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Schistosoma mansoni: the ultrastructure of the ducts of the male reproductive system.

Published online by Cambridge University Press:  06 April 2009

Olubunmi A. Otubanjo
Olubunmi A. Otubanjo
Affiliation:
Department of Zoology, University College, Cardiff
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Summary

The reproductive duct of the male blood fluke Schistosoma mansoni is relatively short and undulating, extending from the most posterior testis to the beginning of the gynecophoric canal. The reproductive duct may be divided into 3 main regions which differ in ultrastructure; the vas efferens/deferens, the seminal vesicle and the cirrus tube. The epithelium of the vas efferens/deferens consists of a single layer of elongate cells with abundant convoluted lamellae on their apical surfaces. The wall of the seminal vesicle and the cirrus tube are tegumentary in nature. The basic similarities in structure of the surface tegument, the seminal vesicle and the cirrus tube suggest a common embryological origin. The presence of complex lamellae on the luminal surface suggests that the vas efferens and deferens have secretory and possibly nutritive functions apart from temporarily storing developing germ cells. The primary function of the seminal vesicle appears to be that of sperm storage; while the cirrus tube with its complex infolded wall is extensible for insemination. The presence of abundant concentrically distributed sensory papillae around the male genital pore may assist in the pairing of males and females.

Type
Research Article
Information
Parasitology , Volume 81 , Issue 3 , December 1980 , pp. 565 - 571
Copyright
Copyright © Cambridge University Press 1980

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References

REFERENCES

Erasmus, D. A. (1973). A comparative study of the reproductive system of mature, immature and ‘unisexual’ female Schistosoma mansoni. Parasitology 67, 165–83.CrossRefGoogle ScholarPubMed
Faust, E. C., Jones, D. A. & Hoffman, W. A. (1934). Studies on Schistosomiasis mansoni in Puerto Rico. III Biological studies, 2. The mammalian phase of the life cycle. Puerto Rican Journal of Public Health 10, 133–96.Google Scholar
Halton, D. W. & Hardcastle, A. (1977). Ultrastructure of the male accessory ducts and prostate gland of Diclidophora merlangi (Monogenoidae). International Journal for Parasitology 7, 393–401.CrossRefGoogle Scholar
Hockley, D. J. (1973). Ultrastructure of the tegument of Schistosoma. Advances in Parasitology 2, 233–305.CrossRefGoogle Scholar
Kamson, O. A. (1976). Histological and ultrastructural studies of the male Schistosoma mansoni. Ph.D. thesis, University of Wales.Google Scholar
Kitajima, E. W., Paraense, W. L. & Correa, L. R. (1976). The fine structure of Schistosoma mansoni sperm (Trematoda: Digenea). Journal of Parasitology 62, 215–21.Google Scholar
Michaels, R. M. (1969). Mating of Schistosoma mansoni in vitro. Experimental Parasitology 25, 58–71.CrossRefGoogle ScholarPubMed
Morris, G. P. & Threadgold, L. T. (1968). Ultrastructure of the tegument of adult Schistosoma mansoni. Journal of Parasitology 54, 15–27.CrossRefGoogle ScholarPubMed
Pappas, P. W. & Read, C. P. (1975). Membrane transport in helminth parasites – a review. Experimental Parasitology 37, 469–530.CrossRefGoogle ScholarPubMed
Severinghaus, A. E. (1928). Sex studies in Schistosoma japonicum. Quarterly Journal of Microscopical Science 71, 653–702.Google Scholar
Silveria, M. (1973). Intra-axonemal glycogen in 9 + 1 flagella of flatworms. Journal of Ultrastructural Research, 44, 253–64.CrossRefGoogle Scholar
Spence, I. M. & Silk, H. (1971). Ultrastructural studies of the blood fluke Schistosoma mansoni. The female reproductive system. South African Journal of Medical Science 36, 41–50.Google ScholarPubMed