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The production, transfer and assimilation of spermatophores by Entobdella soleae, a monogenean skin parasite of the common sole

Published online by Cambridge University Press:  06 April 2009

G. C. Kearn
G. C. Kearn
Affiliation:
School of Biological Sciences, University of East Anglia, Norwich
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Summary

It has been shown that mating involving mutual exchange of spermatophores takes place in the skin-parasitic monogenean Entobdella soleae from Solea solea. The spermatophores are attached to the ventral surface of the body in the region of the vaginal opening and they are sucked into the vagina after mating by muscular contractions of the vaginal region.

Mating takes place between young individuals with no vitellaria and between fully mature egg-laying adults but there is no evidence that self-fertilization takes place.

The apparatus which manufactures the spermatophores is described and the evidence indicates that spermatozoa are injected into the jelly-like matrix of the spermatophore as the matrix is being extruded into the surrounding sea-water.

I would like to thank the Director and Staff of the Laboratory of the Marine Biological Association at Plymouth for providing excellent facilities for this work and I am particularly grateful to Mr J. E. Green, who kindly fed and maintained infected soles at the Laboratory.

Type
Research Article
Information
Parasitology , Volume 60 , Issue 2 , April 1970 , pp. 301 - 311
Copyright
Copyright © Cambridge University Press 1970

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