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Biology of Reproduction, Vol 14, 327-331, Copyright © 1976 by Society for the Study of Reproduction

Ultrastructure of Epididymal Spermatozoa of the Asiatic Musk Shrew, Suncus murinus

JAMES A. GREEN 1, and G. L. DRYDEN 1

1 Department of Anatomy, University of Missouri-Columbia, Columbia, Missouri 65201 and Biology Department, Slippery Rock State College Slippery Rock, Pennsylvania 16057


The ultrastructure of epididymal spermatozoa of the insectivore, Suncus murinus, is described. The acrosome of Suncus spermatozoa is noteworthy for its size. It is an elongate flattened structure 21.5 µm long, 17.5 µm at its greatest width and 1 µm thick. The nucleus is also flattened and bears a definite indentation that marks the posterior limit of the acrosome. The midpiece is long and possesses more than 100 mitochondrial gyres. The dense outer fibers of the midpiece show bilateral rather than radial symmetry, the bilateral symmetry being achieved from an odd number of fibers as a result of pronounced lobation of one of the fibers.

Submitted on August 13, 1975
Accepted on November 19, 1975




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