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Do dugongs trade food for safety? PowerPoint Presentation
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Do dugongs trade food for safety? - PowerPoint PPT Presentation


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Do dugongs trade food for safety?. Can alteration of dugong behavior be quantified? How? Measuring food density Measuring dugong density Measuring risk. What is the role of tiger sharks as predators?. Scavenging vs. active predation Are tiger sharks the only (or main) predator?

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Presentation Transcript
do dugongs trade food for safety
Do dugongs trade food for safety?
  • Can alteration of dugong behavior be quantified? How?
  • Measuring food density
  • Measuring dugong density
  • Measuring risk
what is the role of tiger sharks as predators
What is the role of tiger sharks as predators?
  • Scavenging vs. active predation
  • Are tiger sharks the only (or main) predator?
  • Few dugongs are known to be eaten – so why would one hypothesize evolution of predator avoidance?
dugong foraging shark density
Dugong foraging & shark density

Solid circles = deep, open circles = shallow for dugongs