Document Detail

Sertoli cell index and spermatic reserves in adult captive African lions (Panthera leo, Linnaeus, 1758).
MedLine Citation:
PMID:  17499460     Owner:  NLM     Status:  MEDLINE    
The intrinsic yield of spermatogenesis and the supporting indexes of the Sertoli cells are the best indicators for the spermatic production capacity in a species. The aim of the present study was to quantify the intrinsic yield of the spermatogenetic process, as well as the Sertoli cell index and spermatic reserves. Testicular fragments of five adult African lions was fixed in 4% glutaric aldehyde, dehydrated at increasing alcohol concentrations, included into hydroxyethyl methacrylate, and were cut into 4 microm thickness. In the seminiferous epithelium of the African lions, 10.3 primary spermatocytes at pre-leptotene phase are produced by the type-A spermatogonia. During meiotic divisions, only 2.7 spermatids were produced from the primary spermatocytes. The general spermatogenesis production in the African lions was approximately 22.1 cells, and each Sertoli cell was able to sustain and maintain approximately 14.9 cells of the germinative line, from which 7.9 are round spermatids. A total of 103x10(6) spermatozoa are produced by each testis gram at each cycle of the seminiferous epithelium. The spermatic reserve of lion is below the amplitude observed in mammals.
João Bosco Gonçalves de Barros; Tarcízio Antônio Rego de Paula; Sérgio Luis Pinto da Matta; Cláudio César Fonseca; Flaviana Lima Guião Leite; João Luiz Rossi Jr; Priscila Carvalho de Oliveira; Eduardo Paulino da Costa
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-04-08
Journal Detail:
Title:  Animal reproduction science     Volume:  102     ISSN:  0378-4320     ISO Abbreviation:  Anim. Reprod. Sci.     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2007-10-15     Completed Date:  2007-12-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7807205     Medline TA:  Anim Reprod Sci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  350-6     Citation Subset:  IM    
Veterinary Department, Federal University of Viçosa, Minas Gerais 36571-000, Brazil.
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MeSH Terms
Animals, Zoo / physiology*
Lions / physiology*
Seminiferous Epithelium / cytology
Sertoli Cells / physiology*
Sperm Count*
Spermatids / cytology
Spermatocytes / cytology
Spermatogenesis / physiology*
Spermatogonia / cytology
Testis / cytology

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

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