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The Intrinsic Origin of Bioluminescence in the Ascidian, Clavelina miniata

Masakazu Aoki, Koichiro Hashimoto and Hiroshi Watanabe
Biological Bulletin
Vol. 176, No. 1 (Feb., 1989), pp. 57-62
DOI: 10.2307/1541889
Stable URL: http://www.jstor.org/stable/1541889
Page Count: 6
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The Intrinsic Origin of Bioluminescence in the Ascidian, Clavelina miniata
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Abstract

Bioluminescence was observed in the ascidian, Clavelina miniata (Tunicata: Ascidiacea). This is the first report of luminescence in ascidians. A green light was evoked by mechanical stimulation, by increasing the concentration of K+ ions, or by hypotonic conditions. The source of the light was a type of tunic cell (cell type II). This luminescence is attributed to an intrinsic system, not to bacterial symbionts.

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