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Science 15 August 1975:
Vol. 189. no. 4202, pp. 570 - 571
DOI: 10.1126/science.189.4202.570
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Articles

Sea Anemone with Zooxanthellae: Simultaneous Contraction and Expansion in Response to Changing Light Intensity

William B. Gladfelter 1

1 West Indies Laboratory, P.O. Annex 4010, C'sted, St. Croix, Virgin Islands 00820

Under increasing intensity of light, the normal tentacles of Lebrunea contract whereas the pseudotentacles expand; in decreasing light the reverse is true. This behavior may be correlated with greater numbers of zooxanthellae in the pseudotentacles. Simultaneous but opposite response of parts suggests adaptations toward photosynthesis by day and predation by night.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Photobehavior of stony corals: responses to light spectra and intensity.
O. Levy, Z. Dubinsky, and Y. Achituv (2003)
J. Exp. Biol. 206, 4041-4049
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Science. ISSN 0036-8075 (print), 1095-9203 (online)