Sapos de caña

In 1935, cane toads were introduced to Australia from Hawaii to control beetles affecting Queensland's cane crops. This biological control method failed as the toads did not consume the beetles and instead caused ecological harm by preying on native species and poisoning predators. The toad population exploded, leading to a significant ecological disaster. Efforts to manage the invasion have been largely unsuccessful, with cane toads now widespread across Western Australia.

Why were cane toads introduced to Australia in 1935?

• To control the population of beetles in sugar cane fields

• To increase the biodiversity of the region

• To serve as a new food source for native predators

• To replace native amphibians

What was the main reason cane toads failed to control beetles in Australia?

• The beetles migrated to a different region

• The beetles were immune to the toads' venom

• The cane fields were too long for the toads to reach the beetles

• The toads were not interested in eating beetles

How did the spread of cane toads affect Australia's native amphibians?

• The toads helped increase their population

• The toads had no impact on them

• The toads competed with them for food, leading to their decline

• The toads provided a new food source for them

What is a significant threat posed by cane toads to Australia's native predators?

• They destroy the habitats of native predators

• Their venomous skin is deadly to predators that try to eat them

• They carry diseases that affect native predators

• They consume all the available water resources

What is the current status of the cane toad population in Australia?

• Their numbers are decreasing due to successful control measures

• They have migrated back to Hawaii

• They have been completely eradicated

• Their population continues to grow with little control