| Spermatogenesis in white-lipped peccaries (Tayassu pecari). | |
| | |
MedLine Citation:
|
PMID: 16647229 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We describe here morphological and functional analyses of the spermatogenic process in sexually mature white-lipped peccaries. Ten sexually mature male animals, weighing approximately 39 kg were studied. Characteristics investigated included the gonadosomatic index (GSI), relative frequency of stages of the cycle of seminiferous epithelium (CSE), cell populations present in the seminiferous epithelium in stage 1 of CSE, intrinsic rate of spermatogenesis, Sertoli cell index, height of seminiferous epithelium and diameter of seminiferous tubules, volumetric proportion of components of the testicular parenchyma and length of seminiferous tubules per testis and per gram of testis. The GSI was 0.19%, relative frequencies of pre-meiotic, meiotic and post-meiotic phases were, respectively 43.6%, 13.8% and 42.6%, general rate of spermatogenesis was 25.8, each Sertoli cell supported an average 18.4 germinative cells, height of seminiferous epithelium and diameter of seminiferous tubules were, respectively, 78.4 microm and 225.6 microm, testicular parenchyma was composed by 75.8% seminiferous tubules and 24.2% intertubular tissue, and length of seminiferous tubules per gram of testis was 15.8m. These results show that, except for overall rate of spermatogenesis, the spermatogenic process in white-lipped peccaries is very similar to that of collared peccaries, and that Sertoli cells have a greater capacity to support germinative cells than most domestic mammals. |
| | |
Authors:
|
Deiler S Costa; Carlos M C Menezes; Tarcízio A R Paula |
Related Documents
:
|
15856309 - Understanding the role of thyroid hormone in sertoli cell development: a mechanistic hy... 15062549 - In vivo and in vitro constant expression of gata-4 in mouse postnatal sertoli cells. 1846579 - Basement membrane increases g-protein levels and follicle-stimulating hormone responsiv... 9294649 - Immunolocalization of androgen receptor and estrogen receptor in the developing testis ... 11784049 - Evidence that sry is expressed in pre-sertoli cells and sertoli and granulosa cells hav... 7626709 - Expression of the small proteoglycans biglycan and decorin in the adult human testis. 17923279 - Proanthocyanidin from grape seeds inactivates the pi3-kinase/pkb pathway and induces ap... 10443289 - A simple image analysis method for evaluating cell binding to derivatized beads. 2401869 - Extracellular atp-induced production of hydrogen peroxide in porcine thyroid cells. |
Publication Detail:
|
Type: Journal Article Date: 2006-05-02 |
Journal Detail:
|
Title: Animal reproduction science Volume: 98 ISSN: 0378-4320 ISO Abbreviation: Anim. Reprod. Sci. Publication Date: 2007 Apr |
Date Detail:
|
Created Date: 2007-02-19 Completed Date: 2007-10-04 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7807205 Medline TA: Anim Reprod Sci Country: Netherlands |
Other Details:
|
Languages: eng Pagination: 322-34 Citation Subset: IM |
Affiliation:
|
State University of North Fluminense, CCTA/LSA, Av. Alberto Lamego 2000, Campos dos Goytacazes, RJ 28013-602, Brazil. sampacosta@yahoo.com.br |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Artiodactyla / physiology* Male Seminiferous Epithelium / cytology Seminiferous Tubules / cytology Spermatogenesis* Testis / anatomy & histology, physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: In vitro modulation of HERG channels by organochlorine solvent trichlormethane as potential explanat...
Next Document: Preparation of roxithromycin-polymeric microspheres by the emulsion solvent diffusion method for tas...