Ultrastructure, Solubilization and Protein Composition of Eggshell (Chorion) of Gesonula punctifrons (Stal, 1861) (Orthoptera: Acrididae)
Keywords:
Gesonula punctifons, eggshell, SEM, TEM, SDS-PAGE.Abstract
Developmental changes in ultrastructure and polypeptide composition of chorion of Gesonula punctifrons (Orthoptera: Acrididae) have been studied by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and Sodium Dodecyl Sulfate-Poly Acrylamide Gel Electrophoresis (SDS-PAGE). Along with morphogenesis and maturation of chorion pentagonal and hexagonal architecture and ‘cap’ like structure appeared in the surface of the eggshell. Transmission Electron Microscopic studies revealed presence of protein fiber deposition and their intercalation with polysaccharides. SDS-PAGE studies showed presence of five polypeptide bands in all the developmental stages and suggested possibilities of aggregate formation among different polypeptide components.