why are pythons an invasive species in the everglades
Burmese pythons in Florida The Burmese pythons in Florida are classified as an invasive species in the area. Invasive species disrupt the introduced ecosystem by preying on native species, outcompeting native species for food or other resources, and/or disrupting the physical nature of the environment.[7] Several life history traits of Burmese pythons characterize them as a particularly successful invasive species. Because of their large size, and as a nonnative species, adult Burmese pythons have few predators within Florida, apart from alligators and humans. Although hatchlings have an increased likelihood of being preyed upon, they are comparable in size or even larger than adult native snake species and quickly reach sizes that reduce their vulnerability to predation.[8]
Wildlife of Madagascar Madagascar's isolation from other land masses throughout the Cenozoic Era has led to the evolution of a large proportion of endemic animal species and the absence of many taxa found on neighboring continents. Some of Madagascar's animals appear to represent lineages that have been present since the breakup of Gondwana, while many others, including all of the nonflying native mammals, are descendants of ancestors that survived rare rafting or swimming voyages from Africa (likely aided by currents).[7][8] As of 2012 it has over 200 extant mammal species, including over 100 species of lemurs, about 300 species of birds, more than 260 species of reptiles, and at least 266 species of amphibians. The island also has a rich invertebrate fauna including earthworms, insects, spiders and nonmarine molluscs.