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UFS biologists discover new tiny, white-thumbed bat species from Eswatini

13 October 2022 | Story NONSINDISO QWABE | Photo Rio Button

The Lowveld serotine bat, named Neoromicia hlandzeni.

Biological expeditions to the unexplored central highlands of Angola between 2016 and 2019 led to the discovery of a new tiny, white-thumbed bat species from Eswatini by Prof Peter John Taylor from the UFS Department of Zoology and Entomology and the Afromontane Research Unit (ARU), together with colleagues from the University of Eswatini (UNESWA) and other collaborators.

The bat species, named Neoromicia hlandzeni or the Lowveld serotine bat – after the Lowveld of Eswatini (eHlandzeni) – is the first new animal species to be discovered in Eswatini and given a siSwati name. The Lowveld serotine bat is tiny at four grams, has a distinctive white thumb pad, and occurs in Eswatini, South Africa, Zimbabwe, and Mozambique.

Bats make up a quarter of all mammalian biodiversity. With modern technology and the exploration of previously inaccessible regions of Africa, the rate of discovery of both animal and plant species is accelerating.

According to Prof Taylor, the Lowveld serotine bat is a new species to science. The specimen from which the species was named was collected in the lowlands of Eswatini in 2005. “Later collections of bats from the highlands of Angola, undertaken by myself and students, revealed the fact that the highland and lowland forms were actually different species. Since there was already a name for the highland bat, we needed to find a new name for the lowland bat from Eswatini and South Africa, hence it is called the Lowveld serotine bat,” he said.

The importance of integrative taxonomy, local collaboration, and biodiversity surveys

Prof Taylor is a research fellow of the National Geographic Okavango Wilderness Project, and the bat discovery took place during expeditions under the patronage of the Angolan government, the Wild Bird Trust, and the National Geographic Okavango Wilderness Project. He said the aim of the expedition was to explore the plants and animals of a wilderness area (the source of the Okavango) that had not been explored before.

The discovery also led to their paper being published in the scientific journal, the Zoological Journal of the Linnean Society, this month.

The publication, titled Integrative taxonomic analysis of new collections from the central Angolan highlands resolves the taxonomy of African pipistrelloid bats on a continental scale, showcases the importance of integrative taxonomy, local collaboration, and biodiversity surveys, as the description of this exciting new species would not have been possible without comparative genetic and morphological material from new collections in the poorly sampled central highlands of Angola.

Prof Peter Taylor with his students, Veli Mdluli and Alexandra Howard, working on bat research. Howard was one of the co-authors of the paper. (Photo: Supplied)

Afromontane regions as hotspots of bat speciation, diversity, and micro-endemism

Although Prof Taylor is the first author to describe this new species, the work was done with a multidisciplinary team of colleagues, students, and collaborators from the UFS, UNESWA, the University of Pretoria, the University of Venda, and Stellenbosch University, as well as the Durban Natural Science Museum and the Ditsong National Museum of Natural History, with support from the Angolan government, the Wild Bird Trust, and the National Geographic Okavango Wilderness Project.

“Describing a new species is an arduous task that can take years from discovery to publication. All the enormous collective efforts have shown the importance of collaborative biodiversity exploration using old and modern technologies, as well as the African ownership of this discovery,” Prof Taylor said.

Three of Prof Taylor's previous and current PhD students – all of them South African women – were part of this discovery process and are co-authors of the paper. All 14 co-authors in the team are African. Prof Taylor said the discovery adds a new species to the total bat list of 125 species for Southern Africa – at number 126.

News Archive

Eye tracker device a first in Africa

2013-07-31

31 July 2013

Keeping an eye on empowerment

"If we can see what you see, we can think what you think."

Eye-tracking used to be one of those fabulous science-fiction inventions, along with Superman-like bionic ability. Could you really use the movement of your eyes to read people's minds? Or drive your car? Or transfix your enemy with a laser-beam?

Well, actually, yes, you can (apart, perhaps, from the laser beam… ). An eye tracker is not something from science fiction; it actually exists, and is widely used around the world for a number of purposes.

Simply put, an eye tracker is a device for measuring eye positions and eye movement. Its most obvious use is in marketing, to find out what people are looking at (when they see an advertisement, for instance, or when they are wandering along a supermarket aisle). The eye tracker measures where people look first, what attracts their attention, and what they look at the longest. It is used extensively in developed countries to predict consumer behaviour, based on what – literally – catches the eye.

On a more serious level, psychologists, therapists and educators can also use this device for a number of applications, such as analysis and education. And – most excitingly – eye tracking can be used by disabled people to use a computer and thereby operate a number of devices and machines. Impaired or disabled people can use eye tracking to get a whole new lease on life.

In South Africa and other developing countries, however, eye tracking is not widely used. Even though off-the-shelf webcams and open-source software can be obtained extremely cheaply, they are complex to use and the quality cannot be guaranteed. Specialist high-quality eye-tracking devices have to be imported, and they are extremely expensive – or rather – they used to be. Not anymore.

The Department of Computer Science and Informatics (CSI) at the University of the Free State has succeeded in developing a high-quality eye tracker at a fraction of the cost of the imported devices. Along with the hardware, the department has also developed specialised software for a number of applications. These would be useful for graphic designers, marketers, analysts, cognitive psychologists, language specialists, ophthalmologists, radiographers, occupational and speech therapists, and people with disabilities. In the not-too-distant future, even fleet owners and drivers would be able to use this technology.

"The research team at CSI has many years of eye-tracking experience," says team leader Prof Pieter Blignaut, "both with the technical aspect as well as the practical aspect. We also provide a multi-dimensional service to clients that includes the equipment, training and support. We even provide feedback to users.

"We have a basic desktop model available that can be used for research, and can be adapted so that people can interact with a computer. It will be possible in future to design a device that would be able to operate a wheelchair. We are working on a model incorporated into a pair of glasses which will provide gaze analysis for people in their natural surroundings, for instance when driving a vehicle.

"Up till now, the imported models have been too expensive," he continues. "But with our system, the technology is now within reach for anyone who needs it. This could lead to economic expansion and job creation."

The University of the Free State is the first manufacturer of eye-tracking devices in Africa, and Blignaut hopes that the project will contribute to nation-building and empowerment.

"The biggest advantage is that we now have a local manufacturer providing a quality product with local training and support."

In an eye-tracking device, a tiny infra-red light shines on the eye and causes a reflection which is picked up by a high-resolution camera. Every eye movement causes a change in the reflection, which is then mapped. Infra-red light is not harmful to the eye and is not even noticed. Eye movement is then completely natural.

Based on eye movements, a researcher can study cognitive patterns, driver behaviour, attention spans, even thinking patterns. A disabled person could use their eye-movements to interact with a computer, with future technology (still in development) that would enable that computer to control a wheelchair or operate machinery.

The UFS recently initiated the foundation of an eye-tracking interest group for South Africa (ETSA) and sponsor a biennial-eye tracking conference. Their website can be found at www.eyetrackingsa.co.za.

“Eye tracking is an amazing tool for empowerment and development in Africa, “ says Blignaut, “but it is not used as much as it should be, because it is seen as too expensive. We are trying to bring this technology within the reach of anyone and everyone who needs it.”

Issued by: Lacea Loader
Director: Strategic Communication

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