Down-Regulation of the Ultraviolet-Sensitive Visual Pigment of the Cockroach Decreases the Masking Effect in Short-Wavelength Illumination

Light falling onto the eyes of insects carries information not only on the shape and color of surrounding objects, but also the overall illumination level, regulating the daily and seasonal rhythms of physiological functions. Illumination of American cockroaches with bright light during the nocturna...

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Bibliographic Details
Published in:Neuroscience and behavioral physiology 2021-09, Vol.51 (7), p.1002-1007
Main Authors: Novikova, E. S., Severina, I. Yu, Isavnina, I. L., Zhukovskaya, M. I.
Format: Article
Language:English
Subjects:
Behavior
Behavioral Sciences
Biomedical and Life Sciences
Biomedicine
Camcorders
Cameras
Experiments
Freezing
Illumination
Insects
Light emitting diodes
Morphology
Neurobiology
Neurosciences
Photopigments
Photoreceptors
Physiology
RNA-mediated interference
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Summary:Light falling onto the eyes of insects carries information not only on the shape and color of surrounding objects, but also the overall illumination level, regulating the daily and seasonal rhythms of physiological functions. Illumination of American cockroaches with bright light during the nocturnal phase of the daily cycle leads to a masking effect, whose most notable manifestation consists of periods of complete immobility, i.e., freezing. Suppression of the expression of ultraviolet-sensitive visual pigment in cockroaches by RNA interference significantly decreased the masking effect, leading to a reduction in freezing duration. Behavioral changes were small due to a small residual quantity of ultraviolet-sensitive opsin.
ISSN:0097-0549
1573-899X
DOI:10.1007/s11055-021-01158-3