"The population as a whole didn't show a preference to turn one way or the other," said Mr Roche. "However, at an individual level, some fish showed a turning preference, with parasitised fish showing ...

Parasitised larvae exploited significantly (p < 0.005) fewer feeding patches on excised leaves compared with unparasitised larvae in 2, 6 and 24 hour-long experiments (Fig. 1A). Similarly, reduced ...