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- Title
Ultrastructure of Spermatozoa of the Yellow-rumped Elephant Shrew Rhynchocyon chrysopygus (Mammalia: Macroscelidea) and the Phylogeny of Elephant Shrews.
- Authors
Woodall, Peter F.; FitzGibbon, Clare
- Abstract
The spermatozoa of the yellow-rumped elephant shrew Rhynchocyon chrysopygus have a spatulate head, tapering to a rounded proximal end with a marked narrowing at the equatorial segment. There is a short pointed subacrosome and about 24 gyres of mitochondria were found in the midpiece. The coarse fibres surrounding the axonome show enlargement of numbers 1,5,6 and 9. The spermatozoa of all genera of elephant shrews have now been described allowing comparisons among them. R. chrysopygus has the shortest spermatozoon and the fewest number of gyres. The pointed subacrosome is considered an ancestral feature and is shared with Macroscetides. The enlargement of coarse fibres 1, 5, 6 and 9 is found in several groups including members of the archonta and paenungulates, both postulated as being related to elephant shrews.
- Subjects
ELEPHANT shrews; MACROSCELIDEA; SPERMATOZOA; PROTOPLASM; MITOCHONDRIA
- Publication
Acta Zoologica, 1995, Vol 76, Issue 1, p19
- ISSN
0001-7272
- Publication type
Article
- DOI
10.1111/j.1463-6395.1995.tb00978.x