Université de Neuchâtel

Adjustments of levels of cooperation in cleaner wrasse "Labroides dimidiatus" : the effects of an audience and satiation

Pinto, Ana Isabel ; Bshary, Redouan (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2015.

Cooperation, the mutual helping between unrelated individuals, is an evolutionary puzzle. This is because helping is often an investment that must yield future benefits in order to be under positive selection. Generally, natural selection favours individuals that perform self-serving behaviour, and hence cheating is a major conceptual issue. However, examples of cooperation are abundant in...

Université de Neuchâtel

Partner control mechanisms in repeated social interactions

Wubs, Matthias ; Bshary, Redouan (Dir.) ; Lehmann, Laurent (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2017.

Individuals that interact socially regularly have to make decisions whether to help another individual (provide some payoff benefit, possible at a personal payoff cost) or not. Here, a pair of individuals is best off if both individuals help each other, but a single individual may gain a relative payoff advantage by not helping (defecting) while the partner does choose to help, thus creating a...

Université de Neuchâtel

Strategic social behaviour in wild vervet monkeys

Borgeaud, Christèle ; Bshary, Redouan (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2016.

In comparison to other vertebrates, primates have a large brain in relation to their body size. It has been hypothesised that the degree of social complexity is the major predictor for such variation. In group living species, individuals face various social challenges which can include finding the right balance between cooperation and competition with other group members. Thus to survive and...

Université de Neuchâtel

The ecology underlying decision rules of bluestreak cleaner wrasse during client interactions

McAfoose, Sharon ; Bshary, Redouan (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2017.

Cooperation is defined as a ‘helping’ behaviour that provides direct fitness benefits to other individuals. Such behaviours have long intrigued biologists, as it poses a problem for classic evolutionary theory, i.e. why should an individual perform a behaviour that is beneficial to other individuals? Indeed, an expansive body of work on evolutionary game theory, as well as, empirical studies,...

Université de Neuchâtel

Social strategies and tool use in wild corvids

Di Lascio, Felice Elias ; Bshary, Redouan (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2014.

Crows and ravens have attracted increasing attention because of the advanced cognitive capacities these birds seem to possess, which have earned them the nickname of “feathered apes”. Indeed, the work carried out in the last two decades has shown that corvids possess abilities that can rival those of monkeys and apes. Birds within this family tend to form long-term monogamous bonds, where...


Non-cooperative behavior in wireless networks

Félegyházi, Márk ; Hubaux, Jean-Pierre (Dir.)

Thèse sciences Ecole polytechnique fédérale de Lausanne EPFL : 2007 ; no 3791.

Université de Neuchâtel

L'éthique évolutionniste : de l'altruisme biologique à la morale

Clavien, Christine ; Schulthess, Daniel (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2008 ; Th.1986.

This work is a contribution to evolutionary ethics, a particular approach to ethical questions (origins of morality, metaethics, foundation of moral principles) that goes back to the second half of the 19th century and is inspired by evolutionary biology. Nowadays, evolutionary ethics has become a rich and complex interdisciplinary field that rests not only on Darwin’s ideas but on a vast range...

Université de Genève

Ville, développement durable et urbanitaire

Surchat Vial, Nicole ; Mariani, Ricardo (Dir.)

Thèse de doctorat : Université de Genève, 2006 ; Arch. 5.

Les situations de catastrophes sont de plus en plus fréquentes. Leurs conséquences sur les populations et sur les établissements humains s’aggravent de manière alarmante. La thèse développe une approche novatrice permettant de réexaminer les politiques traditionnelles en matière de secours et d’aide à la reconstruction. Elle postule l’indispensable contribution de l’urbanisme aux...