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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Near-infrared spectroscopy as a complementary age grading and species identification tool for African malaria vectors
Parasites and Vectors, Volume 3, No. 1, Article 49, Year 2010
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Description
Near-infrared spectroscopy (NIRS) was recently applied to age-grade and differentiate laboratory reared Anopheles gambiae sensu strico and Anopheles arabiensis sibling species of Anopheles gambiae sensu lato complex. In this study, we report further on the accuracy of this tool for simultaneously estimating the age class and differentiating the morphologically indistinguishable An. gambiae s.s. and An. arabiensis from semi-field releases and wild populations. Nine different ages (1, 3, 5, 7, 9, 11, 12, 14, 16 d) of An. arabiensis and eight different ages (1, 3, 5, 7, 9, 10, 11, 12 d) of An. gambiae s.s. maintained in 250 × 60 × 40 cm cages within a semi-field large-cage system and 105 wild-caught female An. gambiae s.l., were included in this study. NIRS classified female An. arabiensis and An. gambiae s.s. maintained in semi-field cages as <7 d old or 7 d old with 89% (n = 377) and 78% (n = 327) accuracy, respectively, and differentiated them with 89% (n = 704) accuracy. Wild caught An. gambiae s.l. were identified with 90% accuracy (n = 105) whereas their predicted ages were consistent with the expected mean chronological ages of the physiological age categories determined by dissections. These findings have importance for monitoring control programmes where reduction in the proportion of older mosquitoes that have the ability to transmit malaria is an important outcome. © 2010 Sikulu et al; licensee BioMed Central Ltd.
Authors & Co-Authors
Sikulu-Lord, Maggy T.
Unknown Affiliation
Killeen, Gerry Francis
Unknown Affiliation
Hugo, Leon E.
Unknown Affiliation
Ryan, Peter A.
Unknown Affiliation
Dowell, Kayla M.
Unknown Affiliation
Wirtz, Robert Andrew
Unknown Affiliation
Moore, Sarah Jane
Unknown Affiliation
Dowell, Floyd
Unknown Affiliation
Statistics
Citations: 93
Authors: 8
Affiliations: 7
Identifiers
Doi:
10.1186/1756-3305-3-49
e-ISSN:
17563305
Research Areas
Infectious Diseases
Participants Gender
Female