Zeitschrift für Parasitenkunde

, Volume 64, Issue 2, pp 149–155 | Cite as

ExperimentalAncylostoma tubaeforme infection of cats: Changes in blood values and worm burden in relation to single infections of varying size

  • C. O. E. Onwuliri
  • A. B. C. Nwosu
  • A. O. Anya
Original Investigations

Abstract

Worm-free cats about 12 weeks old were infected with 100, 500, 1,000, and 2,000 third-stage larvae (L3) ofAncylostoma tubaeforme. The changes in packed cell volume (PCV) and haemoglobin content were monitored, and the worm populations developing in each infection recorded. Cats receiving infection doses of 1,000 L3 and above showed morbidity symptoms by the third week and a rapid decline especially in the PCV value. The low dose rates (500 L3 and below) produced an apparently symptomless condition without pronounced changes in the blood values. Adult hookworm populations were linearly related to the logarithm of the dose of infective larvae administered, but there was a lower female to male ratio (FMR) at high dose levels. No significant size differences were observed in the adult hookworm populations.

Key words

Ancylostoma tubaeforme Hookworm Pathophysiology 

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References

  1. Allen AVH, Ridley DS (1970) Further observations on the formol-ether concentration technique for faecal parasites. Clin Pathol 43:545Google Scholar
  2. Anosa VO (1977) Haematological observations on helminthiasis caused byHaemonchus contortus in Nigerian dwarf sheep. Trop Anim Health Prod 9:11–17PubMedGoogle Scholar
  3. Anya AO, Umezurike GM The pathways of energy metabolism of the feline hookwormAncylostoma tubaeforme (in communication).Google Scholar
  4. Beaver PC, Yoshida Y, Ash LR (1964) Mating ofAncylostoma caninum in relation to blood loss in the host. J Parasitol 50:286–293PubMedGoogle Scholar
  5. Clark CH, Kling JM, Woodley CH, Sharp N (1961) A quantitative measurement of the blood loss caused by ancylostomiasis in dogs. Am J Vet Res 22:370–373PubMedGoogle Scholar
  6. Coadwell WJ, Ward PFV (1975) Observations on the development ofHaemonchus contortus in young sheep given a single infection. Parasitology 71:505–515PubMedGoogle Scholar
  7. Croll NA (1972) Energy utilisation of infective larvae ofAncylostoma tubaeforme. Parasitology 64:355–368PubMedGoogle Scholar
  8. De Carneri I (1963) On the numerial ratio between male and female ancylostomes. Trans R Soc Trop Med Hyg 57:229Google Scholar
  9. Durham PJK, Elliott DC (1976) ExperimentalOstertagia infection of sheep: Development of worm populations and lesions resulting from different dose-levels of larvae. Vet Parasitol 2:157–166Google Scholar
  10. Georgi JR, Lejambre LF, Ractliffe LH (1969)Ancylostoma caninum burden in relationship to erythrocyte loss in dogs. J Parasitol 55:1205–1211PubMedGoogle Scholar
  11. Krupp IM (1961) Effects of crowding and super-infection on habitat selection and egg production ofAncylostoma caninum. J Parasitol 47:957–961PubMedGoogle Scholar
  12. Miale JN (1967) Laboratory medicine haematology. C. V. Mosby Company, St. LouisGoogle Scholar
  13. Miller TA (1965) Influence of age and sex on the susceptibility of dogs to primary infection withAncylostoma caninum. J. Parasitol 51:701–704PubMedGoogle Scholar
  14. Nwosu ABC (1978) Energy cost of locomotory activity in larval hookworms. Int J Parasitol 8:355–359PubMedGoogle Scholar
  15. Ogunsusi R (1978) Changes in blood values of sheep suffering from acute and chronic helminthiasis. Res Vet Sci 25:298–301PubMedGoogle Scholar
  16. Roche M, Patrzek D (1966) The female to male ratio FMR in hookworm. J Parasitol 52:117–121PubMedGoogle Scholar
  17. Ross JG, Armour J (1960) The significance of faecal egg counts and use of serum albumin levels and packed cells volume percentages to assess pathogenicity of helminthiasis. Vet Rec 72:137–139Google Scholar
  18. Schillorn van Veen TJ (1973) Small ruminant health problems in Northern Nigeria with emphasis on the helminthiasis. Niger Vet J 2:26–31Google Scholar
  19. Wells HS (1931) Observations on the blood sucking activities of the hookwormAncylostoma caninum. J Parasitol 17:167–182Google Scholar

Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • C. O. E. Onwuliri
    • 1
  • A. B. C. Nwosu
    • 1
  • A. O. Anya
    • 1
  1. 1.Parasitic Nematodes Research Project, Department of ZoologyUniversity of NigeriaNsukka

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