Studies on the neurosecretory system and retrocerebral endocrine glands of Nezara viridula Linn. (Heteroptera: Pentatomidae)

Abstract

The neurosecretory system and retrocerebral endocrine glands of Nezara viridula Linn. have been described on the basis of in situ preparations and histological sections employing the paraldehyde fuchsin (PF) and performic acid-victoria blue (PAVB) techniques.In the brain of N. viridula, there are two medial groups -each consisting of five neurosecretory cells which belong to A-type. The lateral neurosecretory cells are absent. The axons of the two groups of medial neurosecretory cells (MNC) compose the two bundles of neurosecretory pathways (NSP) that decussate in the anterodorsal part of the protocerebrum. The two pathways, after the cross-over, run deep into the protocerebrum and deutocerebrum and emerge as NCC-I from the tritocerebrum. The nervi corporis cardiaci-I (NCC

Hypertrehalosaemic activity in corpus cardiacum‐corpus allatum‐aorta complex and adipokinetic response of Glossina morsitans

“…Neurosecretory granules in the glandular cells of the CC have been reported in a number of insects (Norman, 1965;Unnithan et al, 1971; Awasthi, 1972). These granules are known to contain neurohormones, some of which control metabolic and reproductive processes (Raabe, 1982).…”