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Spermiogenesis in birds.

Authors :
Aire TA
Source :
Spermatogenesis [Spermatogenesis] 2014 Oct 30; Vol. 4 (3), pp. e959392. Date of Electronic Publication: 2014 Oct 30 (Print Publication: 2014).
Publication Year :
2014

Abstract

Current knowledge on avian spermiogenesis, including strengths and weaknesses, has been reviewed. Information on avian spermiogenesis considerably lags behind that in mammals because of the paucity of reports in birds. Spermiogenesis in passerine birds has received even much less attention than in non-passerine birds. Mechanisms underlying morphogenesis of the acrosome and nucleus, and roles of microtubular assemblies are poorly understood. The proximal centriole found in non-passerine birds, but hitherto considered to be absent in passerine birds, has recently been described in spermatids and mature spermatozoa of 2 passeridan species, including the Masked weaver for which new and detailed spermiogenetic information is provided in this review. A great deal more studies on spermiogenesis, and spermatogenesis generally, in various avian species are required to considerably enhance knowledge of this phenomenon, contribute to comparative spermatology, provide a basis for appropriate applied studies, and contribute to understanding of phylogeny in this vast order of vertebrates.

Details

Language :
English
ISSN :
2156-5554
Volume :
4
Issue :
3
Database :
MEDLINE
Journal :
Spermatogenesis
Publication Type :
Academic Journal
Accession number :
26413401
Full Text :
https://doi.org/10.4161/21565554.2014.959392