A mix of recent stories from New Zealand highlight the importance of controlling invasive species for the benefit of native plants and animals – and the importance of public engagement as part of the solution. An article in the NZ Herald begins by asking if there is any solution to the devastating problem of rabbits. […]
‘If overabundant wildlife populations are not reduced by some means, the result must be death by starvation or disease coupled with extensive damage to other species in these ecosystems,’ say ecologists Charley Krebs and Judy Myers. The killing of animals is abhorrent to many people, but alternative controls (e.g. capture and relocation or sterilisation) or […]
‘Gene drive’ technology (where genome editing increases the likelihood of certain traits being inherited) has now been applied to mammals. Previously trialled on insects, the technology was used to control the colour of mice in trials at UC San Diego, USA. Gene drive technology is being explored as a potential breakthrough in the control of […]
The RHDV1-K5 team from the Centre for Invasive Species (CISS) has won a National Biosecurity Award for work in the 2017 release and monitoring of the rabbit control virus. When accepting the Award, the Centre for Invasive Species Solutions noted it was a strong cooperative endeavour between the Australian Government, NSW Department of Primary Industries, […]
Successive biological controls for rabbits have been the most important factor in the recovery of sand dunes along the Coorong in South Australia. Researchers from Flinders University have recorded peaks in vegetation regrowth and dune stabilisation coinciding with various biological controls, ranging from myxomatosis (1952) and the rabbit flea (1968), to RHDV (in 1995 and […]
Low rabbit numbers on an Eyre Peninsula property may be due to an increase in RHDV K5 during cooler months – a result anticipated by Natural Resources Officer, Ben Tucker, who coordinated the local release of the virus at trial sites last year. For more information, see the November, 2018 Stock Journal article.
CSIRO funded researchers have discovered why young rabbits are immune to RHDV1, but not RHDV2. It seems that young rabbits have a naturally heightened immune system, but RHDV2 is able to shut down the elevated immune state – whereas RHDV1 is not. For more information, see the Research Updates in Feral Flyer Issue 350 (the […]
Ecological modellers have shown how reducing wild rabbit numbers helps maintain small native mammals. Benefits for small mammals occur when 30-40% of rabbits are removed through a mix of biological and physical controls. Higher rates of rabbit removal can lead to a decline in small mammals in the short term, but with subsequent long term […]
Combing 17 years of field data on wild rabbit mortality and a model of rabbit populations has provided researchers with insight to the interactions between rabbit diseases – concluding that rabbits that have survived myxomatosis are more vulnerable to RHDV than those not previously infected by myxo. The researchers suggest several factors that may influence […]
Gene drive technology (a way to spread a specific gene through a species) may have potential for feral animal control (especially in isolated pest populations), but non-technical questions are also being raised. For more information, see the ABC News article – ‘Feral science or feral solution‘.