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Bshary, Redouan

Nom
Bshary, Redouan
Affiliation principale
Fonction
Professeur ordinaire
Email
redouan.bshary@unine.ch
Identifiants
https://libra.unine.ch/handle/123456789/343
_
0000-0001-7198-8472

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  • Publication
    Accès libre
    Cooperation and deception: from evolution to mechanisms
    (2010)
    Brosnan, Sarah F.
    ;
    Bshary, Redouan 
    Nature is full of struggle, as predicted by the theory of evolution through natural selection, yet there are also paramount examples where individuals help each other. These instances of helping have been difficult to reconcile with Darwin's theory because it is not always obvious how individuals are working for their own direct benefit. Consequently, initial publications that offered solutions to subsets of the observed cases of helping, such as kin selection or reciprocity, are among the most influential and most cited papers in evolution/behavioural ecology. During the last few years, a wave of new studies and concepts has considerably advanced our understanding of the conditions under which individuals are selected to help others. On the empirical side, advances are due to stronger incorporation of the natural history of each study species and an emphasis on proximate questions regarding decision-making processes. In parallel, theorists have provided more realistic models together with an increased exploration of the importance of life history and ecology in understanding cooperation. The ideas presented by the authors of this volume represent, in many ways, the revolutionary new approach to studying behaviour which is currently underway.
  • Publication
    Accès libre
    The cleaning goby mutualism: a system without punishment, partner switching or tactile stimulation
    (2008)
    Soares, Marta C.
    ;
    Côté, Isabelle M.
    ;
    Cardoso, S.C.
    ;
    Bshary, Redouan 
    In the cleanerfish–client mutualism involving the Indo-Pacific cleaner wrasse Labroides dimidiatus and its reef fish clients, mechanisms such as ‘tactile stimulation’, partner switching and punishment are used by clients to control cheating by cleaners. We sought to establish whether these behaviours are general features of cleaning mutualisms by examining their presence in interactions between Caribbean cleaning gobies (Elacatinus spp.) and their clients. The cleaning goby–client mutualism bears several similarities to the cleaner wrasse system: clients visit cleaners frequently to have their ectoparasites removed while cleaners depend heavily on these visits for food, and cheating by cleaning gobies is also prevalent. However, our data revealed striking differences between the two cleanerfish systems: clients did not seem to attempt to control cheating by cleaning gobies and cleaning gobies did not perform tactile stimulation on their clients. We suggest three hypotheses that might explain these major differences between both systems, based on differences in mutual dependence between cleaners and clients or cognitive ability of cleaners, differences in costs of being cheated and differences in foraging preferences by cleaners. Interactions between L. dimidiatus and its clients should probably not be seen as the ‘standard’ marine fish cleaning mutualism.