| 1 | Author
| K. Kirschfeld, B. Lutz | Requires cookie* | | Title
| The Spectral Sensitivity of the Ocelli of Calliploora (Diptera)  | | | Abstract
| The spectral sensitivity of the ocelli of C alliphora was determined by means of the electroretino-gram (ER G). Sensitivity is high in the spectral range from 340 to 450 nm ; with still increasing wavelengths it rapidly decreases. Analysis of the shape of the ERG resulting from stimuli of dif ferent wavelengths, as well as experiments with selective chromatic adaptation, indicate that there is mainly one spectral mechanism contributing to the response. | | |
Reference
| (Z. Naturforsch. 32c, 439 [1977]; received March 21 1977) | | |
Published
| 1977 | | |
Keywords
| Insect Ocelli, Spectral Sensitivity, Colour Vision | | |
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| default:Reihe_C/32/ZNC-1977-32c-0439.pdf | | | Identifier
| ZNC-1977-32c-0439 | | | Volume
| 32 | |
3 | Author
| R. C. Hardie, P. Duelli | Requires cookie* | | Title
| Properties of Single Cells in Posterior Lateral Eyes of Jumping Spiders  | | | Abstract
| Properties of single cells in the posterior lateral (PL) eyes of the jum ping spider Plexippus validus are described. Only one spectral class of cells was encountered and the spectra sensitivity was indistinguishable from that measured from the ERG , both peaking at ca. 535 nm. Angular sensi tivity (width of angular sensitivity function at the 50% level) averaged .89° ± .12°, the smallest value being .77°. Absolute sensitivity (reciprocal of the number of quanta of peak wavelength, on axis required to generate a 50% response) averaged 1.43 + 2 .5 X 1 0 -11 q _ 1 ,cm2,s. A ll cells studied were sensitive to the plane of polarised light. The per formance of receptors in the PL eyes is compared with that of receptors in the compound eyes of diurnal insects. It is concluded that the single lens eye system of spiders is in herently superior in design to the insect compound eye. | | |
Reference
| Z. Naturforsch. 33c, 156—158 (1978); received November 8 1977 | | |
Published
| 1978 | | |
Keywords
| Jumping Spiders, Receptors, Spectral Sensitivity, Angular Sensitivity, Absolute Sensitivity | | |
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| default:Reihe_C/33/ZNC-1978-33c-0156_n.pdf | | | Identifier
| ZNC-1978-33c-0156_n | | | Volume
| 33 | |
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