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The Journal of General Physiology, Vol 49, 289-307, Copyright © 1965 by The Rockefeller University Press

ARTICLE

The Components of the Visual System of a Dragonfly

Philip Ruck 1

1 From the Department of Biology, Tufts University, Medford, Massachusetts, and the Department of Zoology, University of Wisconsin, Madison, Wisconsin.

Dr. Ruck's present address is the Department of Zoology, University of Wisconsin

In this study of the electroretinograms of dragonflies (adults and nymphs) the objectives were to determine the number of classes of photoreceptors present in the visual system and to allocate these to particular morphological regions. There are probably five classes of photoreceptors present with peak sensitivities near 550, 530, 518, 420, and < 380 mµ. The dorsal ocelli contain two classes (518 mµ and < 380 mµ). The ventral (anterior) ommatidia of the adult compound eye contain at least two classes (near 518 mµ and < 380 mµ) and probably a third class (near 550 mµ). The dorsal ommatidia of the adult compound eye contain one class (420 mµ) and possibly another class (< 380 mµ). The compound eye of the nymph contains one class (530 mµ) and possibly another class (420 mµ).

Submitted on May 14, 1965


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J. van Kleef, A. C. James, and G. Stange
A Spatiotemporal White Noise Analysis of Photoreceptor Responses to UV and Green Light in the Dragonfly Median Ocellus
J. Gen. Physiol., October 31, 2005; 126(5): 481 - 497.
[Abstract] [Full Text] [PDF]


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