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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

Active citizenship key to building healthier communities
2014-09-22

Photo: Mamosa Makaya

The Office of Community Engagement in collaboration with Bloem Shelter, hosted a three-day Indaba on active citizenship. The focus of the event was to engage local government leaders, NGOs and social services groups on creating a society that is healthier, safer and more informed.

The over-arching theme of the Indaba centred on the strengthening of family structures, social and health service delivery, spiritual healing and counselling. Amongst the various speakers was Rev Jennifer Samdaan, Minister in the Methodist Church and community activist. During her presentation, ‘Youth, Women and Children at Risk in South Africa', she highlighted the challenges that women and youth in townships and rural areas deal with in their daily lives. One example is physical and sexual violence while commuting to school and work. Rev Samdaan’s organisation has been instrumental in engaging municipal authorities in the region of Kokstad to provide security and lighting on roads where women are most vulnerable to violent attacks as they commute from work.

Community workers discussed their contributions in the fields of marital and family counselling and mental health support services. They discussed the benefits of their collaboration with local judicial bodies and other community leaders to render services to victims of domestic violence.

Rev Billyboy Ramahlele, Director in the Office of Community Engagement, emphasised the role of leadership and the responsibility of political leaders and citizens alike to ensure accountability in the quest to build a healthier society.

Vanessa Booysen, a neonatal consultant for Newborn Care in South Africa, demonstrated the importance of bonding between mothers and their babies. She called attention to the negative effects on the development of babies when separated from their mothers and the future challenges this causes. Modern medicine also leads to fewer women giving birth naturally. Booysen stressed that "it matters how we are born". She encouraged health practitioners to go back to basics in maternal care to lessen the negative effects that pass onto children into adulthood.

The workshop concluded with an exhibition by various groups that showcased the information resources and services offered to communities in the Free State.

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