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The principal finding presented here is that Melipona costaricensis produces sounds that vary significantlyin relation to varying sugar concentrations. Several components of the sounds produced, during thebees’stay inside of the hive,were positively correlatedwith sugar concentration: song duration, probability ofsound production, duration of the long pulses and the relationship between short / long pulsed sound. Numberof pulses per song was negatively correlated with sugar concentrations. The duration of all sound pulses wassignificantly correlatedwith the distance of the food source. Duration of the short pulses and interpulsesweresignificantly affected by the distance of the food source. Sounds may contribute to the recruitment ofnestmates to increasingly rich food supplies during the day. It is clear that aspects of the sound signals are correlatedwith profitability of food sources.Universidad de Costa Rica. Centro de Investigaciones Apícolas Tropicales, Universidad Nacional.UCR::Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Biologí

Sounds in Melipona costaricensis (Apidae: Meliponini): effect of sugar concentration and nectar source distance