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Smithsonian Science How Webcast

Living Together - Parasites and Hosts

In this video, zoologist Dr. Anna Phillips shares the importance of parasites and how they relate to their hosts.


Meet Dr. Anna Phillips, a zoologist at the National Museum of Natural History. Did you know that parasites are some of the most abundant members of ecosystems? They make up as much as 60 percent of the biomass, and have complex relationships with the host organisms they depend on. See what Anna discovers from studying how parasites such as leeches and tapeworms relate to their hosts. Consider the significant roles parasites play in our lives and the ecosystems we inhabit. Gain a new perspective on parasites. This show aired May 19, 2016.



National Middle School Standards

Next Generation Science Standards (NGSS)

Life Science


Ecosystems: Interactions, Energy, and Dynamics
  • MS-LS2-1Analyze and interpret data to provide evidence for the effects of resource availability on organisms and populations of organisms in an ecosystem.
  • MS-LS2-2Construct an explanation that predicts patterns of interactions among organisms across multiple ecosystems.
  • MS-LS2-4Construct an argument supported by empirical evidence that changes to physical or biological components of an ecosystem affect populations.
Earth Science


Earth and Human Activity
  • MS-ESS3-4Construct an argument supported by evidence for how increases in human population and per-capita consumption of natural resources impact Earth's systems.

All Q?rius Resources for These Standards

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