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Alien invaders: the illegal reptile trade is a serious threat to Australia
Australians are banned from keeping non-native reptiles as pets, but there is a nevertheless a thriving illegal trade in these often highly prized animals. We have documented the threat that these species – many of them venomous or potentially carrying exotic diseases – pose to people and wildlife in Australia.
In a study published in Conservation Letters, we estimate that of 28 alien reptile species illegally traded in Victoria between 1999 and 2012, 5 of them (18%) would have the potential to establish themselves in the wild if they escape or are released. Our findings also indicate that smaller alien reptiles are more likely to establish in the wild in Australia.
Worryingly, more than a third of these illegal reptile species are highly venomous snakes (10 out of the 28 species). The presence of 10 alien venomous snakes represents a serious human health hazard, even in Australia which is already home to some of the most venomous snakes in the world.
Previous research has focused on the overharvesting of wild populations to meet the demand for illegal wildlife products such as traditional medicine ingredients and other commodities, as well as live animals themselves.
But the trade in illegal wildlife poses a risk not just to the species being trafficked, but also to the people and ecosystems potentially exposed to new hazardous alien species as a result. Unfortunately, these risks are often overlooked or underestimated by wildlife agencies.
Frogs take their diseases with themEffective biosecurity measures are crucial for tackling these threats. Are Australia’s biosecurity activities as good as they are made out to be in popular television shows about customs officers policing our borders?
Let’s look at the example of ranaviruses, an emerging disease that kills huge numbers of amphibians around the world. The introduction of these viruses to Australia could be catastrophic for native frogs. Alien frogs transported as unintentional stowaways can carry ranavirus, so intercepting those alien frogs will also prevent the spread of these pathogens.
In an earlier study, we examined the effectiveness of Australian biosecurity activities for stopping the introduction of dangerous alien ranaviruses. Our main conclusion was that existing biosecurity measures have significantly reduced the likelihood of introduction of alien ranaviruses.
Moreover, biosecurity activities do not need to intercept every single incoming alien frog in order to reduce significantly the likelihood that new diseases will be introduced. This is particularly good news for threatened native frogs.
Puff adders have been illegally kept in Victoria, despite being a seriously dangerous pet. Julius Rückert/Wikimedia Commons A way forwardUnfortunately, many other countries seem to have inadequate systems for keeping unwanted species out, despite the many social, economic and ecological impacts that alien species cause across the world.
This situation paints a bleak picture for the future of biodiversity, with alien species increasingly wreaking havoc across all environments. But we believe there is hope and a way forward – as long as countries are willing to work much harder to combat the threats posed by alien species.
Foremost, we need to improve our understanding of the importance and drivers of transport pathways through which alien species travel. Armed with that knowledge, we can plan more effective management – although a lack of data is no excuse for delay in the meantime. Prevention is always better than cure, so our number one goal should be to prevent the introduction of alien species, rather than simply tackling the problems they cause.
Some important lessons emerge from our research. The illegal wildlife trade and the transport of stowaways are global issues. Therefore no country, however effective its biosecurity, can solve its problems on its own. Multilateral biosecurity agreements will be necessary to manage both stowaways and the illegal wildlife trade.
In Australia, we need to raise public awareness about alien species. We have to enlist the public in reporting suspicious activities and the presence of alien species at large. Meanwhile, supporting biosecurity activities is a no-brainer. Biosecurity is a responsibility shared by all Australians, and the general public have a role to support biosecurity activities, even if that means a few more minutes to clear biosecurity ports and airports. Be on the lookout for potential alien species, and if you spot anything unusual, report it to the Department of Agriculture and Water Resources.
Pablo Garcia-Diaz receives funding from the Invasive Animals CRC and the Department of Education and Training (Australian Government).
Joshua Ross receives funding from the ARC, NHMRC, and D2D CRC.
Phill Cassey receives funding from Australian Research Council and the Invasive Animals CRC.
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John Kerry warns of climate threat at talks overshadowed by Trump – video
US secretary of state John Kerry urges countries to treat the earth’s changing climate as an urgent threat as he addresses the uncertainty created by the election of Donald Trump. ‘Obviously an election took place in my country, and I know it’s left some here and elsewhere feeling uncertain about the future,’ he told the audience, before reiterating that a majority of citizens in the US believe climate change is a real threat
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World Coal Association boss Benjamin Sporton puts his case for a place at the UN climate talks, but won’t criticise climate science denial supporters
An awful lot of people would really like it if Benjamin Sporton went home and never came back.
Sporton is the boss of the World Coal Association and he’s walking the halls of the United Nations climate change talks.
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Secretary of state says the outgoing Obama administration is determined to prevent Trump withdrawing the US from the landmark deal
John Kerry has signalled that the outgoing Obama administration is preparing a fight to ensure that Donald Trump does not withdraw the US from the landmark Paris agreement, to prevent catastrophic climate change.
“This is bigger than one person, one president,” the US secretary of state said in Marrakech, before his last address to the UN climate summit being held there. “We have to figure out how we’re going to stop this.”
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Native title holders propose parks expansion to create hundreds of Indigenous jobs – video
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Paris climate deal at risk unless countries step up plans, says watchdog
International Energy Agency chief says current government pledges to cut greenhouse gas emissions are inadequate
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The agreement, reached almost a year ago, is only a “framework”, said the International Energy Agency on Wednesday, and requires sweeping policy changes among governments around the world to put its aims into force.
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Autumn on the Herefordshire Trail
Herefordshire Massive oaks, neolithic tombs and a farmer on a quad bike checking his sheep are a few of the highlights on this 12-day walk
Often within sight of the Malverns, Black Mountains or Radnor Forest, our 12-day walk along the Herefordshire Trail leads from place to place around the county. Massive oaks used to be pollarded, and, in derelict orchards, clumps of mistletoe colonise old trees. Wayside hedgerows are loaded with haws, rotting blackberries, holly and spindle berries; crab apples strew rough lanes and bullaces keep yellow leaves and wrinkled purple fruit.
Churches, from Dore Abbey to Pudleston, are decorated with flowers, fruit and swags of hops for harvest festivals. Pheasants bred for shoots feed and shelter in scrubby woods and, above Leintwardine, mature birds scuttle and glide between coverts of maize as five red kites wheel overhead.
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