Nuclear morphogenesis and the role of the manchette during spermiogenesis in the ostrich (Struthio camelus)

Journal of Anatomy
J T Soley

Abstract

Nuclear condensation during spermiogenesis in the ostrich follows the basic pattern established in other vertebrates. The fine granular nuclear substance of early spermatids is gradually replaced by numbers of coarse dense granules which appear to arise by aggregation of smaller dispersed elements of the chromatin. The granules increase in size and eventually coalesce to form the compact homogenous mass of chromatin typical of the mature sperm. In ostrich spermatids, however, the aggregation of the nuclear material produces large numbers of longitudinally oriented rod-shaped structures in addition to some granular material. Although fibrillar chromatin has been observed during spermiogenesis in a number of vertebrate species, the hollow nature of the rod-shaped chromatin granules in ostrich spermatids is a unique phenomenon. The spiralisation of the chromatin material observed in ostrich spermatids and in some other nonpasserine birds is possibly related to the reduction in nuclear length demonstrated during spermiogenesis in these species. In common with other nonpasserine birds, spermiogenesis in the ostrich is characterised by the appearance both of a circular and a longitudinal manchette. The circular manchette consists of ...Continue Reading

References

Jan 1, 1975·Cell and Tissue Research·E B Lyke, E A Robson
Feb 1, 1978·The American Journal of Anatomy·Y Clermont, A Rambourg
Jun 1, 1975·Developmental Biology·D W Fawcett
Mar 1, 1976·Journal of Ultrastructure Research·D M Phillips
May 1, 1990·The American Journal of Anatomy·M L MeistrichL D Russell
Mar 1, 1989·The Anatomical Record·D M Phillips, C S Asa
Mar 1, 1988·Biology of Reproduction·A ColeP K Trostle-Weige
Mar 1, 1988·The Anatomical Record·C S Asa, D M Phillips
Oct 1, 1970·The American Journal of Anatomy·F R Susi, Y Clermont
May 1, 1972·Journal of Ultrastructure Research·M Gordon
Sep 1, 1972·Journal of Ultrastructure Research·J B Rattner
Jun 1, 1973·Journal of Ultrastructure Research·J B Rattner, G Olson
Sep 1, 1974·The Journal of Cell Biology·D M Phillips
Oct 1, 1971·Developmental Biology·D W FawcettD M Phillips
Oct 1, 1969·The Anatomical Record·D W Fawcett, D M Phillips
Aug 1, 1970·The Journal of Cell Biology·F R Turner
Nov 1, 1966·Archivum Histologicum Japonicum = Nihon Soshikigaku Kiroku·G Yasuzumi, T Sugioka
Sep 1, 1967·The American Journal of Anatomy·A W Clark
Oct 1, 1967·The Journal of Cell Biology·J R McIntosh, K R Porter
Jun 1, 1984·The Anatomical Record·K L Goodrowe, E Heath
Oct 1, 1982·The American Journal of Anatomy·M J Irons, Y Clermont
Aug 1, 1982·Poultry Science·R J ThurstonD P Froman
Apr 1, 1982·The Anatomical Record·M J Irons, Y Clermont
Jan 1, 1980·Cell and Tissue Research·T A AireJ S Ayeni
Jul 25, 1955·The Journal of Biophysical and Biochemical Cytology·M H BURGOS, D W FAWCETT
May 25, 1956·The Journal of Biophysical and Biochemical Cytology·M H BURGOS, D W FAWCETT
Jul 25, 1958·The Journal of Biophysical and Biochemical Cytology·M L WATSON
Jan 1, 1958·Zeitschrift für Zellforschung und mikroskopische Anatomie·J R SOTELO, O TRUJILLO-CENOZ
Nov 1, 1961·The Anatomical Record·A TELKKAA K CHRISTENSEN

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Citations

Feb 19, 2003·Research in Veterinary Science·T A AireH B Groenewald
May 28, 2013·BMC Evolutionary Biology·Lizette du Plessis, John T Soley
Dec 23, 2015·Micron : the International Research and Review Journal for Microscopy·Justin L RheubertKevin M Gribbins
Mar 28, 2009·Micron : the International Research and Review Journal for Microscopy·I M S GracielleS N Báo
Sep 15, 2005·Anatomia, histologia, embryologia·K SimõesK A S Viegas
Jul 24, 2012·Journal of Morphology·Erica M LovasStephen D Johnston
Nov 4, 2009·Journal of Morphology·Carles G SimeóEnric Ribes
Sep 29, 2015·Spermatogenesis·Tom A Aire
Oct 11, 2016·Tissue & Cell·Lizette du Plessis, John T Soley
Nov 26, 2010·Molecular Biology Reports·Xiao SunWan-Xi Yang
Oct 14, 2020·Zygote : the Biology of Gametes and Early Embryos·Yi YuShenmin Yang
Nov 20, 2020·Tissue & Cell·Narindra H RoopnarineTom A Aire
Apr 22, 2021·Physiological Reviews·Maria Eugenia Teves, Eduardo R S Roldan

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