MORPHOLOGY OF LOCUST NEUROSECRETORY-CELLS PROJECTING INTO THE NERVUS-CORPORIS-ALLATI-II OF THE SUBESOPHAGEAL GANGLION

Citation
P. Braunig et al., MORPHOLOGY OF LOCUST NEUROSECRETORY-CELLS PROJECTING INTO THE NERVUS-CORPORIS-ALLATI-II OF THE SUBESOPHAGEAL GANGLION, Microscopy research and technique, 35(3), 1996, pp. 230-241
Citations number
54
Categorie Soggetti
Microscopy,Biology
ISSN journal
1059910X
Volume
35
Issue
3
Year of publication
1996
Pages
230 - 241
Database
ISI
SICI code
1059-910X(1996)35:3<230:MOLNPI>2.0.ZU;2-W
Abstract
The morphology of neurosecretory cells that project from the suboesoph ageal ganglion into the retrocerebral complex via the Nervus corporis allati II (NCA II) was studied in the migratory locust, Locusta migrat oria, using backfilling techniques and intracellular staining. There a re two populations of cells located ventrally in the ganglion: an ante rior group of four larger cells, and a posterior group of up to 22 sma ller cells. Apart from cell body size and position, members of both ce ll groups have almost all features in common. They show long-lasting s oma spikes with large amplitudes typical for arthropod neurosecretory cells. Their dendritic arborisations are found in the same regions of the neuropile. Both types project into the corpora cardiaca and an add itional putative neurohaemal region associated with posterior pharynge al dilator muscles. The axons of the cells bypass the corpora allata, but frequently form putative release sites on the surface of nerve bra nches in the vicinity of these glands. Finally, using double-labelling techniques, both anterior and posterior cells are shown to be identic al with immunoreactive suboesophageal ganglion cells detected in previ ous studies using antisera directed against either bovine pancreatic p olypeptide (BPP) or locustamyotropin II (Lom-MT-II). (C) 1996 Wiley-Li ss, Inc.