Figure 5. Mean number of Symbiodinium cells per polyp at 48 h post inoculation in juvenile recruits of the coral A. millepora inoculated with one of five treatments: laboratory-cultured C1 Symbiodinium at 10², 10⁴ or 10⁶ algal cells ml⁻¹; or freshly-isolated C1 Symbiodinium at 10⁴ cells ml⁻¹; or laboratory-cultured clade D Symbiodinium at 10⁴ cells ml⁻¹.

No Symbiodinium were ever observed in un-inoculated juvenile recruits (i.e., negative control), therefore this treatment is not shown. Error bars show standard error; Greek symbols indicate significant post hoc groupings (Dunn’s multiple comparisons test, P < 0.05) (n = 16 to 24 juveniles per treatment).