Temporal and structural features of infant calls in relation to caregiving behaviour in common marmosets, Callithrix j. jacchus

摘要: Abstract The role of infants in the communal rearing system marmosets and tamarins has received little attention although their demands may not be complied by inadequate helpers. As acoustic signalling plays an important social communication, it is expected to effective way for signal demand care. a first approach, this study focussed on use quality ‘tsik’ calls given common ( Callithrix j. jacchus ) context caregiving. non-acoustic behaviour group were recorded during two weeks life (twins). Vocalizations classified, structure infants' was quantified measuring specific parameters. Infants gave close temporal relation caregiving behaviour. Specific parameters covaried with subsequent potential caretakers. Values call duration, start frequency, peak range lower when followed no reaction or approach members, whereas these showed higher values transfer infants. Our results suggest that actual encoded variations calls.