Preliminary evaluation of underwater sound detection by the cephalopod statocyst using a forced oscillation model

Acoustical Science and Technology

Susumu Segawa¹  Kenzo Kaifu²  Tomonari Akamatsu³ 

[1] Department of Ocean Sciences, Tokyo University of Marine Science and Technology;Graduate School of Agricultural and Life Sciences, The University of Tokyo;National Research Institute of Fisheries Engineering, Fisheries Research Agency

关键词: Cephalopod;    Hearing;    Particle motion;    Physical model;    Statocyst;   

DOI  :  10.1250/ast.32.255

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(28)Cited-By(1)To understand the mechanism of the peripheral auditory system of the cephalopod statocyst, the frequency dependence of particle motion sensitivity in cephalopods was estimated using a physical model of the sensory system, which was assumed to be forced oscillation. Reported perception thresholds of Sepia officinalis, Octopus vulgaris, and O. ocellatus fit the model well at low frequencies, whereas at frequencies above 150 Hz, the empirically measured threshold increased more steeply than the predicted increment. These results indicate that the frequency response of the perception threshold of cephalopods to particle motion can be primarily understood using the forced oscillation model, while unknown factor(s) play a role in the higher frequency range. Cephalopods are thought to be sensitive to low-frequency particle motion rather than high-frequency motion. The evolutionary function of cephalopod acoustical perception is not clear; however, the data suggest that they recognize the low-frequency particle motion that may be generated by prey, predators, and conspecifics.

【 授权许可】

Unknown