Recent Advances in Marine Bioacoustics

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Marine Biology".

Deadline for manuscript submissions: 20 December 2024 | Viewed by 959

Special Issue Editors


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Guest Editor
UNIMIB · Department of Earth and Environmental Sciences, Università degli Studi di Milano-Bicocca, Milan, Italy
Interests: bioacoustics; biotremology; urban noise; biodiversity; behavioral ecology

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Guest Editor
UNIMIB · Department of Earth and Environmental Sciences, Università degli Studi di Milano-Bicocca, Milan, Italy
Interests: soundscape in urban and natural areas; eco-acoustics; soundscape in marine habitats; noise mapping
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Special Issue Information

Dear Colleagues,

Anthropogenic disturbance is one of the major drivers of the marine biodiversity crisis worldwide. Among them, human-made noise (e.g., commercial shipping) reaches across much of the world’s marine landscape, leading to a substantial degradation of the acoustic environment. An increasing amount of noise in the marine environment can have major and even fatal impacts on the animals, since it interferes with their key life functions (e.g., foraging, mating, migrating). In response to this pressing issue, bioacoustic approaches emerge as valuable tools, offering insights into the effects of noise by unveiling the intricate processes underlying these ecological changes. This issue aims to showcase the latest advancements in marine bioacoustics research, encompassing new methodologies, the effectiveness of diverse approaches, and the exploration of novel habitats and species. By facilitating the exchange of research experiences and results, this issue seeks to contribute to ongoing updates in guidelines and regulations for underwater noise management and marine conservation.

Dr. Valentina Zaffaroni-Caorsi
Dr. Giovanni Zambon
Dr. Roberto Benocci
Guest Editors

Manuscript Submission Information

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Keywords

  • bioacoustics
  • soundscape
  • marine
  • underwater
  • anthropogenic
  • conservation

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Published Papers (1 paper)

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Research

13 pages, 4495 KiB  
Article
Acoustic Target Strengths and Swimbladder Morphology of Chub Mackerel Scomber japonicus in the Northwest Pacific Ocean
by Hyungbeen Lee, Euna Yoon, Yong Jin Choo and Jeong-Hoon Lee
J. Mar. Sci. Eng. 2024, 12(9), 1500; https://doi.org/10.3390/jmse12091500 - 1 Sep 2024
Viewed by 478
Abstract
The Northwest Pacific chub mackerel (Scomber japonicus) is one of the most productive, economically important fishery resources worldwide. Accurately assessing this species and ensuring adherence to total allowable catch limits are crucial owing to fluctuations in their abundance and distribution. Acoustic [...] Read more.
The Northwest Pacific chub mackerel (Scomber japonicus) is one of the most productive, economically important fishery resources worldwide. Accurately assessing this species and ensuring adherence to total allowable catch limits are crucial owing to fluctuations in their abundance and distribution. Acoustic target strength measurements of S. japonicus were conducted at 38, 70, and 120 kHz using a split-beam echosounder of individuals from nine size groups (mean fork length, 10.8–28.3 cm) swimming freely in a net cage within a seawater tank. An underwater camera was utilized to simultaneously measure swimming angle. Least-squares regression analysis revealed that when the slope was constrained to 20, as per the generally applicable morphometric equation, the resulting values for the constant term (b20) were −67.7, −66.6, and −67.3 dB at 38, 70, and 120 kHz, respectively. S. japonicus mean swimming angle across the groups was −10.5–9.6° (standard deviation [SD], 16.3–33.3°). Furthermore, the ratio of swimbladder height to swimbladder length, the ratio of swimbladder length to fork length, and the tilt angle of the swimbladder (mean ± SD) were 0.191 ± 0.060, 0.245 ± 0.055, and 9.6 ± 3.0°, respectively. These results can be used for the acoustic stock assessment of S. japonicus in the Northwest Pacific Ocean. Full article
(This article belongs to the Special Issue Recent Advances in Marine Bioacoustics)
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