Parasitic worms sniff out their victims as 'cruisers' or 'ambushers'

It has been speculated that soil-dwelling parasitic worms use their sense of smell to find suitable hosts for infection. Research published on August 14th in PLOS Pathogens comparing odor-driven behaviors in different roundworm species reveals that olfactory preferences reflect host specificity rather than species relatedness, suggesting that olfaction indeed plays an important role in host location.

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