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Probing insect backscatter cross-section and melanization using kHz optical remote detection system

  • Alem K. Gebru
  • Mikkel Brydegaard
  • Erich Rohwer
  • Pieter Neethling
Publishing year: 2016-01-01
Language: English
Publication/Series: Proceedings of SPIE - The International Society for Optical Engineering
Volume: 9975
Document type: Journal article
Publisher: SPIE

Abstract english

© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.kHz optical remote sensing system is implemented to determine melanization and backscatter cross-section in the near infrared (NIR) and shortwave infrared (SWIR) in situ. It is shown that backscatter cross-section in the SWIR is insensitive to melanization and absolute melanization can be derived from the ratio of backscatter cross-section in two bands (SWIR/NIR). We have shown that insects reflect more strongly in the SWIR as compared to NIR and Visible (VIS) in accordance with previous findings. This is illustrated using three different insects (Snow white moth (spilosoma genus), Fox moth (Macrothylacia) and Leather beetle (Odontotaenius genus)) and it is shown that the reflectance of the Leather beetle in the VIS and NIR is more affected by melanization as compared with snow white moth.


  • Other Engineering and Technologies not elsewhere specified
  • Zoology


  • ISSN: 0277-786X
Mikkel Brygdegaard
E-mail: mikkel [dot] brydegaard [at] forbrf [dot] lth [dot] se

Associate senior lecturer

Combustion Physics

+46 46 222 76 57



Centre for Animal Movement Research
Evolutionary Ecology, Department of Biology
Ecology building S-223 62 Lund Sweden