First, the author points out that by using a nationwide fence the spreading of the cane toad can be stopped. The article mentions that this kind of method was used in Australia in the past to prevent the spread of rabbits. The lecturer challenges this point. She says that this method will not be successful in the case of cand toad as their eggs are found in rivers and streams, and
sooner or later water from one side of the fence will flow into the other side. Furthermore, she argues that it only takes only a few cane toads to establish the population inside the fence.
Secondly, the author contends that by capturing and destroying young toads and cane toad eggs the population can be controlled as they are only restricted to water. The lecturer rebuts this. She suggests that as many native frogs will be endangered in this way because it is difficult to distinguish among young frogs.
Finally, the article states a disease-causing virus can be used to eliminate the toad population which will not harm other amphibian species. The lecturer, on the other hand, posits that this virus may have serious impacts on the population of the cane toads in Central America where they are a native species and play a vital role in the ecosystem.