p.
Keyword [en]
"Triatoma ryckmani", "Mobility", "Seasonal activity", "Semiarid region", "Chagas disease", "Guatemala"
Identifiers
URN: urn:nbn:se:uu:diva-70321OAI: oai:DiVA.org:uu-70321DiVA: diva2:98232
Available from: 2005-04-20 Created: 2005-04-20 Last updated: 2011-01-12

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