Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-25T12:47:05.191Z Has data issue: false hasContentIssue false
  • English
  • Français

Passage of Eggs by Hosts Infected with Schistosoma haematobium*

Published online by Cambridge University Press:  05 June 2009

Robert E. Kuntz
Robert E. Kuntz
Affiliation:
Parasitology Department, U.S. Naval Medical Research Unit No.2, Taipei, Taiwan (Formosa) and NAMRU-3, Cairo, Egypt (UAR)
Get access Rights & Permissions [Opens in a new window]

Extract

Study of a series of lower vertebrates and 2 primates infected with Schistosoma haematobium has revealed their egg producing or egg passing potentials. Viable eggs were not passed by albino or wild rats (R. rattus), or by hedgehogs (Hemiechinus). In hosts passing eggs the counts were not great but data do suggest host-parasite relationships which permit continuance of the parasite cycle. Egg passage was erratic and tended to follow a normal curve, i.e., few eggs at first, building up to a peak period after which the counts usually diminished. There was no close correlation between the sites of egg deposition along the intestinal tract and the numbers of egg produced. The peak of egg production was irregular in time after first egg detection as well as in duration. There was wide range in the percentages of viable eggs passed by different hosts and by individuals of the same species. Data reveal the possibility of lower vertebrates serving as reservoirs should satisfactory circumstances allow.

Type
Research Article
Information
Journal of Helminthology , Volume 35 , supplement S1 , April 1961 , pp. 107 - 116
Copyright
Copyright © Cambridge University Press 1961

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

Alves, W., 1958.—“The distribution of Schistosoma eggs in human tissues.” Bull. World Hlth. Org., 18, 1092–1097. (W.L. 5748c).Google ScholarPubMed
Barlow, C. H., 1948.—“Une théorie sur la ponte de Bilharzia haematobia.” Ann. Parasit. hum. comp., 23, 301–304. (W.L. 899a).CrossRefGoogle Scholar
Gerritsen, T., Walker, A. R. P., de Meillon, B. and Yeo, R. M., 1953.—“Long term investigation of blood loss and egg load in urinary schistosomiasis in the adult African Bantu.” Trans. R. Soc. trop. Med. Hyg., 47, 134–140. (W.L. 21671).CrossRefGoogle ScholarPubMed
Kuntz, R. E., 1955.—“Biology of the schistosome complexes.” Am. J. Trop. med. Hyg., 4, 383–413.CrossRefGoogle ScholarPubMed
Kuntz, R. E., and Malakatis, G. M., 1955a.—“Susceptibility studies in schistoso miasis, III. Infection of various experimental hosts with Schistosoma haematobium in Egypt.” Exptl. Parasit., 4, 1–20.CrossRefGoogle Scholar
Kuntz, R. E., 1955b.—“Susceptibility studies in schistosomiasis. IV. Susceptibility of wild mammals to infection by Schistosoma haematobium in Egypt.” J. Parasit., 41, 467–475. (W.L. 11428).CrossRefGoogle ScholarPubMed
Moore, D. V. and Meleney, H. E., 1954.—“Comparative susceptibility of common laboratory animals to experimental infection with Schistosoma haematobium.” Ibidem, 40, 392–397.Google ScholarPubMed
Moore, D. V. and Sandground, J. H., 1958.—“The relative egg producing capacity of Schistosoma mansoni and Schistosoma japonicum.” Am. J. Trop. med. Hyg., 5, 831–840.CrossRefGoogle Scholar
Pesigan, T. P., Farooq, M., Hairston, N. G., Jauregui, J. J., Garcia, E. G., Santos, A. T., Santos, B. C. and Besa, A. A., 1958.—“Studies on Schistosoma japonicum infection in the Philippines. 1. General considerations and epidemiology.” Bull. World Hlth. Org., 18, 345–455. (W.L. 5748c).Google ScholarPubMed
Scott, J. A., 1957.—“Egg counts as estimates of intensity of infection with Schistosoma haematobium.” Texas Rep. biol. Med., 15, 425–430. (W.L. 21126a).Google ScholarPubMed