Australia Battles to Save Last 11 Wild ‘Earless Dragons’ 

This picture taken on March 25, 2024 shows a grassland earless dragon lizard at the Tidbinbilla Nature Reserve located on the outskirts of the Australian capital city of Canberra. (AFP)
This picture taken on March 25, 2024 shows a grassland earless dragon lizard at the Tidbinbilla Nature Reserve located on the outskirts of the Australian capital city of Canberra. (AFP)
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Australia Battles to Save Last 11 Wild ‘Earless Dragons’ 

This picture taken on March 25, 2024 shows a grassland earless dragon lizard at the Tidbinbilla Nature Reserve located on the outskirts of the Australian capital city of Canberra. (AFP)
This picture taken on March 25, 2024 shows a grassland earless dragon lizard at the Tidbinbilla Nature Reserve located on the outskirts of the Australian capital city of Canberra. (AFP)

Australia's grassland earless dragon is no bigger than a pinkie when it emerges from its shell, but the little lizard faces an enormous challenge in the years ahead: avoiding extinction.

As recently as 2019, scientists in Canberra counted hundreds of grassland earless dragons in the wild. This year, they found 11.

In other areas of the country, the lizard has not been seen for three decades.

The earless dragon -- which is light brown and has long white stripes down its body -- measures about 15 centimeters (the size of a US$1 bill) when fully grown.

It lacks an external ear opening and functional eardrum, hence the name.

Australia has four species of earless dragons. Three are critically endangered, the highest level of risk, while the fourth is endangered.

The critically endangered dragons will likely be extinct in the next 20 years without conservation efforts.

"If we properly manage their conservation, we can bring them back," said University of Canberra Professor Bernd Gruber, who is working to do just that.

Breeding programs

Australia is home to thousands of unique animals, including 1,130 species of reptiles that are found nowhere else in the world.

Climate change, invasive plants and animals, and habitat destruction -- such as the 2019 bushfires, which burned more than 19 million hectares (46 million acres) -- have pushed Australia's native species to the brink.

In the past 300 years, about 100 of Australia's unique flora and fauna species have been wiped off the planet.

To save the earless dragons there are several breeding programs under way across Australia, including a bio-secure facility in Canberra's bushlands, which Gruber is overseeing.

On shelves are dozens of tanks that house the lizards -- one to each container -- with a burrow, grass and heat lamps to keep them warm.

The biggest problem is matchmaking, with the territorial female lizards preferring to choose their mates.

This means that scientists must introduce different male lizards to the female until she approves.

If that was not hard enough, scientists must also use genetic analysis to determine which lizards are compatible together and ensure genetic diversity in their offspring.

At any one time, the breeding programs around Australia can have up to 90 earless dragons, which will eventually be released back into the wild.

At the moment, Gruber is looking after more than 20 small lizards that have just hatched. Scientists almost missed the tiny eggs until three weeks ago.

"There is a sense of hope looking over them," he told AFP.

Habitat destruction

Despite the efforts of scientists, the lizards are contending with a shrinking habitat and a changing climate.

Australian Conservation Foundation campaigner Peta Bulling said the lizards only live in temperate grasslands, most of which have been destroyed by urban development.

Only 0.5 percent of grasslands present at the time of European colonization still exist.

Without the lizards, Australia's alpine grasslands could look vastly different.

"We don't understand everything the grassland earless dragons do in the ecosystem, but we can make guesses they play an important role in managing invertebrate populations. They live in burrows in the soil, so they are probably aerating the soil in different ways too," she told AFP.

Bulling said that while it was important to bring the lizard back, it was also vital to protect their habitats, without which the newly saved lizards would have nowhere to live.

"They are highly specialized to live in their habitat but they will not adapt quickly to change," she said.

Last year, scientists rediscovered a small number of another kind of earless dragons after 50 years in an area that is being kept secret for conservation reasons.

Resources are being poured into understanding just how big that population is and what can be done to protect it.



Blood Tests Allow 30-year Estimates of Women's Cardio Risks, New Study Says

A woman jogs in a park in Saint-Sebastien-sur-Loire near Nantes, France January 19, 2024. REUTERS/Stephane Mahe/File Photo Purchase Licensing Rights
A woman jogs in a park in Saint-Sebastien-sur-Loire near Nantes, France January 19, 2024. REUTERS/Stephane Mahe/File Photo Purchase Licensing Rights
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Blood Tests Allow 30-year Estimates of Women's Cardio Risks, New Study Says

A woman jogs in a park in Saint-Sebastien-sur-Loire near Nantes, France January 19, 2024. REUTERS/Stephane Mahe/File Photo Purchase Licensing Rights
A woman jogs in a park in Saint-Sebastien-sur-Loire near Nantes, France January 19, 2024. REUTERS/Stephane Mahe/File Photo Purchase Licensing Rights

Women’s heart disease risks and their need to start taking preventive medications should be evaluated when they are in their 30s rather than well after menopause as is now the practice, said researchers who published a study on Saturday.

Presenting the findings at the European Society of Cardiology annual meeting in London, they said the study showed for the first time that simple blood tests make it possible to estimate a woman’s risk of cardiovascular disease over the next three decades.

"This is good for patients first and foremost, but it is also important information for (manufacturers of) cholesterol lowering drugs, anti-inflammatory drugs, and lipoprotein(a)lowering drugs - the implications for therapy are broad," said study leader Dr. Paul Ridker of Brigham and Women’s Hospital in Boston, Reuters reported.

Current guidelines “suggest to physicians that women should generally not be considered for preventive therapies until their 60s and 70s. These new data... clearly demonstrate that our guidelines need to change,” Ridker said. “We must move beyond discussions of 5 or 10 year risk."

The 27,939 participants in the long-term Women’s Health Initiative study had blood tests between 1992 and 1995 for low density lipoprotein cholesterol (LDL-C or “bad cholesterol”), which are already a part of routine care.

They also had tests for high-sensitivity C-reactive protein (hsCRP) - a marker of blood vessel inflammation - and lipoprotein(a), a genetically determined type of fat.

Compared to risks in women with the lowest levels of each marker, risks for major cardiovascular events like heart attacks or strokes over the next 30 years were 36% higher in women with the highest levels of LDL-C, 70% higher in women with the highest levels of hsCRP, and 33% higher in those with the highest levels of lipoprotein(a).

Women in whom all three markers were in the highest range were 2.6 times more likely to have a major cardiovascular event and 3.7 times more likely to have a stroke over the next three decades, according to a report of the study in The New England Journal of Medicine published to coincide with the presentation at the meeting.

“The three biomarkers are fully independent of each other and tell us about different biologic issues each individual woman faces,” Ridker said.

“The therapies we might use in response to an elevation in each biomarker are markedly different, and physicians can now specifically target the individual person’s biologic problem.”

While drugs that lower LDL-C and hsCRP are widely available - including statins and certain pills for high blood pressure and heart failure - drugs that reduce lipoprotein(a) levels are still in development by companies, including Novartis , Amgen , Eli Lilly and London-based Silence Therapeutics.

In some cases, lifestyle changes such as exercising and quitting smoking can be helpful.

Most of the women in the study were white Americans, but the findings would likely “have even greater impact among Black and Hispanic women for whom there is even a higher prevalence of undetected and untreated inflammation,” Ridker said.

“This is a global problem,” he added. “We need universal screening for hsCRP ... and for lipoprotein(a), just as we already have universal screening for cholesterol.”