|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 1. Transmission electron microscopy of an ommatidium of the eye of the yellow
tip Anthocharis scolymus. (A) Transverse section of the proximal part
of the ommatidium, where only the proximal photoreceptors, R5–R8,
contribute rhabdomeres to the fused rhabdom (Rh) (and not the distal
photoreceptors, R1–R4, and the basal receptor, R9). Tracheoles (T) with
their characteristic rippled walls are well recognizable. (B) Transverse
section of the basal part of the ommatidium, where the R9 cell body fully
occupies the space proximal to the rhabdom. (C) Longitudinal section of an
ommatidium near the basal membrane (BM) that limits the retina at the proximal
side. The trachea is clearly not elaborated into a tracheolar tapetum apposed
to the fused rhabdom, as is the case in other pierid butterflies (cf. Ribi,
1980; Qiu et al., 2002). The
levels of the sections of A and B are indicated by the horizontal dotted lines
and the arrowheads. Bar, 5 µm.
|
