Allatostatin-like immunoreactivity in the abdomen of the locust Schistocerca gregaria

Cell and Tissue Research
Petra SkiebeHans-Joachim Pflüger

Abstract

A polyclonal antibody against allatostatin 1 (AST-1) of cockroach Diploptera punctata was used to investigate the distribution of AST-like immunoreactivity within the abdomen of the locust, Schistocerca gregaria. In the abdominal ganglia, AST-like immunoreactivity was found in both cell bodies and neuropile. In ganglia 6 and 7, staining was found in serial homologous cell bodies in anterior dorsolateral and dorsomedial, and posterior ventrolateral and ventromedial locations. In the terminal ganglion, the numerous immunoreactive somata were smaller in size than those in the unfused ganglia. The combination of backfill experiments with immunocytochemistry showed that, in abdominal ganglion 7, one neuron of the ventromedian cell body cluster and two of the ventrolateral cluster innervated the oviduct, which itself was covered with a dense mesh of AST-immunoreactive varicosities. Combining electron microscopy with immunohistochemistry revealed AST-like immunoreactivity in dense-core vesicles located in neurohaemal-like terminals lacking structures normally found in synapses. A mesh of AST-immunoreactive varicosities was also found on the muscles of the spermatheca and the spermathecal duct. In addition, a mesh of strongly stained v...Continue Reading

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Citations

May 11, 2010·Journal of Insect Physiology·Lisa Robertson, Angela B Lange
Dec 9, 2014·General and Comparative Endocrinology·Laura SedraAngela B Lange
Apr 5, 2018·Frontiers in Systems Neuroscience·Bettina StockerHans-Joachim Pflüger
Aug 11, 2007·The Journal of Experimental Biology·Nelson D Cruz-Bermúdez, Eve Marder
Jul 12, 2014·The Journal of Experimental Biology·Lisa RobertsonAngela B Lange

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