Kirsty Johansen: Australia is home to some of the most diverse natural landscapes.
On the Gold Coast, a city in the state of Queensland, unspoilt
coastline meets native bushland making it prime location for urban development.
But as a consequence, deforestation is increasing,
destroying or leaving in fragments the habitats of one of the country’s most
well-loved animal: the koala.
Al Mucci:
They are in imminent danger of becoming extinct,
becoming endangered. The population is doing this, it’s not doing this, it’s
not doing this, the population is doing this and every day that goes by means
there’s one less koala.
Kirsty Johansen: Al Mucci, from the Dreamworld Wildlife
Foundation, a nonprofit that supports conservation, research and education in
the wild, has been working with koalas for more than three decades. He says
over the past 10 years he’s seen the koala population on the Gold Coast dwindle
from 10,000 to less than 2,000. It’s that statistic that drove Mucci to start a world-first pilot program, the Living
Koala Genome Bank project, that aims to address the increasing threat of local
koala extinction due to habitat loss and disease and save the few koalas left
for future generations.
Al Mucci:
When you’ve got five koalas here, ten koalas
there, a freeway, an industrial area, sports fields, golf course, housing. How
do these koalas breed with these? They can’t fly. They need trees, they need
help, they need support, so we grab females from this population, males from
this population bring them into our captive breeding facility, see how serious
they are with disease, clean them up and put them back into the wild with a
joey in its pouch from an unrelated male,
Kirsty Johansen: With their trees disappearing, koalas are spending more time on
the ground in search of food and shelter and this is when they’re most
vulnerable to being hit by vehicles and attacked by dogs. Another reason for
their population decline is the disease chlamydia, which is an epidemic among
koalas. The stress of losing habitat can cause the symptoms of chlamydia to
manifest – which can lead to blindness, severe bladder inflammation,
infertility and ultimately death. Over the past 6-12 months, Mucci and his team have rescued 20 wild koalas and brought
them into this quarantine facility. More than half have had to be euthanized
because of illness. But the rest are being treated for chlamydia with
antibiotics and will then be vaccinated against the disease. While the goal is
to release the koalas back into the wild, a lot must happen before that can occur.
It’s currently mating season, and for University of Queensland Associate
Professor Stephen Johnston who is the lead reproductive biologist on the
project this is crucial time. He is utilising new
breeding and molecular technologies to map the genetic variation of wild koalas
in different locations across the Gold Coast. He can then use that information
to increase diversity when crossbreeding the animals in captivity.
Stephen Johnston: we have wild animals a wild male and a wild female and those animals
may have been from two different complete locations so we can bring those
animals in together into the same enclosure we can test for the genetics and
again the same thing we can actually see in their offspring whether we’ve got a
representation of those genetics or have we increased the diversity.
Kirsty Johansen: The goal is to see whether captive koala populations could act as
reservoirs of healthy genes to protect local wild koalas.
Stephen Johnston: I guess what we are trying to do here in captivity is demonstrate
that we can fine scale manage the genetics whichever way it might be, to either
maintain a population, as a complete population or to bring new genes into that
population to increase the genetic fitness.
Kirsty Johansen: One way koalas are crossbred is through artificial insemination. Johnston
first stimulates the reproductive tract of a female called Cinnamon.
Stephen Johnston: See she’s settling down now.
Kirsty Johansen: Next, selected semen, with particular genetic
characteristics is delivered via a catheter. The other way is more
conventional.
Michelle: Come on handsome
Kirsty Johansen: A male called Sully has been picked as the best prospect to be
taken to meet the females today.
Michelle: Hey Lola
Kirsty Johansen: It’s a process. First, he is introduced nose to nose.
Michelle: Oh not happy with him or maybe you are?
Kirsty Johansen: The females get agitated, before Sully is released onto the ground
to pick his favourite. But for poor Sully it’s not
his day.
Michelle: So it looks like Sully was keen today.
He was very keen. You could tell he was keen to introduce himself to all the girls
in here, unfortunately all the girls were giving him the wrong signs though,
they were vocally and physically rejecting him which is a pretty strong sign
they are not in estrus.
Kirsty Johansen: Pinpointing exactly how many koalas are left in Australia is a
challenge for scientists because of the country’s size and the koala’s nomadic
nature. In April 2012, the Australian government officially listed koalas as
vulnerable - meaning numbers are in or at risk of steep decline - in the states
of New South Wales, Queensland and the Australian Capital Territory. Deborah Tabart is CEO of the Australian Koala Foundation, an
international nonprofit dedicated to the effective management and conservation
of the koala and its habitat. In May this year she announced koalas were
functionally extinct – meaning a species’ population has declined so much that
it no longer plays a significant role in the ecosystem.
Deborah Tabart: Our research has shown
that there’s only 15 percent of the habitats of Australia left and we are
confident there’s no more than 86,000 animals more likely half that. And that’s
why she is lobbying the Australian government to enact a law called the Koala
Protection Act which is based on the US Bald and Golden Eagle Protection Act.
The Koala Protection Act says if there is a koala tree on your property you
can’t do anything until you prove your activity is benign it’s that simple.
Kirsty Johansen: Saving the koala is a personal mission for Tabart
but also economically crucial for Australia.
Kirsty Johansen: Koalas are a major Australian tourist drawcard and you can see
why. National tourism figures show 75 percent of inbound visitors report they
hope to see a koala when making the decision to travel here.
Kirsty Johansen: Australia Institute research has found koalas are estimated to
bring in almost 2.2 billion US dollars annually to Australia and generate
around 30,000 tourism industry jobs. Presidents, Prime Ministers, celebrities
and regular folks all want to be photographed holding a koala during their
visit. Al Mucci from the Dreamworld Wildlife
Foundation says he doesn’t want to ever see that change. His project already
has a success story and we are going to look for him
Al Mucci: The beeps are getting louder and a bit closer together so that’s
good. I haven’t seen our little fella for about a week so I’m getting excited.
Kirsty Johansen: His name is El Yungo, and he’s the first
koala that the project has successfully released back into the wild. What’s El Yungo’s backgound?
Al Mucci:
He was a koala in imminent danger of dying in
the Coomera area of the Gold Coast through development. When we brought him
into the program he was riddled with chlamydia, so we’ve cleaned him up,
vaccinated him, he’s bred with some of our females as part of the program and
now he’s been released to another reserve so he is new genetics for this
property here.
Kirsty Johansen: El Yungo wears a collar and can be
tracked using GPS and VHF tracking devices. The tracking devices can pick up a
koala within 12 kilometres so it can sometimes be
tough to find their exact location, especially when they are perched at the top
of the trees.
Al Mucci:
Alright the beeps are getting stronger, so he
must be in one of these trees. There he is got him.
Yep the collar is on him. That’s El Yungo and he’s
having a bit of a snooze. Good on you mate you are looking good.
Kirsty Johansen: By collecting El Yungo’s fecal samples
each day the team are able to monitor his health and
pick up any new risks of disease.
Al Mucci:
My vision is that the population stays
stable. We’ve disrupted the bushland area so much now that we’re not going to
see this, we just need to make it stable. Managing the genetics, managing the
disease, it’s intervention and this is the only way we are going to save them.
##
|
TIMECODE |
LOWER
THIRD |
1 |
1:23 |
AL MUCCI DREAMWORLD WILDLIFE FOUNDATION |
2 |
3:41 |
STEPHEN JOHNSTON THE UNIVERSITY OF QUEENSLAND |
3 |
6:08 |
DEBORAH TABART CEO, AUSTRALIAN KOALA FOUNDATION |
4 |
6:25 |
GOLD COAST, AUSTRALIA KIRSTY JOHANSEN SPECIAL CORRESPONDENT |