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18 September 2019 | Story Leonie Bolleurs | Photo Dr Francois Deacon
Rhino Conservation
Should the ban on trade in rhino horn be lifted and South Africa could generate financial incentives, a large percentage of the funds should be allocated towards the conservation of the Java, Sumatra and Indian rhino.

Water, cold, thirst, volcanoes …. and poaching, are causing the death of rhinos across the globe. 

Recently, a group of scientists and rhino activists met at the University of the Free State (UFS) to discuss the plight of rhinos in South Africa. Bringing an international perspective to the colloquium on global rhino conservation, were three delegates from Indonesia who are working with the most endangered rhinos on earth – the Javan and Sumatra rhinos. 

Dr Rudi Putra, a biologist, received a Goldman Environmental Prize in 2014 for his efforts to save the Sumatra rhinos – of which an estimated 65 individuals are left in the Gunung Leuser National Park. Muhamnad Syamsudin is responsible for a 30-person rhino protection unit, which has not lost one rhino to poaching in Ujung Kulon National Park in 19 years. The third person from the Indonesian delegation was Dr Firmanto Noviar Suwanda, a lead scientist in rhino observation data, with a 30-person rhino monitoring unit, also in Ujung Kulon National Park.

Also presenting at the colloquium, were researchers from an inter-disciplinary team at the UFS, who are working together to establish a rhino conservation model through research and teaching.

The colloquium was convened by the UFS.

Rhino Conservation Colloquium

At the colloquium to discuss the conservation of rhinos, were from the left: Dr Francois Deacon, Muhamnad Syamsudin
(responsible for a 30-person  rhino protection unit – not losing one rhino to poaching in  19 years in Ujung Kulon National Park),
Dr Rudi Putra (biologist who received a Goldman Environmental Prize in 2014 for his efforts to save the Sumatra rhinos), Dr Firmanto Noviar Suwanda
(lead scientist on the rhino observation data, with a 30-person rhino monitoring unit, 
also in Ujung Kulon National Park),  and Dr Willem Daffue. Photo: Charl Devenish

Rhino revolution 

According to Dr Willem Daffue, a veterinarian from Kroonstad, the world needs a rhino revolution. “What we have been doing, is not working,” he said.

South African rhino farmers own almost half of the rhino population in the country. Dr Daffue shared facts on rhinos introduced to private captivity. “In the beginning, the animals died of thirst (the white rhino cannot lift its head to drink from a water trough), cold, and killing each other. And then poachers killed them …”

In 2009, South Africa saw an unprecedented spike in horn poaching, resulting in CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) implementing a ban on the sale of rhino horn within South Africa. The international sale of rhino horn – in an attempt to halt the unrelenting slaughter of rhinos in Africa and Asia – was already banned by CITES in 1977.

Role players agree that banning the trade in rhino horn is not the answer. The status quo is not working. 

For two weeks after the colloquium, Dr Deacon, Dr Daffue, and the Indonesians met with several role players in the rhino industry, including Dr Jana Pretorius (Rhino Pride Foundation), who established immediate, practical preventative measures to protect rhinos from poachers. Other people who were visited, were Dr Johan Marais (Saving the Survivors) who is tending injured endangered wildlife that have fallen victim to poaching, as well as Dr Danie Pienaar and Dr Markus Meyer (SANParks scientific services in the Kruger National Park’s Skukuza headquarters). They also knocked on the doors of Anton and Clive Walker (authors of Rhino Revolution) as well as Petronel Nieuwoudt (Care for Wild Rhino Sanctuary NPC), who is one of the few people worldwide who specialise in the care of orphaned rhinos.

“All role players feel that if they could sell the horns, they could easily afford to keep the animals secure.  And the horns are harvestable. We just trim them – as with sheep's wool. They grow back at up to 10 cm (4 inches) a year,” explained Dr Deacon. 

“Decision making, specifically about legalising the trade in rhino horn, needs to change. Involved parties feel that countries must decide, or more specifically, the role players in the industry – people with a responsibility towards the animals. It must not be up to CITES,” he said. 

Rhino Conversation project
For two weeks after the colloquium, Dr Deacon, Dr Daffue, and the Indonesians met with several role players in the rhino industry.
Photo: Hester de Beer


Safety for all rhinos


CITES met at the same time that the UFS team hosted the Indonesian party. “The timing of the trip was perfect, because CITES and the ban was being discussed. The status quo remains, however, as the ban on rhino-horn trade was not lifted,” said Dr Deacon.”

“It became apparent – we simply will not allow trade of South African rhino horn if we cannot secure the wellbeing and a safe haven for the Java, Sumatra, and the Indian rhino. We strongly discourage any sort of trade if one species is favoured while the others are facing a dark future,” stated Dr Deacon.

They proposed to different stakeholders that, should the ban on trade in rhino horn be lifted and South Africa could generate financial incentives, a large percentage of the funds should be allocated towards the conservation of the three Asian rhinos.

More research

At the UFS, the interdisciplinary team is continuing to work on research to breed a hardened animal through the project ‘Ecological and biological factors regulating rhino in captive environments.’ They are in the process of collecting data from 750 rhinos across South Africa. Several members of the team presented at the colloquium. 

Prof Paul Grobler from the Department of Genetics informed attendees on the role of genetics in rhino protection, focusing on touch DNA. He said it only takes seven to eight cells to amplify touch DNA that could link a perpetrator to a crime scene. With rhino poaching, touch DNA can be applied on the skin of the animal by collecting skin cells with tape lifting or swabs. 

Rolene Grobler, also from the UFS Department of Animal, Wildlife and Grassland Sciences, talked about how research on IVF, surrogacy, and cryopreservation of semen and embryos could be considered to save the rhino. 

Dr Hennie Butler from the UFS Department of Zoology and Entomology specifically focused on the behaviour of rhinos after dehorning or trimming of the horns. “Losing their horns will have an effect. Research has shown that the animals are more stressed, affecting birth rates, a change in habitat, and their social behaviour within bigger groups.” 

Also talking at the colloquium, were Dr Frans O'Neill, who focused on the cholesterol of the animals, and Dr Gary Osthoff, who looked at the milk production of the animals.

Colloquim at UFS
The Rhino Conservation hosted at the UFS brought together international scientists and conservationist.
Photo:Charl Devenish



News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


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