In South Africa, biologists and scientists have come up with a new way to deter poaching and protect rhinos’ horns. Previously, rhinos were often de-horned to discourage poachers, but this practice disrupted their social structures. However, at a nursery in Limpopo, rhinos have been implanted with radioactive isotopes in their horns. This radiation can be detected at border crossings, helping to identify anyone who has handled a rhino horn.
The radioactive isotopes remain on the horn even if the tracker is removed, making it easier to track and intercept trafficked horns. Researchers at the University of the Witwatersrand’s Radiation and Health Physics Unit injected 20 rhinos with these isotopes as part of the project. Professor James Larkin, who heads the initiative, explained that this method utilizes a global network of radiation monitors designed to prevent nuclear terrorism.
Professor Nithaya Chetty, the dean of the science faculty at Witwatersrand, assured that the radioactivity dosage used on the rhinos is minimal and extensively tested for any negative impact on the animals. While elephant ivory is often sought after for its use in sculptures, rhino horn is trafficked to Asia for its supposed medicinal properties.
Given the ongoing threat of poaching and the limitations of existing prevention methods, innovative solutions like this are crucial. South Africa continues to lose a significant number of rhinos each year to poaching. By implementing new technologies like radioactive isotopes, researchers are hoping to turn the tide against poachers and protect these vulnerable animals.