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Biol Bull 121: 449-455. (December 1961)
© 1961 Marine Biological Laboratory
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AMINO ACID SENSITIVITY OF THE DACTYL CHEMORECEPTORS OF CARCINIDES MAENAS

JAMES CASE 1 and G. F. GWILLIAM 1

1 Department of Zoology, University of Iowa, Iowa City, Iowa; Reed College Portland 2, Oregon; Marine Biological Laboratory, Woods Hole, Mass.

1. Dactyl chemoreceptors were electrophysiologically demonstrated in Carcinides maenas, Libinia emarginata, Callinectes sapidus, and Paguris pollicaris.

2. In Carcinides the receptors respond to a boiled dialysate of Mytilus, and to 1-glumatic acid at dilutions in excess of 5.0 x 10-5 M. Derivatives of glutamic acid and other amino acids are less stimulatory.

3. Optical isomers of glutamic acid, aspartic acid and leucine are distinguished by small populations of Carcinides dactyl receptors.






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