Function of rhodopsin in temperature discrimination in Drosophila. A switch in thermal preference in Drosophila larvae depends on multiple rhodopsins. The Pyrexia transient receptor potential channel mediates circadian clock synchronization to low temperature cycles in Drosophila melanogaster. Loss of Drosophila melanogaster TRPA1 function affects “siesta” behavior but not synchronization to temperature cycles. Drosophila circadian rhythms in seminatural environments: Summer afternoon component is not an artifact and requires TrpA1 channels. Color discrimination with broadband photoreceptors. Schnaitmann, C., Garbers, C., Wachtler, T. ![]() The role of retinula cell types in visual behavior of Drosophila melanogaster. Drosophila TRP channels and animal behavior. Pokes, sunburn, and hot sauce: Drosophila as an emerging model for the biology of nociception. Proprioceptive opsin functions in Drosophila larval locomotion. Light-avoidance-mediating photoreceptors tile the Drosophila larval body wall. Rhodopsin 7-the unusual rhodopsin in Drosophila. Drosophila melanogaster rhodopsin Rh7 is a UV-to-visible light sensor with an extraordinarily broad absorption spectrum. A rhodopsin in the brain functions in circadian photoentrainment in Drosophila. A new rhodopsin influences light-dependent daily activity patterns of fruit flies. Blue light induces a neuroprotective gene expression program in Drosophila photoreceptors. Hall, H., Ma, J., Shekhar, S., Leon-Salas, W. Lethal effects of short-wavelength visible light on insects. Two clocks in the brain: an update of the morning and evening oscillator model in Drosophila. Parallel neural pathways in higher visual centers of the Drosophila brain that mediate wavelength-specific behavior. Evidence for colour vision in Drosophila melanogaster through spontaneous phototactic choice behaviour. The neural substrate of spectral preference in Drosophila. Contribution of photoreceptor subtypes to spectral wavelength preference in Drosophila. ![]() Simultaneous and successive colour contrast expressed in ‘slow’ phototactic behaviour of walking Drosophila melanogaster. ![]() A review of the evolution of animal colour vision and visual communication signals. Ecological importance of trichromatic vision to primates. Our findings show that several TRP channels are involved in colour-driven behaviour in Drosophila, and reveal distinct pathways of innate colour preference that coordinate the behavioural dynamics of flies in ambient light.ĭominy, N. By contrast, avoidance of blue light is primarily mediated by multidendritic neurons, requires rhodopsin 7 and the TRP channel Painless, and is independent of the clock. The midday reduction in green preference in favour of dim light depends on the transient receptor potential (TRP) channels dTRPA1 and Pyrexia, and is also timed by the clock. Genetic manipulations reveal that the peaks in green preference require rhodopsin-based visual photoreceptors and are controlled by the circadian clock. Flies show a strong preference for green in the early morning and late afternoon, a reduced green preference at midday and a robust avoidance of blue throughout the day. Here we show that, when given a choice among blue, green and dim light, fruit flies exhibit an unexpectedly complex pattern of colour preference that changes according to the time of day. Data on innate colour preference in mammals remain controversial 3 and there are limited data for simpler organisms 4, 5, 6, 7. Such colour-dependent behaviour can be learned or innate. Light discrimination according to colour can confer survival advantages by guiding animals towards food and shelter and away from potentially harmful situations 1, 2.
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