Glossophaga commissarisi

The vocal repertoire of captive Glossophaga commissarisi is not fully described yet. Vocalizations during male courtship and mother-pup interactions have not been recorded so far.

Glossophaga commissarisi (© Knörnschild).


Echolocation calls are used for orientation and foraging. Glossophagine bats excel at object recognition by echolocation (von Helversen & von Helversen 2003).

G commissarisi_echolocation

 Echolocation calls of G. commissarisi (© Knörnschild).

Alert calls

Both sexes produce alert calls when disturbed or when several conspecifics are circling the same location (e.g. day-roosts, feeding sites). In contrast to G. soricina, only one call type has been recorded (Knörnschild et al. 2010).

G commissarisi_alert call

Alert calls of G. commissarisi (© Knörnschild).

Aggressive trills

Both sexes utter aggressive trills during agressive encounters prior to physical contact between the opponents. Aggressive trills are always produced in series (Knörnschild et al. 2010).

G commissarisi_aggressive trills

  Aggressive trills of G. commissarisi (© Knörnschild).

Distress calls

Individuals produce distress calls when being attacked by conspecifics. Distress calls are multisyllabic and consist of three different syllable types (Knörnschild et al. 2010).

G commissarisi_distress calls

  Distress calls of G. commissarisi (© Knörnschild).

Approach pulses

Both sexes utter approach pulses when conspecifics are entering the day-roost. Approach pulses are always produced in series (Knörnschild et al. 2010).

G commissarisi_approach pulses

Approach pulses of G. commissarisi (© Knörnschild).

Other vocalization types

Four other vocalization types are described but the distinct social context in which they are uttered is unclear so far. Three vocalization type occur frequently during tandem flights and chases but it is unknown which of the two bats are uttering them (Knörnschild et al. 2010).

G commissarisi_tadem & chases

  Vocalization types of G. commissarisi produced during chases (© Knörnschild).

G commissarisi_unknown context

Vocalization type of G. commissarisi produced in an unknown context (© Knörnschild).

Sonograms depict frequency as a function of time (1,024-point fast Fourier transform, 100% frame size, Hamming window with 87.5% overlap).