Daily changes in the compound eye of a beetle (Macrogyrus)
(i) Graded index lenses in the cornea and the crystalline cone form the optical system in each ommatidium. (ii) By night the crystalline cone has a blunt ellipsoidal proximal end which contributes to the formation of a superposition image across the clear zone. By day the cone is a tapering point that is extended as a light guide through a dense layer of pigment. (iii) The action of extending the cone and moving the pigment towards the clear zone from between the cones occurs as the...[Show more]
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|Source:||Proceedings of the Royal Society B: Biological Sciences|
|01 Horridge G A et al Daily changes in 1983.pdf||4.34 MB||Adobe PDF||Request a copy|
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