The discovery of 52 critically endangered geckos on the UAE’s east coast has raised hopes for the survival of the threatened species.
The Emirati leaf-toed gecko – Asaccus caudivolvulus – was thought to be on the brink of extinction but a 2022 expedition found the geckos in five locations despite heavy development in the area.
Geckos play a crucial role in ecosystems because they feed on insects and help to balance the number of species.
But due to habitat loss caused by development, the gecko population has dwindled.
The species is now classified as critically endangered by the International Union for Conservation of Nature (IUCN).
The expedition was financed by the Mohamed bin Zayed Species Conservation Fund and aims to help bring the creature back from the brink of extinction.
"There was a lot of pressure because there is a lot of effort and money involved," said Prof Salvador Carranza, from the Institute of Evolutionary Biology at Pompeu Fabra University in Barcelona, who led the expedition.
You can’t always stop development but you can make people aware and do it in a way that has least impact on populations in the area
Johannes Els,
Breeding Centre for Endangered Arabian Wildlife, Sharjah Environment and Protected Areas Authority
The field trip took place over 15 hot and humid nights in late May and early June last year, which the team identified as the best time to spot the reptiles.
They deliberately picked two weeks with little moonlight, when the geckos are more active because there is a reduced risk from predators. They are nocturnal species and retreat into deep cracks and crevices during the heat of the day.
“These nights are perfect,” Prof Carranza said. “If you go in winter you don’t see anything, even if they are there.”
The gecko is native to a small part of the Hajar Mountains on the north-east of the UAE and is the only known vertebrate species endemic to the UAE.
The six-strong team travelled as much as 15 kilometres a night and used only flashlights to chart a path through mountains, down craggy slopes and across rock faces searching for the elusive and shy creature.
The gecko is about 11 centimetres long, slightly transparent, has long and thin legs for climbing and can lay only one egg at a time.
It gets its name from the pads on its toes that resemble a leaf. It also has light colouring, orange eyes and orange to brown markings on its back.
“It is a very shy creature,” Prof Carranza said. “When you shed light, they hide immediately. We found them in places we were absolutely not expecting.”
The team was also able to complete the genome sequence of the gecko. This is crucial to build a picture of the animal and aid conservation efforts. It showed a reduction in genetic diversity that can be attributed to a severe and ongoing decline in its population size.
“If a habitat is reduced then inbreeding can take place,” said Bernat Burriel, one of Prof Carranza’s students who worked on this analysis.
“Inbreeding means you have less capabilities of adapting to new situations. This ends up in an ‘extinction vortex’, which means species cannot adapt and go extinct,” he said. “We need to preserve it as fast as possible.”
Last summer's expedition was not just two weeks' work but the culmination of years of effort from experts around the world, the fund and the authorities on the east coast who aided the trip.
The team highlighted that a significant amount of conservation work was accomplished with the $9,000 (Dh33,052) grant.
“It was a big surprise to find 52,” said Johannes Els, from the Breeding Centre for Endangered Arabian Wildlife at Sharjah’s Environment and Protected Areas Authority, who was also part of the expedition.
“But it was a pleasant surprise. These are fragmented populations but now we have important data that allows us to assess the species.”
Mr Els said a reassessment of the species could now take place which, in theory, could trigger a different and more positive assessment from the IUCN.
He pointed to the success of the Arabian oryx programme, which brought the animal back from the brink, as a sign of what could be achieved.
“The first step is always trying to conserve as much of the habitat that is there and leave them untouched," Mr Els said.
"You can’t always stop development but you can make people aware and do it in a way that has least impact on population in the area.”
Mr Els said authorities were raising conservation efforts and had been informed of the study so the gecko could be considered in future development plans. Some of the geckos' habitats are in areas that are already protected.
More conservation plans that are yet to be revealed are also in the works.
“The rediscovery of a species that had been thought to be extinct is a relief and a boost to anyone who loves nature and the web of biodiversity which sustains our planet,” said Nicolas Heard, acting director general of the Mohamed bin Zayed Species Conservation Fund, which has now supported more than 2,600 such projects around the world with individual grants of up to $25,000 (Dh91,812).
“It brings optimism that maybe we can reduce the rate of extinction and the damage we are causing to our environment. In this case, finding a population of the Emirati leaf-toed gecko is particularly poignant,” he said.
“For a number of years, we thought that the UAE had lost for ever the only vertebrate unique to this country and nowhere else. That would have been truly tragic, and its rediscovery will hopefully encourage further conservation effort and enthusiasm.”
How the UAE aids conservation and sustainability - in pictures
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This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
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Friday: First practice - 1pm; Second practice - 5pm
Saturday: Final practice - 2pm; Qualifying - 5pm
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Another way to earn air miles
In addition to the Emirates and Etihad programmes, there is the Air Miles Middle East card, which offers members the ability to choose any airline, has no black-out dates and no restrictions on seat availability. Air Miles is linked up to HSBC credit cards and can also be earned through retail partners such as Spinneys, Sharaf DG and The Toy Store.
An Emirates Dubai-London round-trip ticket costs 180,000 miles on the Air Miles website. But customers earn these ‘miles’ at a much faster rate than airline miles. Adidas offers two air miles per Dh1 spent. Air Miles has partnerships with websites as well, so booking.com and agoda.com offer three miles per Dh1 spent.
“If you use your HSBC credit card when shopping at our partners, you are able to earn Air Miles twice which will mean you can get that flight reward faster and for less spend,” says Paul Lacey, the managing director for Europe, Middle East and India for Aimia, which owns and operates Air Miles Middle East.
If you go
The Flights
Emirates and Etihad fly direct to Johannesburg from Dubai and Abu Dhabi respectively. Economy return tickets cost from Dh2,650, including taxes.
The trip
Worldwide Motorhoming Holidays (worldwidemotorhomingholidays.co.uk) operates fly-drive motorhome holidays in eight destinations, including South Africa. Its 14-day Kruger and the Battlefields itinerary starts from Dh17,500, including campgrounds, excursions, unit hire and flights. Bobo Campers has a range of RVs for hire, including the 4-berth Discoverer 4 from Dh600 per day.