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 Red-shift of spectral sensitivity due to screening pigment migration in the eyes of a moth, Adoxophyes orana

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Aya Satoh ◽  
Finlay J. Stewart ◽  
Hisaharu Koshitaka ◽  
Hiroshi D. Akashi ◽  
Primož Pirih ◽  
...  
Keyword(s):  
Spectral Sensitivity ◽  
Red Shift ◽  
Adoxophyes Orana ◽  
Screening Pigment ◽  
Pigment Migration

Reversed Light Reaction of the Screening Pigment in a Compound Eye Induced by Noradrenaline

1987 ◽  
Vol 42 (7-8) ◽  
pp. 973-976 ◽  
Author(s):  
Achim Juse ◽  
Gunnar Höglund ◽  
Kurt Hamdorf
Keyword(s):  
Compound Eye ◽  
Local Application ◽  
Pigment Cells ◽  
Light Stimulation ◽  
Light Reaction ◽  
Transmission Microscopy ◽  
Normal Dispersion ◽  
Screening Pigment ◽  
Pigment Migration ◽  
Deilephila Elpenor

Migration of the screening pigment in the compound eye of the sphingid moth Deilephila elpenor is altered by noradrenaline, as shown by microreflectometric measurements on eyes of intact moths and by transmission microscopy on preparations consisting of the screening pigment cells and dioptric structures. Local application of noradrenaline inverts the reaction of the pigment to light stimulation; light causes a contraction of the pigment instead of the normal dispersion. It is suggested that catecholamines are involved in the normal regulation of pigment migration.

Spectral sensitivity of retinal screening pigment migration in the frog

1969 ◽  
Vol 9 (3) ◽  
pp. 377-IN8 ◽  
Author(s):  
P.A. Liebman ◽  
S. Carroll ◽  
A. Laties
Keyword(s):  
Spectral Sensitivity ◽  
Screening Pigment ◽  
Retinal Screening ◽  
Pigment Migration

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.

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