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Experientia

, Volume 32, Issue 1, pp 101–102 | Cite as

The fine structure of the conical-headed sperm of the crinoidAntedon bifida

  • N. D. Holland
Specialia

Summary

Scanning- and transmission electron microscopy show that the sperm head ofAntedon bifida is conical and thus different from the spherical sperm head that is typical of crinoids. The head consists of the acrosome and the nucleus. The posterior fibrogranular component of the acrosome is housed in a tubular, axial invagination running from the anterior pole almost to the posterior pole of the nucleus. The middle piece includes a mitochondrion and a pair of centrioles. One of the centrioles is a basal body, which gives rise to the tail flagellum.

Keywords

Microscopy Electron Microscopy Transmission Electron Microscopy Fine Structure Basal Body 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Birkhäuser Verlag 1976

Authors and Affiliations

  • N. D. Holland
    • 1
  1. 1.Division of Marine Biology, Scripps Institution of OceanographyUniversity of California at San DiegoLa JollaUSA

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