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Schistosoma mansoni: vitelline gland development in females from single sex infections

Published online by Cambridge University Press:  05 June 2009

M. K. Shaw
M. K. Shaw
Affiliation:
Department of Zoology, University College, P.O. Box 78, Cardiff CFI IXL, Wales, U.K.
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Abstract

Vitelline gland development and incomplete parthenogenesis in 65-week-old female Schistosoma mansoni from single sex infections is described. Vitelline gland development was restricted to the extreme posterior end of each worm and the developed vitelline lobules showed the normal sequence of development and maturation. The ovary, however, was always in an immature state. Egg production occurred although the eggs were non-viable.

The results suggest that, whilst male stimulation is not necessary to initiate vitelline gland development and egg production, it appears to be essential for the complete maturation of the ovary. The possible importance of ovarian maturation to the production of viable eggs is discussed.

Keywords

Schistosoma mansoniunisexual femalesvitelline glandeggs
Type
Research Papers
Information
Journal of Helminthology , Volume 61 , Issue 3 , September 1987 , pp. 253 - 259
Copyright
Copyright © Cambridge University Press 1987

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