Isolated photophores of Porichthys notatus, maintained in saline at 20 degrees C, do not luminesce and show an oxygen consumption rate of 0.07 +/− 0.01 nmol min-1 photophore-1. In the presence of 10(−6) M-KCN, the photophores do not luminesce but the resting respiration decreases by about 50%. In the presence of 10(−5) M-KCN, some photophores do not luminesce and their respiration rate decreases by about 75%. Others show a response and resting oxygen consumption slowly increases. At high concentration (10(−4) and 10(−3)M), KCN induces a large light emission and increase in oxygen consumption. The stimulatory effect of KCN on the photophore oxygen consumption is tentatively explained by an activation of the luciferin-luciferase system by calcium ions.
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JOURNAL ARTICLE| 01 March 1984
Oxygen consumption and luminescence of Porichthys photophores stimulated by potassium cyanide
Online Issn: 1477-9145
Print Issn: 0022-0949
© 1984 by Company of Biologists
J Exp Biol (1984) 109 (1): 341–352.
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J. Mallefet, F. Baguet; Oxygen consumption and luminescence of Porichthys photophores stimulated by potassium cyanide. J Exp Biol 1 March 1984; 109 (1): 341–352. doi: https://doi.org/10.1242/jeb.109.1.341
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