Comparison of insecticidal paint and deltamethrin against Triatoma infestans (Hemiptera: Reduviidae) feeding and mortality in simulated natural conditions

作者：Maloney Kathleen M; Ancca Juarez Jenny; Salazar Renzo; Borrini Mayori Katty; Niemierko Malwina; Yukich Joshua O; Naquira Cesar; Keating Joseph A; Levy Michael Z^*

来源：JOURNAL OF VECTOR ECOLOGY, 2013, 38(1): 6-11.

DOI：10.1111/j.1948-7134.2013.12003.x

• Inesfly 5A IGR (TM)
• deltamethin
• Chagas disease
• blood meal

The vector of Chagas disease, Triatoma infestans, is largely controlled by the household application of pyrethroid insecticides. Because effective, large-scale insecticide application is costly and necessitates numerous trained personnel, alternative control techniques are badly needed. We compared the residual effect of organophosphate-based insecticidal paint (Inesfly 5A IGR (I5A)) to standard deltamethrin, and a negative control, against T. infestans in a simulated natural environment. We evaluated mortality, knockdown, and ability to take a blood meal among 5th instar nymphs. I5A paint caused significantly greater mortality at time points up to nine months compared to deltamethrin (Fisher%26apos;s Exact Test, p %26lt; 0.01 in all instances). A year following application, mortality among nymphs in the I5A was similar to those in the deltamethrin (2 = 0.76, df=1, p %26lt; 0.76). At months 0 and 1 after application, fewer nymphs exposed to deltamethrin took a blood meal compared to insects exposed to paint (Fisher%26apos;s Exact Tests, p %26lt; 0.01 and p %26lt; 0.01, respectively). Insecticidal paint may provide an easily-applied means of protection against vectors of Chagas disease.

• 出版日期2013-6