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Predictability of morphological gradients in the tapeworm, Hymenolepis diminuta

Published online by Cambridge University Press:  05 June 2009

P.W. Pappas
P.W. Pappas*
Affiliation:
Department of Zoology, The Ohio State University, 1735 Neil Avenue, Columbus, OH 43210, USA.
*
* Fax: 614 292 2030 E-mail: pappas.3@osu.edu
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Abstract

The strobila of an adult tapeworm represents a continual gradient of developmental stages from immature to gravid proglottids. The purpose of this study was to determine if organogenesis (as measured by the develop mental gradient) in tapeworms within a single host and among different hosts occurred at the same rates. Rats were infected with Hymenolepis diminuta and the tapeworms were recovered 20 days post-infection. The total number of proglottids in each worm was determined, and five “benchmarks” of organogenesis were quantified. The data demonstrated that organogenesis in worms from a single host occurred at a relatively constant rate, but that rates in tapeworms from different hosts were different.

Type
Research Papers
Information
Journal of Helminthology , Volume 72 , Issue 1 , March 1998 , pp. 55 - 57
Copyright
Copyright © Cambridge University Press 1998

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References

Pappas, P.W. (1984) Kinetic analyses of the membranebound alkaline phosphatase activity of Hymenolepis diminuta (Cestoda: Cyclophyllidea) in relation to development of the tapeworm in the definitive host. Journal of Cellular Biochemistry 25, 131–137.CrossRefGoogle ScholarPubMed
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