Trophospongium-like Structures in an Insect Eye: Response of Retinula Cells of Papilio Xuthus (Lepidoptera) to Irradiation with Ultraviolet Light

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1983 Jan 1

PMID 6871967

Authors

E Eguchi

V B Meyer-Rochow

Affiliations

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Abstract

Presumably, as a consequence of a 3-h exposure to light of 350-nm wavelength (1.5 X 10(15) photons/cm2 sec) followed by a period of 20 h of rest in the dark, the four smaller retinula cells in each ommatidium of the eye of the butterfly Papilio xuthus contain a structure in the peripheral regions of their cytoplasm that resembles a portion of a rhabdom. Evidence for and against the view that this unusual, highly ordered arrangement of membranes represents a trophospongium is presented. In view of the fact that the structure in question only occurred at the same time when rhabdomeres were in a process of disintegration or reformation, the authors conclude that the structure in question is involved in the supply or removal of substances during a period of considerable activity of the retinula cell.

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