BioAcoustica is a free, open repository of wildlife sound recordings from the Natural History Museum, London.
Taxonomic index of the BioAcoustica collection
Acoustic and biological measurements in the BioAcoustica collection
Recording annotations from ann-o-mate
The specimens that recordings are of, from the collections
Where the specimens that recordings are of were collected, not where the sound was recorded
| Mongolia, Selenge Aimag, Choni Nuch, lab recording, 20/8/1997, 29°C (Sony WM-D3 with Uher M 645, tape no., S97/1B, male with green back in Drosophila vial) | 0:20 |
The most characteristic property of the calling song of M. tomini is the extraordinarily large duration of its syllables (Fig. 7J). At 20oC the last syllable of a bi-syllabic echeme lasted about 200 ms. Only M. helleri is in the same range (150 ms at 30oC). However, both species differ considerably in the number of impulses per syllable: M. helleri has 32 impulses (and 39 teeth in the stridulatory file; Ciplak et al 2006), M. tomini ca. 80 impulses (and 108 teeth; Fig. 6C). Concerning the number of syllables per echeme, there is a surprising variability (Figs 7J1, 7J2). One animal (CH5317) showed consistently always three to six (eight) syllables per echeme (cage recording at 16oC), the others only two to four.