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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

2011 Leadership group meets for the first time

2011-08-01

Photo: Hannes Pieterse

The long application process, panel interviews and nail-biting wait finally came to an end the past week, when the cream of our first-year class of 2011 gathered in the Scaena Theatre on our Bloemfontein Campus, for their first group meeting as the selected Leadership for Change cohort.

These 150 students, from all our faculties, will over the following year be groomed to be leaders, not only at the university, but also in their respective fields and chosen careers.
The first group of students will depart for their respective universities in America and Europe on 22 September 2011, where they will spend two weeks. The second group of students will depart for universities in Japan in January 2012.

Although they have all passed a gruelling selection process, the real hard work is only starting now for these bright young students.

The programme will take place in four phases. During the preparation phase, which has now kicked off, students are prepared for the experience ahead, while being made aware of exactly what to expect from the programme.

In the study-abroad phase, students will be placed at 15 partner institutions in various countries, and will be divided into groups of six to twelve people. According to Prof. Aldo Stroebel, Director of International Academic Programmes, the groups will be diverse, in that there will be a mix of races, genders and study fields, which should guarantee dynamic interaction.

During the group’s first meeting this week, they were informed of the important goals of the Leadership for Change Programme, by Mr Rudi Buys, Dean of Student Affairs.

He imparted the gravity of their selection on the students by saying, “You may not get it yet, but I understand the reason we are all here. I understand that by looking at what you achieve after this programme, we can tell what the country could possibly achieve in the future. It is immensely moving to see the way you all carry yourselves, since I can see something special and unique in each of you.”
“You are all here, not because of which school you went to, or your race, or who your parents are, but because you all show potential to be something great.”

Prof. Stroebel reminded the group that despite the excitement that they all have about visiting universities in America, Europe and Asia, these visits should be seen as study trips.

“You may have three days to acquaint yourselves with the surroundings, but after that there will be very little sightseeing and a lot of hard work.”

They will participate in programmes designed by their respective host institutions, aimed at exposing them to different cultures, lifestyles and beliefs.

They will be accompanied by our staff, who Prof. Stroebel says will grow with the students, as they will be expected to guide the students through their tasks and assignments and interact with them on a daily basis.

Upon their return, there will be a debriefing phase, during which they will be expected to provide feedback on their experiences, as well as submit assignments which they will be assigned at their respective institutions.

The final phase is known as the impact phase, as this will see the students apply what they have learned in a positive manner and help drive the university to the future and to becoming a world-leading tertiary institution.

Media Release
1 August 2011
Issued by: Lacea Loader
Director: Strategic Communication
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: news@ufs.ac.za

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