Spectral sensitivity of visual cells of the compound eye ofBlatta orientalis

1985 ◽  
Vol 17 (1) ◽  
pp. 48-51 ◽  
Author(s):  
G. A. Mazokhin-Porshnyakov ◽  
A. D. Cherkasov
Keyword(s):  
Spectral Sensitivity ◽  
Compound Eye ◽  
Visual Cells

scholarly journals Spectral Sensitivity of Single Visual Cells

Nature ◽  
1961 ◽  
Vol 190 (4776) ◽  
pp. 639-639 ◽  
Author(s):  
H. AUTRUM ◽  
D. BURKHARDT
Keyword(s):  
Spectral Sensitivity ◽  
Visual Cells

Feeding behavior in the nocturnal moth Manduca sexta is mediated mainly by blue receptors, but where are they located in the retina?

1995 ◽  
Vol 198 (9) ◽  
pp. 1909-1917 ◽  
Author(s):  
D Cutler ◽  
R Bennett ◽  
R Stevenson ◽  
R White
Keyword(s):  
Manduca Sexta ◽  
Spectral Sensitivity ◽  
Compound Eye ◽  
Action Spectrum ◽  
Minor Role ◽  
Feeding Response ◽  
Small Areas ◽  
Nectar Feeding ◽  
A Minor ◽  
Two Peaks

The spectral sensitivity of nectar feeding by adults of the tobacco hawkmoth Manduca sexta was measured in free-choice experiments. The action spectrum displayed a narrow peak at 450 nm and a low secondary maximum at 560 nm. Thus, the feeding response is mediated primarily by blue-sensitive receptors containing the Manduca sexta photopigment P450, while green-sensitive receptors containing P520 play a minor role. A minimum at 500 nm separating the two peaks suggests mutual inhibition between green and blue receptors or negative interaction more proximally in the visual system. The action spectrum drops off abruptly at 400 nm, in accordance with an earlier finding that ultraviolet wavelengths, discerned by receptors containing P357, obstruct the feeding response. The spectral sensitivity of the Manduca sexta compound eye, determined by electroretinogram recordings, and earlier visual pigment measurements indicate that approximately 75 % of the receptors are green-sensitive, with the remainder divided between blue- and ultraviolet-sensitive cells. The distribution of receptor types in small areas of the retina was measured by their ultrastructural response to light. Green and ultraviolet receptors were found, but not the blue receptors that dominate the feeding response. Possibly they are concentrated in a particular region of the retina that has not yet been found.

Spectral sensitivity of the compound eye of the cabbage root fly, Delia radicum (Diptera: Anthomyiidae)

1996 ◽  
Vol 86 (4) ◽  
pp. 337-342 ◽  
Author(s):  
P.E. Brown ◽  
M. Anderson
Keyword(s):  
Spectral Sensitivity ◽  
Visual Discrimination ◽  
Host Plants ◽  
Compound Eye ◽  
Delia Radicum ◽  
Secondary Peak ◽  
Peak Response ◽  
Primary Peak ◽  
Cabbage Root Fly

AbstractThe spectral sensitivity of the compound eye of the cabbage root fly, Delia radicum (Linnaeus), was measured using the electroretinogram (ERG) technique, at fifteen selected wavelengths between 340 nm and 670 nm. The form of the ERG was found to be diphasic in nature. A primary peak of spectral sensitivity in the UV (340–350 nm), and a smaller secondary peak in the blue-green region (460–546 nm) were found, together with a shoulder of sensitivity, representing a ‘pseudo-peak’ as reported for other Diptera, in the red region (630 nm). No significant differences were found between the dorsal and ventral regions of the eye. The peak response in the green region (546 nm) agrees well with existing behavioural data on colour attraction and visual discrimination of host plants by the cabbage root fly.

Spectral sensitivity of screening pigment migration in the compound eye ofManduca sexta

1983 ◽  
Vol 153 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Richard H. White ◽  
Mark J. Banister ◽  
Ruth R. Bennett
Keyword(s):  
Spectral Sensitivity ◽  
Compound Eye ◽  
Screening Pigment ◽  
Pigment Migration

scholarly journals The Spectral Sensitivity of Crayfish and Lobster Vision

1961 ◽  
Vol 44 (6) ◽  
pp. 1089-1102 ◽  
Author(s):  
Donald Kennedy ◽  
Merle S. Bruno
Keyword(s):  
Fresh Water ◽  
Spectral Sensitivity ◽  
Light Adaptation ◽  
Compound Eye ◽  
Monochromatic Light ◽  
Sensitivity Function ◽  
Visual Sensitivity ◽  
Long Wavelength ◽  
Cone Pigments ◽  
Sensitivity Data

(1) The spectral sensitivity function for the compound eye of the crayfish has been determined by recording the retinal action potentials elicited by monochromatic stimuli. Its peak lies at approximately 570 mµ. (2) Similar measurements made on lobster eyes yield functions with maxima in the region of 520 to 525 mµ, which agree well with the absorption spectrum of lobster rhodopsin if minor allowances are made for distortion by known screening pigments. (3) The crayfish sensitivity function, since it is unaffected by selective monochromatic light adaptation, must be determined by a single photosensitive pigment. The absorption maximum of this pigment may be inferred with reasonable accuracy from the sensitivity data. (4) The visual pigment of the crayfish thus has its maximum absorption displaced by 50 to 60 mµ towards the red end of the spectrum from that of the lobster and other marine crustacea. This shift parallels that found in both rod and cone pigments between fresh water and marine vertebrates. In the crayfish, however, an altered protein is responsible for the shift and not a new carotenoid chromophore as in the vertebrates. (5) The existence of this situation in a new group of animals (with photoreceptors which have been evolved independently from those of vertebrates) strengthens the view that there may be strong selection for long wavelength visual sensitivity in fresh water.

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