freediver wrote on May 31
st, 2013 at 7:48pm:
Quote:Cats are not 'great predators of marsupials', or birds. That's not to say they never kill them, but rodents are their niche market.
What about Lizards? There were countless bird and marsupial species in Australia and other new world countries that are no extinct because of cats.
Quote:Note, the feral animals that compete with native animals for the same foods are the threat.
Nothing even comes close to cats.
Quote:Cats have lived in Australia almost as long as dingoes.
Crap.
Quote:So why has the cat got such a reputation in Australia? Classic scapegoating!
No. It's because of informed scientific opinion.
Cats are reckoned to have arrived on the North West coast of Australia from dutch shipwrecks in the 1700's, though many believe it happened during the 15thC via Indonesia.
As I've pointed out there's no case for subscribing extinctions of animals at and above the size and ferocity of Western Ringtailed possums to cats.
So here's a fair list of extinct Australian animals.
http://www.australianfauna.com/status/extinctmammals.phpLet's take one example the Short-tailed Hopping Mouse (Notomys amplus), sounds like an ideal candidate to blame on the cat right?
http://en.wikipedia.org/wiki/Short-tailed_hopping_mouseSure enough this exresident of Charlotte Waters, (near Alice springs) has its demise attributed to cats, foxes and 'habitat alterations'. The info attributed to Tim Flannery no less.
Now the last known mice specimens were seen in 1896. Foxes were introduced in 1845 to Sydney and Melbourne. They spread quickly following the trail along the coast of the rabbit explosion. It would've taken some extremely enterprising foxes to have headed directly into the desert in the hope of eradicating hopping mice. Not impossible though.
But wait, could there be some other factors at work here? For example what other predators could have helped? Eagles and hawks for a start, armed with bifocal eyes that can spot a mouse from a kilometre away, talons and a ripper beak, hhmmmm not a bad predator of mice you'd think. Then there's Dingos, snakes, lizards... so what special armanents did the fox and cat bring to the war on hopping mice?
And what defence did hopping mice have? I mean with natural predators easily as ferocious as any intoduced they must've had SOMETHING? Well size for a start, it takes energy to catch and if the catch doesn't represent much of a profit why bother? Then there's camouflage, but mostly it's down to numbers. when numbers fall to a level where bumping into them is unlikely, predators look elsewhere or die.
Makes no differ whether the predator is a perenti or a cat. So what happened to the habitat hmmmm? Well one thing we know is that the Overland Telegraph Line went through the area in 1872 and a permanent repeater station was left manned in Charlotte and that meant a station master, four operators and a linesman. We know that every tree for miles was used to support the line and that crew needed what was left for warmth and cooking. What did they eat? Did they have stock?
No no, it gets too hard, let's just say the cats did it