Abstract

The effects of illumination, feeding regime and endosymbiotic algae on the clonal growth via asexual fission of the intertidal sea anemone Anthopleura elegantissima (Brandt, 1835) were examined in a 6 month factorial laboratory experiment. Neither illumination nor symbionts had a significant effect on fission rate, but anemones fed three times a week divided significantly more often than unfed anemones. This result is the opposite of previously published data, and possible explanations for how food may cue divisions in the field are discussed.

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