Browsing by Autor "Fabricio Cardozo-Alarcon"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • Thumbnail Image
    Item type: Item ,
    Smoke of Capsicum baccatumL. var. baccatum (Solanaceae) repels nymphs of Triatoma infestans(Klug) (Hemiptera: Reduviidae)
    (University of Santiago, 2021) Jhean-Carla Echalar; Romina Cossio‐Rodríguez; David Véliz; Fabricio Cardozo-Alarcón; Hermann M. Niemeyer; Carlos F. Pinto; Fabricio Cardozo-Alarcon; Universidad Mayor Real y Pontificia de San Francisco Xavier de Chuquisaca; Hermann M. Niemeyer; Universidad de Chile
    Control of the Chagas disease vector, Triatoma infestans(Klug) (Hemiptera: Reduviidae) with synthetic pesticides in Bolivia has become increasingly inefficient due to the development of resistance in the insects. In the Chaco region of Bolivia, guaraní populations have approached the problem by fumigating their houses with the smoke of native plants. Through interviews and field work with local guides, the main plant used by the guaraníes was collected and later identified as Capsicum baccatumL. var. baccatum(Solanaceae). In choice bioassays, filter papers exposed to the smoke of the plant repelled nymphs of T. infestans. Activity remained significant after storing the exposed filter papers for 9 days. Chemical analysis of smoke and literature data suggested that capsaicinoids present in the smoke were responsible for the repellent effect. The data presented provide a rationale for the use of C. baccatumvar. baccatumto control the Chagas vector bythe guaraní populations.