(Contribution from the Marine Laboratory, University of Miami) 



THE ORIGIN AND DISTRIBUTION OF NITROGEN IN TEREDCf'- 



by Reuben Lasker 



Abstract 



The amino acid content of acid-hydrolyzed Teredo b artsch i Clapp of all 

 ages has been compared chromatographic ally with hydrolysates of pine 

 wood and of nannoplankton. 'food appears to be deficient in the aromatic 

 amino acids phenylalanine and tyrosine, in the heterocyclic amino acid 

 proline, and in valine, all of which are found in Teredo . Hydrolysates 

 of nannoplankton contain all of these missing amino acids except phenylala- 

 nine. It is suggested that both virood and suspended nannoplankton are 

 used as dietary sources of nitrogen by Teredo . 



■K-This paper has been presented to the Editors of the Biological Bulletin 

 for publication. 



Q - 1 



