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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

From lock to SA prop in six months
2017-08-29

 Description: Kwenzo Bloze Tags: Kwenzo Blose, KovsieSport’s, Junior Sportsman of 2016, World Championship, Shimla 

One of the rugby players that Kwenzo Blose looks
up to, is the Cheetah prop Ox Nche. He and Nche
are both residents of the Vishuis men’s residence.
Photo: Jóhann Thormählen


If someone told Kwenzo Blose of Glenwood High School that he would scrum as prop for the South African U/20 rugby team at the Junior World Championship, he would probably have thought it was a joke. At that time he still played lock, but only six months after the shift to prop, he represented his country at the tournament in Manchester, England.

Apart from this, KovsieSport’s Junior Sportsman of 2016 – who will probably be playing in his second World Championship this year, only became a Shimla in 2017. Last year he was still playing for the University of the Free State’s Young Guns.

Beast also played lock at first
André Tredoux, former UFS and Cheetah talent scout, said the Springbok prop Beast Mtawarira also played lock and flank at school. “Glenwood competed in the Wildeklawer Super Schools Tournament. Apparently coach André spotted me there and talked to Stephan Jacobs, another UFS coach. At that stage, I still played lock and they told each other that they had to get me to the Free State and convince me to play prop. I knew nothing of these plans,” said Blose.

According to this Paulpietersburg-native, who is 1,87 m tall and weighs 112 kg, he still has a lot to learn at prop. His greatest adjustments were in the scrums. “At prop you have to absorb the pressure of the rest of the pack in order to provide your team with front-foot ball,” he said. He said Jacobs, who was his Young Guns scrum coach, and Daan Human, the Cheetah scrum doctor, has helped him a lot.

An avid student off the field
Even though rugby has opened doors for the loose head who is studying LLB Law, he maintains a good balance. “The main reason why I came to university is to study. To be playing rugby and performing well is a great blessing, but I also have to prioritise and make sure that I obtain my degree.”

This year’s Junior World Championship was from 31 May to 18 June in Tbilisi, Georgia. Last year, the Baby Boks finished in a disappointing fourth place, but Blose believes they can improve on this. “If everything goes according to plan and if some of the guys are playing again, we would have something like nine players who played in the 2016 tournament.”

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