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02 August 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Alistair Naidoo, second-year master’s student in Conservation Genetics and full-time technician in the Department of Genetics; Prof Paul Grobler, Head of the Department of Genetics; Prof Gordon Luikart; and Hannah Janse van Vuuren, third-year master’s student in Conservation Genetics.

It is an important and exciting time to be doing research in conservation genetics. This is according to Prof Gordon Luikart, Professor of Conservation Ecology and Genetics at the Flathead Lake Bio Station at the University of Montana in the United States. 

Prof Luikart, whose primary research focus is the application of genetics to the conservation of natural and managed populations, recently delivered a lecture, The Expanding Role of Genetics/omics in Wildlife Research and Conservation, on the Bloemfontein Campus of the University of the Free State (UFS). The lecture, hosted by the Department of Genetics, was attended by a group of students and lecturers in conservation and a number of related fields. 

He is one of the leading scientists in the field of conservation genetics, including integration of genomics in conservation projects. He is also co-author of the textbook Conservation and the Genomics of populations – the current prescribed textbook for GENE3744.

Species threatened with extinction

In 2008, the International Union for Conservation of Nature (IUCN) stated that approximately 10-20% of all vertebrate and plant species are threatened with extinction over the next few decades. In 1984, American biologist Edward O Wilson also said that it will take millions of years to correct the ongoing loss of genetics and species diversity caused by the destruction of natural habitats. “This is the folly our descendants are least likely to forgive us.”

Prof Luikart is of the opinion that genetics has enormous potential to help manage wildlife and prevent extirpation. “My research works to realise this potential and help wildlife managers conserve populations and ecosystems,” he says. 

Conservation managers and biologists have understood the risks of inbreeding for more than 100 years. In his lecture, one of the aspects of genetic conservation he focused on, was the negative effects of inbreeding and how this can be reversed using genetic rescue. 

With the genetic rescue study, they found that the gene flow into recently isolated populations can increase individual fitness and population growth. He proposed that conservation managers should consider genetic principles and rescue as practical and important tools. 

Prof Luikart also provided a list of information that can be retrieved from molecular genetic data to help conservation managers. This includes intel on census and effective population size, gene flow and dispersal, local adaptation and selection, forensics, genetic identification and law enforcement, and disease ecology and transmission. 

Non-invasive genetic monitoring

In terms of detecting gene flow, he focused on a study about non-invasive genetic monitoring that was conducted in the Yellowstone Park. Prof Luikart and a group of students collected the shed hair and faeces of the grizzly bear, obtained from trees and hair traps, which were used as a source of DNA. 

They established, for instance, that inbreeding depression is more common and stronger than previously thought in natural populations. Genetic monitoring, using non-invasive methods as described, has been found to be an effective tool that conservation managers should consider for detecting inbreeding and loss of genome-wide variation.

His research on the bighorn sheep, the alpine ibex, and the black bear informed most of the findings he discussed during his lecture.

News Archive

#Women'sMonth: Lack of HIV education still affects children
2017-08-17

Description: Nickie Goedhals Tags: Dr Nickie Goedhals, Medical Microbiology and Virology, The Lancet, transmission of HIV, National Research Foundation 

Dr Nickie Goedhals, Senior Lecturer and Pathologist
in Medical Microbiology and Virology at the UFS.
Photo: Sonia Small



“Despite all the advances in the management and prevention of HIV, children still become infected every day, often due to lack of education and access to health care.” This is according to Dr Nickie Goedhals, Senior Lecturer and Pathologist in Medical Microbiology and Virology at the University of the Free State (UFS).

Study published in UK medical Journal 
A case study she was part of and published in the UK medical journal The Lancet in 2012, demonstrates the transmission of HIV to a child through surrogate breastfeeding. This study is one of the many highlights in the young researcher’s career. She received her first rating from the National Research Foundation (NRF) in 2017 for the work she has done in Medical Virology over the past eight years.

According to the above-mentioned study, only about 1% of infants in South Africa are being breastfed by a surrogate. However, results from a study in the Free State showed that shared breastfeeding by a non-biological caregiver was the most important factor associated with HIV infection in discordant mother-child pairs. Therefore, continued education about the risk of HIV transmission is needed.

Dr Goedhals is also continuing with research on HIV by looking at HIV drug resistance. She is in the process of starting new projects focusing on HIV infection and drug resistance in infants.

PSP helped with NRF-rating
She says, although her NRF Y2-rating is the starting point of a research career, it shows that she is heading in the right direction, and it “gives access to research funds through the NRF for future projects.” Other important research she conducted was on Crimean-Congo haemorrhagic fever – the study for her PhD.

The Prestige Scholars Programme (PSP) at the UFS is the reason that she applied for the rating. “With all the service delivery, teaching, and administrative responsibilities of academic medicine, it is easy to lose focus. The PSP has really helped to create a focused and stimulating environment for research.” According to her, the PSP also provides access to a network of peers and senior staff at the UFS, as well as exposure to national and international experts.

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