Summary
The first indication of differentiation of the Jensen's ring has been detected in an early stage of spermiogenesis of Felis catus Linné when the pair of centrioles takes up a position immediately beneath the plasma membrane. The chromatoid bodies appear in the early spermatid cytoplasm through the nuclear pore complex. In a more advanced stage, such bodies have been found in association with the striated columns, the distal centriole or the proximal part of flagellum and the Jensen's ring. As the spermiogenesis proceeds, the bodies have decreased their size and density, and finally disappear in mature spermatozoa. The chromatoid bodies seem, therefore, to share with the centriole the capacity to form the connecting piece. As a consequence of disorganization of triplet microtubules of the centriole, a noticeable material appears in the center of lumen of the centriole to be identifiable as a distinct precursor of the central pair of axonemal complex. Microtubules are first developed as the sheath of principal piece of the sperm flagellum, originating from the plasma membrane surrounding the axonemal complex.
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References
Blom, E., Birch-Anderson, A.: The ultrastructure of the bull sperm. I. The middle piece. Nord. Vet.-Med. 12, 261–279 (1960).
Bloom, W., Fawcett, D. W.: Spermiogenesis. In: A textbook of histology, p. 697–701. Philadelphia-London-Toronto: W. B. Saunders Co. 1968.
Fawcett, D. W.: Structure of the mammalian spermatozoon. Int. Rev. Cytol. 7, 195–234 (1958).
— Ito, S.: The fine structure of bat spermatozoa. Amer. J. Anat. 116, 567–610 (1965).
— Phillips, D. M.: The fine structure and development of the neck region of the mammalian spermatozoon. Anat. Rec. 165, 153–184 (1969).
Gatenby, J. B.: The electron microscopy of centriole, flagellum and cilium. J. roy. micr. Soc. 79, 299–317 (1961).
Jensen, O. S.: Untersuchungen über die Samenkörper der Säugethiere, Vögel und Amphibien. Arch. mikr. Anat. 30, 379–425 (1887).
Nicander, L., Bane, A.: Fine structure of boar spermatozoa. Z. Zellforsch. 57, 390–405 (1962).
Phillips, D. M.: Development of spermatozoa in the woolly opossum with special reference to the shaping of the sperm head. J. Ultrastruct. Res. 33, 369–380 (1970).
Rahlman, D. F.: Electron microscopic study of mature bovine spermatozoa. J. Diary Sci. 44, 915–920 (1961).
Saacke, R. G., Almquist, J. O.: Ultrastructure of bovine spermatozoa. II. The neck and tail of normal, ejaculated sperm. Amer. J. Anat. 115, 163–184 (1964).
Sapsford, C. S., Rae, C. A., Cleland, K. W.: Ultrastructural studies on maturing spermatids and on Sertoli cells in the bandicoot Perameles nasuta Geoffroy (Marsupialia). Aust. J. Zool. 17, 195–292 (1969).
Stanley, H. P.: Fine structure of spermiogenesis in the elasmobranch fish Squalus suckleyi. I. Acrosome formation, nuclear elongation and differentiation of the midpiece axis. J. Ultrastruct. Res. 36, 86–102 (1971).
Werner, G.: On the development and structure of the neck in urodele sperm. In: Spermatologia comparata (edit. B. Baccetti), p. 85–92. Roma: Accademia Nazionale del Lincei 1970.
Yasuzumi, G., Sugioka, T.: Spermatogenesis in animals as revealed by electron microscopy. XXVI. Relationship between development of microtubules and Sertoli cells during spermiogenesis of the lovebird Uroloncha striata var. domestica Flower. J. Submicr. Cytol. (in press).
— Tsubo, I., Yasuzumi, F., Matano, Y.: XX. Relationship between chromatoid bodies and centriole adjunct in spermatids of grasshopper, Acrida lata. Z. Zellforsch. 110, 231–242 (1970).
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Yasuzumi, G., Shiraiwa, S. & Yamamoto, H. Spermatogenesis in animals as revealed by electron microscopy. Z.Zellforsch 125, 497–505 (1972). https://doi.org/10.1007/BF00306656
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DOI: https://doi.org/10.1007/BF00306656