title: Effect of insecticide (BHC) on brain neurosecretory cells of Poekilocerus pictus (Acrididae).
abstract: Neurosecretory cells in the adult males and females of Poekilocerus pictus were studied. They were found in forebrain and hand brain regions in the form of small patches. The median group of pars intercerebralis is however a big patch of about 100...110 cells. The brain neurosecretory cells of Poekilocerus pictus could be differentiated into two types on the basis of their staining reaction i.e. A and B types. The A type cells are restricted to only the median group whereas the other groups have only the B type cells. Effect of 0.01% BHC (LD 50 dose), an organic insecticide was studied. Four incubation periods viz. 1 h, 3 1/2 h, 6 h and 24 hours were tried. the insecticide acted as inducer to the triggering mechanism of enhanced secretory activity and with prolonged incubation a complete exhaustion of secretory material accompanied with lot of disruptions and disturbances to the compactness of the neurosecretory cell wall occurred.
mesh_terms: D000818:Animals; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005260:Female; D001556:Hexachlorocyclohexane / Q000494:pharmacology*; D007306:Insecticides / Q000494:pharmacology*; D008297:Male; D009489:Neurosecretion / Q000187:drug effects; D009490:Neurosecretory Systems / Q000166:cytology / Q000187:drug effects; D009987:Orthoptera / Q000166:cytology / Q000187:drug effects*
chemical_list: D007306:Insecticides; D001556:Hexachlorocyclohexane