Impact of Acanthaster planci (Crown of Thorns) Sea Star on Coral Reef Systems René A. Lewis.

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Presentation transcript:

Impact of Acanthaster planci (Crown of Thorns) Sea Star on Coral Reef Systems René A. Lewis

Population and Growth Reproduction Juvenile to adult phase Adult phase

Food Resources and Feeding Patterns Scleractinian corals Body morphology of crown-of-thorns Feeding times/patterns

Healthy vs. Unhealthy Reef

Causes of Outbreaks Human modification of environment Removal of natural predators Nutrient run-off Normal phenomenon

Possible Solutions Injection of chemicals such as formalin, ammonia or copper sulphate Introduction of predator species such as Triton (Charonia tritonis ) Removal by hand

Reef Recovery and Coastal Impacts

The End

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