Performance of blue- and green-sensitive photoreceptors of the cricket Gryllus bimaculatus
(2014) In Journal of Comparative Physiology A 200. p.209-219- Abstract
- The compound eye of the cricket Gryllus bimaculatus contains a specialized dorsal rim area (DRA) populated by distinct blue-sensitive photoreceptors responsible for perception of polarized light. The rest of the eye is dominated by green-sensitive photoreceptors. Using patch clamp we studied dissociated ommatidia of nocturnal adults and diurnal eight-instar nymphs with the goals (1) of characterizing the biophysical properties of cricket photoreceptors in general and (2) describing the functionally dissimilar blue- and green-sensitive photoreceptors in terms of voltage-gated channel composition and signal coding. Despite different lifestyles, adult and nymph photoreceptors were indistinguishable. No significant circadian changes were... (More)
- The compound eye of the cricket Gryllus bimaculatus contains a specialized dorsal rim area (DRA) populated by distinct blue-sensitive photoreceptors responsible for perception of polarized light. The rest of the eye is dominated by green-sensitive photoreceptors. Using patch clamp we studied dissociated ommatidia of nocturnal adults and diurnal eight-instar nymphs with the goals (1) of characterizing the biophysical properties of cricket photoreceptors in general and (2) describing the functionally dissimilar blue- and green-sensitive photoreceptors in terms of voltage-gated channel composition and signal coding. Despite different lifestyles, adult and nymph photoreceptors were indistinguishable. No significant circadian changes were observed in K(+) currents. In contrast, prominent differences were seen between blue- and green-sensitive photoreceptors. The former were characterized by relatively low absolute sensitivity, high input resistance, slow quantum bumps with long latencies, small light-induced and K(+) currents and low steady-state depolarization. Information rate, a measure of photoreceptor performance calculated from voltage responses to bandwidth-limited white noise-modulated light contrast, was 87 +/- 8 bits s(-)(1) in green-sensitive photoreceptors vs. 59 +/- 14 bits s(-)(1) in blue-sensitive photoreceptors, implying a limited role of DRA in the perception of visual contrasts. In addition, evidence of electrical coupling between photoreceptors is presented. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/5431760
- author
- Frolov, R. V. ; Immonen, Esa-Ville LU and Weckstrom, M.
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Invertebrate/*physiology, Potassium/metabolism, Reaction Time, Spectrum Analysis, Photoreceptor Cells, Photic Stimulation, Patch-Clamp Techniques, Membrane Potentials/physiology, Light, Gryllidae/*anatomy & histology/physiology, Electric Stimulation, Color Perception/*physiology, *Color, Animals, Biophysics
- in
- Journal of Comparative Physiology A
- volume
- 200
- pages
- 209 - 219
- publisher
- Springer
- external identifiers
-
- scopus:84894323699
- pmid:24398538
- ISSN
- 1432-1351
- DOI
- 10.1007/s00359-013-0879-6
- language
- English
- LU publication?
- no
- additional info
- 3
- id
- 7e0e96aa-9fc7-4809-9de7-c7542458a93d (old id 5431760)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/24398538
- date added to LUP
- 2016-04-01 11:10:37
- date last changed
- 2022-01-26 06:01:38
@article{7e0e96aa-9fc7-4809-9de7-c7542458a93d,
abstract = {{The compound eye of the cricket Gryllus bimaculatus contains a specialized dorsal rim area (DRA) populated by distinct blue-sensitive photoreceptors responsible for perception of polarized light. The rest of the eye is dominated by green-sensitive photoreceptors. Using patch clamp we studied dissociated ommatidia of nocturnal adults and diurnal eight-instar nymphs with the goals (1) of characterizing the biophysical properties of cricket photoreceptors in general and (2) describing the functionally dissimilar blue- and green-sensitive photoreceptors in terms of voltage-gated channel composition and signal coding. Despite different lifestyles, adult and nymph photoreceptors were indistinguishable. No significant circadian changes were observed in K(+) currents. In contrast, prominent differences were seen between blue- and green-sensitive photoreceptors. The former were characterized by relatively low absolute sensitivity, high input resistance, slow quantum bumps with long latencies, small light-induced and K(+) currents and low steady-state depolarization. Information rate, a measure of photoreceptor performance calculated from voltage responses to bandwidth-limited white noise-modulated light contrast, was 87 +/- 8 bits s(-)(1) in green-sensitive photoreceptors vs. 59 +/- 14 bits s(-)(1) in blue-sensitive photoreceptors, implying a limited role of DRA in the perception of visual contrasts. In addition, evidence of electrical coupling between photoreceptors is presented.}},
author = {{Frolov, R. V. and Immonen, Esa-Ville and Weckstrom, M.}},
issn = {{1432-1351}},
keywords = {{Invertebrate/*physiology; Potassium/metabolism; Reaction Time; Spectrum Analysis; Photoreceptor Cells; Photic Stimulation; Patch-Clamp Techniques; Membrane Potentials/physiology; Light; Gryllidae/*anatomy & histology/physiology; Electric Stimulation; Color Perception/*physiology; *Color; Animals; Biophysics}},
language = {{eng}},
pages = {{209--219}},
publisher = {{Springer}},
series = {{Journal of Comparative Physiology A}},
title = {{Performance of blue- and green-sensitive photoreceptors of the cricket Gryllus bimaculatus}},
url = {{http://dx.doi.org/10.1007/s00359-013-0879-6}},
doi = {{10.1007/s00359-013-0879-6}},
volume = {{200}},
year = {{2014}},
}