Skip to main content
Log in

The ship-fouling algaEctocarpus

II. Ultrastructure of the unilocular reproductive stages

  • Published:
Protoplasma Aims and scope Submit manuscript

Summary

The unilocular reproductive stages of the brown algaEctocarpus have been examined with the electron microscope. One observation in particular, which is believed to have been made for the first time in Phaeophycean studies, is that the zoospore derived from unilocular sporangia possesses a microanatomy considerably different from that of spores formed by plurilocular sporangia. It is suggested that this difference may have an evolutionary significance and may lead to a better understanding of the life cycle ofEctocarpus.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  • Baker, J. R. J., andL. V. Evans, 1973: The ship-fouling algaEctocarpus. I. Ultrastructure and cytochemistry of plurilocular reproductive stages. Protoplasma77, 1–13.

    Google Scholar 

  • Bråten, T., 1971: The ultrastructure of fertilization and zygote formation in the green algaUlva mutabilis Føyn. J. Cell Sci.9, 621–636.

    Google Scholar 

  • Evans, L. V., 1970: Electron microscopical observations of a new red algal unicell,Rhodella maculata, Gen. Nov., sp. nov. — Br. phycol. J.5, 1–13.

    Google Scholar 

  • —, andA. O. Christie, 1970: Studies on the ship-fouling algaEnteromorpha. Aspects of the fine-structure and biochemistry of swimming and newly-settled zoospores. Ann. Bot.34, 451–466.

    Google Scholar 

  • Greenwood, A. D., 1959: Observations on the structure of the zoospores ofVaucheria II. J. exp. Bot.10, 55–68.

    Google Scholar 

  • Hoffman, L. R., andI. Manton, 1963: Observations on the fine structure ofOedogonium. II. The spermatozoid of O.cardiacum (Hass). Wittr. Amer. J. Bot.50, 455–463.

    Google Scholar 

  • Knight, M., 1929: Studies in theEctocarpaceae. 2. The life-history and cytology ofEctocarpus siliculosus Dillw. Trans. R. Soc. Edinb.56, 307–333.

    Google Scholar 

  • Manton, I., 1957: Observations with the electron microscope on the internal structure of the zoospore of a brown alga. J. exp. Bot.8, 294–303.

    Google Scholar 

  • —, 1964: A contribution towards understanding of “The primitive fucoid”. New Phytol.63, 244–254.

    Google Scholar 

  • —, andB. Clarke, 1955: Observations with the electron microscope on the internal structure of the spermatozoid ofFucus. J. exp. Bot.7, 416–432.

    Google Scholar 

  • Müller, D. G., 1966: Studies on the life-cycle of the brown algaEctocarpus siliculosus from Naples, Italy. Planta68, 57–68.

    Google Scholar 

  • —, 1967: Generationswechsel, Kernphasenwechsel und Sexualität der BraunalgeEctocarpus siliculosus im Kulturversuch. Planta75, 39–54.

    Google Scholar 

  • Northcote, D. H., 1971: The Golgi apparatus. Endeavour30, (109), 26–33.

    Google Scholar 

  • —, andJ. D. Pickett-Heaps, 1966: A function of the Golgi apparatus in polysaccharide synthesis and transport in the rootcap cells of wheat. Biochem. J.98, 159–167.

    Google Scholar 

  • Papenfuss, G. F., 1935: Alternation of generations inEctocarpus siliculosus. Bot. Gaz.96, 421–446.

    Google Scholar 

  • Taylor, D. L., 1969: Identity of zooxanthellae isolated from some PacificTridacnidae. J. Phycol.5, 336–340.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Baker, J.R.J., Evans, L.V. The ship-fouling algaEctocarpus . Protoplasma 77, 181–189 (1973). https://doi.org/10.1007/BF01276756

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01276756

Keywords

Navigation