Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/66276
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Type: Journal article
Title: The morphology of the squirrel spermatozoon: A highly complex male gamete with a massive acrosome
Author: Breed, W.
Tan, S.
Leigh, C.
Aplin, K.
Dvorakova-Hortova, K.
Moore, H.
Citation: Journal of Morphology, 2011; 272(7):883-889
Publisher: Wiley-Liss
Issue Date: 2011
ISSN: 0362-2525
1097-4687
Statement of
Responsibility: 
William G. Breed, Serica Tan, Chrisopher M. Leigh, Ken P. Aplin, Katerina Dvorakova-Hortova and Harry D.M. Moore
Abstract: This study describes the morphology of the spermatozoon from the cauda epididymidis of representative members of two squirrel subfamilies, the Sciurinae and Callosciurinae, as determined by fluorescent, scanning, and transmission electron microscopy. All species examined possess a massive apical segment of the sperm acrosome. It varied markedly in the extent of its caudal flexion but was always much larger, and more complex, than that of the spermatozoon of most other rodents so far documented, although somewhat similar to that of some hystricomorph species. Because this sperm form appears to be present within at least two of the three major living clades of Rodentia, it is possible that it is the ancestral condition within this mammalian order.
Keywords: squirrel; spermatozoon; acrosome
Rights: Copyright © 1999–2011 John Wiley & Sons, Inc
RMID: 0020110290
DOI: 10.1002/jmor.10955
Appears in Collections:Anatomical Sciences publications
Environment Institute publications

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