Researchers from the Stellenbosch University, South Africa, tried to map the invasion history of the Indian bullfrog (Hoplobatrachus tigerinus) from the early 2000s, which was when it was first reported in the islands.
The study from IISc found a previously unidentified yeast-like symbiont inside the lac insect Kerria lacca, which gives the insect its distinctive red colour and, may also provide other nutrients in return for shelter.