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SSI1-165 Never Really Alone: Symbioses and Parasitism Around and Within Us

The Story of a Conquest

Image shows an extreme close up of a dead fly, with the fruiting bodies of a parasitic fungus erupting from the body of the insect.

The story of a conquest. The fruiting body of a parasitic fungus erupts from the body of its victim. Attribution: Roberto García-Roa.

Roberto García-Roa, an evolutionary biologist and conservation photographer affiliated with the University of Valencia (Spain) and Lund University (Sweden), captured this unsettling image in the Peruvian jungle of Tambopata. Roberto explains that “spores of the so-called ‘Zombie’ fungus (e.g. genera Ophiocordyceps) infect arthropods by infiltrating their exoskeleton and minds. As a result, parasitized hosts are compelled to migrate to a more favourable location for the fungus’s growth. Here, they await death, at which point the fungus feeds on its host to produce fruiting bodies full of spores that will be jettisoned to infect more victims – a conquest shaped by thousands of years of evolution.” Senior Editorial Board Member Christy Anna Hipsley comments that this image depicting a parasite-host interaction “has a depth and composition that conveys life and death simultaneously – an affair that transcends time, space, and even species. The death of the fly gives life to the fungus”.

Overall Winner of the 2022 BMC Ecology & Evolution Image Competition

Where can we learn more?

Research Exercise

Take a moment to read through the short description of this amazing photograph, and make note of anything useful that you see as you read, such as:

  • What vocabulary words are new to you?
  • What organisms are mentioned, and do you learn their scientific and/or common names?
  • Do you learn the names of any specific researchers?
  • What facts or information did you learn? 

Then, pick something out from your notes that you want to learn more about, and use one of the three searching options above to look for more information about it. As you search, consider:

  • What search terms are you going to use?
    • How do your search results change when you use different search terms?
  • What types of information sources pop up when you search?
    • How can you tell what kind of source you're finding?
    • How are different sources useful in different contexts?