Why New Zealand is Killing All Their Rabbits

Rabbit in Ambury Park, Auckland, New Zealand
Rabbit in Ambury Park, Auckland, New Zealand | © russellstreet/Flickr
Thalita Alves

Most people think of rabbits as fluffy, harmless little creatures. In New Zealand, however, they are a bit of a pest – or at least the wild ones are. Because of this, the country is about to release a deadly virus in an attempt to control the burgeoning population numbers wreaking havoc in open pastures and forests.

The virus in question is a haemorragic disease strain known as the RHDV1 K5 – or simply K5 for short. Its nationwide dissemination is already underway, with the South Island’s Otago region being the first to hop into the eradication bandwagon.

So why is the government taking such drastic measures? According to the Ministry of Primary Industries, wild rabbits can lead to a loss of NZ$50 million as far as agricultural production is concerned. Not to mention the fact that it costs some NZ$25 million to eradicate them in the first place.

Rabbit in Ambury Park, Auckland, New Zealand

Rabbits aren’t native to New Zealand. They were introduced around the 1830s and have since competed with livestock for the best grasses and pasture. As you can probably guess, this has historically led to extensive damage to local farmland as well as being an overall nuisance for the farming industry.

Over they years, the main methods of addressing the wild rabbit problem have included shooting, rabbit-proof fencing, burrow fumigation and poisoning. Officials don’t believe these measures are enough to keep the rabbit numbers at bay – which is where the virus infection comes in.

A Czech strain of the Rabbit Haemorrhagic Disease Virus (RHDV) was illegally introduced to New Zealand in 1997 by a group of vigilante farmers. This was an effective population control treatment for a good 20 years or so, before wild rabbits became immune to the strain.

The virus that’s being released now is a newer RHDV variant – this time from Korea. It kills rabbits much faster than its predecessor, with the infection having a finite effect within two to four days.

Wild rabbits

Naturally, many farmers have welcomed the initiative. But people are also concerned about what this could mean for their pet rabbits – will they be at risk from contracting the virus too?

Let’s look at the arguments in favour first. In Otago alone, the K5 strain is expected to eradicate more than 40% of the wild rabbit population. Some even put the figure as high as 80%. A Federated Farmers representative told Radio New Zealand the campaign is a long time coming:
“We were hoping to have it 12 months ago but the application took a lot longer than we anticipated.”
In fact, farmers had been promised the virus would be available in March 2017, but bureaucratic setbacks meant the project had to be put on hold for a year.

The Otago Regional Council contends that K5 only affects wild European rabbits. Still, Rabbit Council of New Zealand member Gary Stephenson, criticises the campaign’s timing, arguing pet owners have not been given enough time to protect their beloved bunnies:
“The pet rabbit population deserves the same care and protections from government and the animal welfare rights [groups] as pet cats and dogs … There are many other means of controlling wild rabbits that do not threaten pet rabbits or treat pet rabbits as collateral damage.”
Animal welfare group SPCA echoed Stephenson’s concerns, with the organisation’s Chief Scientific Officer Dr Arnja Dale telling local media that more humane eradication methods should be considered before the virus strain is released.
“We also strongly urge that, at the very least, this new virus strain should not be released in New Zealand until there is a vaccination available that is adequately proven to protect companion rabbits.”
Only time will tell as to whether there’s right to be concerned about the overall welfare of pet rabbits. In the meantime, the New Zealand Veterinary Association recommends that pet owners ensure their hopping companions are all up to date with their vaccinations and are kept indoors as much as possible.

Domestic pet rabbit in New Zealand

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