Read more about the article Australian redclaw crayfish quickly spreading in South Africa and Swaziland
High numbers of Australian redclaw crayfish (Cherax quadricarinatus) caught in a trap in South Africa (Photos by Ana Nunes)

Australian redclaw crayfish quickly spreading in South Africa and Swaziland

A recent study, led by C·I·B Post-doc Ana Nunes, confirms the presence of established and widespread populations of the Australian redclaw crayfish in South Africa and Swaziland.

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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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