Acoustic structure of low-frequency vocalizations of house mouse (<i>Mus musculus</i>). Ontogenetic aspects
Acoustic parameters of low-frequency vocalizations were studied in the house mouse – hybrids of outbreed strains CBA and C57BL/6. Audio-video recordings of acoustic behavior were made under the imitation of agonistic and sexual behavior of adult mice and during the emitting of the wriggling calls by mouse pups sitting with the mother in the nest. The most stable parameters of vocalizations are their high intensity, harmonic structure, number of main formants (3–5), frequency range below 35 kHz, location of fundamental frequency in the range of 2–5 kHz. Ontogenesis of the low-frequency vocalizations in mice is discussed.