This Parasite Needs To Ruin Three Lives

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Why do so many parasites, especially helminths aka flatworms, jump around as many as THREE hosts to complete their life cycle? Why isn't one host good enough for them? We'll find out why parasites evolve complex life cycles that don't seem to make any sense.

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#SciShow #science #education #learning #complexly
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Sources:
https://www.researchgate.net/publication/349067328_Parasite_Biodiversity/download
https://onlinelibrary.wiley.com/doi/full/10.1111/evo.14299
https://www.sciencedirect.com/science/article/abs/pii/S1471492219302697
https://royalsocietypublishing.org/doi/full/10.1098/rspb.2014.1462
https://academic.oup.com/evolut/article/75/8/1936/6730303
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679081/

Images:
http://www.weinersmith.com/gallery/
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https://www.gettyimages.com/detail/video/snail-infected-with-parasitic-green-banded-broodsac-stock-footage/1478160450?adppopup=true
https://commons.wikimedia.org/wiki/File:Tyrannosaurus_with_infection.jpg
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