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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

Eight from UFS elected to ASSAf
2012-09-05

Eight UFS academics have been elected as members of the Academy of Science of South Africa (ASSAf). They follow in the footsteps of seven colleagues who already were elected as members of the Academy.

The new members are Prof. Driekie Hay, Vice-Rector: Academic; Prof. Melanie Walker, Senior Professor; Prof. Ian Phimister, Senior Professor; Prof. Pumla Godobo-Madikizela, Senior Professor; Prof. Lodewyk Kock, Outstanding Professor; Prof. Hugh Patterton, Department of Biotechnology; Prof. Heidi Hudson, Department of Africa Studies and Prof. Odireleng Ntwaeaborwa, Department of Physics.

ASSAf was established in 1996 with the mission of using science for the benefit of society. New members are elected after nomination by four existing members (at least two of whom do so from personal knowledge of the candidate).

ASSAf has some 350 members and represents South Africa in the international community of science academies.

UFS academics who are already members of ASSAf are Prof. Jonathan Jansen, Vice-Chancellor and Rector; Prof. Johan Henning, Dean: Faculty of Law; Prof. Hendrik Swart, Physics; Prof. André Roodt, Chemistry; Prof. Zakkie Pretorius, Plant Sciences; Prof. Max Finkelstein, Mathematics; Prof. James du Preez, Microbial, Biochemical and Food Biotechnology; Prof. Maryke Labuschagne, Plant Sciences; and Prof. Neil Roos of our Postgraduate School.

Prof. Aldo Stroebel is a founding member of the South African Young Academy of Science (SAYAS), the youth branch of ASSAf. SAYAS seeks to provide a voice to young scientists on international issues that interface with science.
 

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