Journal of Helminthology

Research Papers

Chemical nature and mode of stabilization of eggshell/capsule of some cyclophyllidean cestodes

M. Arfina1 and W. A. Nizamia1

a1 Section of Parasitology, Department of Zoology, Aligarh Muslim University, Aligarh – 202001, India

Abstract

The Chemical nature and mode of stabilization of the eggshell/capsule of Moniezia expansa, Avitellinalahorea and Stilesia globipunctata have been investigated using histochemical techniques. In M. expansa Where vitelline glands are present, the eggshell is stabilized by -S-S and -S-H linkages Whereas in A. lahorea and S. globipunctata, the viteline glands are absent and the double membranes, fibrous capsule and paruterine organ contain mainly elastokeratin-type structural protein. The possible role of the vitellaria in the presence or absence of eggshell and its thickness is discussed.

(Accepted August 28 1985)