Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-30T15:04:55.389Z Has data issue: false hasContentIssue false
  • English
  • Français

The structure and formation of the egg-shell of Syphacia obvelata Rudolphi (Nematoda: Oxyurida)

Published online by Cambridge University Press:  06 April 2009

D. A. Wharton
D. A. Wharton
Affiliation:
Department of Zoology, University of Bristol, Woodland Road, Bristol
Get access Rights & Permissions [Opens in a new window]

Summary

The egg of Syphacia obvelata is a flattened elipsoid. The egg-shell consists of 5 layers: external uterine layer, internal uterine layer, vitelline layer, chitinous layer and lipid layer. An operculum is present at one pole of the egg. The opercular groove consists of a break in the uterine layers and the modification of the chitinous layer by the deposition of lipoprotein material. On the curved side of the egg the uterine layers are modified to form alternate ridges and depressions. Discrete spaces are present in the internal uterine layer between the ridges. These are open to the exterior via pores in the external uterine layer. The structure of the uterine layers is quite different on the flattened side of the egg. The morphology of the reproductive system and the formation of the egg-shell is described. It is suggested that the complex structure of the uterine layers of oxyurids forms by a self-assembly process.

Type
Research Article
Information
Parasitology , Volume 79 , Issue 1 , August 1979 , pp. 13 - 28
Copyright
Copyright © Cambridge University Press 1979

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Beams, H. W. & Kessel, R. G. (1969). Synthesis and deposition of oocyte envelopes (vitelline membrane, chorion) and the uptake of yolk in the dragonfly (Odonata, Aeschnidae). Journal of Cell Science 4, 241–61.Google Scholar
Bird, A. F. (1971). The Structure of Nematodes. New York, London: Academic Press.Google Scholar
Bird, A. F. & McClure, M. A. (1976). The tylenchid (Nematoda) egg shell: structure, composition and permeability. Parasitology 72, 19–28.Google Scholar
Chan, K. (1952). Life cycle studies on the nematode Syphacia obvelata. American Journal of Hygiene 56, 14–21.Google ScholarPubMed
Chitwood, B. G. (1932). A synopsis of nematodes parasitic in insects of the family Blattidae. Zeitschrift für Parasitenkunde 5, 14–50.CrossRefGoogle Scholar
Christenson, R. O. (1951). Nemic ova. In Introduction to Nematology (ed. Chitwood, B. G. and Chitwood, M. B.). Baltimore: Monumental Printing Company.Google Scholar
Crofton, H. D. (1966). Nematodes. London: Hutchinson University Press.Google Scholar
Dick, T. A. & Wright, K. A. (1973). The ultrastructure of the cuticle of the nematode Syphacia obvelata (Rudolphi, 1802). 1. The body cuticle of larvae, males and females and observations on its development. Canadian Journal of Zoology 51, 187–96.Google Scholar
Foor, W. E. (1967). Ultrastructural aspects of oocyte development and shell formation in Ascaris lumbricoides. Journal of Parasitology 53, 1245–61.CrossRefGoogle ScholarPubMed
Furneaux, P. J. S., James, C. R. & Potter, S. A. (1969). The egg-shell of the house cricket (Acheta domesticus): an electron microscope study. Journal of Cell Science 5, 227–49.Google Scholar
Furneaux, P. J. S. & Mackay, A. C. (1972). Crystalline protein in the chorion of insect egg-shells. Journal of Ultrastructural Research 38, 343–59.CrossRefGoogle ScholarPubMed
Grigonis, G. J. & Solomon, G. B. (1976). Capillaria hepatica: fine structure of the egg-shell. Experimental Parasitology 40, 286–97.CrossRefGoogle ScholarPubMed
Heslop-Harrison, J. (1968). Pollen wall development. Science 161, 230–7.Google Scholar
Heslop-Harrison, J. (1975). The physiology of the pollen grain surface. Proceedings of the Royal Society of London, B 190, 275–99.Google ScholarPubMed
Hinton, H. E. (1969). Respiratory systems of insect egg-shells. Annual Review of Entomology 14, 343–68.CrossRefGoogle ScholarPubMed
Hinton, H. E. (1970). Insect egg-shells. Scientific American 223, 84–91.Google Scholar
Hulínská, D. & Hulínský, V. (1973). Histological and histochemical studies on the egg-shell of Enterobius vermicularis. Folia Parasitologica 20, 319–28.Google Scholar
Inatomi, S. (1957). A study on the structure of the egg-shell of Enterobius vermicularis (Linnaeus, 1758) Leach, 1853, with the electron microscope. Acta Medicinae Okayama 11, 18–22.Google Scholar
Lee, D. L. (1961). Studies on the origin of the sticky coat of the eggs of the nematode Thelastoma bulhõesi. Parasitology 51, 379–84.CrossRefGoogle ScholarPubMed
Lee, D. L. & LešŤan, P. (1971). Oogenesis and egg-shell formation in Heterakis gallinarum. Journal of Zoology 164, 189–96.CrossRefGoogle Scholar
Matthew, G. & Rai, K. S. (1975). Structure and formation of egg membranes in Aedes aegypti (L) (Diptera: Culicidae). International Journal of Insect Morphology and Embryology 4, 369–80.CrossRefGoogle Scholar
Monné, L. & Hönig, G. (1954). On the properties of the egg envelopes of various parasitic nematodes. Arkiv für Zoologi 7, 261–72.Google Scholar
Neville, A. C. (1975). Biology of the Arthropod Cuticle. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Pantin, C. F. A. (1969). Notes on Microscopical Techniques for Zoologists. Cambridge: Cambridge University Press.Google Scholar
Pearse, A. G. E. (1968). Histochemistry: Theoretical and Applied. London: Churchill.Google Scholar
Philpot, F. (1924). Notes on the eggs and early development of some species of Oxyuridae. Journal of Helminthology 2, 239–52.CrossRefGoogle Scholar
Seurat, C. G. (1920). Histoire Naturelle des Nematodes de la Barbière. Université d'Alger, Publications de la Faculté des Sciences.Google Scholar
Smith, D. S., Telfer, W. H. & Neville, A. C. (1971). Fine structure of the chorion of a moth, Hyalophora cercropia. Tissue and Cell 3, 477–98.CrossRefGoogle Scholar
Spurr, A. R. (1969). A low-viscosity epoxy resin embedding medium for electron microscopy. Journal of Ultrastructural Research 26, 31–43.CrossRefGoogle ScholarPubMed
Telfer, W. H. & Smith, D. S. (1970). Aspects of egg formation. In Insect Ultrastructure (ed. Neville, A. C.), pp. 117–34. 5th Symposium of the Royal Entomological Society.Google Scholar
Ubelaker, J. E. & Allison, U. F. (1975). Scanning electron microscopy of the eggs of Ascaris lumbricoides, A. suum, Toxocara canis and T. mystax. Journal of Parasitology 61, 802–7.CrossRefGoogle ScholarPubMed
Van Der Gulden, W. J. I. & Van Aspert-Van Erp, A. J. M. (1976). Syphacia muris: water permeability of eggs and its effect on hatching. Experimental Parasitology 39, 40–4.Google Scholar
Vogel, R. (1925). Zur Kenntnis der Fortpflanzung, Eineifung, Befruchtung und Furchung von Oxyuris obvelata. Zoologische Jahrbücher 42, 243–71.Google Scholar
Wharton, D. A. (1977). A study on the structure and function of the eggs of some parasitic nematodes. Ph.D. thesis, Bristol University.Google Scholar
Wharton, D. A. (1979 a). Oogenesis and egg-shell formation in Aspiculuris tetraptera Schulz (Nematoda: Oxyuroidea). Parasitology 78, 131–43.CrossRefGoogle ScholarPubMed
Wharton, D. A. (1979 b). The structure of the egg-shell of Aspiculuris tetraptera Schulz (Nematoda, Oxyuroidea). Parasitology 78, 145–54.Google Scholar
Wharton, D. A. (1979 c). The structure and formation of the egg-shell of Hammerschmidtiella diesingi Hammerschmidt (Nematoda: Oxyuroidea). Parasitology 79, 1–12.Google Scholar
Wharton, D. A. & Jenkins, T. (1978). Structure and chemistry of the egg-shell of a nematode (Trichuris suis). Tissue and Cell 10, 427–40.CrossRefGoogle ScholarPubMed
Wourms, J. P. (1976). Annual fish oogenesis. 1. Differentiation of the mature oocyte and formation of the primary envelope. Developmental Biology 50, 338–54.CrossRefGoogle Scholar
Wourms, J. P. & Sheldon, H. (1976). Annual fish oogenesis. 11. Formation of the secondary egg envelope. Developmental Biology 50, 355–66.CrossRefGoogle Scholar
Yuen, P. H. (1971). Electron microscope studies on Aphelenchoides blastophthorus (Nematoda). II. Oogenesis. Nematologica 17, 13–22.CrossRefGoogle Scholar