Ruqayyah Snyder
European rabbits were introduced to Australia in the 1700s and 1800s by European settlers. They have since become a pest, causing great environmental damage. Rabbits have spread across the country, inhabiting 70% of Australia's landmass, including Western Australia. The Western Australian government built a rabbit-proof fence between 1901 and 1907 to try to control the rabbit population, but it was unsuccessful. Various methods have been used to manage rabbit populations, including fences, poisons, and pathogens, with varying levels of success.
| Characteristics | Values |
|---|---|
| Arrival of rabbits in Western Australia | Rabbits were introduced to Australia in the 1800s by European settlers. They arrived in Western Australia by 1894, according to one source, and were spotted there by 1890, according to another. |
| Rabbit-proof fences | The Western Australian government built a rabbit-proof fence between 1901 and 1907 to protect pastoral lands. However, fencing was largely ineffective in deterring rabbits. |
| Viral control measures | The myxoma virus was introduced to Western Australia in 1951, and while it initially reduced rabbit numbers, rabbits eventually developed immunity. The Rabbit Hemorrhagic Disease Virus (RHDV) or calicivirus was accidentally released in 1995 and officially released in 1996, reducing rabbit numbers by up to 90% in dry areas. |
| Current rabbit population | It is estimated that around 200 million feral rabbits inhabit Australia, covering 70% of the country's landmass. |
| Impact on Western Australia | Rabbits have caused environmental damage and economic losses in Western Australia, affecting native species and agricultural production. |
| Control measures in Western Australia | Baiting is the most cost-effective method to reduce rabbit populations, but restrictions apply due to the sensitivity of native animals and pets to certain poisons. Other methods include warren destruction and hunting with ferrets. |
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What You'll Learn
- Rabbit-proof fences were built in Western Australia between 1901 and 1907
- The rabbit population in Western Australia was impacted by the myxoma virus in the 1950s
- Rabbits were introduced to Australia by European settlers in the 1800s
- Rabbits are a problem for farmers, destroying crops and vegetable gardens
- Rabbit haemorrhagic disease virus (RHDV) is another pathogen used to control rabbit populations
Rabbit-proof fences were built in Western Australia between 1901 and 1907
Rabbits were introduced to Australia by European settlers in the 1800s. They were initially brought over as a source of food, but they quickly became a problem for colonists and farmers as they spread across the southern two-thirds of the country, causing environmental damage and destroying crops. In 1887, agricultural losses from rabbit damage prompted the New South Wales government to offer a reward for an effective method of extermination.
In response to the growing rabbit problem, the Western Australian government dispatched a surveyor, Arthur Mason, in 1896 to report on the rabbit population along the border with South Australia. Mason recommended the construction of a series of fences to control the rabbit population. Subsequently, a Royal Commission was held in 1901, which resulted in the decision to build a rabbit-proof fence across Western Australia.
The construction of the Number 1 Rabbit Proof Fence, also known as No. 1 Fence, began in 1901 and was completed in 1907. It stretched 1,824 kilometres from the south coast to the northwest coast, along a line north of Burracoppon, 230 kilometres east of Perth. The fence was constructed by private contractors, and from 1904 onwards, the project was overseen by Richard John Anketell and a workforce of 120 men, 350 camels, 210 horses, and 41 donkeys.
Unfortunately, the rabbit-proof fence proved ineffective in containing the rabbit population. By 1902, rabbits had already been found west of the fence line, and the fence only served to fence in rabbits that were already in the state. The Western Australian government's efforts to control the rabbit population through fencing were ultimately unsuccessful, and other methods had to be explored.
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The rabbit population in Western Australia was impacted by the myxoma virus in the 1950s
Rabbits were introduced to Australia in the late 18th and early 19th centuries by European settlers. They were brought as a source of food, and for hunting and breeding. The rabbit population grew rapidly, and by 1827, they were already noted to be "becoming so numerous throughout the colony". By 1920, it is thought there were 10 billion rabbits in Australia.
In the 1950s, the Australian government introduced the myxoma virus, which causes myxomatosis, to control the rabbit population. The virus was the first ever to be purposefully introduced to the wild to eradicate a species. It was highly lethal, with a case fatality rate of 99.8%. The myxoma virus successfully reduced the rabbit population in Western Australia and across the country. However, within a few years, the virus became less virulent, allowing infected rabbits to survive longer and transmit the disease more effectively. This survival and transmission of the disease exerted a strong selection pressure for the evolution of rabbits resistant to myxomatosis.
The introduction of the myxoma virus in the 1950s was part of a series of efforts to control the invasive rabbit population in Australia. Before the virus was introduced, the government and farmers had tried building fences to keep the rabbits from destroying crops. A rabbit-proof fence was built in Western Australia from 1901 to 1907 to try to control the spread of the rabbit population. However, the rabbits could both jump very high and burrow underground, so the fence was ultimately ineffective.
Despite the initial success of the myxoma virus in reducing the rabbit population, the rabbits eventually developed an immunity to it. As a result, scientists had to turn to other methods to control the invasive rabbit population. Rabbit haemorrhagic disease virus (RHDV) is another rabbit-specific pathogen that has been used to control wild rabbit populations in Australia. It was discovered in 1980 and first used in 1995 after escaping from a quarantine facility. RHDV is transmitted by flies and can kill rabbits within 48 hours.
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Rabbits were introduced to Australia by European settlers in the 1800s
A colony of feral rabbits was reported in Tasmania in 1827, and European wild rabbits were released in Victoria in 1859, and in South Australia shortly after. By 1866, the Geelong Advertiser reported that 50,000 had been killed by hunters. By 1886, they were found throughout Victoria and New South Wales, extending to Western Australia by 1894 and into the Northern Territory by the 1900s. By 1910, feral rabbits were found throughout most of their current range, covering two-thirds of Australia.
European rabbits have caused great environmental damage in Australia. They have hurt native species and crops, and their rapid reproduction has led to large populations that have destroyed crops and land, leading to soil erosion. They also negatively affected agriculture and plants by overgrazing. Their ability to reproduce at a young age and all year round has contributed to their rapid spread.
In response to the rabbit infestation, the Australian government and farmers have tried various techniques to manage rabbit populations, including fences, poisons, and pathogens. From 1901 to 1907, a rabbit-proof fence was built in Western Australia to try to control the spread of the rabbit population. However, due to the rabbits' ability to jump high and burrow underground, the fence was ultimately unsuccessful. Other methods, such as the introduction of the myxoma virus in the 1950s, which causes myxomatosis, and the Rabbit Hemorrhagic Disease Virus (RHDV) in the 1980s, have had more success in reducing rabbit numbers. Despite these efforts, rabbits remain entrenched in the southern and central areas of Australia, with scattered populations in the northern deserts.
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Rabbits are a problem for farmers, destroying crops and vegetable gardens
Rabbits were introduced to Australia in the 1800s by European settlers. They have since become a significant problem for farmers, destroying crops and vegetable gardens. The European rabbit (Oryctolagus cuniculus) was first introduced to Australia by the First Fleet in 1788 as a source of food. They were likely bred in cages.
European wild rabbits were subsequently introduced, especially as game for hunting. With no natural predators and ideal breeding conditions, the wild rabbit populations grew rapidly. They spread across the southern two-thirds of Australia, causing environmental damage and becoming a problem for colonists trying to establish vegetable gardens. By the 1920s, less than 70 years after their introduction, the rabbit population in Australia had exploded to an estimated 10 billion.
Rabbits are well-adapted to the Australian climate, which is similar to their native Mediterranean climate, with cool, wet winters and hot, dry summers. They can reproduce at a young age and can produce more than four litters a year, with each litter containing two to five kits (baby rabbits). This rapid reproduction, combined with a lack of natural predators, has made rabbits a persistent problem for farmers.
Farmers have tried various methods to control rabbit populations, including building fences, destroying rabbit warrens (underground tunnels), and using poisons and pathogens. Rabbit-proof fences were constructed in Western Australia and other states to prevent the spread of rabbits. While these fences provided a temporary solution, rabbits eventually breached them and continued their spread. The Western Australian government's 1,700-kilometre rabbit-proof fence, built between 1901 and 1907, was unsuccessful in containing the rabbits.
In the 1950s, the government turned to biological control measures by introducing the myxoma virus, which causes myxomatosis, into the rabbit population. This effort was initially successful in reducing rabbit numbers, but over time, the rabbits developed immunity, rendering the virus less effective. Scientists have since explored other viruses, such as the Rabbit Hemorrhagic Disease Virus (RHDV), to manage rabbit populations and their impact on agriculture and the environment.
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Rabbit haemorrhagic disease virus (RHDV) is another pathogen used to control rabbit populations
Rabbits were introduced to Australia in the late 1800s by European settlers. They rapidly spread across the southern parts of the country, causing great environmental damage. By 1920, there were an estimated 10 billion rabbits in Australia. Today, the population is estimated to be around 200 million, inhabiting 70% of Australia's landmass.
In the 1950s, the Australian government turned to biocontrol measures to combat the rabbit population. They introduced the myxoma virus, which causes myxomatosis, into the rabbit population. While this initially reduced the rabbit population, the survivors adapted and partially recovered their numbers.
In Australia, RHDV was purposely introduced as a biocontrol agent in the 1990s. Despite rigorous quarantine measures, the virus escaped from a facility on Wardang Island, South Australia, in 1995 and spread to the mainland. By the winter of 1996, it had reached Victoria, New South Wales, the Northern Territory, and Western Australia. RHDV was particularly effective in dry areas, reducing rabbit numbers by up to 90%.
RHDV has high morbidity and mortality rates in adult European rabbits, with mortality ranging from 40% to 100%. Young rabbits are less likely to be infected, and kits younger than four weeks old do not typically become ill. Surviving rabbits develop strong immunity to the virus. However, there is currently no cure for RHDV, and prevention through vaccination is crucial.
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Frequently asked questions
Yes, rabbits were spotted in Western Australia as early as 1827 and by 1894 they were found throughout the state.
European settlers brought domesticated rabbits to Australia with the First Fleet in 1788. They were bred as food animals, most likely in cages. European wild rabbits were subsequently introduced, especially as game for hunting.
In the early 1900s, the Western Australian government built a 1700-kilometre rabbit-proof fence to protect the pastoral lands of the state. However, this was largely unsuccessful as rabbits could jump over or burrow under the fence. Other methods to control the population include hunting with ferrets, trapping, warren destruction, poisoning, and the introduction of viruses such as myxomatosis and rabbit haemorrhagic disease virus (RHDV).
