Dk. Nanda et U. Pal, HISTOCHEMICAL-STUDIES OF ECDYSIAL GLANDS IN MATURE NYMPHS OF ROACHES PERIPLANETA-AMERICANA LINN. (DICTYOPTERA), Acta Biologica Cracoviensia. Series Zoologia, 33, 1992, pp. 39
Histochemical features of the ecdysial glands (EGs) of mature nymphs o
f P. americana has been probed. This study is made to characterise the
presence of biochemically important constituents in the glandular com
ponents of the gland. Localization of lipids, glycogen and acid phosph
atase is notewrorthy despite the presence of general proteins, nucleic
acids and alkaline phosphatase. Functional implication of these macro
molecules has been discussed in the light of steroid hormone (ecdysone
) production from these transitory non-neural endocrine glands in cour
se of metamorphosis.