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Title: | Pintomyia evansi (Diptera: Psychodidae) larvae susceptibility to hydrated lime under laboratory conditions | Authors: | Ortega, Edgar Estrada, Luis Gregorio Bejarano, Eduar Elías Cadena, Horacio |
Keywords: | Control;Hidróxido de Calcio;Leishmaniasis;Larva;Control de Vectores de las Enfermedades | Issue Date: | Aug-2022 | Journal: | Acta tropica | Series/Report no.: | Acta Trop;2022(232):106505 | Abstract: | This study evaluated the effect of Calcium hydroxide (Ca(OH)2 Mg(OH)2) on third stages Pi. evansi larvae mortality under experimental laboratory conditions. Three treatments containing a mixture of phlebotomine natural breeding soil (substrate) and Calcium hydroxide at different concentrations were used: Treatment 1 (T1), 1 kg of substrate mixed with 56.2 g of lime; Treatment 2 (T2), 1 kg of substrate mixed with 62.5 g of lime; and Treatment 3 (T3), 1 kg of substrate mixed with 70 g of lime. in addition, a sample of substrate without lime was used as a control for each treatment. The mortality in T1 was 1% at 24 h and 12% at 48 h, reaching a maximum of 56% at 72 h of exposure. For T2, mortality was progressive, starting with 12% at 12 h, 36% at 24 h, 52% at 48 h, and 100% at 72 h; while T3 showed mortality percentages of 94% and 100% between 12 and 24 h of exposure. Therefore, T3 was the most effective to according to the Kaplan-Meier survival analysis. This study showed that treatments over 62 g of Calcium hydroxide per 1 kg of substrate offer a starting point for immature stage control under laboratory conditions. With these results, we propose to evaluate the cost-effectiveness and feasibility of the application, of the latter concentration, under field conditions in urban environments for its application in vector control programs. |
Description: | Fil: Ortega, Edgar. Investigaciones Biomédicas, Universidad de Sucre; Colombia Fil: Estrada, Luis Gregorio. Instituto Nacional de Medicina Tropical, ANLIS-Malbrán, Ministerio de Salud de la Nación. Almafuerte y Ámbar s/n; Argentina Fil: Bejarano, Eduar Elías. Investigaciones Biomédicas, Universidad de Sucre; Colombia Fil: Cadena, Horacio. Programa de Estudio y Control de Enfermedades Tropicales - PECET, Universidad de Antioquia; Colombia |
URI: | http://sgc.anlis.gob.ar/handle/123456789/2580 | DOI: | 10.1016/j.actatropica.2022.106505 |
Appears in Collections: | Artículos |
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