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Embryological development of the cercarial tegument of Paramphistomum epiclitum in the planorbid snail, Indoplanorbis exustus

Published online by Cambridge University Press:  05 June 2009

T. S. Dunn ,
P. H. Dang ,
R. E. B. Hanna  and
W. A. Nizami
P. H. Dang
Affiliation:
Zoology Department, University of Oklahoma, 730 Van Vleet Oval, Norman, Oklahoma 73012, USA
R. E. B. Hanna
Affiliation:
School of Biological Sciences, The Queen's University of Belfast, Belfast BT7 INN, Northern Ireland, UK
W. A. Nizami
Affiliation:
Zoology Department, Aligarh Muslim University, Aligarh 202 001, India
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Abstract

Cercariae develop from individual germinal cells occurring freely within the posterior body cavity of rediae. Individual germinal cells give rise to a germinal ball which becomes enveloped by increasing numbers of cytoplasmic extensions originating from specialized parenchyma-like cells, termed nursc cells. Up to eight cytoplasmic layers of nurse cells invest larger germinal balls. These layers may provide mechanical support for developing embryos and/or play a role in the provision of nutrients to them. The cercarial tegument develops from superficially located somatic cells in the germinal ball. Cytoplasmic extensions of presumptive tegumental cells fuse laterally to form a syncytial layer beneath the encapsulating nurse cell layers. As the cercarial tegument differentiates further, the cytoplasm of the nurse cell layers becomes vacuolated and ultimately these layers degenerate. The surface tegumental syncytia of intra-redial cercariae and newly released extra-redial cercariae are nucleated. Separate subtegumental perikarya develop with further differentiation of extra-redial cercariae.

Keywords

Paramphistomum epiclitumrediacercariadevelopmenttegumentultrastructureTrematodaDigenea
Type
Research Article
Information
Journal of Helminthology , Volume 66 , Issue 4 , December 1992 , pp. 243 - 254
Copyright
Copyright © Cambridge University Press 1992

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References

REFERENCES

Al-Salman, H. A. & James, B. L. (1988) Ultrastructure of the tegument in daughter sporocyst and cercarial embryos of Meiogymnophallus minutus (Digenea: Gymnophallidae). Inernational Journal for Parasitology, 18, 231–242.CrossRefGoogle Scholar
Al-Salman, H. A. & James, B. L. (1989) Ultrastructural studies on the daughter sporocysts of Meiogymnophallus minutus (Digenea: Gymnophallidae). International Journal for Parasitology, 19, 499–508.CrossRefGoogle Scholar
Basch, P. F. & Diconza, J. J. (1974) The miracidium-sporocyst transition in Schistosoma mansoni: surface changes in vitro with ultrastructural correlation. Journal of Parasitology, 60, 935–941.CrossRefGoogle ScholarPubMed
Belton, J. C. & Belton, C. M. (1971) Freeze-etch and cytochemical studies of the integument of larval Acanthatrium oregonense (Trematoda). Journal of Parasitology, 57, 252–260.CrossRefGoogle Scholar
Bils, R. F. & Martin, W. E. (1966) Fine structure and development of the trematode integument. Transactions of the American Microscopical Society, 85, 78–88.CrossRefGoogle ScholarPubMed
Cheng, T. C. & Bier, J. W. (1972) Studies on molluscan schistosomiasis; an analysis of the development of the cercaria of Schistosoma mansoni. Parasitology, 64, 129–141.CrossRefGoogle ScholarPubMed
Dixon, K. E. & Mercer, E. H. (1967) The formation of the cyst wall of the metacercaria of Fasciola hepatica L. Zeitschrift für Zellforschung, 77, 345–360.CrossRefGoogle ScholarPubMed
Dubois, G. (1929) Les cercaires de Ia région de Neuchétel. Bullétin du Societé de Neuchétel des Sciences Naturelles, 53, 3–177.Google Scholar
Dunn, T. S. & Yoshino, T. P. (1988) Schistosoma mansoni: the origin and expression of a tegumental surface antigen on the miracidium and primary sporocyst. Experimental Parasitology, 67, 167–181.CrossRefGoogle ScholarPubMed
Dunn, T. S., Dang, F. H., Mattison, G., Hanna, R. E. B. & Nizami, W. A. (1992) Ultrastructural observations on the redial tegument of Paramphistomum epiclitum from the planorbid snail, Indoplanorbis exustus. Journal of Helminthology, 66, 167–176.CrossRefGoogle ScholarPubMed
Eduardo, S. L. (1982) The taxonomy of the family Paramphistomidae Fischoeder, 1901 with special reference to the morphology of species occurring in ruminants. Revision of the genus Paramphislomum Fischoeder, 1901. Systematic Parasitology, 4, 189–238.CrossRefGoogle Scholar
Erasmus, D. A. (1972) The Biology of Trematodes. Edward Arnold: London.Google Scholar
Gobel, E. & Pan, J. P. (1985) Ultrastructure of the daughter sporocyst and developing cercaria of Schistosoma japonicum in experimentally infected snails, Oncomelania hupensis hupensis. Zeitschrift für Parasitenkunde, 71, 227–240.CrossRefGoogle ScholarPubMed
Hockley, D. J. (1972) Schistosoma mansoni: the development of the cercarial tegument. Parasitology, 64, 245–252.CrossRefGoogle ScholarPubMed
James, B. L. (1973) Ultrastructural and histochemical studies on larval Digenea from marine molluscs. Unpublished Ph.D. thesis, University College of Wales, Swansea.Google Scholar
James, B. L., & Bowers, E. A. (1967) Reproduction in the daughter sporocyst of Cercaria bucephalopis haimeana Lacaze-Duthiers, 1854 (Bucephalidae) and Cercaria dichotoma LeBour, 1911 (non Müller) (Gymnophallidae). Parasitology, 57, 607–625.CrossRefGoogle ScholarPubMed
James, B. L., Bowers, E. A. & Richards, J. G. (1966) The ultrastructure of the daughter sporocyst of Cercaria bucephalopsis haimeana Lacaze-Duthiers, 1854 (Digenea: Bucephalidae) from the edible cockle, Cardium edule L. Parasitology, 57, 753–762.CrossRefGoogle Scholar
Johnston, B. R. (1983) Studies on the biology and host-parasite relationships of Bucephaloides gracilescens (Trematoda: Bucephalidae) and its molluscan hosts. Ph.D. thesis, The Queen's University of Belfast, Northern Ireland.Google Scholar
Køie, M. & Frandsen, F. (1976) Stereoscan observations of the miracidium and early sporocyst of Schistosoma mansoni. Zeitschrift für Parasitenkunde, 50, 335–344.CrossRefGoogle ScholarPubMed
Køie, M., Christensen, N. ø. & Nansen, P. (1976) Stereoscan studies of eggs. free-swimming and penetrating miracidia and early sporocysts of Fasciola hepatica. Zeitschrift für Parasitenkunde, 51, 70–90.CrossRefGoogle ScholarPubMed
Kuntz, R. E. & Chandler, A. C. (1956) Studies of Egyptian trematodes with special reference to the heterophyids of mammals. II. Embryonic development of Heterophyes aequalis Looss. Journal of Parasitology, 42, 613–621.CrossRefGoogle Scholar
Laurie, J. S. (1974) Himasthla quissetensis: induced in vitro encystment of cercaria and ultrastructure of the cyst. Experimental Parasitology, 35, 350–362.CrossRefGoogle ScholarPubMed
Matricon-Gondran, M. (1971) Origine et différenciation du tégument d'un trématode digénétique: étude ultrastructurale chez Cercaria pectinata (larve de Bacciger bacciger, Fellodistomatidés). Zeitschrift für Zellforschung, 120, 488–524.CrossRefGoogle Scholar
Meuleman, E. A. & Holzmann, P. J. (1975) The development of the primitive epithelium and true tegument in the cercaria of Schistosoma mansoni. Zeitschrifl für Parasitenkunde, 45, 307–318.CrossRefGoogle ScholarPubMed
Meuleman, E. A., Lyaruu, D. M., Khan, M. A., Holzmann, P. J. & Sminia, T. (1978) Ultrastructral changes in the body wall of Schistosoma mansoni during the transformation of the miracidium into the mother sporocyst in the snail host Biomphalaria pfeifferi. Zeitschrift für Parasitenkunde, 56, 227–242.CrossRefGoogle Scholar
Meuleman, E. A., Holzmann, P. J. & Peet, R. C. (1980) The development of daughter sporocysts inside the mother sporocyst of Schistosoma mansoni with special reference to the ultrastructure of the body wall. Zeitschrift für Parasitenkunde, 61, 201–212.CrossRefGoogle Scholar
Pan, C-T. S. (1980) The fine structure of the miracidium of Schistosoma mansoni. Journal of Invertebrate Pathology, 36, 307–372.CrossRefGoogle ScholarPubMed
Reader, T. A. J. (1974) Autoradiographic studies on the uptake of 14C-glucose by Bythynia tentaculata (Mollusca: Gastropoda) and its larval digeneans. Journal of Helminthology, 48, 235–240.CrossRefGoogle Scholar
Rees, G. (1966) Light and electron microscopic studies of the redia of Parorchis acanthus, Nicoll. Parasitology, 56, 589–602.CrossRefGoogle Scholar
Rees, G. (1967) The histochemistry of the cystogenous gland cells and cyst wall of Parorchis acanthus Nicoll, and some details of the morphology of the cercaria. Parasitology, 57, 87–110.CrossRefGoogle Scholar
Rees, G. F. & Day, M. F. (1976) The origin and development of the epidermis and associated structures in the cercaria of Cryptocotyle lingua (Creplin) (Digenea: Heterophyidae) from Littorina littorea L. Proceedings of the Royal Society of London B., 192, 299–321.Google ScholarPubMed
Rifkin, E. (1970) An ultrastructural study of the interaction between the sporocysts and the developing cercariae of Schistosoma mansoni. Journal of Parasitology, 56, 284.Google Scholar
Samuelson, J. C. & Caulfield, J. P. (1985) Role of pleated septate junctions in the epithelium of miracidia of Schistosoma mansoni during transformation of sporocysts in Vitro. Tissue and Cell, 17, 667–682.CrossRefGoogle ScholarPubMed
Southgate, V. R. (1970) Observations on the tegument of the miracidium and on the formation of the tegument of the sporocyst of Fasciola hepatica. Parasitology. 61, 177–190.CrossRefGoogle ScholarPubMed
Threadgold, L. T. (1963) The tegument and associated structures of Fasciola hepatica. Quarterly Journal of Microscopical Science, 104, 505–512.Google Scholar
Threadgold, L. T. (1984) Parasitic Platyhelminths. In: Biology of the Integument, Volume 1, Invertebrates, (editors, Bereiter-Hahn, J., Matoltsy, A. G. and Richards, K. S.) pp. 132–191, Springer-Verlag, Berlin.CrossRefGoogle Scholar
Wilson, R. A., Pullin, R. & Denison, J. (1971) An investigation of the method of infection by digenetic trematodes: the penetration of the miraciclium of Fasciola hepatica into its snail host Lymnaea truncatula. Parasitology, 63, 491–506.CrossRefGoogle ScholarPubMed
Žďaˇrskaˇ, Z. & Soboleva, T. N. (1985) Electron microscope observations of the sporocyst of Postharmostomum gallinum Witenberg, 1923 (Brachylaimidae). Folia Parasitologica, 32,227–230.Google Scholar