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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

Young researcher from UFS on SAYAS executive committee
2014-10-28



Dr Aliza le Roux
Photo: Sonia Small
Dr Aliza le Roux from the Department of Zoology and Entomology on the UFS’s Qwaqwa Campus is one of ten young scientists who was recently inaugurated as a new member of the South African Young Academy of Science (SAYAS). Not only was she inducted into the society this past October, but she was also elected to serve on the executive committee for SAYAS.

Dr Le Roux’s research focus is on cognitive ecology, behavioural ecology and zoology. She has expressed her excitement about the new position, and is already developing new ideas with her new colleagues on drawing more young people into the South African scientific community.

This position provides a regional and international platform to raise the profile of science in general, and Le Roux hopes to be active in SAYAS’s new mentorship collaboration with the New York Academy of Sciences, and to introduce new methods of scientific outreach using social media. Inspired by the students on the Qwaqwa Campus, Dr Le Roux hopes to specifically target relatively isolated rural campuses in SAYAS’s activities.

Prof Corli Witthuhn, Vice-Rector: Research at the UFS, said, “Aliza le Roux is an outstanding young scientist on our Qwaqwa Campus. I am very excited about the young researchers on our Qwaqwa Campus with Aliza as one of the leaders, and I am looking forward to what else they can achieve in the next five years.”

SAYAS was launched in October 2011 with 20 founding members as a mechanism to propel South Africa’s young scientists to fully participate in relevant local and international research and development agendas. It provides a national platform where leading young scholars from all disciplines in the country can interact, and also access international networking and career development opportunities.

SAYAS contributes primarily to the achievement of the national strategic priority of strengthening the skills and human-resource base of the country. Its particular niche is to focus on strengthening high-level skills among young scientists and the promotion of scientific excellence.


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