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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

Alumni Voices heralds in festive season with Karl Jenkins production
2013-11-20

The Alumni Voices Chamber Choir, affiliated to the Alumni office of the University of the Free State, heralds in the festive season with a Christmas production with the Drakensberg Boys’ Choir.

Date: 23 and 24 November 2013
Time: 19:30 (23 November 2013)
16:00 (24 November 2013)
Venue: Odeion
Cost: R120

The production by the two choirs, under the direction of Leona Geldenhuys (Alumni Voices) and Johann van der Sandt (Drakensberg Boys’ Choir), is a compilation of new Christmas music by Karl Jenkins.

Two cycles, Stella Natalis, made up from new compositions, and Joy to the World, compiled from well-known traditional Christmas music, are combined in this production.

Stella Natalis (Star of Birth or Star of Origin) celebrates the different aspects of Christmas – Celebro – celebrations, Lullay – the sleeping child, Dona nobis pacem – message of peace, and Jubilate Deo – thanksgiving, forms part of the programme.

The part: JOY TO THE WORLD also includes traditional Christmas music. This fresh and vibrant arrangement of In dulci jubilo, Go Tell it on the Mountain, Silent Night, O Jesu so sweet, Son of Maria and The Virgin Mary had a Baby boy, all new arrangements by Karl Jenkins, promises to be an exciting experience.

This work, which conveys the Christmas message of peace, goodwill and compassion, as well as new beginnings, evokes a colour palette of sound filled with exciting musical inspiration.

The work was written for mixed choir, as well as for an optional choir suitable for children’s voices, trumpet soloist, keyboard, percussion and string ensemble.

The trumpet soloist is Paul Loeb van Zuilenburg, with Johan Cromhout as pianist. Members of the Free State Symphony Orchestra complete the picture.

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