Acoustic pressure sensitivities and effects of particle motion in red sea bream Pagrus major

• Published in: Fisheries science Vol. 76; no. 1; pp. 13 - 20
• Main Authors: Kojima, T., Nihon Univ., Fujisawa, Kanagawa (Japan). Coll. of Bioresource Sciences, Suga, T, Kusano, A, Shimizu, S, Matsumoto, H, Aoki, S, Takai, N, Taniuchi, T
• Format: Journal Article
• Language: English
• Published: Japan Springer Japan 01.01.2010; Springer Nature B.V
• Subjects: ABR; Acoustics; AGUA; AUDICION; Audiogram; AUDITION; BEHAVIOUR; Biomedical and Life Sciences; COMPORTAMIENTO; COMPORTEMENT; Dipole; EAU; ELECTROCARDIOGRAFIA; ELECTROCARDIOGRAPHIE; ELECTROCARDIOGRAPHY; Far field; Fish; Fish & Wildlife Biology & Management; Food Science; Freshwater & Marine Ecology; HEARING; Heart; http://www.fao.org/aos/agrovoc#c_16104; http://www.fao.org/aos/agrovoc#c_26600; http://www.fao.org/aos/agrovoc#c_3514; http://www.fao.org/aos/agrovoc#c_7251; http://www.fao.org/aos/agrovoc#c_8309; http://www.fao.org/aos/agrovoc#c_868; Inner ear; Lateral line; Life Sciences; Marine; Near field; Original Article; PAGRUS; Pagrus major; SON (ACOUSTIQUE); SONIDO; SOUND; WATER; Near field; ABR; Lateral line; Dipole; Far field; Inner ear; Audiogram
• ISSN: 0919-9268; 1444-2906
• DOI: 10.1007/s12562-009-0194-x

The auditory pressure thresholds of red seabream were examined using cardiac response in the field by placing fish subjects far from the sound source to prevent particle motion. Pressure and particle motion thresholds were also obtained using the auditory brainstem response (ABR) technique. The thresholds at 100 and 200 Hz were significantly higher when measured using the cardiac response in the far field than those obtained in previously conducted experiments in experimental tub. However, thresholds obtained using ABR from 200 to 500 Hz were not remarkably lower, although significantly different (0.01 P 0.05), compared with those obtained using cardiac response in the far field. Furthermore, calculated particle velocity thresholds indicated that fish probably detected particle motion within the frequency range of 50-200 Hz, even in fish with a deactivated lateral line. Although the ABR method is widely applied in fish auditory study, hearing thresholds are apparently affected by particle motion.