By Tommy Leung | March 28, 2014 01:47am ET
This article was originally published at The Conversation.The publication contributed the article to Live Science's Expert Voices: Op-Ed & Insights.
Alien species become invasive when their introduction to an ecosystem ends up causing ecological disruption in their new home. Cane toads, rabbits, water hyacinth, and zebra mussels are all infamous examples. Often these creatures are introduced to get rid of “pests”.
Now a “killer shrimp,” Dikerogammarus villosus, has become a nuisance in Europe. But new research shows that thanks to a little parasite, the killer shrimp has caused much less havoc than it might otherwise have been capable of.
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