STRUCTURE AND FUNCTION OF INSECT PHOTORECEPTOR
Annual progress rept. 15 Mar 1965-14 Mar 1966
KYUSHU UNIV FUKUOKA (JAPAN) DEPT OF BIOLOGY
Pagination or Media Count:
The connections between the retinula cells of the compound eye and the neural elements in the optic lobe in fleshly Boettcherisca peregrina were observed by electron microscopy. The ommatidium consisted of eight retinula cells six ordinary retinula cells, one central retinula cell and one basal retinula cell. The axons of ordinary retinula cells short fibers terminated at the lamina, whereas two extraordinary retinula cells extended their proximal axons long fibers to the medulla. Five or six short fibers crowded around two axons of monopolar ganglion cells at the lamina, constituting the neurommatidium where they held the repeated synaptic contacts with the monopolar axons. Many spherical invaginations were discovered at the axon membranes of short fiber in the neurommatidium. Such peculiar structures as well as the cytoarchitecture at the lamina were discussed in relation to possible functions.
- Anatomy and Physiology