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Full-Text Articles in Life Sciences
Vocal Expression Of Emotions In Mammals: Mechanisms Of Production And Evidence, Elodie Briefer
Vocal Expression Of Emotions In Mammals: Mechanisms Of Production And Evidence, Elodie Briefer
Communication Skills Collection
Emotions play a crucial role in an animal’s life because they facilitate responses to external or internal events of significance for the organism. In social species, one of the main functions of emotional expression is to regulate social interactions. There has recently been a surge of interest in animal emotions in several disciplines, ranging from neuroscience to evolutionary zoology. Because measurements of subjective emotional experiences are not possible in animals, researchers use neurophysiological, behavioural and cognitive indicators. However, good indicators, particularly of positive emotions, are still lacking. Vocalizations are linked to the inner state of the caller. The emotional state …
It Pays To Cheat: Tactical Deception In A Cephalopod Social Signalling System, Culum Brown, Martin P. Garwood, Jane E. Williamson
It Pays To Cheat: Tactical Deception In A Cephalopod Social Signalling System, Culum Brown, Martin P. Garwood, Jane E. Williamson
Communication Skills Collection
Signals in intraspecific communication should be inherently honest; otherwise the system is prone to collapse. Theory predicts, however, that honest signalling systems are susceptible to invasion by cheats, the extent of which is largely mediated by fear of reprisal. Cuttlefish facultatively change their shape and colour, an ability that evolved to avoid predators and capture prey. Here, we show that this ability is tactically employed by male mourning cuttlefish (Sepia plangon) to mislead conspecifics during courtship in a specific social context amenable to cheating 39 per cent of the time, while it was never employed in other social contexts. Males …