scholarly journals Identification of distinct tyraminergic and octopaminergic neurons innervating the central complex of the desert locust,Schistocerca gregaria

2013 ◽  
Vol 521 (9) ◽  
pp. 2025-2041 ◽  
Author(s):  
Uwe Homberg ◽  
Jutta Seyfarth ◽  
Ulrike Binkle ◽  
Maria Monastirioti ◽  
Mark J. Alkema
Keyword(s):  
Schistocerca Gregaria ◽  
Central Complex ◽  
Desert Locust

scholarly journals Evidence for the cholinergic markers ChAT and vAChT in sensory cells of the developing antennal nervous system of the desert locust Schistocerca gregaria

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Erica Ehrhardt ◽  
George Boyan
Keyword(s):  
Nervous System ◽  
Schistocerca Gregaria ◽  
Central Complex ◽  
Sensory Cells ◽  
Desert Locust ◽  
Cholinergic Transmission ◽  
Sensory Axons ◽  
First Instar ◽  
The Brain ◽  
Antennal Nerve

AbstractSensory and motor systems in insects with hemimetabolous development must be ready to mediate adaptive behavior directly on hatching from the egg. For the desert locust S. gregaria, cholinergic transmission from antennal sensillae to olfactory or mechanosensory centers in the brain requires that choline acetyltransferase (ChAT) and the vesicular acetylcholine transporter (vAChT) already be present in sensory cells in the first instar. In this study, we used immunolabeling to demonstrate that ChAT and vAChT are both expressed in sensory cells from identifiable sensilla types in the immature antennal nervous system. We observed ChAT expression in dendrites, neurites and somata of putative basiconic-type sensillae at the first instar stage. We also detected vAChT in the sensory axons of these sensillae in a major antennal nerve tract. We then examined whether evidence for cholinergic transmission is present during embryogenesis. Immunolabeling confirms that vAChT is expressed in somata typical of campaniform sensillae, as well as in small sensory cell clusters typically associated with either a large basiconic or coeloconic sensilla, at 99% of embryogenesis. The vAChT is also expressed in the somata of these sensilla types in multiple antennal regions at 90% of embryogenesis, but not at earlier (70%) embryonic stages. Neuromodulators are known to appear late in embryogenesis in neurons of the locust central complex, and the cholinergic system of the antenna may also only reach maturity shortly before hatching.

NO/cGMP signalling: L-citrulline and cGMP immunostaining in the central complex of the desert locust Schistocerca gregaria

2009 ◽  
Vol 337 (2) ◽  
pp. 327-340 ◽  
Author(s):  
Theresa Siegl ◽  
Joachim Schachtner ◽  
Gay R. Holstein ◽  
Uwe Homberg
Keyword(s):  
Schistocerca Gregaria ◽  
Central Complex ◽  
Desert Locust ◽  
Cgmp Signalling
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