Fig. 7From: Age, sex, and mating status discrimination in the sand fly Lutzomyia longipalpis using near infra-red spectroscopy (NIRS)Spectra of copulated Lutzomyia longipalpis males at different ages (absorbance vs. wavelength) after smoothing and first derivative pre-treatment by Savitzky-Golay filter. a 1, 8, and 15 days old; b < 8 or > 8 days oldBack to article page