Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-24T12:46:29.345Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural differences in the egg envelopes of Haemonchus contortus and Trichostrongylus colubriformis (Nematoda: Trichostrongylidae)

Published online by Cambridge University Press:  06 April 2009

P. J. Waller
P. J. Waller
Affiliation:
CSIRO Division of Animal Health, McMaster Laboratory, Private Bag No. 1, P.O., Glebe, Sydney, N.S.W. 2037
Get access Rights & Permissions [Opens in a new window]

Extract

Many studies have been carried out on the structure and chemical composition of trematode and cestode egg envelopes. Among the nematodes, much work has been done on the eggs of ascarids but there have been few studies on the egg envelopes of species in the Superfamily Trichostrongyloidea. Zawadowsky et al. (1929) reported on the biology of five species of this family, namely Trichostrongylus instabilis (T. colubriformis), T. extenuatus (T. axei), T. probolurus, Cooperia pectinata and Ostertagia mentulata. They described the egg envelope as consisting of three or possibly four layers. The physical and chemical properties of these layers were investigated and these workers concluded that the structure of the egg envelope was similar to that of Ascaris. However, the solubility of the inner layer differed from that of Ascaris in dissolving only partially in absolute alcohol and very little in ether.

Type
Research Article
Information
Parasitology , Volume 62 , Issue 1 , February 1971 , pp. 157 - 160
Copyright
Copyright © Cambridge University Press 1971

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

Bird, A. F. (1968). Changes associated with parasitism in nematodes. III. Ultra-structure of the egg shell, larval cuticle and contents of the subventral esophageal glands of Meloidogyne javanica, with some observations on hatching. Journal of Parasitology 54, 475–89.CrossRefGoogle Scholar
Monné, L. & Hönig, G. (1954). On the properties of the egg envelope of various parasitic nematodes. Arkiv för zoologi (Uppsala) 7, 261–72.Google Scholar
Waller, P. J. & Donald, A. D. (1970). The response to desiccation of eggs of Trichostrongylus colubriformis and Haemonchus contortus (Nematoda: Trichostrongylidae). Parasitology 61, 195–204.CrossRefGoogle ScholarPubMed
Zadowsky, M. M., Ivanova, S. A., Vorobieva, E. I. & Strelkova, O. I. (1929). The biology of the Trichostrongylidae, parasitizing in hoofed animals. Trudy Laboratorii éksperimental’ noî biologii Moskovskogo zooparka 5, 43–83.Google Scholar