Document Detail

Duration of the cycle of the seminiferous epithelium in the prairie vole (Microtus ochrogaster ochrogaster).
MedLine Citation:
PMID:  781176     Owner:  NLM     Status:  MEDLINE    
The cycle of the seminiferous epithelium in M. o. ochrogaster was divided into eight readily recognizable stages based on the morphology of the developing spermatid. The mean relative frequencies of Stages I through VIII were 11.6, 19.25, 20.00, 19.00, 8.42, 6.17, 9.25 and 6.58%, respectively. The duration of one cycle of the seminiferous epithelium in this species, as determined from autoradiographs of thymidine-H3 injected testes was 7.17 days (S.E. +/- 0.03). This is the shortest spermatogenic cycle reported for any mammal to date. The approximate durations of the meiotic prophase, meiotic divisions, and spermiogenesis were 8.8, 0.4 and 12.2 days, respectively. The entire process of spermatogenesis was estimated to span approximately 28.68 days. The number of cycles that spermiogenesis spanned in this species was compared to values calculated for other species. Values within groups of related species appear relatively constant, but between groups the values are variable.
H M Schuler; H T Gier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of experimental zoology     Volume:  197     ISSN:  0022-104X     ISO Abbreviation:  J. Exp. Zool.     Publication Date:  1976 Jul 
Date Detail:
Created Date:  1976-09-25     Completed Date:  1976-09-25     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  0375365     Medline TA:  J Exp Zool     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1-11     Citation Subset:  IM    
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MeSH Terms
Arvicolinae / anatomy & histology*,  physiology
Rodentia / anatomy & histology*
Seminiferous Epithelium / cytology*
Spermatids / cytology
Spermatocytes / cytology
Testis / cytology*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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