A morphological and histochemical study of egg formation in a cyclophyllidean cestode
- 1 June 1957
- journal article
- research article
- Published by Cambridge University Press (CUP) in Parasitology
- Vol. 47 (1-2), 21-29
- https://doi.org/10.1017/s0031182000021715
Abstract
1. The morphology and histochemistry of the genitalia concerned in the formation of the egg in Multiceps smyihi n.sp. are described.2. The vitelline cells are devoid of the phenolic protein globules, which occur in the vitelline cells of the Pseudophyllidea; this result is correlated with the absence of a true external egg-shell.3. The hardened embryophore (often mistakenly termed the egg-shell) gives none of the reactions of sclerotin (tanned protein) or chitin, but gives a strong P.F.A.S. reaction for disulphide bonds, suggesting that it is a ‘keratin’ type of protein.4. The cells of Mehlis' gland secrete a material which is intensely P.A.S.-positive and is not digested by saliva, α-amylase or hyaluronidase. This suggests that it may be secreting a mucopolysaccharide or muco- or glycoprotein.Keywords
This publication has 14 references indexed in Scilit:
- Studies on tapeworm physiology. IX: A histochemical study of egg-shell formation in Schistocephalus solidus (pseudophyllidea)Experimental Parasitology, 1956
- Shell gland and egg-shell formation in Fasciola hepatica L.Parasitology, 1953
- Some Structural Proteins of Mytilus EdulisJournal of Cell Science, 1952
- Keratins in InvertebratesNature, 1950
- Quinone Tanning in the Cocoon-Shell of Dendroœlum lacteumNature, 1950
- Physiological and histochemical observations on the adult liver fluke, Fasciola hepatica L. III. Egg-shell formationParasitology, 1947
- Histochemical Tests for Proteins and Amino Acids; The Characterization of Basic ProteinsStain Technology, 1946
- On the hardening of the ootheca ofBlatta orientalisProceedings of the Royal Society of London. B. Biological Sciences, 1940
- Ricerche istochimiche sui granuli vitellini dei policladiBolletino di zoologia, 1934
- Ricerche istochimiche sui vitellogeni dei platelmintiBolletino di zoologia, 1933