Human travel and transport has resulted in the introduction of several ‘invasive’ species to new global locations. In one instance, trade routes across Europe have moved freshwater crustaceans from the Ponto-Caspian region (Ukraine/western Russia/etc.) to lakes and rivers across Poland, Germany, France and more. The “tank shrimp” Pontogammarus robustoides, is one such invasive species – it has significant impacts on the ecosystems that it invades. In this case, we conducted a parasitological screening study to look for diseases that this amphipod might carry. We found a huge range of new parasites, from viruses and bacteria to large worms and other parasites. Now that we know of these parasites, we can consider their potential risk to new ecosystems if this species makes it way to other sites, potentially including the invasion of the UK, following in the footsteps of the killer and demon shrimp.
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