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Biol Bull 68: 131-139. (February 1935)
© 1935 Marine Biological Laboratory
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OBSERVATIONS ON THE COLOR CHANGES AND ISOLATED SCALE ERYTHROPHORES OF THE SQUIRREL FISH, HOLOCENTRUS ASCENSIONIS (OSBECK)

DIETRICH C. SMITH 1 and MARGARET T. SMITH 1

1 From the Bermuda Biological Station and the University of Tennessee, Memphis, Tennessee

1. In the common Bermudian squirrel fish, Holocentrus ascensionis (Osbeck), sympathetic pigment-motor fibers can be demonstrated which are capable of altering the state of pigment distribution within the erythrophores.

2. In the denervated trunk erythrophores of Holocentrus an increase in temperature will cause a withdrawal of the pigment into the central body of the cell. Lowering the temperature has the opposite effect. In innervated trunk erythrophores the effect of temperature changes upon the state of pigment distribution of the erythrophore is the reverse of what is seen in denervated erythrophores.

3. Isolated scale erythrophores and xanthophores of Holocentrus show spontaneous pulsations when transferred from sea water to N/10 NaCl. Isolated scale melanophores will not pulsate in NaCl unless previously treated with N/10 BaCl2.






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Copyright © 1935 by the Marine Biological Laboratory.