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13 May 2022 | Story Alicia Pienaar
Prof Vetrik
Prof Tomas Vetrik.

The Dean of the Faculty of Natural and Agricultural Sciences, Prof Danie Vermeulen, has the pleasure of inviting you to the inaugural lecture of Prof Tomas Vetrik. 

Topic: Extremal graph theory 

Event Details:
Date: 19 May 2022
Time: 17:30
Venue: Equitas Auditorium, UFS Bloemfontein Campus

RSVP:  Ms Marinda Venter on +27 51 401 2691 or email: VenterSM@ufs.ac.za  on or before Tuesday 17 May 2022.

Light refreshments will be served after the inaugural lecture. 


More about the speaker:

Tomas Vetrik received two scholarships from foreign countries during his PhD study. He spent one semester of his PhD study at the Vienna University of Technology in Austria, and two semesters at the Technion – Israel Institute of Technology. He was the only postgraduate student from Slovakia to receive a scholarship from the Israeli government in 2006. Tomas Vetrik joined the University of the Free State in 2014, after his postdoctoral research at the University of KwaZulu-Natal and working at the UniversityPretoria. His research area is graph theory. He is mainly focusing on the degree-diameter problem, graph indices, and metric dimension of graphs. He is an NRF-rated researcher and has produced about 75 research papers (approximately 25 of them as a single author).

Three PhD students and three MSc students have completed their studies under his supervision. He has presented seminar talks at 24 universities from 15 different countries. Please take note of our COVID-19 health and safety protocols (https://www.ufs.ac.za/return-to-campus ) when visiting the UFS campuses.


Please take note of our COVID-19 health and safety protocols (https://www.ufs.ac.za/return-to-campus ) when visiting the UFS campuses. 

News Archive

Study shows that even cheating monkeys alter their behaviour to avoid detection and punishment
2013-03-12

 

Dr Le Roux sharing a moment with the geladas (Theropithecus gelada).
Photo: Supplied
11 March 2013

A recent article headed by Dr Aliza le Roux from the University of the Free State Qwaqwa Campus’ Department of Zoology and Entomology, asserts that cheating and deception is not only a human phenomenon - it is also found in non-human animals.

“Our specific study investigated cheating and punishment in geladas. While human beings are known to deceive one another, and punish cheaters that get caught, it is actually very rare to find proof of this kind of behaviour in non-human animals,” said Dr Le Roux.

“We don't know if this is because humans are uniquely deceitful, or if it is just that animals deal with cheating differently. Our study was therefore the first to demonstrate that gelada males and females try to deceive their partners when they are cheating on them. This means they try to hide their unfaithful behaviour.” This is therefore the first investigation to document tactical deception in primates living in a natural environment.

“We also showed that the cuckolded males then punish the cheaters, but could not determine if the punishment actually caused cheaters to stop cheating,” said Dr Le Roux.

This on-going and long-term study continues to observe the population of wild geladas in the Simien Mountains National Park in Ethiopia. The study investigates primate hormones, cognition, genetics, social behaviour and conservation, and is done in collaboration with the Universities of Michigan and Pennsylvania.

The full version of the article can be accessed on (http://www.nature.com/ncomms/journal/v4/n2/full/ncomms2468.html).


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