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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

Gendered violence and women’s citizenship in Africa
2014-05-23

 
Prof Takyiwaa Manuh

Prof Takyiwaa Manuh celebrated both Africa Day and her birthday with the UFS on 22 May 2014.

Being the guest speaker at the Africa Day Memorial Lecture, Prof Manuh discussed how gendered violence and the lack of women’s true citizenship in Africa still hinder the Pan-African ideal. She asked the question: if African issues get less worldwide attention, how much less attention do African women get?

“Africa Day offers us an opportunity to revisit the Pan-African ideal and aspiration for total national liberation, equality and self-worth,” Prof Manuh said.

“This ideal has envisaged full citizenship with the enjoyment of rights and resources for the people of Africa to live a dignified and fulfilling life. Yet, the conceptions of citizenship that have emerged in several African countries do not fully incorporate women and girls.”

The lecture explored the policing of women’s bodies and sexualities and how their enjoyment of rights is undermined – often under the pretext of culture. Often families, communities, states, religious bodies and culture work collaboratively to mold African women into the patriarchal image of disciplined and virtuous. The epidemic of violence against females negates their fundamental human rights and their claim to full citizenship and protection within their states.

The lecture also reviewed recent efforts including law reform, legislation and actions by activists. “The African Union and the UN need to confront these violations and suggest a robust agenda for more effective exercise of women’s citizenship rights and convergence towards the Pan-African ideal.”

Prof Manuh is currently Director: Social Development Policy Division of the United Nations Economic Commission for Africa in Addis Ababa, Ethiopia.

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