Why does australia have unique fauna




















This separate evolution has resulted in some unusual Australian animals and is the reason why Australian native animals are so different from those found elsewhere in the world. Koalas live in eucalyptus tree branches and can sleep up to hours a day. While most Australian states prohibit koala cuddles, you can have this once-in-a-lifetime opportunity at three Australian states.

There are 55 different native species of kangaroos and wallabies — a smaller species of kangaroo. In their natural habitat, you will spot a kangaroo roaming the grassy areas of the bush, on beaches across the Australian coastline, or hopping across the red sand in the iconic Aussie outback plains.

In some wildlife sanctuaries, you may be able to pat and feed them. Dingos are wild dogs that are found across most of mainland Australia. For a personal dingo encounter, just south of Sydney at Symbio Wildlife Park , you can play around with adults and pups.

Near Melbourne, you can make a dingo date at the Moonlit Sanctuary. Wombats may be difficult to spot during the day, as these rotund little creatures emerge at dusk. Platypuses love to live in riverbanks and can be very difficult to spot, as they are quite shy. Your best chance to see them is in the wild. Kookaburras are social birds best known for their distinctive laugh. You can see or hear them in most Australian woodlands. All locations have big trees for kookaburras to call their own.

Australia is home to two unique crocodile species, the freshwater and the saltwater crocodile, known as salties. Take a mid-to-late afternoon guided tour. The best place to glimpse Tasmanian devils in the wild is while driving around Tasmania. This protected species mainly eats small reptiles, turtles, fish and wading birds, including taking wild pigs and livestock — cattle and horses.

In Australia, there has been an average of This can result in severe pain, heart failure, and, if untreated, death. Luckily, an anti-venom was invented in the late s.

This mollusc, the size of a golf ball, is one of the most toxic venoms on the planet. Its bites cause paralysis, numbness, muscular weakness within minutes, leading to respiratory issues and heart failure. The Eastern and Western Brown Snakes have been responsible for the most reported deaths annually in Australia.

Their venom ranks as the second most toxic of any land snake in the world. A bite can cause paralysis and blood clotting disorders, however, there is an anti-venom that can reverse this. Very few species of Lepidoptera, the insect order which includes all butterflies and moths, have scaleless, transparent wings. Coloured wings can serve many functions, including communication, defence, thermoregulation, feeding, and waterproofing.

So why the transparent wings? Over 80 years ago the last Thylacine sadly died at Hobart Zoo. It earned its more common name at the time, Tasmanian Tiger, because of the distinctive tiger-like stripes along its lower back and tail. In fact, this was no tiger or Tasmanian Wolf, as it was also known, but a marsupial and therefore not closely related to cats or dogs at all.

It had the characteristic pouch of other Australian national treasures such as the wombat, koala and kangaroo. In most marsupial species, only females possess pouches, which they use to suckle and protect their young. Oddly enough, Thylacine males had pouches too. It acted like a protective sheath to cover their external reproductive organs when running through thick bush.

The Thylacine had strong hind legs which were longer than its front legs. It also had a strong stiff tail similar to that of a kangaroo. This, together with its rigid tail, gave the Thylacine a stiff awkward walk not suitable for sprinting. What is really unusual, is that it could stand upright on its hind legs with its tail acting as a tripod support, just like a kangaroo!

It could hop short distances which was its quickest form of getaway when it was frightened or alarmed. You can help us conserve our precious lands and waters. Our planet is currently experiencing the worst wave of species die-offs since the loss of the dinosaurs 65 million years ago. And here in Australia,86 of our native flora and fauna species now critically endangered.

We're running a real risk of losing some of our most iconic species forever. Habitat destruction, introduced species and urban expansion threaten the survival of our native species. Australia's geographical isolation has meant that most of our animals have evolved separately from animals in many other parts of the world. The result is a number of unique animal groups with some very curious ways of surviving in in the Australian environment.

Since European settlement and introduced predators, hundreds of species have become extinct in Australia. Today, nearly 1 in 3 of our unique mammals is at risk of extinction! The clock is ticking for the vulnerable Greater Bilby. Close Enter the Nature Photo Contest! Back To Top. Pellucid Hawk Moth Very few species of Lepidoptera, the insect order which includes all butterflies and moths, have scaleless, transparent wings.

Around million years ago this super-continent broke up into two continents — Laurasia and Gondwana. When this separation took place monotremes and marsupials were the predominant mammals of the Gondwana region and placental mammals in Laurasia. Fossil evidence suggests that a vast forest stretched across Gondwana, all the ways from south-eastern Australia, through Antarctica, and into southern South America, and all three types of mammals existed in this forest.

The breakup of Gondwana occurred in stages. About million years ago, in the Jurassic Period , the western half of Gondwana which included Africa and South America separated from the eastern half which included Madagascar, India, Australia, and Antarctica.

Initially, Australia and Antarctica slowly drifted southwards, far away from all the other continents, and became completely isolated from the rest of the world by vast oceans. The other continents, however, stayed relatively close to each other, and over time collided or joined parts of the old Laurasia landmass. When these landmasses came together monotremes and marsupials were unable to compete with the more advanced placental mammals and became mostly extinct.

In Africa and India marsupials became completely extinct. When South America joined North America almost all the marsupials there also vanished and were replaced by placental mammals. Australia, meanwhile, slowly separated from Antarctica and drifted on its own in a vast ocean — isolated from the rest of the world. The animals and plants which were originally on the Australian landmass no longer had contact with creatures from other parts of the world and continued to evolve independently.

The climate also changed, becoming drier and more arid. Monotremes and marsupials, with their less demanding reproductive systems, were more suitable for this new environment and became the dominant animals in Australia.

What remaining placental animals in Australia slowly became extinct. This separate evolution has resulted in some unusual Australian animals. This is why Australian native animals are so different from those found elsewhere in the world.

Australia's long isolation from the rest of the world has allowed its animals to evolve separately from those in other parts of the world, but to fill similar niches in the environment.

For example, the echidna is an Australian anteater. The Tasmanian tiger now extinct was a marsupial wolf. The existence of similar animals in different parts of the world is referred to as " Parallel Evolution ".

About 90 percent of the mammals , 70 percent of the birds , 88 percent of the reptiles and 94 percent of the frogs, in Australia, are found nowhere else on earth. There are three types of mammals in Australia today. These are monotreme, marsupial, and placental mammals.



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