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- Title
Hearing characteristics of cephalopods: Modeling and environmental impact study.
- Authors
ZHANG, Yunfeng; SHI, Feng; SONG, Jiakun; ZHANG, Xugang; YU, Shiliang
- Abstract
Cephalopods (octopus, squid and cuttlefish) are some of the most intriguing molluscs, and they represent economically important commercial marine species for fisheries. Previous studies have shown that cephalopods are sensitive to underwater particle motion, especially at low frequencies in the order of 10 Hz. The present paper deals with quantitative modeling of the statocyst system in three cephalopod species: Octopus vulgaris, Sepia officinalis and Loligo vulgaris. The octopus's macula/statolith organ was modeled as a 2nd-order dynamic oscillator using parameter values estimated from scanning electron micrograph images. The modeling results agree reasonably well with experimental data (acceleration threshold) in the three cephalopod species. Insights made from quantitative modeling and simulating the particle motion sensing mechanism of cephalopods elucidated their underwater particle motion detection capabilities. Sensitivity to emerging environmental issues, such as low frequency noise caused by near-shore wind farms and increasing levels of carbon dioxide in the ocean, and sensitivity to sounds produced by impending landslides were investigated in octopus using the model.
- Subjects
CEPHALOPODA physiology; HEARING; ENVIRONMENTAL impact analysis; AUDITORY evoked response; UNDERWATER acoustics
- Publication
Integrative Zoology, 2015, Vol 10, Issue 1, p141
- ISSN
1749-4869
- Publication type
Article
- DOI
10.1111/1749-4877.12104