Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.

We report on the accuracy of using near-infrared spectroscopy (NIRS) to predict the age of Anopheles mosquitoes reared from wild larvae and a mixed age-wild adult population collected from pit traps after exposure to pyrethroids. The mosquitoes reared from wild larvae were estimated as <7 or ≥7 d...

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Main Authors: Maggy T Sikulu, Silas Majambere, Bakar O Khatib, Abdullah S Ali, Leon E Hugo, Floyd E Dowell
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090657&type=printable
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author Maggy T Sikulu
Silas Majambere
Bakar O Khatib
Abdullah S Ali
Leon E Hugo
Floyd E Dowell
author_facet Maggy T Sikulu
Silas Majambere
Bakar O Khatib
Abdullah S Ali
Leon E Hugo
Floyd E Dowell
author_sort Maggy T Sikulu
collection DOAJ
description We report on the accuracy of using near-infrared spectroscopy (NIRS) to predict the age of Anopheles mosquitoes reared from wild larvae and a mixed age-wild adult population collected from pit traps after exposure to pyrethroids. The mosquitoes reared from wild larvae were estimated as <7 or ≥7 d old with an overall accuracy of 79%. The age categories of Anopheles mosquitoes that were not exposed to the insecticide papers were predicted with 78% accuracy whereas the age categories of resistant, susceptible and mosquitoes exposed to control papers were predicted with 82%, 78% and 79% accuracy, respectively. The ages of 85% of the wild-collected mixed-age Anopheles were predicted by NIRS as ≤8 d for both susceptible and resistant groups. The age structure of wild-collected mosquitoes was not significantly different for the pyrethroid-susceptible and pyrethroid-resistant mosquitoes (P = 0.210). Based on these findings, NIRS chronological age estimation technique for Anopheles mosquitoes may be independent of insecticide exposure and the environmental conditions to which the mosquitoes are exposed.
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spelling doaj-art-fdbcc01290b34fcbbafd98c0ca3cc66d2025-08-20T03:01:14ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-0193e9065710.1371/journal.pone.0090657Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.Maggy T SikuluSilas MajambereBakar O KhatibAbdullah S AliLeon E HugoFloyd E DowellWe report on the accuracy of using near-infrared spectroscopy (NIRS) to predict the age of Anopheles mosquitoes reared from wild larvae and a mixed age-wild adult population collected from pit traps after exposure to pyrethroids. The mosquitoes reared from wild larvae were estimated as <7 or ≥7 d old with an overall accuracy of 79%. The age categories of Anopheles mosquitoes that were not exposed to the insecticide papers were predicted with 78% accuracy whereas the age categories of resistant, susceptible and mosquitoes exposed to control papers were predicted with 82%, 78% and 79% accuracy, respectively. The ages of 85% of the wild-collected mixed-age Anopheles were predicted by NIRS as ≤8 d for both susceptible and resistant groups. The age structure of wild-collected mosquitoes was not significantly different for the pyrethroid-susceptible and pyrethroid-resistant mosquitoes (P = 0.210). Based on these findings, NIRS chronological age estimation technique for Anopheles mosquitoes may be independent of insecticide exposure and the environmental conditions to which the mosquitoes are exposed.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090657&type=printable
spellingShingle Maggy T Sikulu
Silas Majambere
Bakar O Khatib
Abdullah S Ali
Leon E Hugo
Floyd E Dowell
Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
PLoS ONE
title Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
title_full Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
title_fullStr Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
title_full_unstemmed Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
title_short Using a near-infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids.
title_sort using a near infrared spectrometer to estimate the age of anopheles mosquitoes exposed to pyrethroids
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090657&type=printable
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