Browsing by Autor "David E. Gorla"
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Item type: Item , Biosystematics of Old World Triatominae(Elsevier BV, 1997) David E. Gorla; Jean‐Pierre Dujardin; Christopher J. SchofieldItem type: Item , Control of rural house infestation by Triatoma infestans in the Bolivian Chaco using a microencapsulated insecticide formulation(BioMed Central, 2015) David E. Gorla; Roberto Vargas Ortiz; Silvia CataláThe obtained results show an important long lasting effect on house protection against triatomine infestation in a region of known pyrethroid resistant populations of T. infestans, as the result of the slow release of the active ingredients, protected by the formulation microcapsule.Item type: Item , Morphological changes associated with brachypterous Triatoma guasayana (Hemiptera, Reduviidae) and their relationship with flight(Springer Nature, 2020) María Laura Hernández; Jorge Espinoza; Marinely Bustamante Gomez; David E. GorlaItem type: Item , Residual effect of a micro-encapsulated formulation of organophosphates and piriproxifen on the mortality of deltamethrin resistant Triatoma infestans populations in rural houses of the Bolivian Chaco region(Instituto Oswaldo Cruz, Ministério da Saúde, 2010) Abraham Gemio Alarico; Nahuel Romero; Laura Hernández Martínez; Silvia Catalá; David E. GorlaThe Bolivian Chaco is part of the endemic region of Chagas disease and an area where pyrethroid resistant Triatoma infestans (Hemiptera: Reduviidae) populations has been reported. The World Health Organization identified these resistant populations as an important focus for research. The objective of this study was to evaluate the residual effect of a micro-encapsulated formulation containing organophosphate active ingredients and a juvenile hormone analogue (Inesfly 5A IGR) on the mortality of T. infestans. Studies took place in rural houses of the Bolivian Chaco that were treated up to 34 months before and evaluated the susceptibility to pyrethroids of the offspring of field collected insects. Thirty houses were randomly selected within three communities to carry out wall bio-assays with T. infestans nymphs. Mortality was recorded 24, 48 and 72 h after wall contact. Eggs laid by females collected in the area were used to obtain first-instar nymphs and carry out pyrethroid susceptibility tests. The wall bio-assays showed that the micro-encapsulated insecticide eliminates T. infestans populations and produces detectable mortality of insects exposed to walls treated 34 months prior to the tests. The discriminant dose of deltamethrin (0.01 mg/mL) showed 65% nymph survival, whereas at the highest tested dose (1.0 mg/mL) 14% of the nymphs survived. These results show that Inesfly 5A IGR is an appropriate tool for the elimination of intradomestic and peridomestic populations of T. infestans resistant to pyrethroids.Item type: Item , The association between the geographic distribution of Triatoma pseudomaculata and Triatoma wygodzinskyi (Hemiptera: Reduviidae) with environmental variables recorded by remote sensors(Elsevier BV, 2008) Ana Laura Carbajal-de-la-Fuente; Ximena Porcasi; François Noireau; Liléia Diotaiuti; David E. GorlaItem type: Item , Wild populations of Triatoma infestans : Compilation of positive sites and comparison of their ecological niche with domestic population niche(Elsevier BV, 2017) Simone Frédérique Brénière; Rosio Buitrago; Etienne Waleckx; Stéphanie Depickère; Victor Sosa; Christian Barnabé; David E. Gorla