Parasitism in the Alien Movies

Parasitism in the Alien Movies

What makes the Alien franchise so impactful is how utterly terrifying the titular Aliens are.  These creatures are so grotesque and foreign to audiences, particularly in their reproductive strategy, that fans are simultaneously horrified and fascinated by what is on screen.  Perhaps unknown to many viewers, the lifecycle of Xenomorph XX121 from the films is not so unlike that of many common parasites found on our planet. The rest of this essay will compare the biology of the Xenomorphs to parasitoid wasps and nematomorph worms from Earth to illustrate how close to reality the biology of these aliens is and to discuss this exceptional instance of science inspiring artists.

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