The effect of geographic origin on interactions between adult invasive green crabs carcinus maenas and juvenile American lobsters Homarus americanus in Atlantic Canada

► Survival of juvenile lobsters in the presence of green crabs varies with crab origin. ► Differential predation by green crabs appears linked to crab invasive history. ► Green crabs also prey differentially on lobsters from different geographic origins. ► Neither crab behaviour nor morphology correlated with predation patterns.