Abstract
Mosquitos, sometimes carrying deadly diseases such as malaria, zika, and dengue fever, cause much concern. To control mosquitos, it is important to effectively monitor their presence and behavioral trends. We have constructed two optical sensing systems for insects based on light attenuation and light backscattering, respectively. The systems, which were tested with the potentially dangerous Aedes albopictus and Culex pipiens, were able to extract the wing-beat frequency, when they passed impinging light, derived from light-emitting diodes. We could achieve distinction between the sexes of A. albopictus and C. pipiens based on the wing-beat frequency. Finally, we propose a statistical method suitable for the system to improve the accuracy of counting.
Highlights
Mosquitoes are the most dangerous animals in the world
We found that there is still considerable overlap in the range of wing-beat frequencies of A. albopictus and C. pipiens of the same sex, which makes it difficult to use the data as a basis for differentiation
The recording systems are based on light scattering or light shadowing, respectively, and exhibited similar performance in test experiments with Aedes albopictus
Summary
It is well known that about 200 million people will be infected with malaria every year and kill at least 500,000 people following bites from female Anopheles mosquitos [1,2,3]. These amazing numbers are increasingly catching worldwide attention. Images of insects are recorded at different angles by a camera followed by identification based on the characteristics features [7,8,9] This method requires a high acquisition speed of the camera to quickly acquire insect images in flight, and requires sufficient contrast of the background [10, 11]. This method is not suitable for a wide range of monitoring, and obtains a large number of useless images which increases the difficulty of analysis
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