Read more about the article Parasites as drivers and passengers of biological invasions
A classic example of a parasite influencing an invasion is the replacement of the red squirrel (Sciurus vulgaris) by the grey (S. carolinensis) in the UK. The invasion of the grey and severe population decline of the red has been mediated at least in part by parapoxvirus introduced from North America along with the grey squirrels.

Parasites as drivers and passengers of biological invasions

Alien species are a common sight around the world. Yet, the diversity and ubiquity of these species belies the fact that many alien introductions fail to take hold.

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Read more about the article Alien urchin no longer a concern for the West Coast
Shells of the Chilean black urchin, Tetrapygus niger (Photo credit: Clova Mabin)

Alien urchin no longer a concern for the West Coast

It is important that lists of invasive and alien species be updated regularly, but sometimes it can be difficult to decide when a species should be removed

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Skyscrapers and bungalows: the alien species real estate market on Marcus Island

An interesting study by C∙I∙B PhD student, Saachi Sadchatheeswaran, examined the different number of species (species richness) and invertebrates on the rocky shores of Marcus Island after the arrival of alien species that were also ecosystem engineers.

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Where will the Cape frogs go?

Understanding how changes in the climate have influenced the spread of species is important if we want to conserve our most vulnerable species. Part of the answer lies in our ability to make predictions on whether species will be able to track predicted changes in the climate.

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