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Harlequin ladybugs escape enemies while native species succumb

Harlequin ladybugs escape enemies while native species succumb

The astonishing success of the alien invasive harlequin ladybird in Britain has given a team of scientists a unique opportunity to investigate a key ecological theory — the Enemy Release Hypothesis. The Enemy Release Hypothesis predicts that when a new alien species arrives into a country or region it is unlikely that the resident natural […]

Researchers revise Darwin’s thinking on invasive species

Researchers revise Darwin’s thinking on invasive species

For more than a century and a half, researchers interested in invasive species have looked to Charles Darwin and what has come to be called his «naturalization conundrum.» If an invader is closely related to species in a new area, he wrote in his landmark The Origin of Species, it should find a more welcoming […]