TABLE 1.

Morphological characteristics of the ciliates and their abundances relative to Symbiodinium

Ciliate	Source	Avg size (length by width [μm]) (no. of organisms)	Shape	Motility	Feeding	Mean ratio of Symbiodinium organisms to ciliates ± SD (no. of expts)
						Before culture	After culture
Cil1	Acropora microclados	25.1 ± 4.9 by 9.5 ± 0.8 (9)	Short spindle	Slow	Filter	8.5 ± 3.4 (6)	9.5 ± 10.6 (3)
Cil2	Acropora hyacinthus	98.0 ± 10.7 by 26.0 ± 2.5 (19)	Elongated oval	Rapid	Engulf	106.4 ± 44.8 (4)	0.6 ± 9.4 (3)