Université de Neuchâtel

Indo-Pacific parrotfish exert partner choice in interactions with cleanerfish but Caribbean parrotfish do not

Soares, Marta C ; Cardoso, Sónia C ; Nicolet, Katia J ; Côté, Isabelle M ; Bshary, Redouan

In: Animal Behaviour, 2013, vol. 86, no. 3, p. 611-615

Cooperation theory puts a strong emphasis on partner control mechanisms that have evolved to stabilize cooperation against the temptation of cheating. The marine cleaning mutualism between the Indo-Pacific bluestreack cleaner wrasse, Labroides dimidiatus, and its reef fish ‘clients’ has been a model system to study partner control mechanisms and counterstrategies. These cleaners...

Université de Neuchâtel

Cortisol mediates cleaner wrasse switch from cooperation to cheating and tactical deception

Soares, Marta C ; Cardoso, Sónia C ; Grutter, Alexandra S ; Oliveira, Rui F ; Bshary, Redouan

In: Hormones and Behavior, 2014, vol. 66, no. 2, p. 346-350

Recent empirical research, mostly done on humans, recognizes that individuals' physiological state affects levels of cooperation. An individual's internal state may affect the payoffs of behavioural alternatives, which in turn could influence the decision to either cooperate or to defect. However, little is known about the physiology underlying condition dependent cooperation. Here, we...