Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-28T05:21:39.408Z Has data issue: false hasContentIssue false
  • English
  • Français

Oogenesis and egg-shell formation in Aspiculuris tetraptera Schulz (Nematoda: Oxyuroidea)

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 ovary of Aspiculuris tetraptera has a prominent terminal cap cell. This is considered to be part of the ovarian epithelium. Oogonia detach from the short rachis and increase in size from 6 to 60 μm; accumulating hyaline granules, shell granules and glycogen. The hyaline granules persist in the egg cytoplasm after shell formation has been completed and are considered to be lipoprotein yolk. The shell granules contribute to the non-chitin fraction of the chitinous layer. A classification of the cytoplasmic inclusions of the nematode oocyte is proposed. Upon fertilization a vitelline membrane is formed which constitutes the vitelline layer of the egg-shell. The chitinous layer is secreted in the perivitelline space, between the vitelline layer and the egg oolemma. Upon completion of chitinous layer synthesis, the egg cytoplasm contracts away from its inner surface. The material of the lipid layer is secreted at the surface of the egg cytoplasm and adheres to the inner surface of the chitinous layer. During secretion of the chitinous and lipid layers by the egg cytoplasm, the uterine cells secrete the unit membrane-like external uterine layer and the crystalline internal uterine layer. A complex system of interconnecting spaces develops in the internal uterine layer. This system is open to the exterior via breaks in the external uterine layer. There is no direct involvement of the uterine cells in the formation of this structure.

Type
Research Article
Information
Parasitology , Volume 78 , Issue 2 , April 1979 , pp. 131 - 143
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

Anya, A. O. (1964 a). The distribution of lipids and glycogen in some female Oxyurids. Parasitology 54, 555–66.CrossRefGoogle Scholar
Anya, A. O. (1964 b). Studies on the structure of the female reproductive system and egg-shell formation in Aspiculuris tetraptera Schulz (Nematoda: Oxyuroidea). Parasitology 54, 699–719.CrossRefGoogle ScholarPubMed
Anya, A. O. (1966). Studies on the biology of some Oxyurid nematodes. 1. Factors in the development of the eggs of Aspiculuris tetraptera Schulz. Journal of Helminthology 40, 253–60.CrossRefGoogle Scholar
Anya, A. O. (1976). Physiological aspects of reproduction in nematodes. Advances in Parasitology 14, 267–351.CrossRefGoogle ScholarPubMed
Bird, A. F. (1971). The Structure of Nematodes. New York and 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.CrossRefGoogle Scholar
Chitwood, B. G. & Chitwood, M. B. (1950). Introduction to Nematology. Baltimore: Monumental Printing Company.Google Scholar
Christenson, R. O. (1950). Nemic ova. In Introduction to Nematology (ed. B. G., and Chitwood, M. B.). Baltimore: Monumental Printing Company.Google Scholar
Dropkin, V. H. & Acedo, J. (1974). An electron microscope study of glycogen and lipid in female Meloidogyne javanica (root-knot nematode). Journal of Parasitology 60, 1013–21.CrossRefGoogle Scholar
Fairbain, D. (1957). The biochemistry of Ascaris. Experimental Parasitology 6, 491–554.CrossRefGoogle Scholar
Fauré-Fremiet, E. (1913). La formation de la membrane de l'oeuf d'Ascaris megalocephela. Compte Rendu de la Société Biologique de Paris 74, 1183–4.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
Foor, W. E. (1972). Origin and possible utilisation of small dense granules in oocytes of Ascaris suum. Journal of Parasitology 58, 524–38.CrossRefGoogle ScholarPubMed
Grigonis, G. J. & Solomon, G. B. (1976). Capillaria hepatica: fine structure of the egg-shell. Experimental Parasitology 40, 286–97.CrossRefGoogle ScholarPubMed
Hirsch, D., Oppenheim, D. & Klass, M. (1976). Development of the reproductive system of Caenorhabditis elegans. Developmental Biology 49, 200–19.CrossRefGoogle Scholar
Hsu, K. C. (1951). Experimental studies on egg development, hatching and retroinfection in Aspiculuris tetraptera. Journal of Helminthology 25, 131–60.CrossRefGoogle Scholar
Hulínská, O. & Hulínský, D. (1973). Histological and histochemical studies on Enterobius vermicularis. Folia Parasitologica 20, 319–28.Google ScholarPubMed
Jenkins, T. (1975). Oogenesis and egg-shell formation in Trichuris suis. Parasitology 71, xxi.Google Scholar
Kochhar, D. M. (1960). Histochemical studies on oogenesis and fertilization of the nematode Porrocaecum angusticolle (parasite in vultures). Research Bulletin of the Punjab University 11, 207–19.Google Scholar
Lee, C. C. (1975). Dirofilaria immitis: ultrastructural aspects of oocyte development and zygote formation. Experimental Parasitology 37, 449–68.CrossRefGoogle ScholarPubMed
Lee, D. L. & Anya, A. O. (1967). The structure and development of the spermatozoon of Aspiculuris tetraptera (Nematoda). Journal of Cell Science 2, 537–44.CrossRefGoogle ScholarPubMed
Lee, D. L. & Lešťan, P. (1971). Oogenesis and egg-shell formation in Heterakis gallinarum (Nematoda). Journal of Zoology, London 164, 189–96.CrossRefGoogle Scholar
McClure, M. A. & Bird, A. F. (1976). The tylenchid (Nematoda) egg-shell: the formation of the egg-shell in Meloidogyne javanica. Parasitology 72, 29–39.CrossRefGoogle Scholar
McLaren, D. J. (1973). Oogenesis and fertilisation in Dipetalonema vitae (Nematoda: Filaroidea). Parasitology 66, 465–72.CrossRefGoogle Scholar
Monné, L. (1959). On the formation of the egg envelopes and the early development of the lungworms Dictyocaulus viviparus, D. filaria and Metastrongylus elongatus. Arkiv für Zoologi 12, 99–122.Google Scholar
Monné, L. (1962). On the formation of the egg-shells of the Ascaroidea, particularly Toxascaris leonina Linst. Arkiv für Zoologi 15, 277–82.Google Scholar
Musso, R. (1930). Die Genetalröhren von Ascaris lumbricoides und Ascaris megalocephela. Zeitschrift für wissenschaftliche Zoologie 137, 274–363.Google Scholar
Needham, J. (1931). Chemical Embryology. Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Neville, A. C. (1975). Biology of the Arthropod Cuticle. Berlin: Springer-Verlag.CrossRefGoogle Scholar
Prestage, J. J. (1960). The fine structure of the growth region of the ovary in Ascaris lumbricoides var. suum. with special reference to the rachis. Journal of Parasitology 46, 69–78.CrossRefGoogle Scholar
Rogers, W. P. (1962). The Nature of Parasitism. New York and London: Academic Press.Google Scholar
Seurat, L. G. (1920). Histoire Naturelle des Nématodes de la Barbière. Université d'Alger, Publications de la Faculté des Sciences.Google Scholar
Simonov, A. P. & Shigina, N. G. (1972). Electron microscopy of the egg membranes of Ascaridia galli. Trudy Vsesoyuznogo Instituta Gel'mintologii im. K.I Skyrabina 19, 176–86.Google Scholar
Spurr, A. R. (1969). A low viscosity embedding medium for electron microscopy. Journal of Ultrastructural Research 26, 31–43.CrossRefGoogle ScholarPubMed
Swekjowska, G. (1929). Récherches sur la physiologie de la maturation de l'oeuf d'Ascaris. Academie Polonaise des Sciences, Bulletin International Classe des Sciences Mathématiques et Naturelles Series B, pp. 489–519.Google Scholar
Wharton, D. A. (1977). A study on the structure and function of the eggs of some parasitic nematodes. Ph.D. thesis, Bristol UniversityGoogle Scholar
Wharton, D. A. (1979). The structure of the egg-shell of Aspiculuris tetraptera Schulz (Nematoda: Oxyuroidea). Parasitology 78, 145–54.CrossRefGoogle ScholarPubMed
Yuen, P. H. (1971). Electron microscope studies on Aphelencoides blastophthorus (Nematoda) 11. Oogenesis. Nematologica 17, 13–22.CrossRefGoogle Scholar