Chesapeake Science

, Volume 12, Issue 3, pp 173–178 | Cite as

Gregarious setting in the American oysterCrassostrea virginica Gmelin: I. Properties of a partially purified “Setting factor”

  • F. P. Veitch
  • Herbert Hidu


A substance which stimulates the gregarious setting of oyster larvae has been partially purified. This material, which is present in the oyster shell liquor, is a protein of molecular weight in excess of 100,000 Daltons. Thyroxine, and possibly 3,5-diiodotyrosine and 3-iodotyrosine are freed by enzymatic or alkaline hydrolysis of the protein. These same substances are associated with the biological activity as they too will stimulate setting of larvae, although much higher concentrations are necessary for activity comparable to that of the conjugate protein.


Thyroxine Crassostrea Virginica Glass Distil Water American Oyster Chesapeake Biological Laboratory 
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Copyright information

© Estuarine Research Federation 1971

Authors and Affiliations

  • F. P. Veitch
    • 1
  • Herbert Hidu
    • 2
  1. 1.Department of ChemistryUniversity of MarylandCollege Park
  2. 2.Chesapeake Biological LaboratorySolomons

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