Decreasing proportion of Anopheles darlingi biting outdoors between long-lasting insecticidal net distributions in peri-Iquitos, Amazonian Peru

Malaria Journal
Catharine PrussingJan E Conn

Abstract

In Loreto Department, Peru, a successful 2005-2010 malaria control programme (known as PAMAFRO) included massive distribution of long-lasting insecticidal nets (LLINs). Additional local distribution of LLINs occurred in individual villages, but not between 2012 and 2015. A 2011-2012 study of the primary regional malaria vector Anopheles darlingi detected a trend of increased exophagy compared with pre-PAMAFRO behaviour. For the present study, An. darlingi were collected in three villages in Loreto in 2013-2015 to test two hypotheses: (1) that between LLIN distributions, An. darlingi reverted to pre-intervention biting behaviour; and, (2) that there are separate sub-populations of An. darlingi in Loreto with distinct biting behaviour. In 2013-2015 An. darlingi were collected by human landing catch during the rainy and dry seasons in the villages of Lupuna and Cahuide. The abundance of An. darlingi varied substantially across years, villages and time periods, and there was a twofold decrease in the ratio of exophagic:endophagic An. darlingi over the study period. Unexpectedly, there was evidence of a rainy season population decline in An. darlingi. Plasmodium-infected An. darlingi were detected indoors and outdoors throughout the...Continue Reading

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Citations

Sep 29, 2018·Malaria Journal·Brian P BourkeMaria A M Sallum
May 19, 2019·Parasites & Vectors·Melina CamposPaulo Eduardo Martins Ribolla
Jan 18, 2019·PLoS Neglected Tropical Diseases·Gabriel Carrasco-EscobarDionicia Gamboa
Dec 6, 2018·Memórias do Instituto Oswaldo Cruz·Catharine PrussingJan E Conn
May 8, 2021·Parasites & Vectors·Tatiane M P OliveiraMaria Anice Mureb Sallum

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Methods Mentioned

BETA
PCR
genotyping
PCA

Software Mentioned

PAMAFRO
_ pca ind
R ade4 package
R
distruct
STACKS
STACKS process radtags
R package adegenet
CLUMPP
StrAuto

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