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dc.contributor.author
Grier, Harry J.  
dc.contributor.author
Uribe, Mari Carmen  
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Lo Nostro, Fabiana Laura  
dc.contributor.author
Mims, Steven D.  
dc.contributor.author
Parenti, Lynne R.  
dc.date.available
2017-07-04T21:18:57Z  
dc.date.issued
2016-08  
dc.identifier.citation
Grier, Harry J.; Uribe, Mari Carmen; Lo Nostro, Fabiana Laura; Mims, Steven D.; Parenti, Lynne R.; Conserved form and function of the germinal epithelium through 500 million years of vertebrate evolution; Wiley; Journal of Morphology; 277; 8; 8-2016; 1014-1044  
dc.identifier.issn
0362-2525  
dc.identifier.uri
http://hdl.handle.net/11336/19549  
dc.description.abstract
The germinal epithelium, i.e., the site of germ cell production in males and females, has maintained a constant form and function throughout 500 million years of vertebrate evolution. The distinguishing characteristic of germinal epithelia among all vertebrates, males, and females, is the presence of germ cells among somatic epithelial cells. The somatic epithelial cells, Sertoli cells in males or follicle (granulosa) cells in females, encompass and isolate germ cells. Morphology of all vertebrate germinal epithelia conforms to the standard definition of an epithelium: epithelial cells are interconnected, border a body surface or lumen, are avascular and are supported by a basement membrane. Variation in morphology of gonads, which develop from the germinal epithelium, is correlated with the evolution of reproductive modes. In hagfishes, lampreys, and elasmobranchs, the germinal epithelia of males produce spermatocysts. A major rearrangement of testis morphology diagnoses osteichthyans: the spermatocysts are arranged in tubules or lobules. In protogynous (female to male) sex reversal in teleost fishes, female germinal epithelial cells (prefollicle cells) and oogonia transform into the first male somatic cells (Sertoli cells) and spermatogonia in the developing testis lobules. This common origin of cell types from the germinal epithelium in fishes with protogynous sex reversal supports the homology of Sertoli cells and follicle cells. Spermatogenesis in amphibians develops within spermatocysts in testis lobules. In amniotes vertebrates, the testis is composed of seminiferous tubules wherein spermatogenesis occurs radially. Emerging research indicates that some mammals do not have lifetime determinate fecundity. The fact emerged that germinal epithelia occur in the gonads of all vertebrates examined herein of both sexes and has the same form and function across all vertebrate taxa. Continued study of the form and function of the germinal epithelium in vertebrates will increasingly clarify our understanding of vertebrate reproduction.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Germinal Epithelium  
dc.subject
Basement Membrane  
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Gametogenesis  
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Follicle Complex  
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Folliculogenesis  
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Sertoli Cells  
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Sex Reversal  
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Otros Tópicos Biológicos  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Conserved form and function of the germinal epithelium through 500 million years of vertebrate evolution  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-07-04T15:34:15Z  
dc.journal.volume
277  
dc.journal.number
8  
dc.journal.pagination
1014-1044  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Hoboken  
dc.description.fil
Fil: Grier, Harry J.. National Museum of Natural History; Estados Unidos  
dc.description.fil
Fil: Uribe, Mari Carmen. Universidad Nacional Autónoma de México; México  
dc.description.fil
Fil: Lo Nostro, Fabiana Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina  
dc.description.fil
Fil: Mims, Steven D.. Kentucky State University; Estados Unidos  
dc.description.fil
Fil: Parenti, Lynne R.. National Museum of Natural History; Estados Unidos  
dc.journal.title
Journal of Morphology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/jmor.20554  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jmor.20554/abstract