1. Dedicated photoreceptor pathways in Drosophila larvae mediate navigation by processing either spatial or temporal cues
- Author
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Simon G. Sprecher, Marc Gershow, Aravinthan D. T. Samuel, Tim Henning Humberg, James W Truman, Pascal Bruegger, Bruno Afonso, Marta Zlatic, Humberg, Tim-Henning [0000-0002-2824-2453], Gershow, Marc [0000-0001-7528-6101], Sprecher, Simon G [0000-0001-9060-3750], and Apollo - University of Cambridge Repository
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0301 basic medicine ,Rhodopsin ,Time Factors ,animal structures ,Light ,genetic structures ,Computer science ,Science ,General Physics and Astronomy ,Motor program ,Sensory system ,Spatial memory ,Article ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,Phototaxis ,Animals ,Drosophila Proteins ,lcsh:Science ,Sensory cue ,Vision, Ocular ,Probability ,Multidisciplinary ,Behavior, Animal ,Lasers ,fungi ,Gene Expression Regulation, Developmental ,General Chemistry ,eye diseases ,Light intensity ,030104 developmental biology ,Temporal resolution ,Larva ,Drosophila ,Photoreceptor Cells, Invertebrate ,lcsh:Q ,sense organs ,Cues ,Neuroscience ,030217 neurology & neurosurgery ,Drosophila Protein ,Spatial Navigation - Abstract
To integrate changing environmental cues with high spatial and temporal resolution is critical for animals to orient themselves. Drosophila larvae show an effective motor program to navigate away from light sources. How the larval visual circuit processes light stimuli to control navigational decision remains unknown. The larval visual system is composed of two sensory input channels, Rhodopsin5 (Rh5) and Rhodopsin6 (Rh6) expressing photoreceptors (PRs). We here characterize how spatial and temporal information are used to control navigation. Rh6-PRs are required to perceive temporal changes of light intensity during head casts, while Rh5-PRs are required to control behaviors that allow navigation in response to spatial cues. We characterize how distinct behaviors are modulated and identify parallel acting and converging features of the visual circuit. Functional features of the larval visual circuit highlight the principle of how early in a sensory circuit distinct behaviors may be computed by partly overlapping sensory pathways., The response of Drosophila larva to light depends on both spatial and temporal inputs. Here the authors show that Rhodopsin5 photoreceptors, but not Rhodopsin6 photoreceptors, are required for conveying spatial light cues.
- Published
- 2018
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