Behavioral response of Anopheles darlingi to DDT-sprayed house walls in Amazonia.

D. R. Roberts*, W. D. Alecrim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


The behavioral response of Anopheles darlingi females to spraying of house walls with DDT was studied along the Ituxi River in Amazonas, Brazil, using a house sprayed with 2 g DDT per square meter of wall surface and an untreated house serving as a control. It was found that hardly any An. darlingi females entered, exited, or took blood meals inside the treated house after it was sprayed with DDT, and that specimens marked and released inside the house tended to depart immediately. This behavior appears to constitute true repellency rather than contact irritability. Since the typical house in the vicinity of the study site had only two walls, the persistence of malaria in the local area was probably due to home construction practices.

Original languageEnglish
Pages (from-to)210-217
Number of pages8
JournalBulletin of the Pan American Health Organization
Issue number3
StatePublished - 1991
Externally publishedYes


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