Especies animales invasoras: el sapo gigante

Australia, isolated from other land masses, has faced challenges from invasive species since British colonization. The South American giant toad, introduced in 1935 to control beetles in sugarcane plantations, became a major invasive species. Unable to climb reeds, the toads spread uncontrollably, affecting over 1,000,000 square kilometers. Their adaptability and high reproduction rates have displaced native species and disrupted ecosystems. The invasion highlights the fragility of ecosystems and the impact of altering small elements.

Why was the South American giant toad introduced to Australia in 1935?

• To replace native amphibians in their habitats

• To control the population of native beetles in sugarcane plantations

• To increase biodiversity in Australian ecosystems

• To serve as a new food source for native predators

What characteristic of the giant toad has contributed to its status as an invasive species in Australia?

• Its adaptability to various environments

• Its reliance on human intervention for survival

• Its ability to fly

• Its preference for cold climates

How many eggs can a female giant toad produce at one time?

• 10,000

• 20,000

• 35,000

• 50,000

What is one of the main ecological impacts of the giant toad in Australia?

• It has driven native amphibians from their traditional habitats

• It has reduced the number of invasive plant species

• It has increased the population of native amphibians

• It has improved the health of freshwater ecosystems

Which native species are most affected by the giant toad invasion?

• Dingoes and wallabies

• Kangaroos and koalas

• Monitor lizards, frogs, and snakes

• Eucalyptus trees and shrubs