, Volume 53, Issue 3, pp 213-216

Some features of the bioluminescence of the radiolarianThalassicolla sp.

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The luminescence of the solitary radiolarianThalassicolla sp. has a spectral emission maximum at 446±4 nm and the luminescence of crude homogenates can be activated by calcium ions. Electrical stimulation of single individuals frequently causes them to produce repetitive post-stimulus flashing akin to that reported in a number of other marine animals. The possible relationships between the luminescent system ofThalassicolla sp. and of certain coelenterates are discussed.

Communicated by J. Mauchline, Oban