|
|
Mushroom Body Evolution - Figure 8 |
Click on inline image to retrieve larger version (approx. 260k)
Figure 8: Internal organization of the mushroom bodies are similar across taxa II. A-C. Apis mellifera vertical lobe comparing strata immunoreactive to FMRFamide and Gastrin CCK (A) with layers shown by reduced silver (B), and layers of extrinsic process (C) with immunoreactive strata (D; FMRFamide reactivity). A similar organization is seen in Periplaneta (E-G) and in Drosophila. A cross section of the vertical lobe is shown in E. Immunoreactivity to antiFMRFamide reveals four distinct levels or layers, comparable with the immunoreactive strata seen in honey bees. At one layer (I) pale and dark strata are immunoreactive. At a second (layer III) alternate (dark) laminae are immunoreactive while a third layer (IIIA) is immunonegative. As in honey bees, these immunoreactive subdivisions represent discrete zones of the calyces. The processes of extrinsic cells relate to immunoreactive zones, as they do in honey bees. F. Bodian stained vertical lobe showing pale and dark laminae across which extend branches of extrinsic cells. G. Dendrites of an efferent neuron extending across the vertical lobe. Dendrites are restricted to layer III. Layer IIIA is here shown with the axons of Kenyon cells. Scale bars = 50 µm (A-D) 50 µm in E, F, G.
All contents are copyright © 2000 Evolbrain or their original publication (as noted).
AAxxxxx
Images or text may be used with proper acknowledgement.