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Students hear from textbook writer about conservation genetics

02 August 2022 | Story Leonie Bolleurs | Photo Leonie Bolleurs

Genetics lecture — 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

Dr Khotso Mokhele joins ranks of distinguished Chancellors

2010-11-21

Attending the inauguration ceremony are, from the left: Mr Pule Makgoe, MEC for Education in the Free State and member of the UFS Council; Judge Ian van der Merwe, Chairperson of the UFS Council; Dr Khotso Mokhele, newly inaugurated Chancellor of the UFS; and Prof. Jonathan Jansen, Vice-Chancellor and Rector of the UFS.
Photo: Dries Myburgh

Dr Khotso Mokhele joined the ranks of distinguished Chancellors of the University of the Free State (UFS) with his inauguration as the new Chancellor of the institution at a ceremony on Friday, 19 November 2010.

The lustrous ceremony took place on the Main Campus in Bloemfontein and was attended by hundreds of guests from all over South Africa.

Dr Mokhele said in his speech: “I am excited to have been invited by the UFS to join its community at the time when it is attempting to reinvent itself into an institution that will be counted amongst those that will shape the local, regional, national will, and by so doing, contribute to the shaping of an African will.”

Dr Mokhele follows in the footsteps of Dr Franklin Sonn, former Ambassador of South Africa in the United States of America and receiver of many awards, acknowledgements, and honorary doctorates, who retired earlier this year. Dr Sonn was preceded by Ms Winkie Direko, former premier of the Free State.

His acceptance of the role of Chancellor is a great honour for the UFS.

According to Prof. Jonathan Jansen, Vice-Chancellor and Rector of the UFS, it is a proud moment to welcome someone from the Province as the Chancellor of this university. With his strong academic values and deep sense of human compassion, Dr Mokhele is one of but a few uncompromising leaders. He is also an inspiring, determined pioneer and a role model to all our students.

Few have done as much to guide the development of science in South Africa since democracy in 1994 as Dr Mokhele. His vision and actions as a senior science manager have been guided by his deep conviction that for a truly democratic society to emerge in South Africa all people must be empowered to be its architects and must have unhindered access to those careers upon which our economy is built.

Dr Khotso Mokhele was born and raised in Bloemfontein. After matriculating from the Moroka High School he went on to study at Fort Hare, where he graduated with a B.Sc. in Agriculture, winning the Massey-Ferguson award for the best student in that field. As a recipient of the prestigious Fulbright-Hays Scholarship, he entered the University of California in Davis where he took a M.Sc. and a Ph.D. degree, both in Microbiology. He was awarded post-doctoral fellowships at the Johns Hopkins University School of Medicine in Baltimore, Maryland, and at the University of Pennsylvania, Philadelphia.

Dr Mokhele returned to South Africa in 1987, set on becoming a top-class academic and researcher. He held lecturing posts at the Universities of Fort Hare (1987-1989) and Cape Town (1990-1992). In 1992 he joined the Foundation for Research Development (FRD) as one of its Vice-Presidents. He succeeded to its presidency in 1996 and then from 1999 to 2006 became the first President of the National Research Foundation (NRF). He successfully merged the FRD and the Centre for Science Development of the Human Sciences Research Council. Under his visionary leadership the NRF has come to play a pivotal role in the development agenda of the country. He was also instrumental in the establishment of the South African Academy of Sciences serving as its founder president (1996-1998).

Dr Khotso Mokhele's contribution to science in South Africa has received wide recognition locally and abroad. He has received nine honorary doctorates. He was made a Chevalier of the Legion of Honour by the President of France in recognition of his personal efforts in strengthening scientific ties between France and South Africa, and was appointed a director of the Salzburg Seminar, an institution focused on global change, and subsequently a member of its Council of Senior Fellows.

He also serves on the boards of major companies such as Implats, Adcock Ingram and Afrox.

Complete speech (Pdf)

Media Release
Issued by: Lacea Loader
Director: Strategic Communication (actg)
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl@ufs.ac.za19 November 2010

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