March 2010

Encounters

Shane Maloney and Chris Grosz

600 Million Rabbits & Myxomatosis

Words: Shane Maloney | Illustration: Chris Grosz

Rabbits are poor conservers of energy. They can’t adapt to drought. Their diet is not diverse. All in all, they are not well suited to the Australian environment. But when it comes to reproduction they can’t be bettered. Mating takes 30 seconds, courtship included. In a single year, one doe can generate as many as 100 rapid-rooting offspring.

By 1950, the number of rabbits in Australia had reached 600 million. They devoured pastures and crops, ringbarked trees and spread erosion with their burrows. Shooting, poisoning, blasting, gassing, trapping, fencing, using ferrets or foxes and turning them into hats had all failed to make the slightest impact on their Malthusian multiplication.

Biological weapons were tested and failed. In 1888, Louis Pasteur sent a team from Paris armed with chicken cholera. It didn’t work. Myxomatosis, a pox from South America, was proposed in 1919. The government rejected the idea on the grounds that it “wouldn’t work”.

Eventually, the CSIRO decided to give it a shot. In May 1950, a myxo-infected bunny was released at Gunbar in the Riverina. Through the winter, members of the wild- life research section tracked the progress of the virus. In August, they returned to Canberra “despondent, cold and wet”. The disease worked in the warrens where it was introduced, but it didn’t appear to spread.

Three weeks later, a case was reported in Corowa, more than 200 kilometres from Gunbar. By summer, it was in Queensland, spreading so fast the scientists couldn’t keep up. The initial mortality rate was 99.5%. The smell of rotting flesh was everywhere in the bush. Within a year the rabbit population had dropped to 100 million.

The virus was spread by mosquitoes. So, too, was Murray Valley encephalitis, a virus potentially fatal to humans. It was a wet year, 1950, and there were a lot of mozzies. When people started dying, the CSIRO was blamed. To allay public concern, Australia’s most prominent scientists, Dr McFarlane Burnet, Prof. Frank Fenner and Dr Ian Clunies Ross, had themselves injected with myxoma.

Within five years, the small number of resistant and immune rabbits had become a large number of resistant and immune rabbits. The “accidental” release of calicivirus in 1995 again reduced Australia’s rabbit population but the impact eventually began to wear off.

The Foundation for Rabbit-Free Australia promotes the Easter Bilby as an alternative to the Easter Bunny. Also known as the rabbit-eared bandicoot, the bilby is a marsupial omnivore known to eat baby rabbits. CSIRO scientists also invented Aerogard and Softly.

Shane Maloney and Chris Grosz

Shane Maloney is a writer and the author of the award-winning Murray Whelan series of crime novels. His 'Encounters', illustrated by Chris Grosz, have been published in a collection, Australian Encounters.

Chris Grosz is a book illustrator, painter and political cartoonist. He has illustrated newspapers and magazines such as the Age, the Bulletin and Time.

Cover: March 2010

March 2010

From the front page

Pub Test: Bad News for Turnbull

Media moguls did not knife the PM, his party did

Paul Feig’s sophisticated ‘A Simple Favour’

This camp study of sociopathy is far from simple

Image of Ancestral Spirit Beings Collecting Honey, 1985-87

‘John Mawurndjul: I Am the Old and the New’ at the MCA, Sydney

The celebrated bark painter’s ethos guides this retrospective exhibition

In The Big House

The quintessential American cultural experience is still college football


In This Issue

Illustration by Jeff Fisher.

Good Neighbours

Illustration by Jeff Fisher.

Close at hand

‘Important Artifacts and Personal Property from the Collection of Lenore Doolan and Harold Morris, Including Books, Street Fashion and Jewelry’ by Leanne Shapton

Illustration by Jeff Fisher.

Ghost writers


More in Encounters

Words: Shane Maloney | Illustration: Chris Grosz

Rupert Murdoch & Kamahl

Mark Oliphant & J Robert Oppenheimer

John Monash & King George V

John Howard & Uri Geller


Read on

Paul Feig’s sophisticated ‘A Simple Favour’

This camp study of sociopathy is far from simple

Image of Vincent van Gogh’s ‘Portrait of Joseph Roulin’

‘MoMA at NGV: 130 Years of Modern and Contemporary Art’

An eye candy-laden, educational treasure hunt of an exhibition

Image of Malcolm Turnbull and Peter Dutton

Turnbull fires back

Unlike Tony Abbott, Malcolm Turnbull never promised ‘no wrecking’

Image from ‘In Fabric’

Toronto International Film Festival 2018 (part one)

A British outlier and a British newcomer are among the stand-outs in the first part of the festival


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