Where did the invasive Guttural Toads come from?

Guttural toads (Sclerophrys gutturalis) have been invasive in Mauritius and Reunion for nearly 100 years (since ~1922), and have been in Constantia (near Cape Town) for another 20 years, but where did those colonising toads come from?

Comments Off on Where did the invasive Guttural Toads come from?
Read more about the article How to define alien species?
A conceptual map of the proposed scheme for assessing the biogeographic status of taxa occurring in a regional species pool, showing the four assessment criteria, the levels of uncertainty in assessment, and the resulting assessment outcomes.

How to define alien species?

The human transport of species into new regions where they often become permanent additions to the fauna and flora has become a defining feature of our epoch, the Anthropocene.

Comments Off on How to define alien species?