Sonoda, Seizaburo

1 publication

Sonoda, Seizaburo; Takemura, Akira (detail)
1973Underwater sounds of the manatees, Trichechus manatus manatus and T. inunguis (Trichechidae).
Rept. Inst. Breeding Res., Tokyo Univ. Agric. No. 4: 19-24. 18 figs.
—Describes and illustrates various calls of each species; the main frequency range of both was 2-4 kHz. A spectrogram of chewing sounds of T. manatus is also included, as well as photos of both species and of a captive Dugong.