Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-27T18:21:16.509Z Has data issue: false hasContentIssue false
  • English
  • Français

The effects of crowding on adults of Echinostoma caproni in experimentally infected golden hamsters

Published online by Cambridge University Press:  05 June 2009

G. Yao ,
J. E. Huffman  and
B. Fried
G. Yao
Affiliation:
Department of Biological Sciences, East Stroudsburg University, East Stroudsburg, PA 18301, USA
J. E. Huffman*
Affiliation:
Department of Biological Sciences, East Stroudsburg University, East Stroudsburg, PA 18301, USA
B. Fried
Affiliation:
Department of Biology, Lafayette College, Easton, PA 18042, USA
*
1To whom correspondence should be sent.
Get access Rights & Permissions [Opens in a new window]

Abstract

Fifty-nine of 60 (98%), 6-month-old male golden hamsters, Mesocricetus auratus, fed 15 (group A). 50 (group B), or 200 (group C) metacercarial cysts of Echinostoma caproni (Digenea: Echinostomatidae) were infected 7–34 days postexposure. The mean number of worms recovered in groups A, B and C were 9, 10, and 50, respectively. The percentage recovery was significantly different between group A (63%) and groups B (21%) and C (23%). The intestine was divided into three equal regions (I, II, III). Worms from group A were located in segments II and III of the small intestine whereas worms from groups B and C were distributed in all three segments. The body area, ovarian and testicular areas of worms from group A were greatest, followed in decreasing order by body and gonadal areas of worms from groups B and C. Echinostoma caproni eggs were found in the faeces of all the hamsters examined from groups A, B and C by days 9, 10 and 11, respectively. Physical damage occurred at the site of attachment of the echinostome. Pathological observations indicated the presence of enlarged lymphatic nodules with lymphocytes being the primary cellular infiltrate at the site of parasite attachment.

Keywords

Echinostoma capronihamsterinfectivitygrowthdevelopmentpathologyTrematodaprepatency
Type
Research Papers
Information
Journal of Helminthology , Volume 65 , Issue 4 , December 1991 , pp. 248 - 254
Copyright
Copyright © Cambridge University Press 1991

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

Boddington, M. J. & Mettrick, D. F. (1981) Production and reproduction in Hymenolepis diminuta (Platyhelminthes: Cestoda). Canadian Journal of Zoology, 59, 1962–1972.CrossRefGoogle Scholar
Fischthal, J. H., Carson, D. O. & Vaught, R. S. (1982) Comparative size allometry of the digenetic trematode Lissorchis attenuatus (Monorchiidae) at four intensities of infection in the white sucker. Journal of Parasitology, 68, 314–318.CrossRefGoogle Scholar
Franco, J., Huffman, J. E. & Fried, B. (1988) The effects of crowding on adults of Echinostoma revolutum (Digenea: Echinostomatidae) in experimentally infected golden hamsters. Mesocricetus auratus. Journal of Parasitology, 74, 240–243.CrossRefGoogle ScholarPubMed
Fried, B. & Freeborne, N. E. (1984) Effects of Echinostoma revolutum (Trematoda) adults on various dimensions of the chicken intestine, and observations on worm crowding. Proceedings of the Helminthological Society of Washington, 51, 297–300.Google Scholar
Fried, B. & Nelson, P. D. (1978) Host-parasite relationships of Zygocotyle lunata (Trematoda) in the domestic chick. Parasitology, 77, 49–55.CrossRefGoogle ScholarPubMed
Fried, B., Donovick, R. & Emili, S. (1988) Infectivity, growth and development of Echinostoma liei (Trematoda) in the domestic chick. International Journal for Parasitology, 18, 413–414.CrossRefGoogle ScholarPubMed
Holmes, J. C. (1961) Effects of concurrent infection on Hymenolepis diminuta (Cestoda) and Moniliformis dubius (Acanthocephala). I. General effects and comparison with crowding. Journal of Parasitology, 47, 209–216.CrossRefGoogle ScholarPubMed
Holmes, J. C. (1962) Effects of concurrent infection on Hymenolepis diminuta (Cestoda) and Moniliformis dubius (Acanthocephala). II. Effects on growth. Journal of Parasitology, 48, 97–100.CrossRefGoogle ScholarPubMed
Huffman, J. E. & Fried, B. (1990) Echinostoma and echinostomiasis. Advances in Parasitology, 29, 215–269.CrossRefGoogle ScholarPubMed
Huffman, J. E., Michos, C. & Fried, B. (1986) Clinical and pathological effects of Echinostoma revolutum (Digenea: Echinostomatidae) in the golden hamster, Mesocricetus auratus. Parasitology, 93, 505–515.CrossRefGoogle ScholarPubMed
Huffman, J. E., Alcaide, A. & Fried, B. (1988) Single and concurrent infections of the golden hamster, Mesocricetus auratus, with Echinostoma revolutum and E. Iiei (Trematoda: Digenea). Journal of Parasitology, 74, 604–608.CrossRefGoogle Scholar
Kayes, S. G. & Oaks, J. A. (1976) The effect of inoculum size and length of infection on the distribution of Toxocara canis larvae in the mouse. American Journal of Tropical Medicine and Hygiene, 25, 573.CrossRefGoogle ScholarPubMed
Kennedy, C. R., Broughton, R. F. & Hine, P. M. (1976) The sites occupied by the acanthocephalan Pomphorhynchus laevis in the alimentary canal of fish. Parasitology, 72, 195–206.CrossRefGoogle ScholarPubMed
Keymer, A. (1982) Density-dependent mechanisms in the regulation of intestinal helminth populations. Parasitology, 84, 573–587.CrossRefGoogle ScholarPubMed
Mohandas, A. & Nadakal, M. (1978) In vivo development of Echinostoma malayanum Leiper, 1911 with notes on effects of population density, chemical composition and pathogenicity, and in vitro excystment of the metacercaria (Trematoda: Echinostomatidae). Zeitschrift für Parasitenkunde, 55, 139–151.CrossRefGoogle ScholarPubMed
Odaibo, A. B., Christensen, N. & Ukoli, F. M. A. (1988) Establishment, survival and fecundity in Echinostoma caproni infections in NMRI mice. Proceedings of the Helminthological Society of Washington, 55, 265–269.Google Scholar
Rankin, J. S. (1937) An ecological study of parasites of some North Carolina salamanders. Ecological Monographs, 7, 169–269.CrossRefGoogle Scholar
Read, C. P. (1951) The “crowding effect” in tapeworm infections. Journal of Parasitology, 37, 174–178.CrossRefGoogle Scholar
Roberts, L. D. & Insler, G. D. (1982) Developmental physiology of cestodes. XVII. Some biological properties of putative “crowding factors” in Hymenoloepis diminuta. Journal of Parasitology, 68, 263.CrossRefGoogle ScholarPubMed
Willey, C. H. (1941) The life history and bionomics of the trematode Zygocotyle lunata (Paramphistomide). Zoologica, 26, 65–68.Google Scholar