Correlation of mosquito wing-beat harmonics to aid in species classification and flight heading assessment

Abstract

Surveying disease vectors is currently excessively laborious for continuous and widespread monitoring. Wing beat modulation spectroscopy gives opportunity for species and sex recognition in electronic traps or mosquito target classification in lidar. We used a polarimetric dual-wavelength-band laboratory system to record kHz modulated backscattered light from insects. The system operates in the near and short-wave infrared at 808 nm and 1550 nm and retrieves both co- and depolarized light. Here we give clues on the harmonic content and covariance of four mosquito species and fruit flies. Further, we interpret the interdependence of harmonic strengths when insects transit the probe volume with random heading direction and provide correlation matrices for coherent and incoherent light. Using the obtained parameters, we demonstrate that species that are difficult to distinguish with microscope can be classified with high accuracy. The results are valuable for understanding wingbeat harmonics in relation to heading and valuable for optimal sensor design for disease vector surveillance.

Keywords

disease vectors; lidar; malaria; Modulation spectroscopy; polarimetry; thin film; wing beat harmonics

Published in

Title: Novel Biophotonics Techniques and Applications V : 26-27 June 2019, Munich, Germany
Publisher: SPIE

Conference

European Conferences on Biomedical Optics, 23 - 27 June 2019, Munich, Germany

SLU Authors

• Ignell, Rickard

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Atom and Molecular Physics and Optics
Zoology

Publication identifier

• DOI: https://doi.org/10.1117/12.2527224
• ISBN: 9781510628434

Permanent link to this page (URI)

https://res.slu.se/id/publ/129907