. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 789 Larval age (days) 10 11 Figure 7. Effect of symbiotic state on larval settlement. Results from 1996 experiment. Nearly 100% of zooxanthellate planulae underwent settlement and metamorphosis by day 10. whereas most azooxanthellate planulae failed to settle. Each point represents data pooled from six replicate dishes for each treatment. 43 30- 20- kDa. 34567 Larval age (days) Figure 8. Protein profiles and abundance of putative yolk protein in Fungia scutaria larvae. (A) Silver-stained ID SDS-polyacrylamide gel of total pr
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 789 Larval age (days) 10 11 Figure 7. Effect of symbiotic state on larval settlement. Results from 1996 experiment. Nearly 100% of zooxanthellate planulae underwent settlement and metamorphosis by day 10. whereas most azooxanthellate planulae failed to settle. Each point represents data pooled from six replicate dishes for each treatment. 43 30- 20- kDa. 34567 Larval age (days) Figure 8. Protein profiles and abundance of putative yolk protein in Fungia scutaria larvae. (A) Silver-stained ID SDS-polyacrylamide gel of total protein extracted from eggs (lane 2), 1-day-old larvae (lane 3), 6-day-old azooxanthellate larvae (lane 4), and 6-day-old zooxanthellate larvae (lane 5). Each lane contained fig protein. Molecular weight standards in lane 1. Arrow highlights a putative yolk protein doublet (84 and 79 kDa) that is abundant in eggs and 1-day larvae but absent by day 6. (BI Decline in abundance of putative yolk protein through larval develop- ment. The depletion of putative yolk protein corresponded with the onset of settlement on day 7. There was no difference in putative yolk protein abundance in azooxanthellate and zooxanthellate larvae (days 5 and 6): data shown represent the average of the two treatments. the possibility that infection may not occur. However, for planulae dispersed to areas with different environmental conditions, the ability to acquire zooxanthellae from the environment might confer a greater advantage to the host than directly inheriting maternal zooxanthellae. This study found that planulae of F. scutaria were capable of forming an association with members from three clades of zooxan- thellae classified by Rowan and Powers (199la, b); zoo- xanthellae from C. xamachana are in group A, those from A. pallida are in group B, and those from F. scutaria are in group C. The degree to which zooxanthellae from different clades persist in F. scutaria remains to be investigated, bu
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