. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 229 a model group for studies of the ecology and reproduction of reef-building corals. The major focus of Nancy's spawning study was to provide a comprehensive understanding of the spawning behavior, gamete compatibilities, and fertilization rates of the three species that make up the complex (M. annularis, M. franksi and M. faveolata). All three spawn in approximate synchrony, typically seven to eight days after the full moon in August. However, M. franksi spawns one to two hours before the other two species,
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 229 a model group for studies of the ecology and reproduction of reef-building corals. The major focus of Nancy's spawning study was to provide a comprehensive understanding of the spawning behavior, gamete compatibilities, and fertilization rates of the three species that make up the complex (M. annularis, M. franksi and M. faveolata). All three spawn in approximate synchrony, typically seven to eight days after the full moon in August. However, M. franksi spawns one to two hours before the other two species, and the two species that spawn together have barriers that block fertilization between them. When a "setting" colony (Fig. 11a) was encountered at Bocas del Toro, Panama, a numbered chemical light (attached to a weight with an identification number) was activated to mark the colony. The matched numbers allowed for mapping of the coral colonies and matching them with the fertilization samples. When a colony started to spawn (Fig. lib), the diver recorded the time and detached the chemical light from the weight. The gamete bundles were followed to the surface (off to the side to minimize scuba bubbles interfering with the gamete bundles) and periodically during the ascent a sample of gamete bundles were collected with 60 cc syringes (Fig. lie). The chemical. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Press]
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