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XVIII.—The Spermatozoon of the Spider Beetle Ptinus tectus Boieldieu as seen by Light and Electron Microscopy*

Published online by Cambridge University Press:  11 June 2012

Jozef Dlugosz  and
John W. Harrold
Jozef Dlugosz
Affiliation:
Natural Philosophy and Natural History Departments, University of St Andrews, University College, Dundee.
John W. Harrold
Affiliation:
Natural Philosophy and Natural History Departments, University of St Andrews, University College, Dundee.
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Synopsis

The mature Ptinid sperm examined under the light microscope is found to be specialised in that the chromatin is not contained within a sperm head but is distributed along a central axis. The migration of chromatin resembles that found in Coccids by Hughes-Schrader (1948). Surrounding the axis is a more flexible helical membrane extending the whole length of the sperm.

Under the electron microscope the membrane appears to consist of eighteen or twenty thin fibres and two thick fibres with striated sheaths. Near the posterior end of the membrane the fibres are surrounded by a ring. The structure is simpler than that of mammalian and avian sperms examined by other workers with similar techniques. Under the electron microscope, stages in the migration of chromatin in the immature sperm show a number of discrete opaque bodies which may be chromosomes. The approximate dimensions of the various structures are given.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh, Section B: Biological Sciences , Volume 64 , Issue 3 , 1951 , pp. 353 - 366
Copyright
Copyright © Royal Society of Edinburgh 1951

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References

References to Literature

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