Cell and Tissue Research

, Volume 173, Issue 3, pp 417–421 | Cite as

Water regulation in aestivating snails

Ultrastructural and analytical evidence for an unusual cellular phenomenon
  • P. F. Newell
  • J. Machin
Short Communication


Aestivating snails form abundant lamellate vesicles in the cells of the mantle collar, an epithelium known to regulate the rate at which water is lost from its surface. Since lamellate vesicles are much reduced in hydrated mantle tissue of recently stimulated animals it is tentatively concluded that the vesicles, and their contents, form a barrier to water movement within these cells. X-ray microanalysis of unfixed thin sections shows that there is a concentration gradient of ions within these cells in aestivating animals which is not present in stimulated snails.

Key words

Snails Water regulation Ultrastructure X-ray microanalysis 


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Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • P. F. Newell
    • 1
    • 2
  • J. Machin
    • 1
    • 2
  1. 1.Zoology DepartmentWestfield CollegeLondonEngland
  2. 2.Zoology DepartmentUniversity of TorontoCanada

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