+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Spectral effects of the pupil in fly photo receptors

Journal of Comparative Physiology A Sensory Neural & Behavioral Physiology 146(2): 145-152
Spectral effects of the pupil in fly photo receptors
Photoreceptors of flies contain pigment granules which upon illumination of the receptors migrate towards the rhabdomere and act as a longitudinal pupil. Data in the literature concerning the effect of the pupil on the spectral sensitivity are contradictory. Therefore spectral sensitivity of Musca photoreceptors upon light adaptation was reinvestigated. The change in spectral sensitivity of fly photoreceptors upon light adaptation as measured by Hardie (1979) was confirmed. Taking into account waveguide optics this change was explained from absorbance spectra of pupillary granules, measured by microspectrophotometry in squash preparations. Pupil absorbance spectrum determined in vivo was interpreted. The absence of a change in spectral sensitivity upon light adaptation measured by pupillary reflexion is explained by a local triggering of the pupil.

Accession: 006459658

Related references

Spectral effects of the pupil in fly receptors. Journal of comparative physiology A: Sensory neural and behavioral physiology B: Biochemical systemic and environmental physiology46(2): 145-152, 1982

The role of the fly pupil mechanism in regulating the signal to noise ratio of light adapted photo receptors. Neuroscience Letters (SUPPL 15): S20, 1984

The effects of real and bleaching background on the photo pupil response. Investigative Ophthalmology 9(7): 554, 1970

Membrane conductances and spectral sensitivities of pecten irradians photo receptors. Journal of General Physiology 56(3): 392-406, 1970

Photo current and spectral sensitivity of visual receptors of macaca fascicularis. Biophysical Journal 45(2 PART 2): 294A, 1984

Fly photo receptors part 2 spectral and polarized light sensitivity in the drone fly eristalis. Proceedings of the Royal Society of London Series B Biological Sciences 190(1099): 225-238, 1975

The spectral sensitivity of retinal photo receptors conducting the pupillary light reflex in man. Albrecht Von Graefes Archiv fuer Klinische und Experimentelle Ophthalmologie 177(2): 136-151, 1969

Electrical inhibition in the retina of the butterfly papilio aegeus 1. 4 spectral types of photo receptors. Journal of Comparative Physiology A Sensory Neural and Behavioral Physiology 152(2): 169-182, 1983

Polarization and spectral sensitivity of single photo receptors of the domestic cricket acheta domesticus. Neurophysiology 11(5): 358-365, 1979

Polarization and spectral sensitivity of single photo receptors of a house cricket acheta domesticus. Neirofiziologiya 11(5): 483-490, 1979