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From: andrewt@cs.su.oz (Andrew Taylor)
Newsgroups: sci.bio
Subject: Re: Ecosystemic Contamination
Message-ID: <577@cluster.cs.su.oz>
Date: 12 Oct 89 02:56:34 GMT
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Sender: news@cluster.cs.su.oz
Reply-To: andrewt@cluster.cs.su.oz (Andrew Taylor)
Organization: Basser Dept of Computer Science, University of Sydney, Australia
Lines: 43

>ORGANISM                             ORIGIN                 INTRODUCED TO
>cane toad				??			australia

Cane toad were introduced to  Australia (not to mention Hawaii and Fiji)
to control insect pests in sugar cane, which they haven't. They are
steadily spreading through Australia from Queensland, the site of their
introduction. Native predators can't control them because they secrete a
potent poison. I haven't heard of any candidate for a biological control.
The best hope is probably that some native predator will learn to eat
only the non-poisonous bits.

Australia has far too many introduced species for me to remember them all
but there is a few below for your list. 

Australia's main contribution to the rest of the world seems to be Eucalypts,
it seems most countries have some Eucalypt species growing wild. They are quite
problem in some places e.g California.

Andrew

Domestic Animals gone wild (feral):
cats*, dogs, cattle, goats, pigs*, horses, donkeys, camels.

Introduced mammals:
House Mouse*, several Rat species*, European Rabbit*, European Hare, Red Fox*,
an assortment of Deer species, Water Buffalo*

Birds:
Domestic Pigeon, Spotted Turtle-Dove, European Starling*, House Sparrow*, 
Red-Whiskered Bulbul, Common Mynah, Mallard, European Goldfinch, Greenfinch

Fish
several Carp species*, European Perch*, several Trout species*, Gambusia*
several tropical aquarium species

Invertebrates:
Garden Snails & Slugs, Honey Bee, European Wasp, several Cockroaches

Plants
Prickly Pear(was *), Lantana*, Bitou Bush*, Blackberry*, several Thistles*
Water Hyacinth, Salvina and many more

* = particularly disasterous