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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

UFS can lead SA in race relations - Ramphele

2010-08-06

Pictured are: Dr Boesak and Dr Ramphele
Photo: Mangaliso Radebe

The University of the Free State (UFS) could well be a perfect model of excellence in race relations that the whole of South Africa could emulate.

This was said by Dr Mamphela Ramphele, the first African to be a Managing Director of the World Bank, during the Anti-Racism Network in Higher Education (ARNHE) Colloquium held at the UFS recently.

“Healing circles need to be constructed on this campus to address issues raised by the Reitz incident,” she said.

“You might yet be the pioneer of what needs to happen on a nation-wide level.

“Can we confidently commit today to go on this quest for a true humanity and walk together as fellow citizens and strive for a more human face for our society? That is our challenge. That is what the UFS is called to give leadership to.”

“It is this human face which has the power to liberate us from the body of death and strengthen us in our struggle for meaningful life together in South Africa,” added one of the main speakers, Dr Allan Boesak, a cleric and former anti-apartheid activist.

However, said Dr Ramphele, this could only be achieved if all South Africans, black and white, abandoned the fear for each other that was hindering, if not stalling, progress in this regard.

“Fear of each other is the most important impediment to the sustainability of our journey into a society united in our diversity,” she said.

“People in this country are afraid to stand up and be counted, including many vice-chancellors and clerics. They are afraid of being seen to be difficult, and that is a major problem. Fear is the most destructive emotion that you can have because it makes you really incompetent and unable to respond to challenges.”

She said the biggest impediment, though, to ending racism was denial. “White people deny vehemently that they are or have ever been racist,” she said.

“We need to go through a process of acknowledging our wounds and scars from our racist past and present missteps in public policy.”

“Instead of saying they are sorry, those who are conscious of their whiteness should rather say what they are sorry for,” said another main speaker, Prof. Dennis Francis, the Dean of the Faculty of Education at the UFS.

On the other hand, according to Dr Boesak, blacks were and still are, to a large extent, also to blame for their own ongoing oppression. “The key here was the acknowledgement of our sheepish timidity, our complicity,” he said.

The Chairperson of ARNHE, Prof. Norman Duncan, had this to say: “If we are to confront and eradicate racism in higher education institutions, we should not do so to create comfort zones for ourselves.”

The theme of this ARNHE Colloquium was Black consciousness and those conscious of their whiteness. It was presented by the International Institute for Studies in Race, Reconciliation and Social Justice at the UFS.

Media Release:
Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
6 August 2010

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