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On the Life History, Growth and Development from the Metacercarial Stage to Adulthood, of Clinostomum tilapiae Ukoli, 1966*

Published online by Cambridge University Press:  18 November 2009

F. M. A. Ukoli
F. M. A. Ukoli
Affiliation:
Department of Zoology, University of Ibadan, Ibadan, Nigeria
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Extract

The experimental infection of young cattle egrets with metacercarial cysts of Clinostomum tilapiae Ukoli, 1966 from Tilapia spp. is described.

A table showing the duration of infection, the number of parasites recovered, the percentage of infection and the location of the parasites within the host is constructed and the results discussed.

A graph of mean length and breadth of body, oral and ventral suckers, cirrus pouch, ovary and anterior testis, is plotted against the duration of infection in days. Most of these dimensions are found to attain a peak two days after infection. It is also found that while the ovary increases in size with age, the cirrus pouch remains constant, so that in mature adults, both are about equal in size,

It is shown, by plotting length of organs against length of body and by expressing mean measurements of certain dimensions as percentages of body length, that apart from the testes, all the other organs in both the metacercariae and the adults maintain a constant relationship both with one another and with body length as they grow older.

Type
Research Papers
Information
Journal of Helminthology , Volume 40 , Issue 1-2 , June 1966 , pp. 215 - 226
Copyright
Copyright © Cambridge University Press 1966

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References

Agarwal, S. M., 1959.— “Studies on the morphology, systematics and life history of Clinostomum giganticum n.sp.” Ind. J. Helminth., 11, 75–115.Google Scholar
Dawes, B., 1962.— “On the growth and maturation of Fasciola hepatica L. in the mouse”. J. Helminth., 36, 11–38.CrossRefGoogle Scholar
Ukoli, F. M. A., 1966.– “On Clinostomum tilapiae n.sp. and C. phalacrocoracis Dubots, 1931 from Ghana, and a discussion on the systematics of the genus Clinostomum Leidy, 1856.” J. Helminth., 40, 187–214.CrossRefGoogle Scholar