| Title: | "Insecticide-impregnated netting: A surface treatment for killing Lutzomyia longipalpis (Diptera: Psychodidae), the vector of Leishmania infantum" |
| Author(s): | de Araujo Barbosa V; de Souza CF; Pereira A; Gatherer D; Brazil RP; Bray DP; Hamilton JGC; |
| Address: | "Laboratorio Doencas Parasitarias, Instituto Oswaldo Cruz - Fiocruz, Pavilhao Arthur Neiva, Av. Brasil, 21040-360, Rio de Janeiro, RJ, Brazil. Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YG, UK. Natural Resources Institute, University of Greenwich, Medway Campus, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK" |
| Journal Title: | Curr Res Parasitol Vector Borne Dis |
| DOI: | 10.1016/j.crpvbd.2021.100044 |
| ISSN/ISBN: | 2667-114X (Electronic) 2667-114X (Linking) |
| Abstract: | "The sand fly Lutzomyia longipalpis is the main vector of Leishmania infantum in Brazil. Synthetic male-produced sex/aggregation pheromone co-located with micro-encapsulated lambda-cyhalothrin in chicken sheds can significantly reduce canine infection and sand fly densities in a lure-and-kill strategy. In this study, we determined if insecticide-impregnated netting (IN) could replace insecticide residual spraying (IRS). We compared numbers of Lu. longipalpis attracted and killed in experimental and real chicken sheds baited with pheromone and treated with a 1 m(2) area of either insecticide spray or netting. First, we compared both treatments in experimental sheds to control mortality established from light trap captures. We then compared the long-term killing effect of insecticide spray and netting, without renewal, in experimental sheds over a period of 16 weeks. Finally, a longitudinal intervention study in real chicken sheds compared the numbers and proportions of Lu. longipalpis collected and killed before and after application of both treatments. In Experiment 1, a higher proportion of males and females captured in IRS- and IN-treated sheds were dead at 24 h compared to controls (P < 0.05). No difference was found in the proportion of females killed in sheds treated with IN or IRS (P = 0.15). A slightly higher proportion of males were killed by IRS (100%) compared to IN (98.6%; P < 0.05). In Experiment 2, IN- and IRS-treated traps were equally effective at killing females (P = 0.21) and males (P = 0.08). However, IRS killed a significantly higher proportion of females and males after 8 (P < 0.05) and 16 (P < 0.05) weeks. In Experiment 3, there was no significant difference between treatments in the proportion of females killed before (P = 0.88) or after (P = 0.29) or males killed before (P = 0.76) or after (P = 0.73) intervention. Overall, initially the IN was as effective as IRS at killing female and male Lu. longipalpis in both experimental and real chicken sheds. However, the relative lethal effect of the IN deteriorated over time when stored under prevailing environmental conditions" |
| Keywords: | (+/-)-9-methylgermacrene-B Interceptor Leishmania infantum Lutzomyia longipalpis Olyset plus Sex-aggregation pheromone alpha-cypermethrin lambda-cyhalothrin; |
| Notes: | "PubMed-not-MEDLINEde Araujo Barbosa, Vanessa de Souza, Cristian F Pereira, Alisson Gatherer, Derek Brazil, Reginaldo P Bray, Daniel P Hamilton, James G C eng Netherlands 2022/01/11 Curr Res Parasitol Vector Borne Dis. 2021; 1:None. doi: 10.1016/j.crpvbd.2021.100044" |
