Voici les éléments 1 - 10 sur 11
- PublicationMétadonnées seulementPower and temptation cause shifts between exploitation and cooperation in a cleaner wrasse mutualism
- PublicationMétadonnées seulementArginine Vasotocin Regulation of Interspecific Cooperative Behaviour in a Cleaner Fish(2012)
;Soares, Marta ; ;Mendonca, Rute ;Grutter, Alexandra S.Oliveira, Rui F.
- PublicationAccès libreExperimental evidence that partner choice is a driving force in the payoff distribution among cooperators or mutualists : the cleaner fish case(2001)
;Grutter, Alexandra S.Supply and demand largely determine the price of goods on human markets. It has been proposed that in animals, similar forces influence the payoff distribution between trading partners in sexual selection, intraspecific cooperation and interspecific mutualism. Here we present the first experimental evidence supporting biological market theory in a study on cleaner fish, Labroides dimidiatus. Cleaners interact with two classes of clients: choosy client species with access to several cleaners usually do not queue for service and do not return if ignored, while resident client species with access to only one cleaning station do queue or return. We used plexiglas plates with equal amounts of food to simulate these behaviours of the two client classes. Cleaners soon inspected 'choosy' plates before 'resident' plates. This supports previous field observations that suggest that client species with access to several cleaners exert choice to receive better (immediate) service.
- PublicationMétadonnées seulementParasite distribution on client reef fish determines cleaner fish foraging patterns
- PublicationMétadonnées seulementFemale cleaner fish cooperate more with unfamiliar males(2012)
;Raihani, Nichola ;Grutter, Alexandra S.
- PublicationMétadonnées seulementAsymmetric cheating opportunities and partner control in a cleaner fish mutualism
- PublicationAccès libreCleaner fish cause predators to reduce aggression toward bystanders at cleaning stations(2008)
;Cheney, Karen L. ;Grutter, Alexandra S.Mutualisms, in which both participants gain a net benefit, are ubiquitous in all ecosystems, and the importance of understanding their broader ecological context has been demonstrated many times. Indirect effects of mutualisms may have important implications for surrounding ecosystems through changes in density, species composition, or behavior; however, the latter has been difficult to quantify. In fish cleaning mutualisms, cleaners benefit by removing and consuming ectoparasites from clients, whereas clients benefit from a reduction in parasite load. Cleaner fish are also thought to benefit from immunity to predation and use tactile stimulation as a preconflict management strategy to manipulate partners' decisions and to avoid being eaten by piscivorous client fish. Here we show, using a laboratory experiment, that the presence of cleaner fish resulted in nearby fish not involved in the cleaner–client mutualism experiencing less aggression (chases) from predatory clients. In addition, the rate that piscivorous clients chased prey was negatively correlated with the amount of tactile stimulation given to the predator by the cleaner. These data suggest that, in the laboratory, the risk of aggression from predators toward nearby prey fish was greatly reduced as a by-product of cleaner fish presence and tactile stimulation of predators by cleaner fish. These results raise the question of whether cleaning stations act as safe havens from predator aggression.
- PublicationMétadonnées seulementMale cleaner wrasses adjust punishment of female partners according to the stakes
- PublicationMétadonnées seulementCleaner fish Labroides dimidiatus recognise familiar clients(2002)
;Tebbich, S. ;Grutter, Alexandra S.