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Miniature Guttural Toads on Mauritius and Réunion stun researchers

Guttural Toads, native to mainland Africa, were deliberately introduced from Durban to Mauritius in 1922 in an attempt to biocontrol the cane beetle, and from there moved to Réunion in 1927 as a biocontrol of malarial carrying mosquitoes.

Researchers from the DSI/NRF Centre for Invasion Biology at Stellenbosch University have found that, scarcely a hundred years after Guttural Toads were introduced to the islands of Mauritius and Réunion, their overall body size has been reduced by up to a third compared to their counterparts in South Africa.

The lesser of two weevils? How insect thermal traits can help to understand biocontrol success and failure

Neochetina eichhorniae - outstanding in its field.

Water hyacinth (Eichhornia crassipes) is a widespread invasive species impacting a range of ecosystem services in South Africa, especially water quality and availability. To better control this aquatic weed, several biocontrol agents have been released – unfortunately with mixed success.