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Eiectrophysiologicai studies of the spectral sensitivities of cat fleas, Ctenocephalides felis, and oriental rat fleas, Xenopsylla cheopis to monochromatic light L. G. Pickens 1, J. F. CarrolP & A. Farhang Azad 2 lLivestock Insects Laboratory, Agricultural Environmental Quality Institute, Agricultural Research Service, U.S.D.A., Beltsville, MD 20705, and 2University of Maryland School of Medicine, Department of Microbiology and Immunology, Baltimore, MD 21201, USA Accepted: April 27, 1987 Key words: vision, fleas Introduction Although behavioral studies of insect spectral responses to light are very useful as indicators of spectral efficiency, they are often difficult to conduct with a wide variety of narrow-bandwidth stimuli or with small attenuations of irradiances. Such studies are also often difficult to interpret because of environmental effects upon the test insect's behavior and because of possible antagonistic or simultaneous contrast effects of colors presented in a multiple-choice arena (Green, 1984; Green & Cosens, 1983). On the other hand, electrophysiological (ERG) studies of vision enable precise control of a wide range of light bandwidths and intensities and are free from behavioral anomalies induced by the test environment, but only provide information about stimulus perception and tell nothing about the behavioral result of perception. Thus both methods provide
Entomologia Experimentalis Et Applicata – Wiley
Published: Nov 1, 1987
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