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

Published online by Cambridge University Press:  10 July 2009

P.E. Brown  and
M. Anderson
P.E. Brown*
Affiliation:
School of Biological Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
M. Anderson
Affiliation:
School of Biological Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
*
Correspondence: P. E. Brown, School of Biological Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
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Abstract

The 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.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 86 , Issue 4 , August 1996 , pp. 337 - 342
Copyright
Copyright © Cambridge University Press 1996

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